def on_initialize(self, event):
# Note: read as bytes, then decode; py2.6 compat
with open(op.join(this_dir, 'vertex_vispy.glsl'), 'rb') as fid:
vert = fid.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_seed.glsl'), 'rb') as f:
frag_seed = f.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_flood.glsl'), 'rb') as f:
frag_flood = f.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_display.glsl'), 'rb') as f:
frag_display = f.read().decode('ASCII')
self.programs = [
Program(vert, frag_seed),
Program(vert, frag_flood),
Program(vert, frag_display)
]
# Initialize variables
# using two FBs slightly faster than switching on one
self.fbo_to = [FrameBuffer(), FrameBuffer()]
self._setup_textures('shape1.tga')
vtype = np.dtype([('position', 'f4', 2), ('texcoord', 'f4', 2)])
vertices = np.zeros(4, dtype=vtype)
vertices['position'] = [[-1., -1.], [-1., 1.], [1., -1.], [1., 1.]]
vertices['texcoord'] = [[0., 0.], [0., 1.], [1., 0.], [1., 1.]]
vertices = VertexBuffer(vertices)
for program in self.programs:
program.bind(vertices)
def __init__(self):
self.use_shaders = True
app.Canvas.__init__(self, size=(512, 512), keys='interactive')
# Note: read as bytes, then decode; py2.6 compat
with open(op.join(this_dir, 'vertex_vispy.glsl'), 'rb') as fid:
vert = fid.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_seed.glsl'), 'rb') as f:
frag_seed = f.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_flood.glsl'), 'rb') as f:
frag_flood = f.read().decode('ASCII')
with open(op.join(this_dir, 'fragment_display.glsl'), 'rb') as f:
frag_display = f.read().decode('ASCII')
self.programs = [
Program(vert, frag_seed),
Program(vert, frag_flood),
Program(vert, frag_display)
]
# Initialize variables
# using two FBs slightly faster than switching on one
self.fbo_to = [FrameBuffer(), FrameBuffer()]
self._setup_textures('shape1.tga')
vtype = np.dtype([('position', 'f4', 2), ('texcoord', 'f4', 2)])
vertices = np.zeros(4, dtype=vtype)
vertices['position'] = [[-1., -1.], [-1., 1.], [1., -1.], [1., 1.]]
vertices['texcoord'] = [[0., 0.], [0., 1.], [1., 0.], [1., 1.]]
vertices = VertexBuffer(vertices)
for program in self.programs:
program.bind(vertices)
self._timer = app.Timer('auto', self.update, start=True)
self.show()
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 300) # for some reason Windows wants a tall window...
data = np.random.rand(*shape).astype(np.float32)
use_shape = shape + (3, )
with Canvas(size=shape[::-1]) as c:
orig_tex = Texture2D(data)
fbo_tex = Texture2D(use_shape, format='rgb')
rbo = RenderBuffer(shape, 'color')
fbo = FrameBuffer(color=fbo_tex)
c._glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert_equal(out_tex.shape, c.size[::-1])
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = RenderBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 300) # for some reason Windows wants a tall window...
data = np.random.rand(*shape).astype(np.float32)
use_shape = shape + (3,)
with Canvas(size=shape[::-1]) as c:
orig_tex = Texture2D(data)
fbo_tex = Texture2D(use_shape, format='rgb')
rbo = RenderBuffer(shape, 'color')
fbo = FrameBuffer(color=fbo_tex)
c.context.glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert_equal(out_tex.shape, c.size[::-1])
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = RenderBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 100)
data = np.random.rand(*shape).astype(np.float32)
orig_tex = Texture2D(data)
use_shape = shape + (3,)
fbo_tex = Texture2D(shape=use_shape, dtype=np.ubyte, format='rgb')
rbo = ColorBuffer(shape=shape)
fbo = FrameBuffer(color=fbo_tex)
with Canvas(size=(100, 100)) as c:
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = DepthBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def test_renderbuffer():
# Set with no args
assert_raises(ValueError, RenderBuffer)
# Set shape only
R = RenderBuffer((10, 20))
assert R.shape == (10, 20)
assert R.format is None
# Set both shape and format
gloo.context.get_current_glir_queue().clear()
R = RenderBuffer((10, 20), 'color')
assert R.shape == (10, 20)
assert R.format is 'color'
#
glir_cmds = R._glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'CREATE'
assert glir_cmds[1][0] == 'SIZE'
# Orther formats
assert RenderBuffer((10, 20), 'depth').format == 'depth'
assert RenderBuffer((10, 20), 'stencil').format == 'stencil'
# Test reset size and format
R.resize((9, 9), 'depth')
assert R.shape == (9, 9)
assert R.format == 'depth'
R.resize((8, 8), 'stencil')
assert R.shape == (8, 8)
assert R.format == 'stencil'
# Wrong formats
assert_raises(ValueError, R.resize, (9, 9), 'no_format')
assert_raises(ValueError, R.resize, (9, 9), [])
# Resizable
R = RenderBuffer((10, 20), 'color', False)
assert_raises(RuntimeError, R.resize, (9, 9), 'color')
# Attaching sets the format
F = FrameBuffer()
#
R = RenderBuffer((9, 9))
F.color_buffer = R
assert F.color_buffer is R
assert R.format == 'color'
#
F.depth_buffer = RenderBuffer((9, 9))
assert F.depth_buffer.format == 'depth'
#
F.stencil_buffer = RenderBuffer((9, 9))
assert F.stencil_buffer.format == 'stencil'
def test_renderbuffer():
# Set with no args
assert_raises(ValueError, RenderBuffer)
# Set shape only
R = RenderBuffer((10, 20))
assert R.shape == (10, 20)
assert R.format is None
# Set both shape and format
gloo.get_a_context().glir.clear()
R = RenderBuffer((10, 20), 'color')
assert R.shape == (10, 20)
assert R.format is 'color'
#
glir_cmds = R._context.glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'CREATE'
assert glir_cmds[1][0] == 'SIZE'
# Orther formats
assert RenderBuffer((10, 20), 'depth').format == 'depth'
assert RenderBuffer((10, 20), 'stencil').format == 'stencil'
# Test reset size and format
R.resize((9, 9), 'depth')
assert R.shape == (9, 9)
assert R.format == 'depth'
R.resize((8, 8), 'stencil')
assert R.shape == (8, 8)
assert R.format == 'stencil'
# Wrong formats
assert_raises(ValueError, R.resize, (9, 9), 'no_format')
assert_raises(ValueError, R.resize, (9, 9), [])
# Resizable
R = RenderBuffer((10, 20), 'color', False)
assert_raises(RuntimeError, R.resize, (9, 9), 'color')
# Attaching sets the format
F = FrameBuffer()
#
R = RenderBuffer((9, 9))
F.color_buffer = R
assert F.color_buffer is R
assert R.format == 'color'
#
F.depth_buffer = RenderBuffer((9, 9))
assert F.depth_buffer.format == 'depth'
#
F.stencil_buffer = RenderBuffer((9, 9))
assert F.stencil_buffer.format == 'stencil'
def on_initialize(self, event):
# Build cube data
# --------------------------------------
texcoord = [(0, 0), (0, 1), (1, 0), (1, 1)]
vertices = [(-2, -1, 0), (-2, +1, 0), (+2, -1, 0), (+2, +1, 0)]
vertices = VertexBuffer(vertices)
camera_pitch = 0.0 # Degrees
self.rotate = [camera_pitch, 0, 0]
self.translate = [0, 0, -3]
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
scale(model, 1, 1, 1)
self.phi = 0
self.cube = Program(cube_vertex, cube_fragment)
self.cube['position'] = vertices
# 4640 x 2256
imtex = cv2.imread(os.path.join(img_path, 'stage.jpg'))
self.cube['texcoord'] = texcoord
self.cube["texture"] = np.uint8(
np.clip(imtex + np.random.randint(-60, 20, size=imtex.shape), 0,
255)) + 5
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
color = Texture2D((640, 640, 3), interpolation='linear')
self.framebuffer = FrameBuffer(color, RenderBuffer((640, 640)))
self.quad = Program(quad_vertex, quad_fragment)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.objects = [self.cube]
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self.pub_timer = app.Timer(0.1, connect=self.send_ros_img, start=True)
self._set_projection(self.size)
def on_initialize(self, event):
self.rho = 0.0
# Build cube data
# --------------------------------------
self.checker = Program(cube_vertex, cube_fragment)
self.checker['texture'] = checkerboard()
self.checker['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.checker['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
# sheet, indices = make_sheet((960, 1080))
# sheet_buffer = VertexBuffer(sheet)
left_eye = Texture2D((960, 1080, 3), interpolation='linear')
self.left_eye_buffer = FrameBuffer(left_eye, RenderBuffer((960, 1080)))
# Build program
# --------------------------------------
self.view = np.eye(4, dtype=np.float32)
self.program = Program(vertex, fragment)
distortion_buffer = VertexBuffer(make_distortion())
self.program.bind(distortion_buffer)
self.program['rotation'] = self.view
self.program['texture'] = left_eye
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self._set_projection(self.size)
def initialize_renderer():
"""Initialize the OpenGL renderer.
For an OpenGL based renderer this sets up the viewport and creates
the shader programs.
"""
global fbuffer
global fbuffer_prog
global default_prog
fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]], np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
fbuf_vertices = VertexBuffer(data=vertices)
fbuf_texcoords = VertexBuffer(data=texcoords)
fbuffer_prog = Program(src_fbuffer.vert, src_fbuffer.frag)
fbuffer_prog['texcoord'] = fbuf_texcoords
fbuffer_prog['position'] = fbuf_vertices
default_prog = Program(src_default.vert, src_default.frag)
reset_view()
def __init__(self):
app.Canvas.__init__(self, title='Grayscott Reaction-Diffusion',
size=(512, 512), keys='interactive')
self.scale = 4
self.comp_size = (256, 256)
comp_w, comp_h = self.comp_size
dt = 1.0
dd = 1.5
species = {
# name : [r_u, r_v, f, k]
'Bacteria 1': [0.16, 0.08, 0.035, 0.065],
'Bacteria 2': [0.14, 0.06, 0.035, 0.065],
'Coral': [0.16, 0.08, 0.060, 0.062],
'Fingerprint': [0.19, 0.05, 0.060, 0.062],
'Spirals': [0.10, 0.10, 0.018, 0.050],
'Spirals Dense': [0.12, 0.08, 0.020, 0.050],
'Spirals Fast': [0.10, 0.16, 0.020, 0.050],
'Unstable': [0.16, 0.08, 0.020, 0.055],
'Worms 1': [0.16, 0.08, 0.050, 0.065],
'Worms 2': [0.16, 0.08, 0.054, 0.063],
'Zebrafish': [0.16, 0.08, 0.035, 0.060]
}
P = np.zeros((comp_h, comp_w, 4), dtype=np.float32)
P[:, :] = species['Unstable']
UV = np.zeros((comp_h, comp_w, 4), dtype=np.float32)
UV[:, :, 0] = 1.0
r = 32
UV[comp_h / 2 - r:comp_h / 2 + r,
comp_w / 2 - r:comp_w / 2 + r, 0] = 0.50
UV[comp_h / 2 - r:comp_h / 2 + r,
comp_w / 2 - r:comp_w / 2 + r, 1] = 0.25
UV += np.random.uniform(0.0, 0.01, (comp_h, comp_w, 4))
UV[:, :, 2] = UV[:, :, 0]
UV[:, :, 3] = UV[:, :, 1]
self.pingpong = 1
self.compute = Program(compute_vertex, compute_fragment, 4)
self.compute["params"] = P
self.compute["texture"] = UV
self.compute["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.compute["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.compute['dt'] = dt
self.compute['dx'] = 1.0 / comp_w
self.compute['dy'] = 1.0 / comp_h
self.compute['dd'] = dd
self.compute['pingpong'] = self.pingpong
self.render = Program(render_vertex, render_fragment, 4)
self.render["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.render["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.render["texture"] = self.compute["texture"]
self.render['pingpong'] = self.pingpong
self.fbo = FrameBuffer(self.compute["texture"],
RenderBuffer(self.comp_size))
set_state(depth_test=False, clear_color='black')
self._timer = app.Timer('auto', connect=self.update, start=True)
def initialize_renderer(self):
self.fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]],
np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
self.fbuf_vertices = VertexBuffer(data=vertices)
self.fbuf_texcoords = VertexBuffer(data=texcoords)
self.fbuffer_prog['texcoord'] = self.fbuf_texcoords
self.fbuffer_prog['position'] = self.fbuf_vertices
self.vertex_buffer = VertexBuffer()
self.index_buffer = IndexBuffer()
def on_initialize(self, event):
self.scale = 4
self.comp_size = (256, 256)
comp_w, comp_h = self.comp_size
dt = 1.0
dd = 1.5
species = {
# name : [r_u, r_v, f, k]
'Bacteria 1': [0.16, 0.08, 0.035, 0.065],
'Bacteria 2': [0.14, 0.06, 0.035, 0.065],
'Coral': [0.16, 0.08, 0.060, 0.062],
'Fingerprint': [0.19, 0.05, 0.060, 0.062],
'Spirals': [0.10, 0.10, 0.018, 0.050],
'Spirals Dense': [0.12, 0.08, 0.020, 0.050],
'Spirals Fast': [0.10, 0.16, 0.020, 0.050],
'Unstable': [0.16, 0.08, 0.020, 0.055],
'Worms 1': [0.16, 0.08, 0.050, 0.065],
'Worms 2': [0.16, 0.08, 0.054, 0.063],
'Zebrafish': [0.16, 0.08, 0.035, 0.060]
}
P = np.zeros((comp_h, comp_w, 4), dtype=np.float32)
P[:, :] = species['Unstable']
UV = np.zeros((comp_h, comp_w, 4), dtype=np.float32)
UV[:, :, 0] = 1.0
r = 32
UV[comp_h / 2 - r:comp_h / 2 + r, comp_w / 2 - r:comp_w / 2 + r,
0] = 0.50
UV[comp_h / 2 - r:comp_h / 2 + r, comp_w / 2 - r:comp_w / 2 + r,
1] = 0.25
UV += np.random.uniform(0.0, 0.01, (comp_h, comp_w, 4))
UV[:, :, 2] = UV[:, :, 0]
UV[:, :, 3] = UV[:, :, 1]
self.pingpong = 1
self.compute = Program(compute_vertex, compute_fragment, 4)
self.compute["params"] = P
self.compute["texture"] = UV
self.compute["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.compute["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.compute['dt'] = dt
self.compute['dx'] = 1.0 / comp_w
self.compute['dy'] = 1.0 / comp_h
self.compute['dd'] = dd
self.compute['pingpong'] = self.pingpong
self.render = Program(render_vertex, render_fragment, 4)
self.render["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.render["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.render["texture"] = self.compute["texture"]
self.render['pingpong'] = self.pingpong
self.fbo = FrameBuffer(self.compute["texture"],
DepthBuffer(self.comp_size))
set_state(depth_test=False, clear_color='black')
def __init__(self):
app.Canvas.__init__(self,
title="Conway game of life",
size=(512, 512),
keys='interactive')
# Build programs
# --------------
self.comp_size = self.size
size = self.comp_size + (4, )
Z = np.zeros(size, dtype=np.float32)
Z[...] = np.random.randint(0, 2, size)
Z[:256, :256, :] = 0
gun = """
........................O...........
......................O.O...........
............OO......OO............OO
...........O...O....OO............OO
OO........O.....O...OO..............
OO........O...O.OO....O.O...........
..........O.....O.......O...........
...........O...O....................
............OO......................"""
x, y = 0, 0
for i in range(len(gun)):
if gun[i] == '\n':
y += 1
x = 0
elif gun[i] == 'O':
Z[y, x] = 1
x += 1
self.pingpong = 1
self.compute = Program(compute_vertex, compute_fragment, 4)
self.compute["texture"] = Z
self.compute["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.compute["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.compute['dx'] = 1.0 / size[1]
self.compute['dy'] = 1.0 / size[0]
self.compute['pingpong'] = self.pingpong
self.render = Program(render_vertex, render_fragment, 4)
self.render["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.render["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.render["texture"] = self.compute["texture"]
self.render['pingpong'] = self.pingpong
self.fbo = FrameBuffer(self.compute["texture"],
RenderBuffer(self.comp_size))
set_state(depth_test=False, clear_color='black')
self._timer = app.Timer('auto', connect=self.update, start=True)
self.show()
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 300) # for some reason Windows wants a tall window...
data = np.random.rand(*shape).astype(np.float32)
use_shape = shape + (3, )
with Canvas(size=shape[::-1]) as c:
c.app.process_events()
c.set_current()
if c.app.backend_name.lower() == 'pyqt5':
# PyQt5 on OSX for some reason sets this to 1024x768...
c.size = shape[::-1]
c.app.process_events()
orig_tex = Texture2D(data)
fbo_tex = Texture2D(use_shape, format='rgb')
rbo = RenderBuffer(shape, 'color')
fbo = FrameBuffer(color=fbo_tex)
c.context.glir.set_verbose(True)
assert c.size == shape[::-1]
c.set_current()
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert out_tex.shape == c.size[::-1]
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = RenderBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 300) # for some reason Windows wants a tall window...
data = np.random.rand(*shape).astype(np.float32)
use_shape = shape + (3,)
with Canvas(size=shape[::-1]) as c:
c.app.process_events()
c.set_current()
if c.app.backend_name.lower() == 'pyqt5':
# PyQt5 on OSX for some reason sets this to 1024x768...
c.size = shape[::-1]
c.app.process_events()
orig_tex = Texture2D(data)
fbo_tex = Texture2D(use_shape, format='rgb')
rbo = RenderBuffer(shape, 'color')
fbo = FrameBuffer(color=fbo_tex)
c.context.glir.set_verbose(True)
assert c.size == shape[::-1]
c.set_current()
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert out_tex.shape == c.size[::-1]
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = RenderBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def initialize_renderer(self):
self.fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]],
np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
self.fbuf_vertices = VertexBuffer(data=vertices)
self.fbuf_texcoords = VertexBuffer(data=texcoords)
self.fbuffer_prog = Program(src_fbuffer.vert, src_fbuffer.frag)
self.fbuffer_prog['texcoord'] = self.fbuf_texcoords
self.fbuffer_prog['position'] = self.fbuf_vertices
self.vertex_buffer = VertexBuffer()
self.index_buffer = IndexBuffer()
self.default_prog = Program(src_default.vert, src_default.frag)
self.reset_view()
def on_initialize(self, event):
# Build cube data
# --------------------------------------
vertices, indices, _ = create_cube()
vertices = VertexBuffer(vertices)
self.indices = IndexBuffer(indices)
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
translate(view, 0, 0, -7)
self.phi, self.theta = 60, 20
rotate(model, self.theta, 0, 0, 1)
rotate(model, self.phi, 0, 1, 0)
self.cube = Program(cube_vertex, cube_fragment)
self.cube.bind(vertices)
self.cube["texture"] = checkerboard()
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
depth = DepthBuffer((512, 512))
color = Texture2D(shape=(512, 512, 3), interpolation='linear',
dtype=np.dtype(np.float32))
self.framebuffer = FrameBuffer(color=color, depth=depth)
self.quad = Program(quad_vertex, quad_fragment, count=4)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self._set_projection(self.size)
def on_initialize(self, event):
# Build cube data
# --------------------------------------
texcoord = [(0, 0), (0, 1), (1, 0), (1, 1)]
vertices = [(-2, -1, 0), (-2, +1, 0), (+2, -1, 0), (+2, +1, 0)]
vertices = VertexBuffer(vertices)
camera_pitch = 0.0 # Degrees
self.rotate = [camera_pitch, 0, 0]
self.translate = [0, 0, -3]
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
scale(model, 1, 1, 1)
self.phi = 0
self.cube = Program(cube_vertex, cube_fragment)
self.cube['position'] = vertices
# 4640 x 2256
imtex = cv2.imread(os.path.join(img_path, 'stage.jpg'))
self.cube['texcoord'] = texcoord
self.cube["texture"] = np.uint8(np.clip(imtex + np.random.randint(-60, 20, size=imtex.shape), 0, 255)) + 5
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
color = Texture2D((640, 640, 3), interpolation='linear')
self.framebuffer = FrameBuffer(color, RenderBuffer((640, 640)))
self.quad = Program(quad_vertex, quad_fragment)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.objects = [self.cube]
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self.pub_timer = app.Timer(0.1, connect=self.send_ros_img, start=True)
self._set_projection(self.size)
def on_initialize(self, event):
# Build programs
# --------------
self.comp_size = (512, 512)
size = self.comp_size + (4, )
Z = np.zeros(size, dtype=np.float32)
Z[...] = np.random.randint(0, 2, size)
Z[:256, :256, :] = 0
gun = """
........................O...........
......................O.O...........
............OO......OO............OO
...........O...O....OO............OO
OO........O.....O...OO..............
OO........O...O.OO....O.O...........
..........O.....O.......O...........
...........O...O....................
............OO......................"""
x, y = 0, 0
for i in range(len(gun)):
if gun[i] == '\n':
y += 1
x = 0
elif gun[i] == 'O':
Z[y, x] = 1
x += 1
self.pingpong = 1
self.compute = Program(compute_vertex, compute_fragment, 4)
self.compute["texture"] = Z
self.compute["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.compute["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.compute['dx'] = 1.0 / size[1]
self.compute['dy'] = 1.0 / size[0]
self.compute['pingpong'] = self.pingpong
self.render = Program(render_vertex, render_fragment, 4)
self.render["position"] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.render["texcoord"] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.render["texture"] = self.compute["texture"]
self.render['pingpong'] = self.pingpong
self.fbo = FrameBuffer(self.compute["texture"],
DepthBuffer(self.comp_size))
set_state(depth_test=False, clear_color='black')
def on_initialize(self, event):
# Build cube data
# --------------------------------------
vertices, indices, _ = cube()
vertices = VertexBuffer(vertices)
self.indices = IndexBuffer(indices)
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
translate(view, 0, 0, -7)
self.phi, self.theta = 60, 20
rotate(model, self.theta, 0, 0, 1)
rotate(model, self.phi, 0, 1, 0)
self.cube = Program(cube_vertex, cube_fragment)
self.cube.bind(vertices)
self.cube["texture"] = checkerboard()
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
depth = DepthBuffer((512, 512))
color = Texture2D(shape=(512, 512, 3), dtype=np.dtype(np.float32))
self.framebuffer = FrameBuffer(color=color, depth=depth)
self.quad = Program(quad_vertex, quad_fragment, count=4)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.quad["texture"].interpolation = 'linear'
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer(1.0 / 60)
self.timer.connect(self.on_timer)
self.timer.start()
self._set_projection(self.size)
def __init__(self):
app.Canvas.__init__(self,
title='Framebuffer post-processing',
keys='interactive',
size=(512, 512))
# Build cube data
# --------------------------------------
vertices, indices, _ = create_cube()
vertices = VertexBuffer(vertices)
self.indices = IndexBuffer(indices)
# Build program
# --------------------------------------
view = translate((0, 0, -7))
self.phi, self.theta = 60, 20
model = rotate(self.theta, (0, 0, 1)).dot(rotate(self.phi, (0, 1, 0)))
self.cube = Program(cube_vertex, cube_fragment)
self.cube.bind(vertices)
self.cube["texture"] = checkerboard()
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
color = Texture2D((512, 512, 3), interpolation='linear')
self.framebuffer = FrameBuffer(color, RenderBuffer((512, 512)))
self.quad = Program(quad_vertex, quad_fragment, count=4)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self._set_projection(self.physical_size)
self.show()
class Canvas(app.Canvas):
def __init__(self):
app.Canvas.__init__(self, title='Framebuffer post-processing',
keys='interactive', size=(512, 512))
def on_initialize(self, event):
# Build cube data
# --------------------------------------
vertices, indices, _ = create_cube()
vertices = VertexBuffer(vertices)
self.indices = IndexBuffer(indices)
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
translate(view, 0, 0, -7)
self.phi, self.theta = 60, 20
rotate(model, self.theta, 0, 0, 1)
rotate(model, self.phi, 0, 1, 0)
self.cube = Program(cube_vertex, cube_fragment)
self.cube.bind(vertices)
self.cube["texture"] = checkerboard()
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
depth = DepthBuffer((512, 512))
color = Texture2D(shape=(512, 512, 3), interpolation='linear',
dtype=np.dtype(np.float32))
self.framebuffer = FrameBuffer(color=color, depth=depth)
self.quad = Program(quad_vertex, quad_fragment, count=4)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self._set_projection(self.size)
def on_draw(self, event):
self.framebuffer.activate()
set_viewport(0, 0, 512, 512)
clear(color=True, depth=True)
set_state(depth_test=True)
self.cube.draw('triangles', self.indices)
self.framebuffer.deactivate()
set_viewport(0, 0, *self.size)
clear(color=True)
set_state(depth_test=False)
self.quad.draw('triangle_strip')
def on_resize(self, event):
self._set_projection(event.size)
def _set_projection(self, size):
width, height = size
set_viewport(0, 0, width, height)
projection = perspective(30.0, width / float(height), 2.0, 10.0)
self.cube['projection'] = projection
def on_timer(self, event):
self.theta += .5
self.phi += .5
model = np.eye(4, dtype=np.float32)
rotate(model, self.theta, 0, 0, 1)
rotate(model, self.phi, 0, 1, 0)
self.cube['model'] = model
self.update()
class OpenGLRenderer(ABC):
def __init__(self, src_fbuffer, src_default):
self.default_prog = None
self.fbuffer_prog = None
self.fbuffer = None
self.fbuffer_tex_front = None
self.fbuffer_tex_back = None
self.vertex_buffer = None
self.index_buffer = None
# Renderer Globals: STYLE/MATERIAL PROPERTIES
#
self.style = Style()
# Renderer Globals: Curves
self.stroke_weight = 1
self.stroke_cap = ROUND
self.stroke_join = MITER
# Renderer Globals
# VIEW MATRICES, ETC
#
self.viewport = None
self.texture_viewport = None
self.transform_matrix = np.identity(4)
self.projection_matrix = np.identity(4)
# Renderer Globals: RENDERING
self.draw_queue = []
# Shaders
self.fbuffer_prog = Program(src_fbuffer.vert, src_fbuffer.frag)
self.default_prog = Program(src_default.vert, src_default.frag)
def initialize_renderer(self):
self.fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]],
np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
self.fbuf_vertices = VertexBuffer(data=vertices)
self.fbuf_texcoords = VertexBuffer(data=texcoords)
self.fbuffer_prog['texcoord'] = self.fbuf_texcoords
self.fbuffer_prog['position'] = self.fbuf_vertices
self.vertex_buffer = VertexBuffer()
self.index_buffer = IndexBuffer()
def render_default(self, draw_type, draw_queue):
# 1. Get the maximum number of vertices persent in the shapes
# in the draw queue.
#
if len(draw_queue) == 0:
return
num_vertices = 0
for vertices, _, _ in draw_queue:
num_vertices = num_vertices + len(vertices)
# 2. Create empty buffers based on the number of vertices.
#
data = np.zeros(num_vertices,
dtype=[('position', np.float32, 3),
('color', np.float32, 4)])
# 3. Loop through all the shapes in the geometry queue adding
# it's information to the buffer.
#
sidx = 0
draw_indices = []
for vertices, idx, color in draw_queue:
num_shape_verts = len(vertices)
data['position'][sidx:(sidx +
num_shape_verts), ] = np.array(vertices)
color_array = np.array([color] * num_shape_verts)
data['color'][sidx:sidx + num_shape_verts, :] = color_array
draw_indices.append(sidx + idx)
sidx += num_shape_verts
self.vertex_buffer.set_data(data)
self.index_buffer.set_data(np.hstack(draw_indices))
# 4. Bind the buffer to the shader.
#
self.default_prog.bind(self.vertex_buffer)
# 5. Draw the shape using the proper shape type and get rid of
# the buffers.
#
self.default_prog.draw(draw_type, indices=self.index_buffer)
def cleanup(self):
"""Run the clean-up routine for the renderer.
This method is called when all drawing has been completed and the
program is about to exit.
"""
self.default_prog.delete()
self.fbuffer_prog.delete()
self.fbuffer.delete()
def _transform_vertices(self, vertices, local_matrix, global_matrix):
return np.dot(np.dot(vertices, local_matrix.T), global_matrix.T)[:, :3]
class Renderer2D:
def __init__(self):
self.default_prog = None
self.fbuffer_prog = None
self.texture_prog = None
self.line_prog = None
self.fbuffer = None
self.fbuffer_tex_front = None
self.fbuffer_tex_back = None
self.vertex_buffer = None
self.index_buffer = None
## Renderer Globals: USEFUL CONSTANTS
self.COLOR_WHITE = (1, 1, 1, 1)
self.COLOR_BLACK = (0, 0, 0, 1)
self.COLOR_DEFAULT_BG = (0.8, 0.8, 0.8, 1.0)
## Renderer Globals: STYLE/MATERIAL PROPERTIES
##
self.background_color = self.COLOR_DEFAULT_BG
self.fill_color = self.COLOR_WHITE
self.fill_enabled = True
self.stroke_color = self.COLOR_BLACK
self.stroke_enabled = True
self.tint_color = self.COLOR_BLACK
self.tint_enabled = False
## Renderer Globals: Curves
self.stroke_weight = 1
self.stroke_cap = 2
self.stroke_join = 0
## Renderer Globals
## VIEW MATRICES, ETC
##
self.viewport = None
self.texture_viewport = None
self.transform_matrix = np.identity(4)
self.modelview_matrix = np.identity(4)
self.projection_matrix = np.identity(4)
## Renderer Globals: RENDERING
self.draw_queue = []
def initialize_renderer(self):
self.fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]],
np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
self.fbuf_vertices = VertexBuffer(data=vertices)
self.fbuf_texcoords = VertexBuffer(data=texcoords)
self.fbuffer_prog = Program(src_fbuffer.vert, src_fbuffer.frag)
self.fbuffer_prog['texcoord'] = self.fbuf_texcoords
self.fbuffer_prog['position'] = self.fbuf_vertices
self.vertex_buffer = VertexBuffer()
self.index_buffer = IndexBuffer()
self.default_prog = Program(src_default.vert, src_default.frag)
self.texture_prog = Program(src_texture.vert, src_texture.frag)
self.texture_prog['texcoord'] = self.fbuf_texcoords
self.reset_view()
def reset_view(self):
self.viewport = (
0,
0,
int(builtins.width * builtins.pixel_x_density),
int(builtins.height * builtins.pixel_y_density),
)
self.texture_viewport = (
0,
0,
builtins.width,
builtins.height,
)
gloo.set_viewport(*self.viewport)
cz = (builtins.height / 2) / math.tan(math.radians(30))
self.projection_matrix = matrix.perspective_matrix(
math.radians(60), builtins.width / builtins.height, 0.1 * cz,
10 * cz)
self.modelview_matrix = matrix.translation_matrix(-builtins.width / 2, \
builtins.height / 2, \
-cz)
self.modelview_matrix = self.modelview_matrix.dot(
matrix.scale_transform(1, -1, 1))
self.transform_matrix = np.identity(4)
self.default_prog['modelview'] = self.modelview_matrix.T.flatten()
self.default_prog['projection'] = self.projection_matrix.T.flatten()
self.texture_prog['modelview'] = self.modelview_matrix.T.flatten()
self.texture_prog['projection'] = self.projection_matrix.T.flatten()
self.line_prog = Program(src_line.vert, src_line.frag)
self.line_prog['modelview'] = self.modelview_matrix.T.flatten()
self.line_prog['projection'] = self.projection_matrix.T.flatten()
self.line_prog["height"] = builtins.height
self.fbuffer_tex_front = Texture2D(
(builtins.height, builtins.width, 3))
self.fbuffer_tex_back = Texture2D((builtins.height, builtins.width, 3))
for buf in [self.fbuffer_tex_front, self.fbuffer_tex_back]:
self.fbuffer.color_buffer = buf
with self.fbuffer:
self.clear()
def clear(self, color=True, depth=True):
"""Clear the renderer background."""
gloo.set_state(clear_color=self.background_color)
gloo.clear(color=color, depth=depth)
def _comm_toggles(self, state=True):
gloo.set_state(blend=state)
gloo.set_state(depth_test=state)
if state:
gloo.set_state(blend_func=('src_alpha', 'one_minus_src_alpha'))
gloo.set_state(depth_func='lequal')
@contextmanager
def draw_loop(self):
"""The main draw loop context manager.
"""
self.transform_matrix = np.identity(4)
self.default_prog['modelview'] = self.modelview_matrix.T.flatten()
self.default_prog['projection'] = self.projection_matrix.T.flatten()
self.fbuffer.color_buffer = self.fbuffer_tex_back
with self.fbuffer:
gloo.set_viewport(*self.texture_viewport)
self._comm_toggles()
self.fbuffer_prog['texture'] = self.fbuffer_tex_front
self.fbuffer_prog.draw('triangle_strip')
yield
self.flush_geometry()
self.transform_matrix = np.identity(4)
gloo.set_viewport(*self.viewport)
self._comm_toggles(False)
self.clear()
self.fbuffer_prog['texture'] = self.fbuffer_tex_back
self.fbuffer_prog.draw('triangle_strip')
self.fbuffer_tex_front, self.fbuffer_tex_back = self.fbuffer_tex_back, self.fbuffer_tex_front
def _transform_vertices(self, vertices, local_matrix, global_matrix):
return np.dot(np.dot(vertices, local_matrix.T), global_matrix.T)[:, :3]
def _add_to_draw_queue_simple(self, stype, vertices, idx, fill, stroke,
stroke_weight, stroke_cap, stroke_join):
"""Adds shape of stype to draw queue
"""
if stype == 'lines':
self.draw_queue.append(
(stype, (vertices, idx, stroke, stroke_weight, stroke_cap,
stroke_join)))
else:
self.draw_queue.append((stype, (vertices, idx, fill)))
def render(self, shape):
fill = shape.fill.normalized if shape.fill else None
stroke = shape.stroke.normalized if shape.stroke else None
stroke_weight = shape.stroke_weight
stroke_cap = shape.stroke_cap
stroke_join = shape.stroke_join
obj_list = get_render_primitives(shape)
for obj in obj_list:
stype, vertices, idx = obj
# Transform vertices
vertices = self._transform_vertices(
np.hstack([vertices, np.ones((len(vertices), 1))]),
shape._matrix, self.transform_matrix)
# Add to draw queue
self._add_to_draw_queue_simple(stype, vertices, idx, fill, stroke,
stroke_weight, stroke_cap,
stroke_join)
def flush_geometry(self):
"""Flush all the shape geometry from the draw queue to the GPU.
"""
current_queue = []
for index, shape in enumerate(self.draw_queue):
current_shape = self.draw_queue[index][0]
current_queue.append(self.draw_queue[index][1])
if current_shape == "lines":
self.render_line(current_queue)
else:
self.render_default(current_shape, current_queue)
current_queue = []
self.draw_queue = []
def render_default(self, draw_type, draw_queue):
# 1. Get the maximum number of vertices persent in the shapes
# in the draw queue.
#
if len(draw_queue) == 0:
return
num_vertices = 0
for vertices, _, _ in draw_queue:
num_vertices = num_vertices + len(vertices)
# 2. Create empty buffers based on the number of vertices.
#
data = np.zeros(num_vertices,
dtype=[('position', np.float32, 3),
('color', np.float32, 4)])
# 3. Loop through all the shapes in the geometry queue adding
# it's information to the buffer.
#
sidx = 0
draw_indices = []
for vertices, idx, color in draw_queue:
num_shape_verts = len(vertices)
data['position'][sidx:(sidx + num_shape_verts), ] = vertices
color_array = np.array([color] * num_shape_verts)
data['color'][sidx:sidx + num_shape_verts, :] = color_array
draw_indices.append(sidx + idx)
sidx += num_shape_verts
self.vertex_buffer.set_data(data)
self.index_buffer.set_data(np.hstack(draw_indices))
# 4. Bind the buffer to the shader.
#
self.default_prog.bind(self.vertex_buffer)
# 5. Draw the shape using the proper shape type and get rid of
# the buffers.
#
self.default_prog.draw(draw_type, indices=self.index_buffer)
def render_line(self, queue):
'''
This rendering algorithm works by tesselating the line into
multiple triangles.
Reference: https://blog.mapbox.com/drawing-antialiased-lines-with-opengl-8766f34192dc
'''
if len(queue) == 0:
return
pos = []
posPrev = []
posCurr = []
posNext = []
markers = []
side = []
linewidth = []
join_type = []
cap_type = []
color = []
for line in queue:
if len(line[1]) == 0:
continue
for segment in line[1]:
for i in range(
len(segment) -
1): # the data is sent to renderer in line segments
for j in [0, 0, 1, 0, 1,
1]: # all the vertices of triangles
if i + j - 1 >= 0:
posPrev.append(line[0][segment[i + j - 1]])
else:
posPrev.append(line[0][segment[i + j]])
if i + j + 1 < len(segment):
posNext.append(line[0][segment[i + j + 1]])
else:
posNext.append(line[0][segment[i + j]])
posCurr.append(line[0][segment[i + j]])
markers.extend(
[1.0, -1.0, -1.0, -1.0, 1.0,
-1.0]) # Is the vertex up/below the line segment
side.extend([1.0, 1.0, -1.0, 1.0, -1.0,
-1.0]) # Left or right side of the segment
pos.extend([line[0][segment[i]]] *
6) # Left vertex of each segment
linewidth.extend([line[3]] * 6)
join_type.extend([line[5]] * 6)
cap_type.extend([line[4]] * 6)
color.extend([line[2]] * 6)
if len(pos) == 0:
return
posPrev = np.array(posPrev, np.float32)
posCurr = np.array(posCurr, np.float32)
posNext = np.array(posNext, np.float32)
markers = np.array(markers, np.float32)
side = np.array(side, np.float32)
pos = np.array(pos, np.float32)
linewidth = np.array(linewidth, np.float32)
join_type = np.array(join_type, np.float32)
cap_type = np.array(cap_type, np.float32)
color = np.array(color, np.float32)
self.line_prog['pos'] = gloo.VertexBuffer(pos)
self.line_prog['posPrev'] = gloo.VertexBuffer(posPrev)
self.line_prog['posCurr'] = gloo.VertexBuffer(posCurr)
self.line_prog['posNext'] = gloo.VertexBuffer(posNext)
self.line_prog['marker'] = gloo.VertexBuffer(markers)
self.line_prog['side'] = gloo.VertexBuffer(side)
self.line_prog['linewidth'] = gloo.VertexBuffer(linewidth)
self.line_prog['join_type'] = gloo.VertexBuffer(join_type)
self.line_prog['cap_type'] = gloo.VertexBuffer(cap_type)
self.line_prog["color"] = gloo.VertexBuffer(color)
self.line_prog.draw('triangles')
def render_image(self, image, location, size):
"""Render the image.
:param image: image to be rendered
:type image: builtins.Image
:param location: top-left corner of the image
:type location: tuple | list | builtins.Vector
:param size: target size of the image to draw.
:type size: tuple | list | builtins.Vector
"""
self.flush_geometry()
self.texture_prog[
'fill_color'] = self.tint_color if self.tint_enabled else self.COLOR_WHITE
self.texture_prog['transform'] = self.transform_matrix.T.flatten()
x, y = location
sx, sy = size
imx, imy = image.size
data = np.zeros(4,
dtype=[('position', np.float32, 2),
('texcoord', np.float32, 2)])
data['texcoord'] = np.array(
[[0.0, 1.0], [1.0, 1.0], [0.0, 0.0], [1.0, 0.0]], dtype=np.float32)
data['position'] = np.array(
[[x, y + sy], [x + sx, y + sy], [x, y], [x + sx, y]],
dtype=np.float32)
self.texture_prog['texture'] = image._texture
self.texture_prog.bind(VertexBuffer(data))
self.texture_prog.draw('triangle_strip')
def cleanup(self):
"""Run the clean-up routine for the renderer.
This method is called when all drawing has been completed and the
program is about to exit.
"""
self.default_prog.delete()
self.fbuffer_prog.delete()
self.line_prog.delete()
self.fbuffer.delete()
def __init__(self, canvas, background_color=(0,0,0,0), text_color=(1,1,1)):
# State.register_button(position, text)
self.canvas = canvas
self.text = None
self.tcolor = (text_color[0],text_color[1],text_color[2], 1)
self.bcolor = background_color
self.timer = 0
self.fade_timer = 0
self.projection = np.eye(4)
self.view = np.eye(4)
self.model = np.eye(4)
height, width = 5.0, 15.0 # Meters
orientation_vector = (1, 1, 0)
unit_orientation_angle = np.array(orientation_vector) / np.linalg.norm(orientation_vector)
scale_factor = 0.4
lowest_button = -5.2
midset = 0.2
position = -2
scale(self.model, scale_factor)
#yrotate(self.model, -90)
# rotate(self.model, 30, *unit_orientation_angle)
offset = (position * ((height + midset) * scale_factor))
translate(self.model, -4.4, lowest_button + offset, -10)
self.size = (int(height*100), int(width*100))
# Add texture coordinates
# Rectangle of height height
self.vertices = np.array([
[-width / 2, -height / 2, 0],
[ width / 2, -height / 2, 0],
[ width / 2, height / 2, 0],
[-width / 2, height / 2, 0],
], dtype=np.float32)
self.tex_coords = np.array([
[0, 0],
[1, 0],
[1, 1],
[0, 1],
], dtype=np.float32)
self.indices = IndexBuffer([
0, 1, 2,
2, 3, 0,
])
self.program = Program(self.toast_vertex_shader, self.toast_fragment_shader)
self.program['vertex_position'] = self.vertices
self.program['default_texcoord'] = self.tex_coords
self.program['view'] = self.view
self.program['model'] = self.model
self.program['projection'] = self.projection
self.program['background_color'] = (0,0,0,0) # no background yet
self.program['text_color'] = (0,0,0,0) # no text yet
# self.texture = Texture2D(shape=(1000, 1000) + (3,))
# self.text_buffer = FrameBuffer(self.texture, RenderBuffer((1000, 1000)))
self.texture = Texture2D(shape=self.size + (3,))
self.text_buffer = FrameBuffer(self.texture, RenderBuffer(self.size))
self.program['texture'] = self.texture
#self.program['text_color'] = self.tcolor # set the tcolor
#self.program['background_color'] = self.bcolor # set the tcolor
self.first = False # do not draw text until needed
self.make_text('Default Text') # Create Empty text object
class Canvas(app.Canvas):
def __init__(self):
app.Canvas.__init__(self, title='Framebuffer post-processing',
keys='interactive', size=(640, 640))
rospy.init_node('simulated_arm_view')
self.img_pub = Image_Publisher('/sim/arm_camera/image_rect', encoding='8UC1')
self.listener = tf.TransformListener()
def on_initialize(self, event):
# Build cube data
# --------------------------------------
texcoord = [(0, 0), (0, 1), (1, 0), (1, 1)]
vertices = [(-1, -1, 0), (-1, +1, 0), (+1, -1, 0), (+1, +1, 0)]
vertices = VertexBuffer(vertices)
#self.listener.waitForTransform("/robot", "/wrist_joint", rospy.Time(), rospy.Duration(4))
"""while not rospy.is_shutdown():
try:
now = rospy.Time.now()
self.listener.waitForTransform("/wrist_joint", "/robot", rospy.Time(), rospy.Duration(4))
(trans,rot) = listener.lookupTransform("/wrist_joint", "/robot", rospy.Time(), rospy.Duration(4))
"""
#pos, rot = self.listener.lookupTransform("/wrist_joint", "/robot", rospy.Time(0))
#print list(pos)
camera_pitch = 0.0 # Degrees
self.rotate = [camera_pitch, 0, 0]
#self.translate = list(pos)
self.translate = [0, 0, -5]
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
scale(model, 10, 10, 10)
self.phi = 0
self.cube = Program(cube_vertex, cube_fragment)
self.cube['position'] = vertices
# 4640 x 2256
imtex = cv2.imread(os.path.join(img_path, 'rubixFront.jpg'))
self.cube['texcoord'] = texcoord
self.cube["texture"] = np.uint8(np.clip(imtex + np.random.randint(-60, 20, size=imtex.shape), 0, 255)) + 5
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
color = Texture2D((640, 640, 3), interpolation='linear')
self.framebuffer = FrameBuffer(color, RenderBuffer((640, 640)))
self.quad = Program(quad_vertex, quad_fragment)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.objects = [self.cube]
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self.pub_timer = app.Timer(0.1, connect=self.send_ros_img, start=True)
self._set_projection(self.size)
def send_ros_img(self, event):
# Read frame buffer, get rid of alpha channel
img = self.framebuffer.read()[:, :, 2]
self.img_pub.publish(img)
def on_draw(self, event):
# Image rect
with self.framebuffer:
set_clear_color('gray')
clear(color=True, depth=True)
set_state(depth_test=True)
self.cube.draw('triangle_strip')
set_clear_color('pink')
clear(color=True)
set_state(depth_test=True)
self.quad.draw('triangle_strip')
def on_resize(self, event):
self._set_projection(event.size)
def _set_projection(self, size):
width, height = self.size
set_viewport(0, 0, width, height)
projection = perspective(100.0, width / float(height), 1.0, 20.0)
self.cube['projection'] = projection
def on_timer(self, event):
model = np.eye(4, dtype=np.float32)
#scale(model, 1, 1, 1)
self.cube['model'] = model
self.view = np.eye(4)
xrotate(self.view, self.rotate[0])
yrotate(self.view, self.rotate[1])
zrotate(self.view, self.rotate[2])
translate(self.view, *self.translate)
self.listener.waitForTransform("/robot", "/wrist_joint", rospy.Time(), rospy.Duration(4))
pos, rot = self.listener.lookupTransform("/robot", "/wrist_joint", rospy.Time(0))
print list(pos)
self.translate[0] = -list(pos)[0] * 10
self.translate[1] = -list(pos)[1] * 10
self.translate[2] = -5
self.cube['view'] = self.view
self.update()
def on_key_press(self, event):
"""Controls -
a(A) - move left
d(D) - move right
w(W) - move up
s(S) - move down"""
if(event.text.lower() == 'p'):
print(self.view)
elif(event.text.lower() == 'd'):
self.translate[0] += -0.1
elif(event.text.lower() == 'a'):
self.translate[0] += 0.1
elif(event.text.lower() == 'w'):
self.translate[1] += -0.1
elif(event.text.lower() == 's'):
self.translate[1] += 0.1
elif(event.text.lower() == 'q'):
self.rotate[2] += -1
elif(event.text.lower() == 'e'):
self.rotate[2] += 1
elif(event.text.lower() == 'z'):
self.translate[2] += -0.1
elif(event.text.lower() == 'x'):
self.translate[2] += 0.1
def __init__(self, text, canvas, position=1, color=(0.1, 0.0, 0.7)):
'''
Give this the
- text to be written
- main app.canvas
- position (1-9, or which button position this should occupy)
'''
# State Controller
State.register_button(position, text)
self.position = position
self.canvas = canvas
self.projection = np.eye(4)
self.view = np.eye(4)
self.model = np.eye(4)
height, width = 5.0, 15.0 # Meters
orientation_vector = (1, 1, 0)
unit_orientation_angle = np.array(orientation_vector) / np.linalg.norm(
orientation_vector)
scale_factor = 0.2
lowest_button = -5.2
midset = 0.2
scale(self.model, scale_factor)
yrotate(self.model, -60)
# rotate(self.model, 30, *unit_orientation_angle)
offset = (position * ((height + midset) * scale_factor))
translate(self.model, -7.4, lowest_button + offset, -10)
pixel_to_length = 10
self.size = map(lambda o: pixel_to_length * o, [width, height])
# Add texture coordinates
# Rectangle of height height
self.vertices = np.array([
[-width / 2, -height / 2, 0],
[width / 2, -height / 2, 0],
[width / 2, height / 2, 0],
[-width / 2, height / 2, 0],
],
dtype=np.float32)
self.tex_coords = np.array([
[0, 0],
[1, 0],
[1, 1],
[0, 1],
],
dtype=np.float32)
self.indices = IndexBuffer([
0,
1,
2,
2,
3,
0,
])
self.program = Program(self.button_vertex_shader,
self.button_fragment_shader)
self.program['vertex_position'] = self.vertices
self.program['default_texcoord'] = self.tex_coords
self.program['view'] = self.view
self.program['model'] = self.model
self.program['projection'] = self.projection
self.program['background_color'] = color
self.program['highlighted'] = 0
# self.texture = Texture2D(shape=(1000, 1000) + (3,))
# self.text_buffer = FrameBuffer(self.texture, RenderBuffer((1000, 1000)))
self.texture = Texture2D(shape=(500, 1500) + (3, ))
self.text_buffer = FrameBuffer(self.texture, RenderBuffer((500, 1500)))
self.program['texture'] = self.texture
self.text = text
self.make_text(self.text)
self.first = True
class Canvas(app.Canvas):
def __init__(self):
app.Canvas.__init__(self, title='Framebuffer post-processing',
keys='interactive', size=(512, 512))
def on_initialize(self, event):
# Build cube data
# --------------------------------------
vertices, indices, _ = create_cube()
vertices = VertexBuffer(vertices)
self.indices = IndexBuffer(indices)
# Build program
# --------------------------------------
view = translate((0,0,-7))
self.phi, self.theta = np.radians(60), np.radians(20)
model = rotate(self.theta, (0, 0, 1)) * rotate(self.phi, (0, 1, 0))
self.cube = Program(cube_vertex, cube_fragment)
self.cube.bind(vertices)
self.cube["texture"] = checkerboard()
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
depth = DepthBuffer((512, 512))
color = Texture2D(shape=(512, 512, 3), dtype=np.dtype(np.float32))
self.framebuffer = FrameBuffer(color=color, depth=depth)
self.quad = Program(quad_vertex, quad_fragment, count=4)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.quad["texture"].interpolation = 'linear'
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self._set_projection(self.size)
def on_draw(self, event):
self.framebuffer.activate()
set_viewport(0, 0, 512, 512)
clear(color=True, depth=True)
set_state(depth_test=True)
self.cube.draw('triangles', self.indices)
self.framebuffer.deactivate()
set_viewport(0, 0, *self.size)
clear(color=True)
set_state(depth_test=False)
self.quad.draw('triangle_strip')
def on_resize(self, event):
self._set_projection(event.size)
def _set_projection(self, size):
width, height = size
set_viewport(0, 0, width, height)
projection = perspective(30.0, width / float(height), 2.0, 10.0)
self.cube['projection'] = projection
def on_timer(self, event):
self.theta += .02
self.phi += .02
model = rotate(self.theta, (0, 0, 1)) * rotate(self.phi, (0, 1, 0))
self.cube['model'] = model
self.update()
def test_framebuffer():
# Test init with no args
F = FrameBuffer()
glir_cmds = F._glir.clear()
assert len(glir_cmds) == 1
glir_cmds[0][0] == 'CREATE'
# Activate / deactivate
F.activate()
glir_cmd = F._glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is True
#
F.deactivate()
glir_cmd = F._glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is False
#
with F:
pass
glir_cmds = F._glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'FRAMEBUFFER'
assert glir_cmds[1][0] == 'FRAMEBUFFER'
assert glir_cmds[0][2] is True and glir_cmds[1][2] is False
# Init with args
R = RenderBuffer((3, 3))
F = FrameBuffer(R)
assert F.color_buffer is R
#
R2 = RenderBuffer((3, 3))
F.color_buffer = R2
assert F.color_buffer is R2
# Wrong buffers
F = FrameBuffer()
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, [])
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, F, 'FOO')
color_buffer = RenderBuffer((9, 9), 'color')
assert_raises(ValueError, FrameBuffer.depth_buffer.fset, F, color_buffer)
# But None is allowed!
F.color_buffer = None
# Shape
R1 = RenderBuffer((3, 3))
R2 = RenderBuffer((3, 3))
R3 = RenderBuffer((3, 3))
F = FrameBuffer(R1, R2, R3)
assert F.shape == R1.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert F.shape == R1.shape
assert F.shape == R2.shape
assert F.shape == R3.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Shape from any buffer
F.color_buffer = None
assert F.shape == (10, 10)
F.depth_buffer = None
assert F.shape == (10, 10)
F.stencil_buffer = None
assert_raises(RuntimeError, FrameBuffer.shape.fget, F)
# Also with Texture luminance
T = gloo.Texture2D((20, 30))
R = RenderBuffer(T.shape)
assert T.format == 'luminance'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 1)
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Also with Texture RGB
T = gloo.Texture2D((20, 30, 3))
R = RenderBuffer(T.shape)
assert T.format == 'rgb'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 3)
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Wrong shape in resize
assert_raises(ValueError, F.resize, (9, 9, 1))
assert_raises(ValueError, F.resize, (9, ))
assert_raises(ValueError, F.resize, 'FOO')
def __init__(self):
self.projection = np.eye(4)
self.view = np.eye(4)
self.model = np.eye(4)
height, width = 3.0, 6.0
scale_factor = 0.2
x_offset = -8
y_offset = 2
pixel_to_length = 10
color = (1.0, 1.0, 1.0)
scale(self.model, scale_factor)
yrotate(self.model, -60)
translate(self.model, x_offset, y_offset, -10)
size = (int(height * 100), int(width * 100))
self.vertices = np.array([
[-width / 2, -height / 2, 0],
[width / 2, -height / 2, 0],
[width / 2, height / 2, 0],
[-width / 2, height / 2, 0],
],
dtype=np.float32)
self.tex_coords = np.array([
[0, 0],
[1, 0],
[1, 1],
[0, 1],
],
dtype=np.float32)
self.indices = IndexBuffer([
0,
1,
2,
2,
3,
0,
])
self.program = Program(self.battery_vertex_shader,
self.battery_fragment_shader)
self.texture = Texture2D(shape=size + (3, ))
self.text_buffer = FrameBuffer(self.texture, RenderBuffer(size))
images = []
images.append(
Image.open(
os.path.join(Paths.get_path_to_visar(), 'visar', 'images',
'battery', 'battery_low_color.png')))
images.append(
Image.open(
os.path.join(Paths.get_path_to_visar(), 'visar', 'images',
'battery', 'battery_used_color.png')))
images.append(
Image.open(
os.path.join(Paths.get_path_to_visar(), 'visar', 'images',
'battery', 'battery_full_color.png')))
self.level_texture = {} # texture for each level
for x in range(0, len(images)):
default_image = images[x]
default_image = default_image.rotate(-90)
default_image = default_image.resize(size)
default_image = default_image.transpose(Image.FLIP_TOP_BOTTOM)
default_image_array = np.asarray(default_image)
self.level_texture[x + 1] = default_image_array
#default_image_array = imageio.imread(os.path.join(Paths.get_path_to_visar(), 'visar', 'images', 'battery', 'battery_full_color.png'))
# self.default_tex = Texture2D(data=default_image_array)
# self.default_tex = Texture2D(shape=size + (3,))
# self.default_tex.set_data(self.level_texture[3])
self.program['vertex_position'] = self.vertices
self.program['default_texcoord'] = self.tex_coords
self.program['view'] = self.view
self.program['model'] = self.model
self.program['projection'] = self.projection
self.program['hide'] = 0
# self.tex_program = Program(self.tex_vert_shader, self.battery_fragment_shader)
# self.tex_program['vertex_position'] = self.vertices
# self.tex_program['default_texcoord'] = self.tex_coords
# self.tex_program['hide'] = 0
# self.tex_program['texture'] = self.default_tex
self.flag = True # flag to update the texture
self.level = 3 # level of the battery 1 - 3
full_middle_split = 75 # split between levels 2 and 3
middle_low_split = 25 # split between levels 1 and 2
fault_tolerance = 5
self.full_lower = full_middle_split - fault_tolerance # lower limit for going from 3 to 2
self.middle_upper = full_middle_split + fault_tolerance # upper limit for going from 2 to 3
self.middle_lower = middle_low_split - fault_tolerance # lower limit for going from 2 to 1
self.low_upper = middle_low_split + fault_tolerance # upper limit for going from 1 to 2
def test_framebuffer():
# Test init with no args
gloo.get_a_context().glir.clear()
F = FrameBuffer()
glir_cmds = F._context.glir.clear()
assert len(glir_cmds) == 1
glir_cmds[0][0] == 'CREATE'
# Activate / deactivate
F.activate()
glir_cmd = F._context.glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is True
#
F.deactivate()
glir_cmd = F._context.glir.clear()[-1]
assert glir_cmd[0] == 'FRAMEBUFFER'
assert glir_cmd[2] is False
#
with F:
pass
glir_cmds = F._context.glir.clear()
assert len(glir_cmds) == 2
assert glir_cmds[0][0] == 'FRAMEBUFFER'
assert glir_cmds[1][0] == 'FRAMEBUFFER'
assert glir_cmds[0][2] is True and glir_cmds[1][2] is False
# Init with args
R = RenderBuffer((3, 3))
F = FrameBuffer(R)
assert F.color_buffer is R
#
R2 = RenderBuffer((3, 3))
F.color_buffer = R2
assert F.color_buffer is R2
# Wrong buffers
F = FrameBuffer()
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.color_buffer.fset, F, [])
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, F, 'FOO')
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, F, 'FOO')
color_buffer = RenderBuffer((9, 9), 'color')
assert_raises(ValueError, FrameBuffer.depth_buffer.fset, F, color_buffer)
# But None is allowed!
F.color_buffer = None
# Shape
R1 = RenderBuffer((3, 3))
R2 = RenderBuffer((3, 3))
R3 = RenderBuffer((3, 3))
F = FrameBuffer(R1, R2, R3)
assert F.shape == R1.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert F.shape == R1.shape
assert F.shape == R2.shape
assert F.shape == R3.shape
assert R1.format == 'color'
assert R2.format == 'depth'
assert R3.format == 'stencil'
# Shape from any buffer
F.color_buffer = None
assert F.shape == (10, 10)
F.depth_buffer = None
assert F.shape == (10, 10)
F.stencil_buffer = None
assert_raises(RuntimeError, FrameBuffer.shape.fget, F)
# Also with Texture luminance
T = gloo.Texture2D((20, 30))
R = RenderBuffer(T.shape)
assert T.format == 'luminance'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 1)
assert F.shape == R.shape
assert T.format == 'luminance'
assert R.format == 'depth'
# Also with Texture RGB
T = gloo.Texture2D((20, 30, 3))
R = RenderBuffer(T.shape)
assert T.format == 'rgb'
F = FrameBuffer(T, R)
assert F.shape == T.shape[:2]
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Resize
F.resize((10, 10))
assert F.shape == (10, 10)
assert T.shape == (10, 10, 3)
assert F.shape == R.shape
assert T.format == 'rgb'
assert R.format == 'depth'
# Wrong shape in resize
assert_raises(ValueError, F. resize, (9, 9, 1))
assert_raises(ValueError, F. resize, (9,))
assert_raises(ValueError, F. resize, 'FOO')
class Renderer3D:
def __init__(self):
self.default_prog = None
self.fbuffer = None
self.fbuffer_tex_front = None
self.fbuffer_tex_back = None
self.vertex_buffer = None
self.index_buffer = None
## Renderer Globals: USEFUL CONSTANTS
self.COLOR_WHITE = (1, 1, 1, 1)
self.COLOR_BLACK = (0, 0, 0, 1)
self.COLOR_DEFAULT_BG = (0.8, 0.8, 0.8, 1.0)
## Renderer Globals: STYLE/MATERIAL PROPERTIES
##
self.background_color = self.COLOR_DEFAULT_BG
self.fill_color = self.COLOR_WHITE
self.fill_enabled = True
self.stroke_color = self.COLOR_BLACK
self.stroke_enabled = True
self.tint_color = self.COLOR_BLACK
self.tint_enabled = False
## Renderer Globals: Curves
self.stroke_weight = 1
self.stroke_cap = 2
self.stroke_join = 0
## Renderer Globals
## VIEW MATRICES, ETC
##
self.viewport = None
self.texture_viewport = None
self.transform_matrix = np.identity(4)
self.projection_matrix = np.identity(4)
self.lookat_matrix = np.identity(4)
## Renderer Globals: RENDERING
self.draw_queue = []
def initialize_renderer(self):
self.fbuffer = FrameBuffer()
vertices = np.array(
[[-1.0, -1.0], [+1.0, -1.0], [-1.0, +1.0], [+1.0, +1.0]],
np.float32)
texcoords = np.array([[0.0, 0.0], [1.0, 0.0], [0.0, 1.0], [1.0, 1.0]],
dtype=np.float32)
self.fbuf_vertices = VertexBuffer(data=vertices)
self.fbuf_texcoords = VertexBuffer(data=texcoords)
self.fbuffer_prog = Program(src_fbuffer.vert, src_fbuffer.frag)
self.fbuffer_prog['texcoord'] = self.fbuf_texcoords
self.fbuffer_prog['position'] = self.fbuf_vertices
self.vertex_buffer = VertexBuffer()
self.index_buffer = IndexBuffer()
self.default_prog = Program(src_default.vert, src_default.frag)
self.reset_view()
def reset_view(self):
self.viewport = (
0,
0,
int(builtins.width * builtins.pixel_x_density),
int(builtins.height * builtins.pixel_y_density),
)
self.texture_viewport = (
0,
0,
builtins.width,
builtins.height,
)
gloo.set_viewport(*self.viewport)
cz = (builtins.height / 2) / math.tan(math.radians(30))
self.projection_matrix = matrix.perspective_matrix(
math.radians(60), builtins.width / builtins.height, 0.1 * cz,
10 * cz)
self.transform_matrix = np.identity(4)
self.default_prog['projection'] = self.projection_matrix.T.flatten()
self.default_prog['perspective_matrix'] = self.lookat_matrix.T.flatten(
)
self.fbuffer_tex_front = Texture2D(
(builtins.height, builtins.width, 3))
self.fbuffer_tex_back = Texture2D((builtins.height, builtins.width, 3))
for buf in [self.fbuffer_tex_front, self.fbuffer_tex_back]:
self.fbuffer.color_buffer = buf
with self.fbuffer:
self.clear()
self.fbuffer.depth_buffer = gloo.RenderBuffer(
(builtins.height, builtins.width))
def clear(self, color=True, depth=True):
"""Clear the renderer background."""
gloo.set_state(clear_color=self.background_color)
gloo.clear(color=color, depth=depth)
def _comm_toggles(self, state=True):
gloo.set_state(blend=state)
gloo.set_state(depth_test=state)
if state:
gloo.set_state(blend_func=('src_alpha', 'one_minus_src_alpha'))
gloo.set_state(depth_func='lequal')
@contextmanager
def draw_loop(self):
"""The main draw loop context manager.
"""
self.transform_matrix = np.identity(4)
self.default_prog['projection'] = self.projection_matrix.T.flatten()
self.default_prog['perspective_matrix'] = self.lookat_matrix.T.flatten(
)
self.fbuffer.color_buffer = self.fbuffer_tex_back
with self.fbuffer:
gloo.set_viewport(*self.texture_viewport)
self._comm_toggles()
self.fbuffer_prog['texture'] = self.fbuffer_tex_front
self.fbuffer_prog.draw('triangle_strip')
yield
self.flush_geometry()
self.transform_matrix = np.identity(4)
gloo.set_viewport(*self.viewport)
self._comm_toggles(False)
self.clear()
self.fbuffer_prog['texture'] = self.fbuffer_tex_back
self.fbuffer_prog.draw('triangle_strip')
self.fbuffer_tex_front, self.fbuffer_tex_back = self.fbuffer_tex_back, self.fbuffer_tex_front
def _transform_vertices(self, vertices, local_matrix, global_matrix):
return np.dot(np.dot(vertices, local_matrix.T), global_matrix.T)[:, :3]
def render(self, shape):
if isinstance(shape, Geometry):
n = len(shape.vertices)
tverts = self._transform_vertices(
np.hstack([shape.vertices, np.ones((n, 1))]), shape.matrix,
self.transform_matrix)
edges = shape.edges
faces = shape.faces
self.add_to_draw_queue('poly', tverts, edges, faces,
self.fill_color, self.stroke_color)
elif isinstance(shape, PShape):
vertices = shape._draw_vertices
n, _ = vertices.shape
tverts = self._transform_vertices(
np.hstack([vertices,
np.zeros((n, 1)),
np.ones((n, 1))]), shape._matrix,
self.transform_matrix)
fill = shape.fill.normalized if shape.fill else None
stroke = shape.stroke.normalized if shape.stroke else None
edges = shape._draw_edges
faces = shape._draw_faces
if edges is None:
print(vertices)
print("whale")
exit()
if 'open' in shape.attribs:
overtices = shape._draw_outline_vertices
no, _ = overtices.shape
toverts = self._transform_vertices(
np.hstack([overtices,
np.zeros((no, 1)),
np.ones((no, 1))]), shape._matrix,
self.transform_matrix)
self.add_to_draw_queue('poly', tverts, edges, faces, fill,
None)
self.add_to_draw_queue('path', toverts, edges[:-1], None, None,
stroke)
else:
self.add_to_draw_queue(shape.kind, tverts, edges, faces, fill,
stroke)
def add_to_draw_queue(self,
stype,
vertices,
edges,
faces,
fill=None,
stroke=None):
"""Add the given vertex data to the draw queue.
:param stype: type of shape to be added. Should be one of {'poly',
'path', 'point'}
:type stype: str
:param vertices: (N, 3) array containing the vertices to be drawn.
:type vertices: np.ndarray
:param edges: (N, 2) array containing edges as tuples of indices
into the vertex array. This can be None when not appropriate
(eg. for points)
:type edges: None | np.ndarray
:param faces: (N, 3) array containing faces as tuples of indices
into the vertex array. For 'point' and 'path' shapes, this can
be None
:type faces: np.ndarray
:param fill: Fill color of the shape as a normalized RGBA tuple.
When set to `None` the shape doesn't get a fill (default: None)
:type fill: None | tuple
:param stroke: Stroke color of the shape as a normalized RGBA
tuple. When set to `None` the shape doesn't get stroke
(default: None)
:type stroke: None | tuple
"""
fill_shape = self.fill_enabled and not (fill is None)
stroke_shape = self.stroke_enabled and not (stroke is None)
if fill_shape and stype not in ['point', 'path']:
idx = np.array(faces, dtype=np.uint32).ravel()
self.draw_queue.append(["triangles", (vertices, idx, fill)])
if stroke_shape:
if stype == 'point':
idx = np.arange(0, len(vertices), dtype=np.uint32)
self.draw_queue.append(["points", (vertices, idx, stroke)])
else:
idx = np.array(edges, dtype=np.uint32).ravel()
self.draw_queue.append(["lines", (vertices, idx, stroke)])
def flush_geometry(self):
"""Flush all the shape geometry from the draw queue to the GPU.
"""
current_queue = []
for index, shape in enumerate(self.draw_queue):
current_shape, current_obj = self.draw_queue[index][
0], self.draw_queue[index][1]
# If current_shape is lines, bring it to the front by epsilon
# to resolve z-fighting
if current_shape == 'lines':
# line_transform is used whenever we render lines to break ties in depth
# We transform the points to camera space, move them by Z_EPSILON, and them move them back to world space
line_transform = inv(self.lookat_matrix).dot(
translation_matrix(0, 0,
Z_EPSILON).dot(self.lookat_matrix))
vertices = current_obj[0]
current_obj = (np.hstack(
[vertices, np.ones(
(vertices.shape[0], 1))]).dot(line_transform.T)[:, :3],
current_obj[1], current_obj[2])
current_queue.append(current_obj)
if index < len(self.draw_queue) - 1:
if self.draw_queue[index][0] == self.draw_queue[index + 1][0]:
continue
self.render_default(current_shape, current_queue)
current_queue = []
self.draw_queue = []
def render_default(self, draw_type, draw_queue):
# 1. Get the maximum number of vertices persent in the shapes
# in the draw queue.
#
if len(draw_queue) == 0:
return
num_vertices = 0
for vertices, _, _ in draw_queue:
num_vertices = num_vertices + len(vertices)
# 2. Create empty buffers based on the number of vertices.
#
data = np.zeros(num_vertices,
dtype=[('position', np.float32, 3),
('color', np.float32, 4)])
# 3. Loop through all the shapes in the geometry queue adding
# it's information to the buffer.
#
sidx = 0
draw_indices = []
for vertices, idx, color in draw_queue:
num_shape_verts = len(vertices)
data['position'][sidx:(sidx +
num_shape_verts), ] = np.array(vertices)
color_array = np.array([color] * num_shape_verts)
data['color'][sidx:sidx + num_shape_verts, :] = color_array
draw_indices.append(sidx + idx)
sidx += num_shape_verts
self.vertex_buffer.set_data(data)
self.index_buffer.set_data(np.hstack(draw_indices))
# 4. Bind the buffer to the shader.
#
self.default_prog.bind(self.vertex_buffer)
# 5. Draw the shape using the proper shape type and get rid of
# the buffers.
#
self.default_prog.draw(draw_type, indices=self.index_buffer)
def cleanup(self):
"""Run the clean-up routine for the renderer.
This method is called when all drawing has been completed and the
program is about to exit.
"""
self.default_prog.delete()
self.fbuffer_prog.delete()
self.fbuffer.delete()
def on_initialize(self, event):
# Build cube data
# --------------------------------------
texcoord = [(0, 0), (0, 1), (1, 0), (1, 1)]
vertices = [(-1, -1, 0), (-1, +1, 0), (+1, -1, 0), (+1, +1, 0)]
vertices = VertexBuffer(vertices)
#self.listener.waitForTransform("/robot", "/wrist_joint", rospy.Time(), rospy.Duration(4))
"""while not rospy.is_shutdown():
try:
now = rospy.Time.now()
self.listener.waitForTransform("/wrist_joint", "/robot", rospy.Time(), rospy.Duration(4))
(trans,rot) = listener.lookupTransform("/wrist_joint", "/robot", rospy.Time(), rospy.Duration(4))
"""
#pos, rot = self.listener.lookupTransform("/wrist_joint", "/robot", rospy.Time(0))
#print list(pos)
camera_pitch = 0.0 # Degrees
self.rotate = [camera_pitch, 0, 0]
#self.translate = list(pos)
self.translate = [0, 0, -5]
# Build program
# --------------------------------------
view = np.eye(4, dtype=np.float32)
model = np.eye(4, dtype=np.float32)
scale(model, 10, 10, 10)
self.phi = 0
self.cube = Program(cube_vertex, cube_fragment)
self.cube['position'] = vertices
# 4640 x 2256
imtex = cv2.imread(os.path.join(img_path, 'rubixFront.jpg'))
self.cube['texcoord'] = texcoord
self.cube["texture"] = np.uint8(np.clip(imtex + np.random.randint(-60, 20, size=imtex.shape), 0, 255)) + 5
self.cube["texture"].interpolation = 'linear'
self.cube['model'] = model
self.cube['view'] = view
color = Texture2D((640, 640, 3), interpolation='linear')
self.framebuffer = FrameBuffer(color, RenderBuffer((640, 640)))
self.quad = Program(quad_vertex, quad_fragment)
self.quad['texcoord'] = [(0, 0), (0, 1), (1, 0), (1, 1)]
self.quad['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.quad['texture'] = color
self.objects = [self.cube]
# OpenGL and Timer initalization
# --------------------------------------
set_state(clear_color=(.3, .3, .35, 1), depth_test=True)
self.timer = app.Timer('auto', connect=self.on_timer, start=True)
self.pub_timer = app.Timer(0.1, connect=self.send_ros_img, start=True)
self._set_projection(self.size)