def _compute_animation(cfg, animate_pre_render=True):
cfg.duration = 5
cfg.aspect_ratio = (1, 1)
local_size = 2
vertices_data = array.array(
"f",
[
# fmt: off
-0.5,
-0.5,
0.0,
0.5,
-0.5,
0.0,
-0.5,
0.5,
0.0,
0.5,
0.5,
0.0,
# fmt: on
],
)
nb_vertices = 4
input_vertices = ngl.BufferVec3(data=vertices_data, label="vertices")
output_vertices = ngl.BufferVec3(data=vertices_data, label="vertices")
input_block = ngl.Block(fields=[input_vertices], layout="std140")
output_block = ngl.Block(fields=[output_vertices], layout="std140")
rotate_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360)
]
rotate = ngl.Rotate(ngl.Identity(),
axis=(0, 0, 1),
angle=ngl.AnimatedFloat(rotate_animkf))
transform = ngl.UniformMat4(transform=rotate)
program = ngl.ComputeProgram(_ANIMATION_COMPUTE,
workgroup_size=(local_size, local_size, 1))
program.update_properties(dst=ngl.ResourceProps(writable=True))
compute = ngl.Compute(workgroup_count=(nb_vertices / (local_size**2), 1,
1),
program=program)
compute.update_resources(transform=transform,
src=input_block,
dst=output_block)
quad_buffer = ngl.BufferVec3(block=output_block, block_field=0)
geometry = ngl.Geometry(quad_buffer, topology="triangle_strip")
program = ngl.Program(vertex=cfg.get_vert("color"),
fragment=cfg.get_frag("color"))
render = ngl.Render(geometry, program)
render.update_frag_resources(color=ngl.UniformVec3(value=COLORS.sgreen),
opacity=ngl.UniformFloat(1))
children = (compute, render) if animate_pre_render else (render, compute)
return ngl.Group(children=children)
def velocity_triangle_rotate(cfg):
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
anim_kf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360 * 3, "circular_in_out"),
]
anim = ngl.AnimatedFloat(anim_kf)
velocity = ngl.VelocityFloat(anim)
frag = textwrap.dedent("""\
void main()
{
float v = clamp(velocity / 3000., 0.0, 1.0);
ngl_out_color = vec4(v, v / 2.0, 0.0, 1.0);
}
""")
p0, p1, p2 = equilateral_triangle_coords(2.0)
triangle = ngl.RenderColor(COLORS.white, geometry=ngl.Triangle(p0, p1, p2))
triangle = ngl.Rotate(triangle, angle=anim)
prog_c = ngl.Program(vertex=cfg.get_vert("color"), fragment=frag)
circle = ngl.Render(ngl.Circle(radius=1.0, npoints=128), prog_c)
circle.update_frag_resources(velocity=velocity)
return ngl.Group(children=(circle, triangle))
def triangle(cfg, size=0.5):
'''Rotating triangle with edge coloring specified in a vertex attribute'''
b = size * math.sqrt(3) / 2.0
c = size * 1 / 2.
cfg.duration = 3.
cfg.aspect_ratio = (1, 1)
colors_data = array.array(
'f', [0.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0])
colors_buffer = ngl.BufferVec4(data=colors_data)
triangle = ngl.Triangle((-b, -c, 0), (b, -c, 0), (0, size, 0))
p = ngl.Program(fragment=cfg.get_frag('color'),
vertex=cfg.get_vert('triangle'))
p.update_vert_out_vars(color=ngl.IOVec4())
node = ngl.Render(triangle, p)
node.update_attributes(edge_color=colors_buffer)
animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration / 3., -360 / 3., 'exp_in_out'),
ngl.AnimKeyFrameFloat(2 * cfg.duration / 3., -2 * 360 / 3.,
'exp_in_out'),
ngl.AnimKeyFrameFloat(cfg.duration, -360, 'exp_in_out')
]
node = ngl.Rotate(node, anim=ngl.AnimatedFloat(animkf))
return node
def _get_rtt_scene(cfg, features='depth', texture_ds_format=None, samples=0, mipmap_filter='none', sample_depth=False):
cfg.duration = 10
cfg.aspect_ratio = (1, 1)
cube = _get_cube()
program = ngl.Program(vertex=_RENDER_CUBE_VERT, fragment=_RENDER_CUBE_FRAG)
program.update_vert_out_vars(var_normal=ngl.IOVec3())
render = ngl.Render(cube, program)
render = ngl.Scale(render, (0.5, 0.5, 0.5))
for i in range(3):
rot_animkf = ngl.AnimatedFloat([
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360 * (i + 1))
])
axis = [int(i == x) for x in range(3)]
render = ngl.Rotate(render, axis=axis, anim=rot_animkf)
config = ngl.GraphicConfig(render, depth_test=True)
camera = ngl.Camera(
config,
eye=(0.0, 0.0, 3.0),
center=(0.0, 0.0, 0.0),
up=(0.0, 1.0, 0.0),
perspective=(45.0, cfg.aspect_ratio_float),
clipping=(1.0, 10.0),
)
size = 1024
texture_depth = None
if texture_ds_format:
texture_depth = ngl.Texture2D(width=size, height=size, format=texture_ds_format)
texture = ngl.Texture2D(
width=size,
height=size,
min_filter='linear',
mipmap_filter=mipmap_filter,
)
rtt = ngl.RenderToTexture(
camera,
[texture],
features=features,
depth_texture=texture_depth,
samples=samples,
clear_color=(0, 0, 0, 1),
)
quad = ngl.Quad((-1, -1, 0), (2, 0, 0), (0, 2, 0))
if sample_depth:
program = ngl.Program(vertex=cfg.get_vert('texture'), fragment=_RENDER_DEPTH)
program.update_vert_out_vars(var_tex0_coord=ngl.IOVec2(), var_uvcoord=ngl.IOVec2())
render = ngl.Render(quad, program)
render.update_frag_resources(tex0=texture_depth)
else:
program = ngl.Program(vertex=cfg.get_vert('texture'), fragment=cfg.get_frag('texture'))
program.update_vert_out_vars(var_tex0_coord=ngl.IOVec2(), var_uvcoord=ngl.IOVec2())
render = ngl.Render(quad, program)
render.update_frag_resources(tex0=texture)
return ngl.Group(children=(rtt, render))
def animated_uniform(cfg):
'''Uniform mat4 animated with a transform chain'''
m0 = cfg.medias[0]
cfg.aspect_ratio = (m0.width, m0.height)
q = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
m = ngl.Media(m0.filename)
t = ngl.Texture2D(data_src=m)
p = ngl.Program(vertex=cfg.get_vert('texture'),
fragment=cfg.get_frag('matrix-transform'))
ts = ngl.Render(q, p)
ts.update_textures(tex0=t)
scale_animkf = [
ngl.AnimKeyFrameVec3(0, (1, 1, 1)),
ngl.AnimKeyFrameVec3(cfg.duration, (0.1, 0.1, 0.1), 'quartic_out')
]
s = ngl.Scale(ngl.Identity(), anim=ngl.AnimatedVec3(scale_animkf))
rotate_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360, 'exp_out')
]
r = ngl.Rotate(s, axis=(0, 0, 1), anim=ngl.AnimatedFloat(rotate_animkf))
u = ngl.UniformMat4(transform=r)
ts.update_uniforms(matrix=u)
return ts
def animated_uniform(cfg):
"""Uniform mat4 animated with a transform chain"""
m0 = cfg.medias[0]
cfg.aspect_ratio = (m0.width, m0.height)
q = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
m = ngl.Media(m0.filename)
t = ngl.Texture2D(data_src=m)
p = ngl.Program(vertex=cfg.get_vert("texture"),
fragment=cfg.get_frag("matrix-transform"))
p.update_vert_out_vars(var_uvcoord=ngl.IOVec2(),
var_tex0_coord=ngl.IOVec2())
ts = ngl.Render(q, p)
ts.update_frag_resources(tex0=t)
scale_animkf = [
ngl.AnimKeyFrameVec3(0, (1, 1, 1)),
ngl.AnimKeyFrameVec3(cfg.duration, (0.1, 0.1, 0.1), "quartic_out"),
]
s = ngl.Scale(ngl.Identity(), factors=ngl.AnimatedVec3(scale_animkf))
rotate_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360, "exp_out")
]
r = ngl.Rotate(s, axis=(0, 0, 1), angle=ngl.AnimatedFloat(rotate_animkf))
u = ngl.UniformMat4(transform=r)
ts.update_frag_resources(matrix=u)
return ts
def py_bindings_allow_node():
c = ngl.Camera(eye=(0, 1, 0))
assert c.set_eye(ngl.EvalVec3()) == 0
assert c.set_eye(1, 0, 0) == 0
c = ngl.Camera(eye=ngl.NoiseVec3())
assert c.set_eye(1, 0, 0) == 0
assert c.set_eye(ngl.UniformVec3()) == 0
r = ngl.Rotate(angle=30)
assert r.set_angle(ngl.NoiseFloat()) == 0
assert r.set_angle(-45) == 0
r = ngl.Rotate(angle=ngl.EvalFloat())
assert r.set_angle(90) == 0
assert r.set_angle(ngl.UniformFloat()) == 0
def triangle(cfg, size=4 / 3):
"""Rotating triangle with edge coloring specified in a vertex attribute"""
cfg.duration = 3.0
cfg.aspect_ratio = (1, 1)
colors_data = array.array("f",
[0.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 0.0])
colors_buffer = ngl.BufferVec3(data=colors_data)
p0, p1, p2 = equilateral_triangle_coords(size)
triangle = ngl.Triangle(p0, p1, p2)
p = ngl.Program(fragment=cfg.get_frag("color"),
vertex=cfg.get_vert("triangle"))
p.update_vert_out_vars(color=ngl.IOVec3())
node = ngl.Render(triangle, p)
node.update_attributes(edge_color=colors_buffer)
node.update_frag_resources(opacity=ngl.UniformFloat(1))
animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration / 3.0, -360 / 3.0, "exp_in_out"),
ngl.AnimKeyFrameFloat(2 * cfg.duration / 3.0, -2 * 360 / 3.0,
"exp_in_out"),
ngl.AnimKeyFrameFloat(cfg.duration, -360, "exp_in_out"),
]
node = ngl.Rotate(node, angle=ngl.AnimatedFloat(animkf))
return node
def rtt_clear_attachment_with_timeranges(cfg):
cfg.aspect_ratio = (1, 1)
# Time-disabled full screen white quad
render = ngl.RenderColor(COLORS.white)
time_range_filter = ngl.TimeRangeFilter(render)
time_range_filter.add_ranges(ngl.TimeRangeModeNoop(0))
# Intermediate no-op RTT to force the use of a different render pass internally
texture = ngl.Texture2D(width=32, height=32)
rtt_noop = ngl.RenderToTexture(ngl.Identity(), [texture])
# Centered rotating quad
quad = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
render = ngl.RenderColor(COLORS.orange, geometry=quad)
animkf = [ngl.AnimKeyFrameFloat(0, 0), ngl.AnimKeyFrameFloat(cfg.duration, -360)]
render = ngl.Rotate(render, angle=ngl.AnimatedFloat(animkf))
group = ngl.Group(children=(time_range_filter, rtt_noop, render))
# Root RTT
texture = ngl.Texture2D(width=512, height=512)
rtt = ngl.RenderToTexture(group, [texture])
# Full screen render of the root RTT result
render = ngl.RenderTexture(texture)
return ngl.Group(children=(rtt, render))
def animated_square(cfg, color=(1, 0.66, 0), rotate=True, scale=True, translate=True):
"""Animated Translate/Scale/Rotate on a square"""
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
sz = 1 / 3.0
q = ngl.Quad((-sz / 2, -sz / 2, 0), (sz, 0, 0), (0, sz, 0))
node = ngl.RenderColor(color, geometry=q)
coords = [(-1, 1), (1, 1), (1, -1), (-1, -1), (-1, 1)]
if rotate:
animkf = (ngl.AnimKeyFrameFloat(0, 0), ngl.AnimKeyFrameFloat(cfg.duration, 360))
node = ngl.Rotate(node, angle=ngl.AnimatedFloat(animkf))
if scale:
animkf = (
ngl.AnimKeyFrameVec3(0, (1, 1, 1)),
ngl.AnimKeyFrameVec3(cfg.duration / 2, (2, 2, 2)),
ngl.AnimKeyFrameVec3(cfg.duration, (1, 1, 1)),
)
node = ngl.Scale(node, factors=ngl.AnimatedVec3(animkf))
if translate:
animkf = []
tscale = 1.0 / float(len(coords) - 1) * cfg.duration
for i, xy in enumerate(coords):
pos = (xy[0] * 0.5, xy[1] * 0.5, 0)
t = i * tscale
animkf.append(ngl.AnimKeyFrameVec3(t, pos))
node = ngl.Translate(node, vector=ngl.AnimatedVec3(animkf))
return node
def cube(cfg, display_depth_buffer=False):
'''
Cube with a common media Texture but a different color tainting on each side.
Also includes a depth map visualization.
'''
cube = ngl.Group(label='cube')
frag_data = cfg.get_frag('tex-tint')
program = ngl.Program(fragment=frag_data)
texture = ngl.Texture2D(data_src=ngl.Media(cfg.medias[0].filename))
children = [_get_cube_side(texture, program, qi[0], qi[1], qi[2], qi[3]) for qi in _get_cube_quads()]
cube.add_children(*children)
for i in range(3):
rot_animkf = ngl.AnimatedFloat([ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360 * (i + 1))])
axis = [int(i == x) for x in range(3)]
cube = ngl.Rotate(cube, axis=axis, anim=rot_animkf)
config = ngl.GraphicConfig(cube, depth_test=True)
camera = ngl.Camera(config)
camera.set_eye(0.0, 0.0, 2.0)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_perspective(45.0, cfg.aspect_ratio_float)
camera.set_clipping(1.0, 10.0)
if not display_depth_buffer:
return camera
else:
group = ngl.Group()
depth_texture = ngl.Texture2D()
depth_texture.set_format('d16_unorm')
depth_texture.set_width(640)
depth_texture.set_height(480)
texture = ngl.Texture2D()
texture.set_width(640)
texture.set_height(480)
rtt = ngl.RenderToTexture(camera)
rtt.add_color_textures(texture)
rtt.set_depth_texture(depth_texture)
quad = ngl.Quad((-1.0, -1.0, 0), (1, 0, 0), (0, 1, 0))
program = ngl.Program()
render = ngl.Render(quad, program)
render.update_textures(tex0=texture)
group.add_children(rtt, render)
quad = ngl.Quad((0.0, 0.0, 0), (1, 0, 0), (0, 1, 0))
program = ngl.Program()
render = ngl.Render(quad, program)
render.update_textures(tex0=depth_texture)
group.add_children(rtt, render)
return group
def animated_camera(cfg, rotate=True):
'''Animated camera around a scene'''
g = ngl.Group()
q = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
m = ngl.Media(cfg.medias[0].filename)
t = ngl.Texture2D(data_src=m)
program = ngl.Program(vertex=cfg.get_vert('texture'),
fragment=cfg.get_frag('texture'))
program.update_vert_out_vars(var_uvcoord=ngl.IOVec2(),
var_tex0_coord=ngl.IOVec2())
node = ngl.Render(q, program)
node.update_frag_resources(tex0=t)
g.add_children(node)
translate = ngl.Translate(node, vector=(-0.6, 0.8, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(0.6, 0.8, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(-0.6, -0.5, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(0.6, -0.5, -1))
g.add_children(translate)
g = ngl.GraphicConfig(g, depth_test=True)
camera = ngl.Camera(g)
camera.set_eye(0, 0, 2)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_perspective(45.0, cfg.aspect_ratio_float)
camera.set_clipping(0.1, 10.0)
tr_animkf = [
ngl.AnimKeyFrameVec3(0, (0.0, 0.0, 0.0)),
ngl.AnimKeyFrameVec3(10, (0.0, 0.0, 3.0), 'exp_out')
]
node = ngl.Translate(ngl.Identity(), anim=ngl.AnimatedVec3(tr_animkf))
if rotate:
rot_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360, 'exp_out')
]
node = ngl.Rotate(node,
axis=(0, 1, 0),
anim=ngl.AnimatedFloat(rot_animkf))
camera.set_eye_transform(node)
fov_animkf = [
ngl.AnimKeyFrameFloat(0.5, 60.0),
ngl.AnimKeyFrameFloat(cfg.duration, 45.0, 'exp_out')
]
camera.set_fov_anim(ngl.AnimatedFloat(fov_animkf))
return camera
def stl(cfg, stl=None, scale=0.8):
"""Load and display a sphere generated with OpenSCAD"""
if stl is None:
# generated with: echo 'sphere($fn=15);'>sphere.scad; openscad sphere.scad -o sphere.stl
stl = op.join(op.dirname(__file__), "data", "sphere.stl")
normals_data = array.array("f")
vertices_data = array.array("f")
solid_label = None
normal = None
with open(stl) as fp:
for line in fp.readlines():
line = line.strip()
if line.startswith("solid"):
solid_label = line.split(None, 1)[1]
elif line.startswith("facet normal"):
_, _, normal = line.split(None, 2)
normal = [float(f) for f in normal.split()]
elif normal and line.startswith("vertex"):
_, vertex = line.split(None, 1)
vertex = [float(f) for f in vertex.split()]
normals_data.extend(normal)
vertices_data.extend(vertex)
vertices = ngl.BufferVec3(data=vertices_data)
normals = ngl.BufferVec3(data=normals_data)
g = ngl.Geometry(vertices=vertices, normals=normals)
p = ngl.Program(vertex=cfg.get_vert("colored-normals"),
fragment=cfg.get_frag("colored-normals"))
p.update_vert_out_vars(var_normal=ngl.IOVec3(),
var_uvcoord=ngl.IOVec2(),
var_tex0_coord=ngl.IOVec2())
solid = ngl.Render(g, p, label=solid_label)
solid = ngl.GraphicConfig(solid, depth_test=True)
solid = ngl.Scale(solid, [scale] * 3)
for i in range(3):
rot_animkf = ngl.AnimatedFloat([
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360 * (i + 1))
])
axis = [int(i == x) for x in range(3)]
solid = ngl.Rotate(solid, axis=axis, angle=rot_animkf)
camera = ngl.Camera(solid)
camera.set_eye(2.0, 2.0, 2.0)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_perspective(45.0, cfg.aspect_ratio_float)
camera.set_clipping(1.0, 10.0)
return camera
def transform_animated_camera(cfg):
cfg.duration = 5.
g = ngl.Group()
elems = (
('red', None),
('yellow', (-0.6, 0.8, -1)),
('green', (0.6, 0.8, -1)),
('cyan', (-0.6, -0.5, -1)),
('magenta', (0.6, -0.5, -1)),
)
quad = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
prog = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
for color, vector in elems:
node = ngl.Render(quad, prog)
node.update_uniforms(color=ngl.UniformVec4(value=COLORS[color]))
if vector:
node = ngl.Translate(node, vector=vector)
g.add_children(node)
g = ngl.GraphicConfig(g, depth_test=True)
camera = ngl.Camera(g)
camera.set_eye(0, 0, 2)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_perspective(45.0, cfg.aspect_ratio_float)
camera.set_clipping(0.1, 10.0)
tr_animkf = [
ngl.AnimKeyFrameVec3(0, (0.0, 0.0, 0.0)),
ngl.AnimKeyFrameVec3(cfg.duration, (0.0, 0.0, 3.0))
]
eye_transform = ngl.Translate(ngl.Identity(),
anim=ngl.AnimatedVec3(tr_animkf))
rot_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360)
]
eye_transform = ngl.Rotate(eye_transform,
axis=(0, 1, 0),
anim=ngl.AnimatedFloat(rot_animkf))
camera.set_eye_transform(eye_transform)
fov_animkf = [
ngl.AnimKeyFrameFloat(0.5, 60.0),
ngl.AnimKeyFrameFloat(cfg.duration, 45.0)
]
camera.set_fov_anim(ngl.AnimatedFloat(fov_animkf))
return camera
def animated_camera(cfg, rotate=True):
"""Animated camera around a scene"""
g = ngl.Group()
q = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
m = ngl.Media(cfg.medias[0].filename)
t = ngl.Texture2D(data_src=m)
node = ngl.RenderTexture(t, geometry=q)
g.add_children(node)
translate = ngl.Translate(node, vector=(-0.6, 0.8, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(0.6, 0.8, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(-0.6, -0.5, -1))
g.add_children(translate)
translate = ngl.Translate(node, vector=(0.6, -0.5, -1))
g.add_children(translate)
g = ngl.GraphicConfig(g, depth_test=True)
camera = ngl.Camera(g)
camera.set_eye(0, 0, 2)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_clipping(0.1, 10.0)
tr_animkf = [
ngl.AnimKeyFrameVec3(0, (0.0, 0.0, 0.0)),
ngl.AnimKeyFrameVec3(10, (0.0, 0.0, 3.0), "exp_out")
]
node = ngl.Translate(ngl.Identity(), vector=ngl.AnimatedVec3(tr_animkf))
if rotate:
rot_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360, "exp_out")
]
node = ngl.Rotate(node,
axis=(0, 1, 0),
angle=ngl.AnimatedFloat(rot_animkf))
camera.set_eye_transform(node)
perspective_animkf = [
ngl.AnimKeyFrameVec2(0.5, (60.0, cfg.aspect_ratio_float)),
ngl.AnimKeyFrameVec2(cfg.duration, (45.0, cfg.aspect_ratio_float),
"exp_out"),
]
camera.set_perspective(ngl.AnimatedVec2(perspective_animkf))
return camera
def compute_animation(cfg):
cfg.duration = 5
cfg.aspect_ratio = (1, 1)
local_size = 2
vertices_data = array.array('f', [
-0.5,
-0.5,
0.0,
0.5,
-0.5,
0.0,
-0.5,
0.5,
0.0,
0.5,
0.5,
0.0,
])
nb_vertices = 4
input_vertices = ngl.BufferVec3(data=vertices_data, label='vertices')
output_vertices = ngl.BufferVec3(data=vertices_data, label='vertices')
input_block = ngl.Block(fields=[input_vertices], layout='std140')
output_block = ngl.Block(fields=[output_vertices], layout='std140')
rotate_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360)
]
rotate = ngl.Rotate(ngl.Identity(),
axis=(0, 0, 1),
anim=ngl.AnimatedFloat(rotate_animkf))
transform = ngl.UniformMat4(transform=rotate)
program = ngl.ComputeProgram(_ANIMATION_COMPUTE,
workgroup_size=(local_size, local_size, 1))
program.update_properties(dst=ngl.ResourceProps(writable=True))
compute = ngl.Compute(workgroup_count=(nb_vertices / (local_size**2), 1,
1),
program=program)
compute.update_resources(transform=transform,
src=input_block,
dst=output_block)
quad_buffer = ngl.BufferVec3(block=output_block, block_field=0)
geometry = ngl.Geometry(quad_buffer, topology='triangle_strip')
program = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
render = ngl.Render(geometry, program)
render.update_frag_resources(color=ngl.UniformVec4(value=COLORS['sgreen']))
return ngl.Group(children=(compute, render))
def transform_animated_camera(cfg):
cfg.duration = 5.0
g = ngl.Group()
elems = (
# fmt: off
(COLORS.red, None),
(COLORS.yellow, (-0.6, 0.8, -1)),
(COLORS.green, (0.6, 0.8, -1)),
(COLORS.cyan, (-0.6, -0.5, -1)),
(COLORS.magenta, (0.6, -0.5, -1)),
# fmt: on
)
quad = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
for color, vector in elems:
node = ngl.RenderColor(color, geometry=quad)
if vector:
node = ngl.Translate(node, vector=vector)
g.add_children(node)
g = ngl.GraphicConfig(g, depth_test=True)
camera = ngl.Camera(g)
camera.set_eye(0, 0, 2)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_clipping(0.1, 10.0)
tr_animkf = [
ngl.AnimKeyFrameVec3(0, (0.0, 0.0, 0.0)),
ngl.AnimKeyFrameVec3(cfg.duration, (0.0, 0.0, 3.0))
]
eye_transform = ngl.Translate(ngl.Identity(),
vector=ngl.AnimatedVec3(tr_animkf))
rot_animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360)
]
eye_transform = ngl.Rotate(eye_transform,
axis=(0, 1, 0),
angle=ngl.AnimatedFloat(rot_animkf))
camera.set_eye_transform(eye_transform)
perspective_animkf = [
ngl.AnimKeyFrameVec2(0.5, (60.0, cfg.aspect_ratio_float)),
ngl.AnimKeyFrameVec2(cfg.duration, (45.0, cfg.aspect_ratio_float)),
]
camera.set_perspective(ngl.AnimatedVec2(perspective_animkf))
return camera
def rtt_clear_attachment_with_timeranges(cfg):
cfg.aspect_ratio = (1, 1)
# Time-disabled full screen white quad
quad = ngl.Quad((-1, -1, 0), (2, 0, 0), (0, 2, 0))
program = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
program.update_vert_out_vars(var_tex0_coord=ngl.IOVec2(),
var_uvcoord=ngl.IOVec2())
render = ngl.Render(quad, program)
render.update_frag_resources(color=ngl.UniformVec4(value=COLORS['white']))
time_range_filter = ngl.TimeRangeFilter(render)
time_range_filter.add_ranges(ngl.TimeRangeModeNoop(0))
# Intermediate no-op RTT to force the use of a different render pass internally
texture = ngl.Texture2D(width=32, height=32)
rtt_noop = ngl.RenderToTexture(ngl.Identity(), [texture])
# Centered rotating quad
quad = ngl.Quad((-0.5, -0.5, 0), (1, 0, 0), (0, 1, 0))
program = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
program.update_vert_out_vars(var_tex0_coord=ngl.IOVec2(),
var_uvcoord=ngl.IOVec2())
render = ngl.Render(quad, program)
render.update_frag_resources(color=ngl.UniformVec4(value=COLORS['orange']))
animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, -360)
]
render = ngl.Rotate(render, anim=ngl.AnimatedFloat(animkf))
group = ngl.Group(children=(time_range_filter, rtt_noop, render))
# Root RTT
texture = ngl.Texture2D(width=512, height=512)
rtt = ngl.RenderToTexture(group, [texture])
# Full screen render of the root RTT result
quad = ngl.Quad((-1, -1, 0), (2, 0, 0), (0, 2, 0))
program = ngl.Program(vertex=cfg.get_vert('texture'),
fragment=cfg.get_frag('texture'))
program.update_vert_out_vars(var_tex0_coord=ngl.IOVec2(),
var_uvcoord=ngl.IOVec2())
render = ngl.Render(quad, program)
render.update_frag_resources(tex0=texture)
return ngl.Group(children=(rtt, render))
def compute_animation(cfg):
cfg.duration = 5
cfg.aspect_ratio = (1, 1)
local_size = 2
shader_version = '310 es' if cfg.backend == 'gles' else '430'
shader_data = dict(
version=shader_version,
local_size=local_size,
)
compute_shader = _ANIMATION_COMPUTE % shader_data
vertex_shader = _ANIMATION_VERT % shader_data
fragment_shader = _ANIMATION_FRAG % shader_data
vertices_data = array.array('f', [
-0.5, -0.5, 0.0,
0.5, -0.5, 0.0,
0.5, 0.5, 0.0,
-0.5, 0.5, 0.0,
])
nb_vertices = 4
input_vertices = ngl.BufferVec3(data=vertices_data)
output_vertices = ngl.BufferVec3(data=vertices_data)
input_block = ngl.Block(fields=[input_vertices], layout='std140')
output_block = ngl.Block(fields=[output_vertices], layout='std430')
rotate_animkf = [ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360)]
rotate = ngl.Rotate(ngl.Identity(), axis=(0, 0, 1), anim=ngl.AnimatedFloat(rotate_animkf))
transform = ngl.UniformMat4(transform=rotate)
program = ngl.ComputeProgram(compute_shader)
compute = ngl.Compute(nb_vertices / (local_size ** 2), 1, 1, program)
compute.update_uniforms(transform=transform)
compute.update_blocks(input_block=input_block, output_block=output_block)
quad_buffer = ngl.BufferVec3(block=output_block, block_field=0)
geometry = ngl.Geometry(quad_buffer, topology='triangle_fan')
program = ngl.Program(vertex=vertex_shader, fragment=fragment_shader)
render = ngl.Render(geometry, program)
render.update_uniforms(color=ngl.UniformVec4(value=COLORS['sgreen']))
return ngl.Group(children=(compute, render))
def fibo(cfg, n=8):
'''Fibonacci with a recursive tree (nodes inherit transforms)'''
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
p = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
fib = [0, 1, 1]
for i in range(2, n):
fib.append(fib[i] + fib[i - 1])
fib = fib[::-1]
shift = 1 / 3. # XXX: what's the exact math here?
shape_scale = 1. / ((2. - shift) * sum(fib))
orig = (-shift, -shift, 0)
g = None
root = None
for i, x in enumerate(fib[:-1]):
w = x * shape_scale
gray = 1. - i / float(n)
color = [gray, gray, gray, 1]
q = ngl.Quad(orig, (w, 0, 0), (0, w, 0))
render = ngl.Render(q, p)
render.update_frag_resources(color=ngl.UniformVec4(value=color))
new_g = ngl.Group()
animkf = [
ngl.AnimKeyFrameFloat(0, 90),
ngl.AnimKeyFrameFloat(cfg.duration / 2, -90, 'exp_in_out'),
ngl.AnimKeyFrameFloat(cfg.duration, 90, 'exp_in_out')
]
rot = ngl.Rotate(new_g, anchor=orig, anim=ngl.AnimatedFloat(animkf))
if g:
g.add_children(rot)
else:
root = rot
g = new_g
new_g.add_children(render)
orig = (orig[0] + w, orig[1] + w, 0)
return root
def animated_circles(cfg):
'''Simple cyclic circles animation'''
group = ngl.Group()
cfg.duration = 5.
cfg.aspect_ratio = (1, 1)
radius = 0.2
n = 10
step = 360. / n
shape = ngl.Circle(radius=radius, npoints=128)
prog = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
render = ngl.Render(shape, prog)
render.update_uniforms(color=ngl.UniformVec4([1.0] * 4))
for i in range(n):
mid_time = cfg.duration / 2.0
start_time = mid_time / (i + 2)
end_time = cfg.duration - start_time
scale_animkf = [
ngl.AnimKeyFrameVec3(start_time, (0, 0, 0)),
ngl.AnimKeyFrameVec3(mid_time, (1.0, 1.0, 1.0), 'exp_out'),
ngl.AnimKeyFrameVec3(end_time, (0, 0, 0), 'exp_in'),
]
angle = i * step
rotate_animkf = [
ngl.AnimKeyFrameFloat(start_time, 0),
ngl.AnimKeyFrameFloat(mid_time, angle, 'exp_out'),
ngl.AnimKeyFrameFloat(end_time, 0, 'exp_in'),
]
tnode = render
tnode = ngl.Scale(tnode, anim=ngl.AnimatedVec3(scale_animkf))
tnode = ngl.Translate(tnode, vector=(1 - radius, 0, 0))
tnode = ngl.Rotate(tnode, anim=ngl.AnimatedFloat(rotate_animkf))
group.add_children(tnode)
return group
def obj(cfg, n=0.5, model=None):
"""Load and display a cube object (generated with Blender)"""
if model is None:
model = op.join(op.dirname(__file__), "data", "model.obj")
with open(model) as fp:
vertices_data, uvs_data, normals_data = _load_model(fp)
vertices = ngl.BufferVec3(data=vertices_data)
texcoords = ngl.BufferVec2(data=uvs_data)
normals = ngl.BufferVec3(data=normals_data)
q = ngl.Geometry(vertices, texcoords, normals)
m = ngl.Media(cfg.medias[0].filename)
t = ngl.Texture2D(data_src=m)
p = ngl.Program(vertex=cfg.get_vert("tex-tint-normals"),
fragment=cfg.get_frag("tex-tint-normals"))
p.update_vert_out_vars(var_normal=ngl.IOVec3(),
var_uvcoord=ngl.IOVec2(),
var_tex0_coord=ngl.IOVec2())
render = ngl.Render(q, p)
render.update_frag_resources(tex0=t)
render = ngl.GraphicConfig(render, depth_test=True)
animkf = [
ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360 * 2)
]
rot = ngl.Rotate(render,
label="roty",
axis=(0, 1, 0),
angle=ngl.AnimatedFloat(animkf))
camera = ngl.Camera(rot)
camera.set_eye(2.0, 2.0, 2.0)
camera.set_center(0.0, 0.0, 0.0)
camera.set_up(0.0, 1.0, 0.0)
camera.set_perspective(45.0, cfg.aspect_ratio_float)
camera.set_clipping(1.0, 10.0)
return camera
def _get_random_transform(cfg, rng, t0, t1, child):
translate = lambda rng, child: ngl.Translate(
child,
vector=_get_random_animated_vec3(rng, t0, t1, _get_random_position),
)
scale = lambda rng, child: ngl.Scale(
child,
factors=_get_random_animated_vec3(rng, t0, t1, _get_random_factors),
anchor=_get_random_anchor(rng),
)
rotate = lambda rng, child: ngl.Rotate(
child,
angle=_get_random_animated_float(rng, t0, t1, _get_random_angle),
anchor=_get_random_anchor(rng),
)
for i in range(rng.randint(1, 2)):
trf_func = rng.choice((translate, scale, rotate))
child = trf_func(rng, child)
return child
def _shape_geometry(cfg, set_normals=False, set_indices=False):
# Fake cube (3 faces only) obtained from:
# echo 'cube();'>x.scad; openscad x.scad -o x.stl
vertices = array.array('f', [x - 0.5 for x in [
1,1,0, 0,1,1, 1,1,1,
0,1,1, 1,1,0, 0,1,0,
0,0,0, 0,1,1, 0,1,0,
0,1,1, 0,0,0, 0,0,1,
0,1,1, 1,0,1, 1,1,1,
1,0,1, 0,1,1, 0,0,1,
]])
normals = array.array('f', [
0,1,0, 0,1,0, 0,1,0,
0,1,0, 0,1,0, 0,1,0,
-1,0,0, -1,0,0, -1,0,0,
-1,0,0, -1,0,0, -1,0,0,
0,0,1, 0,0,1, 0,0,1,
0,0,1, 0,0,1, 0,0,1,
])
vertices_buffer = ngl.BufferVec3(data=vertices)
normals_buffer = ngl.BufferVec3(data=normals)
cfg.aspect_ratio = (1, 1)
geometry = ngl.Geometry(vertices=vertices_buffer)
if set_normals:
geometry.set_normals(normals_buffer)
prog = ngl.Program(vertex=cfg.get_vert('colored-normals'), fragment=cfg.get_frag('colored-normals'))
prog.update_vert_out_vars(var_normal=ngl.IOVec3())
render = ngl.Render(geometry, prog)
else:
render = _render_shape(cfg, geometry, COLORS['magenta'])
if set_indices:
indices = array.array('H', list(range(3 * 6)))
indices_buffer = ngl.BufferUShort(data=indices)
geometry.set_indices(indices_buffer)
return ngl.Rotate(render, 45, axis=(1, 1, 1))
def fibo(cfg, n=8):
"""Fibonacci with a recursive tree (nodes inherit transforms)"""
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
fib = [0, 1, 1]
for i in range(2, n):
fib.append(fib[i] + fib[i - 1])
fib = fib[::-1]
shift = 1 / 3.0 # XXX: what's the exact math here?
shape_scale = 1.0 / ((2.0 - shift) * sum(fib))
orig = (-shift, -shift, 0)
g = None
root = None
for i, x in enumerate(fib[:-1]):
w = x * shape_scale
gray = 1.0 - i / float(n)
color = (gray, gray, gray)
q = ngl.Quad(orig, (w, 0, 0), (0, w, 0))
render = ngl.RenderColor(color, geometry=q)
new_g = ngl.Group()
animkf = [
ngl.AnimKeyFrameFloat(0, 90),
ngl.AnimKeyFrameFloat(cfg.duration / 2, -90, "exp_in_out"),
ngl.AnimKeyFrameFloat(cfg.duration, 90, "exp_in_out"),
]
rot = ngl.Rotate(new_g, anchor=orig, angle=ngl.AnimatedFloat(animkf))
if g:
g.add_children(rot)
else:
root = rot
g = new_g
new_g.add_children(render)
orig = (orig[0] + w, orig[1] + w, 0)
assert root is not None
return root
def animated_square(cfg,
color=(1, 0.66, 0, 1),
rotate=True,
scale=True,
translate=True):
'''Animated Translate/Scale/Rotate on a square'''
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
sz = 1 / 3.
q = ngl.Quad((-sz / 2, -sz / 2, 0), (sz, 0, 0), (0, sz, 0))
p = ngl.Program(vertex=cfg.get_vert('color'),
fragment=cfg.get_frag('color'))
node = ngl.Render(q, p)
ucolor = ngl.UniformVec4(value=color)
node.update_uniforms(color=ucolor)
coords = [(-1, 1), (1, 1), (1, -1), (-1, -1), (-1, 1)]
if rotate:
animkf = (ngl.AnimKeyFrameFloat(0, 0),
ngl.AnimKeyFrameFloat(cfg.duration, 360))
node = ngl.Rotate(node, anim=ngl.AnimatedFloat(animkf))
if scale:
animkf = (ngl.AnimKeyFrameVec3(0, (1, 1, 1)),
ngl.AnimKeyFrameVec3(cfg.duration / 2, (2, 2, 2)),
ngl.AnimKeyFrameVec3(cfg.duration, (1, 1, 1)))
node = ngl.Scale(node, anim=ngl.AnimatedVec3(animkf))
if translate:
animkf = []
tscale = 1. / float(len(coords) - 1) * cfg.duration
for i, xy in enumerate(coords):
pos = (xy[0] * .5, xy[1] * .5, 0)
t = i * tscale
animkf.append(ngl.AnimKeyFrameVec3(t, pos))
node = ngl.Translate(node, anim=ngl.AnimatedVec3(animkf))
return node
def animated_circles(cfg):
"""Simple cyclic circles animation"""
group = ngl.Group()
cfg.duration = 5.0
cfg.aspect_ratio = (1, 1)
radius = 0.2
n = 10
step = 360.0 / n
shape = ngl.Circle(radius=radius, npoints=128)
render = ngl.RenderColor(geometry=shape)
for i in range(n):
mid_time = cfg.duration / 2.0
start_time = mid_time / (i + 2)
end_time = cfg.duration - start_time
scale_animkf = [
ngl.AnimKeyFrameVec3(start_time, (0, 0, 0)),
ngl.AnimKeyFrameVec3(mid_time, (1.0, 1.0, 1.0), "exp_out"),
ngl.AnimKeyFrameVec3(end_time, (0, 0, 0), "exp_in"),
]
angle = i * step
rotate_animkf = [
ngl.AnimKeyFrameFloat(start_time, 0),
ngl.AnimKeyFrameFloat(mid_time, angle, "exp_out"),
ngl.AnimKeyFrameFloat(end_time, 0, "exp_in"),
]
tnode = render
tnode = ngl.Scale(tnode, factors=ngl.AnimatedVec3(scale_animkf))
tnode = ngl.Translate(tnode, vector=(1 - radius, 0, 0))
tnode = ngl.Rotate(tnode, angle=ngl.AnimatedFloat(rotate_animkf))
group.add_children(tnode)
return group
def _shape_geometry(cfg, set_normals=False, set_indices=False):
# Fake cube (3 faces only) obtained from:
# echo 'cube();'>x.scad; openscad x.scad -o x.stl
vertices = array.array(
"f",
[
x - 0.5 for x in [
# fmt: off
1,
1,
0,
0,
1,
1,
1,
1,
1,
0,
1,
1,
1,
1,
0,
0,
1,
0,
0,
0,
0,
0,
1,
1,
0,
1,
0,
0,
1,
1,
0,
0,
0,
0,
0,
1,
0,
1,
1,
1,
0,
1,
1,
1,
1,
1,
0,
1,
0,
1,
1,
0,
0,
1,
# fmt: on
]
],
)
normals = array.array(
"f",
[
# fmt: off
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
-1,
0,
0,
-1,
0,
0,
-1,
0,
0,
-1,
0,
0,
-1,
0,
0,
-1,
0,
0,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
0,
0,
1,
# fmt: on
],
)
vertices_buffer = ngl.BufferVec3(data=vertices)
normals_buffer = ngl.BufferVec3(data=normals)
cfg.aspect_ratio = (1, 1)
geometry = ngl.Geometry(vertices=vertices_buffer)
if set_normals:
geometry.set_normals(normals_buffer)
prog = ngl.Program(vertex=cfg.get_vert("colored-normals"),
fragment=cfg.get_frag("colored-normals"))
prog.update_vert_out_vars(var_normal=ngl.IOVec3())
render = ngl.Render(geometry, prog)
else:
prog = ngl.Program(vertex=cfg.get_vert("color"),
fragment=cfg.get_frag("color"))
render = ngl.Render(geometry, prog)
render.update_frag_resources(
color=ngl.UniformVec3(value=COLORS.magenta),
opacity=ngl.UniformFloat(1))
if set_indices:
indices = array.array("H", list(range(3 * 6)))
indices_buffer = ngl.BufferUShort(data=indices)
geometry.set_indices(indices_buffer)
return ngl.Rotate(render, 45, axis=(1, 1, 1))
def _get_live_trf_spec(layout):
t0 = ngl.Identity()
t1 = ngl.Transform(t0)
t2 = ngl.Translate(t1)
t3 = ngl.Rotate(t2)
t4 = ngl.Scale(t3)
t5 = ngl.RotateQuat(t4)
return [
dict(
name='m4',
type='mat4',
category='single',
func=lambda data: ngl.UniformMat4(data, transform=t5),
livechange=(
lambda: t1.set_matrix( # trf_step=1
0.1,
0.2,
0.0,
0.0,
0.0,
0.3,
0.4,
0.0,
0.0,
0.0,
0.5,
0.0,
0.8,
0.7,
0.0,
0.6,
),
lambda: t2.set_vector(0.2, 0.7, -0.4), # trf_step=2
lambda: t3.set_angle(123.4), # trf_step=3
lambda: t4.set_factors(0.7, 1.4, 0.2), # trf_step=4
lambda: t5.set_quat(0, 0, -0.474, 0.880), # trf_step=5
lambda: t5.set_quat(0, 0, 0, 1),
lambda: t4.set_factors(1, 1, 1),
lambda: t3.set_angle(0),
lambda: t2.set_vector(0, 0, 0),
lambda: t1.set_matrix(
1.0,
0.0,
0.0,
0.0,
0.0,
1.0,
0.0,
0.0,
0.0,
0.0,
1.0,
0.0,
0.0,
0.0,
0.0,
1.0,
)),
),
]
def transform_rotate_anchor(cfg, angle=123.4, anchor=(0.15, 0.35, 0.7)):
cfg.aspect_ratio = (1, 1)
shape = _transform_shape(cfg)
return ngl.Rotate(shape, angle, anchor=anchor)
