def _append_screenshot(self):
if self.sector is None:
# self._images.append(ImageGrab.grab())
self._images.append(im.fromarray(_screenshot()))
else:
# self._images.append(ImageGrab.grab(bbox=self.sector))
self._images.append(im.fromarray(_screenshot()))
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_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_uniforms():
"""Test using uniform arrays"""
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
varying vec2 v_pos;
uniform vec3 u_color[2];
void main()
{
gl_FragColor = vec4((u_color[0] + u_color[1]) / 2., 1.);
}
"""
shape = (500, 500)
with Canvas(size=shape) as c:
c.set_current()
c.context.glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
shape = (3, 3)
set_viewport((0, 0) + shape)
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
program['u_color'] = np.ones((2, 3))
c.context.clear('k')
c.set_current()
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., np.ones(shape), atol=1. / 255.)
# now set one element
program['u_color[1]'] = np.zeros(3, np.float32)
c.context.clear('k')
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255.,
127.5 / 255. * np.ones(shape),
atol=1. / 255.)
# and the other
assert_raises(ValueError, program.__setitem__, 'u_color',
np.zeros(3, np.float32))
program['u_color'] = np.zeros((2, 3), np.float32)
program['u_color[0]'] = np.ones(3, np.float32)
c.context.clear((0.33, ) * 3)
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255.,
127.5 / 255. * np.ones(shape),
atol=1. / 255.)
def draw(self):
if self._glsl:
fragment = fragment_template % self._glsl
self._glsl = None
# Check to see if the shader will compile successfully before we
# set it. We do this here because the ShaderWatcher runs in a
# different thread and so can't access the GL context.
frag_handle = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(frag_handle, fragment)
gl.glCompileShader(frag_handle)
status = gl.glGetShaderParameter(frag_handle, gl.GL_COMPILE_STATUS)
if not status:
errors = gl.glGetShaderInfoLog(frag_handle)
errors = self.process_errors(errors)
print("Shader failed to compile:", file=sys.stderr)
print(errors, file=sys.stderr)
# Switch to error shader
self._glsl = error_shader
self.update()
else:
self.program.set_shaders(vertex, fragment)
gl.glDeleteShader(frag_handle)
if self._interactive:
self.program.draw()
if self._ffmpeg_pipe is not None:
img = _screenshot()
self.write_video_frame(img)
self._render_frame_index += 1
if self._render_frame_count is not None and self._render_frame_index >= self._render_frame_count:
app.quit()
return
self.advance_time()
else:
with self._fbo:
rs = list(self._render_size)
if self._tile_coord[0] + rs[0] > self._output_size[0]:
rs[0] = self._output_size[0] - self._tile_coord[0]
if self._tile_coord[1] + rs[1] > self._output_size[1]:
rs[1] = self._output_size[1] - self._tile_coord[1]
gloo.set_viewport(0, 0, *rs)
self.program['iOffset'] = self._tile_coord
self.program.draw()
img = _screenshot()
row = self._output_size[1] - self._tile_coord[1] - rs[1]
col = self._tile_coord[0]
self._img[row:row + rs[1], col:col + rs[0], :] = img
def draw(self):
if self._glsl:
fragment = fragment_template % self._glsl
self._glsl = None
# Check to see if the shader will compile successfully before we
# set it. We do this here because the ShaderWatcher runs in a
# different thread and so can't access the GL context.
frag_handle = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(frag_handle, fragment)
gl.glCompileShader(frag_handle)
status = gl.glGetShaderParameter(frag_handle, gl.GL_COMPILE_STATUS)
if not status:
errors = gl.glGetShaderInfoLog(frag_handle)
errors = self.process_errors(errors)
print("Shader failed to compile:", file=sys.stderr)
print(errors, file=sys.stderr)
# Switch to error shader
self._glsl = error_shader
self.update()
else:
self.program.set_shaders(vertex, fragment)
gl.glDeleteShader(frag_handle)
if self._interactive:
self.program.draw()
if self._ffmpeg_pipe is not None:
img = _screenshot()
self.write_video_frame(img)
self._render_frame_index += 1
if self._render_frame_count is not None and self._render_frame_index >= self._render_frame_count:
app.quit()
return
self.advance_time()
else:
with self._fbo:
rs = list(self._render_size)
if self._tile_coord[0] + rs[0] > self._output_size[0]:
rs[0] = self._output_size[0] - self._tile_coord[0]
if self._tile_coord[1] + rs[1] > self._output_size[1]:
rs[1] = self._output_size[1] - self._tile_coord[1]
gloo.set_viewport(0, 0, *rs)
self.program['iOffset'] = self._tile_coord
self.program.draw()
img = _screenshot()
row = self._output_size[1] - self._tile_coord[1] - rs[1]
col = self._tile_coord[0]
self._img[row:row + rs[1], col:col + rs[0], :] = img
def test_use_uniforms():
"""Test using uniform arrays"""
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
varying vec2 v_pos;
uniform vec3 u_color[2];
void main()
{
gl_FragColor = vec4((u_color[0] + u_color[1]) / 2., 1.);
}
"""
shape = (500, 500)
with Canvas(size=shape) as c:
c.set_current()
c.context.glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
shape = (3, 3)
set_viewport((0, 0) + shape)
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
program['u_color'] = np.ones((2, 3))
c.context.clear('k')
c.set_current()
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., np.ones(shape), atol=1. / 255.)
# now set one element
program['u_color[1]'] = np.zeros(3, np.float32)
c.context.clear('k')
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., 127.5 / 255. * np.ones(shape),
atol=1. / 255.)
# and the other
assert_raises(ValueError, program.__setitem__, 'u_color',
np.zeros(3, np.float32))
program['u_color'] = np.zeros((2, 3), np.float32)
program['u_color[0]'] = np.ones(3, np.float32)
c.context.clear((0.33,) * 3)
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., 127.5 / 255. * np.ones(shape),
atol=1. / 255.)
def on_key_press(ev):
print(ev.key.name)
if ev.key.name in 'S':
print("Saving...")
res = _screenshot()
vispy_file.write_png('config_space/{}_shot.png'.format(seq), res)
print("Done")
def screenshot(file='screenshot.png', alpha=True):
"""Save a screenshot of active vispy 3D canvas.
Parameters
----------
file : str, optional
Filename
alpha : bool, optional
If True, alpha channel will be saved
See Also
--------
:func:`navis.Viewer.screenshot`
Take screenshot of specific canvas.
"""
if alpha:
mode = 'RGBA'
else:
mode = 'RGB'
im = png.from_array(_screenshot(alpha=alpha), mode=mode)
im.save(file)
return
def _update_process_check(canvas, val, paint=True, ignore_fail=False):
"""Update, process, and check result"""
if paint:
canvas.update()
canvas.app.process_events()
canvas.app.process_events()
canvas._backend._vispy_set_current()
print(' check %s' % val)
# check screenshot to see if it's all one color
ss = _screenshot()
try:
assert_allclose(ss.shape[:2], _win_size[::-1])
except Exception:
print('!!!!!!!!!! FAIL bad size %s' % list(ss.shape[:2]))
sleep(_err_sleep_time)
if not ignore_fail:
raise
goal = val * np.ones(ss.shape)
try:
assert_allclose(ss, goal, atol=1) # can be off by 1 due to rounding
except Exception:
print('!!!!!!!!!! FAIL %s' % np.unique(ss))
sleep(_err_sleep_time)
if not ignore_fail:
raise
def animation(self, t):
""" Added for animation with MoviePy """
self.program['u_clock'] = t
gloo.clear('black')
_, im = self.cap.read()
self.program['texture'][...] = im
self.program.draw('triangle_strip')
return _screenshot((0, 0, self.size[0], self.size[1]))[:, :, :3]
def on_draw(self, event):
# Render in the FBO.
with self._fbo:
gloo.clear((1,1,1,1))
gloo.set_viewport(0, 0, *self.true_size)
self.program.draw(gl.GL_TRIANGLE_STRIP)
# Retrieve the contents of the FBO texture.
self.shadowsArray = _screenshot((0, 0, self.true_size[0], self.true_size[1]))
# Immediately exit the application.
app.quit()
def test_markers():
"""Test basic marker / point-sprite support"""
# this is probably too basic, but it at least ensures that point sprites
# work for people
with TestingCanvas() as c:
marker = Markers()
marker.set_data(np.array([[50, 50]], np.float32))
c.draw_visual(marker)
marker = _screenshot(alpha=False)
assert 10 < (marker == 255).sum() < 100
def test_markers():
"""Test basic marker / point-sprite support"""
# this is probably too basic, but it at least ensures that point sprites
# work for people
with TestingCanvas() as c:
marker = Markers()
marker.set_data(np.array([[50, 50]], np.float32))
c.draw_visual(marker)
marker = _screenshot(alpha=False)
assert 10 < (marker == 255).sum() < 100
def test_use_texture3D():
"""Test using a 3D texture"""
vals = [0, 200, 100, 0, 255, 0, 100]
d, h, w = len(vals), 3, 5
data = np.zeros((d, h, w), np.float32)
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
uniform sampler3D u_texture;
varying vec2 v_pos;
uniform float i;
void main()
{
gl_FragColor = texture3D(u_texture,
vec3((v_pos.y+1.)/2., (v_pos.x+1.)/2., i));
gl_FragColor.a = 1.;
}
"""
# populate the depth "slices" with different gray colors in the bottom left
for ii, val in enumerate(vals):
data[ii, :2, :3] = val / 255.
with Canvas(size=(100, 100)) as c:
if not has_pyopengl():
t = Texture3D(data)
assert_raises(ImportError, t.glir.flush, c.context.shared.parser)
return
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
tex = Texture3D(data, interpolation='nearest')
assert_equal(tex.width, w)
assert_equal(tex.height, h)
assert_equal(tex.depth, d)
program['u_texture'] = tex
for ii, val in enumerate(vals):
set_viewport(0, 0, w, h)
clear(color='black')
iii = (ii + 0.5) / float(d)
print(ii, iii)
program['i'] = iii
program.draw('triangle_strip')
out = _screenshot()[:, :, 0].astype(int)[::-1]
expected = np.zeros_like(out)
expected[:2, :3] = val
assert_allclose(out, expected, atol=1. / 255.)
def test_use_texture3D():
"""Test using a 3D texture"""
vals = [0, 200, 100, 0, 255, 0, 100]
d, h, w = len(vals), 3, 5
data = np.zeros((d, h, w), np.float32)
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
uniform sampler3D u_texture;
varying vec2 v_pos;
uniform float i;
void main()
{
gl_FragColor = texture3D(u_texture,
vec3((v_pos.y+1.)/2., (v_pos.x+1.)/2., i));
gl_FragColor.a = 1.;
}
"""
# populate the depth "slices" with different gray colors in the bottom left
for ii, val in enumerate(vals):
data[ii, :2, :3] = val / 255.
with Canvas(size=(100, 100)) as c:
if not has_pyopengl():
t = Texture3D(data)
assert_raises(ImportError, t.glir.flush, c.context.shared.parser)
return
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
tex = Texture3D(data, interpolation='nearest')
assert_equal(tex.width, w)
assert_equal(tex.height, h)
assert_equal(tex.depth, d)
program['u_texture'] = tex
for ii, val in enumerate(vals):
set_viewport(0, 0, w, h)
clear(color='black')
iii = (ii + 0.5) / float(d)
print(ii, iii)
program['i'] = iii
program.draw('triangle_strip')
out = _screenshot()[:, :, 0].astype(int)[::-1]
expected = np.zeros_like(out)
expected[:2, :3] = val
assert_allclose(out, expected, atol=1./255.)
def on_draw(self, event):
# Render in the FBO.
with self._fbo:
gloo.clear('black')
gloo.set_viewport(0, 0, *self.size)
self.program.draw()
# Retrieve the contents of the FBO texture.
self.im = _screenshot((0, 0, self.size[0], self.size[1]))
self._time = time() - self._t0
# Immediately exit the application.
app.quit()
def show_mol_surf(mol_obj=None,
surf_datas=None,
l_par=None,
reduced_mol=False,
**kwargs):
canvas = scene.SceneCanvas(keys='interactive', bgcolor=(1, 1, 1, 1))
view = canvas.central_widget.add_view()
num = None
if surf_datas is not None:
if isinstance(surf_datas, tuple):
colors = ColorIter(len(surf_datas))
for data in surf_datas:
if num is not None and len(data) != num:
raise TypeError("different dimensions of surfaces")
num = len(data)
build_surface(data=data, view=view, color=next(colors))
else:
build_surface(data=surf_datas, view=view, color=next(ColorIter(1)))
num = len(surf_datas)
if mol_obj is not None:
mol = mol_obj.copy()
if surf_datas is not None:
if l_par is not None:
mol.pos /= l_par
mol.pos *= num
vis_mol_wrap(mol, view=view, reduced_mol=reduced_mol)
if num is None:
num = 50
sr = kwargs.get('setrange', num)
cam = scene.TurntableCamera(elevation=30, azimuth=30)
if kwargs.get('show_axis', True):
axis = myXYZAxis(length=num + 10, parent=view.scene)
cam.set_range((-sr, sr), (-sr, sr), (-sr, sr))
view.camera = cam
cube_size = kwargs.get('cube_size', 0.)
scene.visuals.Cube(size=cube_size * num / 2,
color=(0.9, 0.9, 0.3, 0.4),
edge_color="black",
parent=view.scene)
canvas.show()
if kwargs.get('quit', False):
app.process_events()
else:
app.run()
if kwargs.get('screenshot', False):
name = kwargs.get("screenname", 'screenshot.png')
im = _screenshot((0, 0, canvas.size[0], canvas.size[1]))
imsave(name, im)
def grabscreenshot(event):
if m.done:
return # Grab only once
m.frame += 1
if m.frame in frames:
frames.remove(m.frame)
im = _screenshot((0, 0, c.size[0], c.size[1]))
# Ensure we don't have alpha silliness
im = np.array(im)
im[:, :, 3] = 255
m.images.append(im)
if not frames:
m.done = True
def screenshot(self, linewidth=26, start=0):
with self.fbo:
gloo.set_line_width(linewidth)
gloo.set_viewport(0, 0, 2048, 2048)
gloo.set_state(blend=True, depth_test=True)
gloo.clear(color="white", depth=True)
self.program.draw("lines", self.index_buffer)
im = _screenshot((0, 0, 2048, 2048))[:, :, :3]
for i in range(start, 9999):
if not osp.exists(f"{self.prefix}_s{i:04d}.png"):
print(f"Save to {self.prefix}_s{i:04d}.png")
cv2.imwrite(f"{self.prefix}_s{i:04d}.png", im[:, :, ::-1])
break
def grabscreenshot(event):
if m.done:
return # Grab only once
m.frame += 1
if m.frame in frames:
frames.remove(m.frame)
im = _screenshot((0, 0, c.size[0], c.size[1]))
# Ensure we don't have alpha silliness
im = np.array(im)
im[:, :, 3] = 255
m.images.append(im)
if not frames:
m.done = True
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 write(self):
image = _screenshot(alpha=True)
write_png('covers2/%s.png' % self.time, image)
data = {}
data.update(self.input_manager.smoothed_inputs)
data['time'] = self.time
data['definition'] = self.fractal.definition['name']
with open('covers2/%s.yml' % self.time, 'w') as f:
yaml.dump(data, stream=f)
print "Wrote image and data for %s" % self.time
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 on_key_press(self, event):
if event.key == "q":
self.show(False, False)
self.app.quit()
return
elif event.key == "p" or event.key == " ":
self._paused = not self._paused
self.update_timer_state()
elif event.key == "s":
img = _screenshot()
self.write_img(img)
elif event.key == "a":
print("Size/pos args: --size %dx%d --pos %d,%d" %
(self.physical_size[0],
self.physical_size[1],
self.position[0],
self.position[1]))
elif event.key == "f":
self._profile = not self._profile
if self._profile:
def print_profile(fps):
print("%.2f ms/frame" % (1000.0 / float(fps)))
return False
self.measure_fps(1.0, print_profile)
else:
self.measure_fps(1.0, False)
self.update_timer_state()
elif event.key == keys.LEFT or event.key == keys.RIGHT:
self._paused = True
self.update_timer_state()
step = 1.0 / 60.0
if keys.ALT in event.modifiers:
step *= 0.1
if keys.SHIFT in event.modifiers:
step *= 0.1
else:
if keys.SHIFT in event.modifiers:
step *= 10.0
if keys.CONTROL in event.modifiers:
step *= 100.0
if event.key == keys.LEFT:
step *= -1.0
self.program['iGlobalTime'] += step
self.print_t()
self.update()
def on_key_press(self, event):
if event.key == "q":
self.show(False, False)
self.app.quit()
return
elif event.key == "p" or event.key == " ":
self._paused = not self._paused
self.update_timer_state()
elif event.key == "s":
img = _screenshot()
self.write_img(img)
elif event.key == "a":
print("Size/pos args: --size %dx%d --pos %d,%d" %
(self.physical_size[0],
self.physical_size[1],
self.position[0],
self.position[1]))
elif event.key == "f":
self._profile = not self._profile
if self._profile:
def print_profile(fps):
print("%.2f ms/frame" % (1000.0 / float(fps)))
return False
self.measure_fps(1.0, print_profile)
else:
self.measure_fps(1.0, False)
self.update_timer_state()
elif event.key == keys.LEFT or event.key == keys.RIGHT:
self._paused = True
self.update_timer_state()
step = 1.0 / 60.0
if keys.ALT in event.modifiers:
step *= 0.1
if keys.SHIFT in event.modifiers:
step *= 0.1
else:
if keys.SHIFT in event.modifiers:
step *= 10.0
if keys.CONTROL in event.modifiers:
step *= 100.0
if event.key == keys.LEFT:
step *= -1.0
self.program['time'] += step
self.print_t()
self.update()
def on_draw(self, _):
if self._done:
return # Grab only once
self._current_frame += 1
if self._current_frame in self._frames_to_grab:
self._frames_to_grab.remove(self._current_frame)
if isinstance(self._canvas, SceneCanvas):
im = self._canvas.render(alpha=True)
else:
im = _screenshot()
self._collected_images.append(im)
if not self._frames_to_grab or self._current_frame > self._frames_to_grab[
0]:
self._done = True
def process_frame(self, tex):
print('process_frame w/shader')
with self._fbo:
self.program['u_tex1'] = gloo.Texture2D(tex,
interpolation='linear')
self.program.bind(gloo.VertexBuffer(data))
self.program.draw('triangle_strip')
self.sc = _screenshot((0, 0, self.size[0], self.size[1]),
alpha=False)
self._time = time() - self._t0
def on_draw(self, event):
if args.outputfile:
faces = [[0, 0], [90, 0], [180, 0], [270, 0], [0, 90], [0, 270]]
self.model = numpy.dot(rotate(faces[args.faces - 1][0], (0, 0, 1)),
rotate(faces[args.faces - 1][0], (0, 1, 0)))
self.shader_nodes['u_model'] = self.model
self.shader_traces['u_model'] = self.model
gloo.clear()
self.program = self.shader_nodes
self.program.draw('points')
self.program = self.shader_traces
self.program.draw('lines')
if args.outputfile:
self.im = _screenshot((0, 0, self.size[0], self.size[1]))
app.quit()
def make_frame(t):
global fnum
# paramter t is time in seconds. so for 20 fps every second
# has 20 calls. this is not the frame number
# so multiply by some factor to get a faster movie
surface.set_data(z = Z(fnum)) # Update the mathematical surface
fnum += .25
# optionally change color ...
surface.color = (np.clip(1.-fnum/20,0,1),1,np.clip(fnum/20,0,1),1)
canvas.bgcolor=(0,np.clip(.3-(fnum/20),0,1),.3,1)
# optionally call event loop. this will make the video
## follow the user interactions ....
app.process_events()
# draw and capture
canvas.on_draw(None) # Update the image on Vispy's canvas
return _screenshot((0,0,canvas.size[0],canvas.size[1]))[:,:,:3]
def _update_process_check(canvas, val, draw=True):
"""Update, process, and check result"""
if draw:
canvas.update()
canvas.app.process_events()
canvas.app.process_events()
sleep(0.03) # give it time to swap (Qt?)
canvas._backend._vispy_set_current()
print(' check %s' % val)
# check screenshot to see if it's all one color
ss = _screenshot()
try:
assert_allclose(ss.shape[:2], _win_size[::-1])
except Exception:
print('!!!!!!!!!! FAIL bad size %s' % list(ss.shape[:2]))
raise
goal = val * np.ones(ss.shape)
try:
assert_allclose(ss, goal, atol=1) # can be off by 1 due to rounding
except Exception:
print('!!!!!!!!!! FAIL %s' % np.unique(ss))
raise
def _update_process_check(canvas, val, draw=True):
"""Update, process, and check result"""
if draw:
canvas.update()
canvas.app.process_events()
canvas.app.process_events()
sleep(0.03) # give it time to swap (Qt?)
canvas._backend._vispy_set_current()
print(' check %s' % val)
# check screenshot to see if it's all one color
ss = _screenshot()
try:
assert_allclose(ss.shape[:2], _win_size[::-1])
except Exception:
print('!!!!!!!!!! FAIL bad size %s' % list(ss.shape[:2]))
raise
goal = val * np.ones(ss.shape)
try:
# Get rid of the alpha value before testing
# It can be off by 1 due to rounding
assert_allclose(ss[:, :, :3], goal[:, :, :3], atol=1)
except Exception:
print('!!!!!!!!!! FAIL %s' % np.unique(ss))
raise
def test_application():
"""Test application running"""
app = use_app()
print(app) # __repr__ without app
app.create()
wrong = 'glfw' if app.backend_name.lower() != 'glfw' else 'pyqt4'
assert_raises(RuntimeError, use_app, wrong)
app.process_events()
print(app) # test __repr__
assert_raises(ValueError, Canvas, keys='foo')
assert_raises(TypeError, Canvas, keys=dict(escape=1))
assert_raises(ValueError, Canvas, keys=dict(escape='foo')) # not an attr
pos = [0, 0] if app.backend_module.capability['position'] else None
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = 'default'
with Canvas(title=title, size=size, app=app, show=True,
position=pos) as canvas:
context = canvas.context
assert_true(canvas.create_native() is None) # should be done already
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal('swap_buffers', canvas.events.draw.callback_refs[-1])
canvas.measure_fps(0.001)
sleep(0.002)
canvas.update()
app.process_events()
assert_true(canvas.fps > 0)
# Other methods
print(canvas) # __repr__
assert_equal(canvas.title, title)
canvas.title = 'you'
with use_log_level('warning', record=True, print_msg=False) as l:
if app.backend_module.capability['position']:
# todo: disable more tests based on capability
canvas.position = pos
canvas.size = size
if 'ipynb_vnc' in canvas.app.backend_name.lower():
assert_true(len(l) >= 1)
else:
assert_true(len(l) == 0)
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != 'darwin': # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# deprecation of "paint"
with use_log_level('info', record=True, print_msg=False) as log:
olderr = sys.stderr
try:
fid = StringIO()
sys.stderr = fid
@canvas.events.paint.connect
def fake(event):
pass
finally:
sys.stderr = olderr
assert_equal(len(log), 1)
assert_in('deprecated', log[0])
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (4,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
if sys.platform != 'win32': # XXX knownfail for windows
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knawnfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = "void main (void) {gl_Position = pos;}"
frag = "void main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
vert = "uniform vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "uniform vec4 pos;\nvoid main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
#uniform = program.uniforms[0]
program['pos'] = [1, 2, 3, 4]
vert = "attribute vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "void main (void) {}"
program = Program(vert, frag)
#attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
# use a real program
program._glir.clear()
vert = ("uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}")
frag = "void main() {gl_FragColor = vec4(0, 0, 0, 1);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [('a_position', np.float32, 2),
('a_color', np.float32, 4)])
data['a_position'] = np.repeat(position, p, axis=0)
data['a_color'] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program['u_model'] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = ("varying vec4 v_colors") # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
frag_bad = None # no fragment code. no main is not always enough
assert_raises(ValueError, Program, vert, frag_bad)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2,
start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
sleep(.003)
assert_true(timer.elapsed >= 0.002)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
# put this in even though __exit__ will call it to make sure we don't
# have problems calling it multiple times
canvas.close() # done by context
def test_application():
"""Test application running"""
app = use_app()
print(app) # __repr__ without app
app.create()
wrong = 'glut' if app.backend_name.lower() != 'glut' else 'pyglet'
assert_raises(RuntimeError, use_app, wrong)
app.process_events()
print(app) # test __repr__
assert_raises(ValueError, Canvas, keys='foo')
assert_raises(TypeError, Canvas, keys=dict(escape=1))
assert_raises(ValueError, Canvas, keys=dict(escape='foo')) # not an attr
pos = [0, 0] if app.backend_module.capability['position'] else None
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = 'default'
with Canvas(title=title, size=size, app=app, show=True,
position=pos) as canvas:
assert_true(canvas.create_native() is None) # should be done already
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal('swap_buffers', canvas.events.draw.callback_refs[-1])
canvas.measure_fps(0.001)
sleep(0.002)
canvas.update()
app.process_events()
assert_true(canvas.fps > 0)
# Other methods
print(canvas) # __repr__
assert_equal(canvas.title, title)
canvas.title = 'you'
with use_log_level('warning', record=True, print_msg=False) as l:
if app.backend_module.capability['position']:
# todo: disable more tests based on capability
canvas.position = pos
canvas.size = size
if 'ipynb_vnc' in canvas.app.backend_name.lower():
assert_true(len(l) >= 1)
else:
assert_true(len(l) == 0)
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != 'darwin': # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# deprecation of "paint"
with use_log_level('info', record=True, print_msg=False) as log:
olderr = sys.stderr
try:
with open(os.devnull, 'w') as fid:
sys.stderr = fid
@canvas.events.paint.connect
def fake(event):
pass
finally:
sys.stderr = olderr
assert_equal(len(log), 1)
assert_in('deprecated', log[0])
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (4,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
if (app.backend_name.lower() != 'glut' and # XXX knownfail for Almar
sys.platform != 'win32'): # XXX knownfail for windows
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knawnfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = VertexShader("void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
assert_raises(RuntimeError, program.activate)
vert = VertexShader("uniform vec4 pos;"
"void main (void) {gl_Position = pos;}")
frag = FragmentShader("uniform vec4 pos;"
"void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
#uniform = program.uniforms[0]
program['pos'] = [1, 2, 3, 4]
program.activate() # should print
#uniform.upload(program)
program.detach(vert)
program.detach(frag)
assert_raises(RuntimeError, program.detach, vert)
assert_raises(RuntimeError, program.detach, frag)
vert = VertexShader("attribute vec4 pos;"
"void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {}")
program = Program(vert, frag)
#attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
program.activate()
#attribute.upload(program)
# cannot get element count
#assert_raises(RuntimeError, program.draw, 'POINTS')
# use a real program
vert = ("uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}")
frag = "void main() {gl_FragColor = vec4(0, 0, 0, 1);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [('a_position', np.float32, 2),
('a_color', np.float32, 4)])
data['a_position'] = np.repeat(position, p, axis=0)
data['a_color'] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program['u_model'] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = ("varying vec4 v_colors") # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.activate)
frag_bad = None # no fragment code. no main is not always enough
program = Program(vert, frag_bad)
assert_raises(ValueError, program.activate)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2,
start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
sleep(.003)
assert_true(timer.elapsed >= 0.002)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
# put this in even though __exit__ will call it to make sure we don't
# have problems calling it multiple times
canvas.close() # done by context
def _test_application(backend):
"""Test application running"""
app = Application()
assert_raises(ValueError, app.use, "foo")
app.use(backend)
wrong = "Glut" if app.backend_name != "Glut" else "Pyglet"
assert_raises(RuntimeError, app.use, wrong)
app.process_events()
if backend is not None:
# "in" b/c "qt" in "PySide (qt)"
assert_in(backend, app.backend_name)
print(app) # test __repr__
# Canvas
pos = [0, 0]
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = "default" if backend is None else backend
with Canvas(title=title, size=size, app=app, show=True, position=pos) as canvas:
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal("swap_buffers", canvas.events.paint.callback_refs[-1])
print(canvas) # __repr__
assert_array_equal(canvas.size, size)
assert_equal(canvas.title, title)
canvas.title = "you"
canvas.position = pos
canvas.size = size
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != "darwin": # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (3,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knawnfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = VertexShader("void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
assert_raises(RuntimeError, program.activate)
vert = VertexShader("uniform vec4 pos;" "void main (void) {gl_Position = pos;}")
frag = FragmentShader("uniform vec4 pos;" "void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
# uniform = program.uniforms[0]
program["pos"] = [1, 2, 3, 4]
program.activate() # should print
# uniform.upload(program)
program.detach(vert)
program.detach(frag)
assert_raises(RuntimeError, program.detach, vert)
assert_raises(RuntimeError, program.detach, frag)
vert = VertexShader("attribute vec4 pos;" "void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {}")
program = Program(vert, frag)
# attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
program.activate()
# attribute.upload(program)
# cannot get element count
# assert_raises(RuntimeError, program.draw, 'POINTS')
# use a real program
vert = (
"uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}"
)
frag = "void main() {gl_FragColor = vec4(0, 0, 0, 1);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [("a_position", np.float32, 2), ("a_color", np.float32, 4)])
data["a_position"] = np.repeat(position, p, axis=0)
data["a_color"] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program["u_model"] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = "varying vec4 v_colors" # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.activate)
frag_bad = None # no fragment code. no main is not always enough
program = Program(vert, frag_bad)
assert_raises(ValueError, program.activate)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2, start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
def movie_animate(self, t):
self.program['u_time'] = t
self.update()
gloo.clear()
self.program.draw('triangle_strip')
return _screenshot((0, 0, self.size[0], self.size[1]))[:, :, :3]
def on_key_press(self, event):
# Hold <Ctrl> to enter drag mode.
if keys.CONTROL in event.modifiers:
# TODO: I cannot get the mouse position within the key_press event ...
# so it is not yet implemented. The purpose of this event handler
# is simply trying to highlight the visual node when <Ctrl> is pressed
# but mouse is not moved (just nicer interactivity), so not very
# high priority now.
pass
# Press <Space> to reset camera.
if event.text == ' ':
self.camera.fov = self.fov
self.camera.azimuth = self.azimuth
self.camera.elevation = self.elevation
self.camera.set_range()
self.camera.scale_factor = self.scale_factor
self.camera.scale_factor /= self.zoom_factor
for child in self.view.children:
if type(child) == XYZAxis:
child._update_axis()
# Press <s> to save a screenshot.
if event.text == 's':
screenshot = _screenshot()
io.write_png(self.title + '.png', screenshot)
# Press <d> to toggle drag mode.
if event.text == 'd':
if not self.drag_mode:
self.drag_mode = True
self.camera.viewbox.events.mouse_move.disconnect(
self.camera.viewbox_mouse_event)
else:
self.drag_mode = False
self._exit_drag_mode()
self.camera.viewbox.events.mouse_move.connect(
self.camera.viewbox_mouse_event)
# Press <a> to get the parameters of all visual nodes.
if event.text == 'a':
print("===== All useful parameters ====")
# Canvas size.
print("Canvas size = {}".format(self.size))
# Collect camera parameters.
print("Camera:")
camera_state = self.camera.get_state()
for key, value in camera_state.items():
print(" - {} = {}".format(key, value))
print(" - {} = {}".format('zoom factor', self.zoom_factor))
# Collect slice parameters.
print("Slices:")
pos_dict = {'x': [], 'y': [], 'z': []}
for node in self.view.scene.children:
if type(node) == AxisAlignedImage:
pos = node.pos
if node.seismic_coord_system and node.axis in ['y', 'z']:
pos = node.limit[1] - pos # revert y and z axis
pos_dict[node.axis].append(pos)
for axis, pos in pos_dict.items():
print(" - {}: {}".format(axis, pos))
# Collect the axis legend parameters.
for node in self.view.children:
if type(node) == XYZAxis:
print("XYZAxis loc = {}".format(node.loc))
def animation(self, t):
self.on_draw(DrawEvent('draw'))
return _screenshot((0, 0, self.size[0], self.size[1]))[:, :, :3]
def draw(self):
for i in range(4):
if self._bufXglsl[i]:
fragment = fragment_template % self._bufXglsl[i]
self._bufXglsl[i] = None
frag_handle = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(frag_handle, fragment)
gl.glCompileShader(frag_handle)
status = gl.glGetShaderParameter(frag_handle,
gl.GL_COMPILE_STATUS)
if not status:
errors = gl.glGetShaderInfoLog(frag_handle)
errors = self.process_errors(errors)
print('Shader failed to compile:', file=sys.stderr)
print(errors, file=sys.stderr)
exit(1)
else:
self._BufX[i].set_shaders(vertex, fragment)
gl.glDeleteShader(frag_handle)
if self._glsl:
fragment = fragment_template % self._glsl
self._glsl = None
# Check to see if the shader will compile successfully before we
# set it. We do this here because the ShaderWatcher runs in a
# different thread and so can't access the GL context.
frag_handle = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(frag_handle, fragment)
gl.glCompileShader(frag_handle)
status = gl.glGetShaderParameter(frag_handle,
gl.GL_COMPILE_STATUS)
if not status:
errors = gl.glGetShaderInfoLog(frag_handle)
errors = self.process_errors(errors)
print('Shader failed to compile:', file=sys.stderr)
print(errors, file=sys.stderr)
exit(1)
# Switch to error shader
self._glsl = error_shader
self.update()
else:
self.program.set_shaders(vertex, fragment)
gl.glDeleteShader(frag_handle)
if self._interactive:
for i in range(4):
with self._fboX[self._doubleFboid][i]:
gloo.set_clear_color((0.0, 0.0, 0.0, 0.0))
gloo.clear(color=True, depth=True)
gloo.set_viewport(0, 0, *self.physical_size)
self._BufX[i].draw()
self.program.draw()
if self._ffmpeg_pipe is not None:
img = _screenshot()
self.write_video_frame(img)
self._render_frame_index += 1
if self._render_frame_count is not None \
and self._render_frame_index \
>= self._render_frame_count:
app.quit()
return
self._doubleFbo = not self._doubleFbo
self._doubleFboid=(0 if self._doubleFbo else 1)
self.advance_time()
self.program['iFrame'] = self._render_frame_index
self.set_Buf_uniform('iFrame' , self._render_frame_index)
self.set_channel_input()
self.set_Buf_channel_input()
else:
for i in range(4):
with self._fboX[self._doubleFboid][i]:
gloo.set_clear_color((0.0, 0.0, 0.0, 0.0))
gloo.clear(color=True, depth=True)
gloo.set_viewport(0, 0, *self.physical_size)
self._BufX[i].draw()
with self._fbo:
rs = list(self._render_size)
if self._tile_coord[0] + rs[0] > self._output_size[0]:
rs[0] = self._output_size[0] - self._tile_coord[0]
if self._tile_coord[1] + rs[1] > self._output_size[1]:
rs[1] = self._output_size[1] - self._tile_coord[1]
gloo.set_viewport(0, 0, *rs)
self.program['iOffset'] = self._tile_coord
self.program.draw()
self._doubleFbo = not self._doubleFbo
self._doubleFboid=(0 if self._doubleFbo else 1)
self.program['iFrame'] = self._render_frame_index
self.set_Buf_uniform('iFrame' , self._render_frame_index)
self.set_channel_input()
self.set_Buf_channel_input()
img = _screenshot()
row = self._output_size[1] - self._tile_coord[1] - rs[1]
col = self._tile_coord[0]
self._img[row:row + rs[1], col:col + rs[0], :] = img
def on_draw(self, event):
# Clear screen
gloo.clear('black')
frame = black
if not self.get_lerp('MUTE'):
# Read frame depending on controller status
source = self.sources[self.get_lerp('SOURCE')]
frame = source.read(self.get_lerp('RATE'))
frame = np.flipud(frame) # Why does this need to be flipped?
# Zoom
z = self.get_lerp('ZOOM') # Temp. variable to use same random value for both axes
x = self.get_lerp('X')
y = self.get_lerp('Y')
ox = (W_HD - W) * z
oy = (H_HD - H) * z
a = int(oy + (oy * y))
b = int((H_HD-oy) + (oy * y))
c = int(ox + (ox * x))
d = int((W_HD-ox) + (ox * x))
frame = frame[a:b,c:d,:]
frame = cv2.resize(frame, (W, H))
self.im_cap_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
frame_rgbgray = cv2.cvtColor(self.im_cap_gray, cv2.COLOR_GRAY2RGB)
# Difference image
if self.get_lerp('DIFF'):
# Monochrome
if not self.get_lerp('SAT'):
frame_diff = cv2.absdiff(self.im_last, frame_rgbgray)
self.im_last = frame_rgbgray
self.im_cap = frame_diff
else:
frame_diff = cv2.absdiff(self.im_last, frame_rgb)
self.im_last = frame_rgb
self.im_cap = frame_diff
else:
# Monochrome
if not self.get_lerp('SAT'):
self.im_cap = frame_rgbgray
else:
self.im_cap = frame_rgb
# Generate when button is pressed and LUT, zoom, or pan is changed
# BUG: This can NOT be done by callback functions in the MIDI handler, as the
# callbacks will be queued by mido and then successively released instead of
# going bad
self.new_C1 = self.get_lerp('LUT_C1')
self.new_C2 = self.get_lerp('LUT_C2')
self.new_zoom = self.get_lerp('ZOOM')
self.new_x = self.get_lerp('X')
self.new_y = self.get_lerp('Y')
if self.new_C1 != self.last_C1:
self.regenerate_lut()
self.last_C1 = self.new_C1
if self.get_lerp('GENERATE'):
self.q_map.put(self.im_lut_for_map)
if self.new_C2 != self.last_C2:
self.regenerate_lut()
self.last_C2 = self.new_C2
if self.get_lerp('GENERATE'):
self.q_map.put(self.im_lut_for_map)
if self.new_zoom != self.last_zoom:
self.regenerate_lut()
self.last_zoom = self.new_zoom
if self.get_lerp('GENERATE'):
self.q_map.put(self.im_lut_for_map)
if self.new_x != self.last_x:
self.regenerate_lut()
self.last_x = self.new_x
if self.get_lerp('GENERATE'):
self.q_map.put(self.im_lut_for_map)
if self.new_y != self.last_y:
self.regenerate_lut()
self.last_y = self.new_y
if self.get_lerp('GENERATE'):
self.q_map.put(self.im_lut_for_map)
# Put map comparison map parts together
self.im_map[:,:W2,:] = self.im_map_right
self.im_map[:,W2:,:] = np.flipud(np.fliplr(self.im_cap[:,LEFT_WH2_IN_WH:RIGHT_WH2_IN_WH])) # Why does this need to be flipped?
# Write options
for k,o in self.opt.items():
if o[4]: self.program[o[4]] = self.get_lerp(k)
# Write textures
self.program['u_time'] = (time.time() - self.start_time)
self.program['t_video'][...] = self.im_cap
self.program['t_map'][...] = self.im_map
# Draw
self.program.draw('triangle_strip')
# Feedback
# BUG: Needs to be "treated" once by openCV (-> CPU?) to not produce weird memory leaks
# BUG: Weird scan lines in full screen mode when screen resolution > canvas resolution
# BUG: "Flows" to bottom when activated before full screened/moved to second screen
# WORKAROUND: Start feedback once before moving window, move/full screen while feedback runs
screenshot = cv2.cvtColor(_screenshot(), cv2.COLOR_RGBA2RGB)
self.program['t_feedback'][...] = np.fliplr(screenshot)
# Communicate with control window
control[0] = self.im_cap
control[1] = self.im_lut
control[2] = np.flipud(screenshot) # Why does this need to be flipped?
control[3] = np.flipud(np.fliplr(self.im_map)) # Why does this need to be flipped?
self.time = (time.time() * self.get_lerp('SPEED')) - self.start_time
def animation(self, t):
self.update()
return _screenshot((0,0,self.canvas.size[0],self.canvas.size[1]))[:,:,:3]
def make_frame(t):
surface.set_data(z=Z(t)) # Update the mathematical surface
canvas.on_draw(None) # Update the image on Vispy's canvas
return _screenshot((0, 0, size_pixels[0], size_pixels[1]))
def animation(self, t):
""" Added for animation with MoviePy """
self.program['u_clock'] = 2*t
gloo.clear('black')
self.program.draw('points')
return _screenshot((0, 0, self.size[0], self.size[1]))[:,:,:3]
