def quaternion(cfg):
'''Animated quaternion used to rotate a plane'''
cfg.duration = 10.
step = cfg.duration / 5.
x = math.sqrt(0.5)
quat_animkf = [
ngl.AnimKeyFrameQuat(0 * step, (0, 0, 0, 1)),
ngl.AnimKeyFrameQuat(1 * step, (0, 0,-x, x)),
ngl.AnimKeyFrameQuat(2 * step, (0, 1, 0, 0)),
ngl.AnimKeyFrameQuat(3 * step, (1, 0, 0, 0)),
ngl.AnimKeyFrameQuat(4 * step, (x, 0, 0, x)),
ngl.AnimKeyFrameQuat(5 * step, (0, 0, 0, 1)),
]
quat = ngl.AnimatedQuat(quat_animkf, as_mat4=True)
q = ngl.Quad((-1, -1, 0), (2, 0, 0), (0, 2, 0))
m = ngl.Media(cfg.medias[0].filename)
t = ngl.Texture2D(data_src=m)
p = ngl.Program(vertex=cfg.get_vert('uniform-mat4'))
render = ngl.Render(q, p)
render.update_textures(tex0=t)
render.update_uniforms(transformation_matrix=quat)
camera = ngl.Camera(render)
camera.set_eye(0.0, 0.0, 4.0)
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 quaternion(cfg):
"""Animated quaternion used to rotate a plane"""
cfg.duration = 10.0
step = cfg.duration / 5.0
x = math.sqrt(0.5)
quat_animkf = [
ngl.AnimKeyFrameQuat(0 * step, (0, 0, 0, 1)),
ngl.AnimKeyFrameQuat(1 * step, (0, 0, -x, x)),
ngl.AnimKeyFrameQuat(2 * step, (0, 1, 0, 0)),
ngl.AnimKeyFrameQuat(3 * step, (1, 0, 0, 0)),
ngl.AnimKeyFrameQuat(4 * step, (x, 0, 0, x)),
ngl.AnimKeyFrameQuat(5 * step, (0, 0, 0, 1)),
]
quat = ngl.AnimatedQuat(quat_animkf, as_mat4=True)
q = ngl.Quad((-1, -1, 0), (2, 0, 0), (0, 2, 0))
m = ngl.Media(cfg.medias[0].filename)
t = ngl.Texture2D(data_src=m)
p = ngl.Program(vertex=cfg.get_vert("uniform-mat4"),
fragment=cfg.get_frag("texture"))
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.update_vert_resources(transformation_matrix=quat)
camera = ngl.Camera(render)
camera.set_eye(0.0, 0.0, 4.0)
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_rotate_quat_animated(cfg, quat0=(0, 0, -0.474, 0.880), quat1=(0, 0, 0, 0)):
cfg.aspect_ratio = (1, 1)
shape = _transform_shape(cfg)
anim = [
ngl.AnimKeyFrameQuat(0, quat0),
ngl.AnimKeyFrameQuat(cfg.duration / 2., quat1),
ngl.AnimKeyFrameQuat(cfg.duration, quat0),
]
return ngl.RotateQuat(shape, anim=ngl.AnimatedQuat(anim))
ngl.AnimKeyFrameFloat, data)),
animated_vec2=lambda data: ngl.AnimatedVec2(keyframes=_get_anim_kf(
ngl.AnimKeyFrameVec2, data)),
animated_vec3=lambda data: ngl.AnimatedVec3(keyframes=_get_anim_kf(
ngl.AnimKeyFrameVec3, data)),
animated_vec4=lambda data: ngl.AnimatedVec4(keyframes=_get_anim_kf(
ngl.AnimKeyFrameVec4, data)),
animated_buffer_float=lambda data: ngl.AnimatedBufferFloat(
keyframes=_get_anim_kf(ngl.AnimKeyFrameBuffer, data)),
animated_buffer_vec2=lambda data: ngl.AnimatedBufferVec2(
keyframes=_get_anim_kf(ngl.AnimKeyFrameBuffer, data)),
animated_buffer_vec3=lambda data: ngl.AnimatedBufferVec3(
keyframes=_get_anim_kf(ngl.AnimKeyFrameBuffer, data)),
animated_buffer_vec4=lambda data: ngl.AnimatedBufferVec4(
keyframes=_get_anim_kf(ngl.AnimKeyFrameBuffer, data)),
animated_quat_mat4=lambda data: ngl.AnimatedQuat(
keyframes=_get_anim_kf(ngl.AnimKeyFrameQuat, data), as_mat4=True),
animated_quat_vec4=lambda data: ngl.AnimatedQuat(
keyframes=_get_anim_kf(ngl.AnimKeyFrameQuat, data), as_mat4=False),
array_float=lambda data: ngl.BufferFloat(data=data),
array_int=lambda data: ngl.BufferInt(data=data),
array_ivec2=lambda data: ngl.BufferIVec2(data=data),
array_ivec3=lambda data: ngl.BufferIVec3(data=data),
array_ivec4=lambda data: ngl.BufferIVec4(data=data),
array_mat4=lambda data: ngl.BufferMat4(data=data),
array_vec2=lambda data: ngl.BufferVec2(data=data),
array_vec3=lambda data: ngl.BufferVec3(data=data),
array_vec4=lambda data: ngl.BufferVec4(data=data),
single_bool=lambda data: ngl.UniformBool(data),
single_float=lambda data: ngl.UniformFloat(data),
single_int=lambda data: ngl.UniformInt(data),
single_ivec2=lambda data: ngl.UniformIVec2(data),
