def test_bounding_box_5(self):
bbox1 = BBox(Point(0, -2, 0),
Point(1, -1, 1))
p1 = Point(-3,3,0.5)
bbox2 = union(bbox1, p1)
self.assertEqual(bbox2.p_min, Point(-3, -2, 0))
self.assertEqual(bbox2.p_max, Point(1, 3, 1))
def test_bounding_box_6(self):
bbox1 = BBox(Point(0, -2, 0),
Point(1, -1, 1))
bbox2 = BBox(Point(-2, 0, -2),
Point(-1, 1, -1))
bbox3 = union(bbox1, bbox2)
self.assertEqual(bbox3.p_min, Point(-2, -2, -2))
self.assertEqual(bbox3.p_max, Point(1, 1, 1))
def __init__(self, accel, lights=None, volume_region=None):
"""Default constructor for Scene."""
# Primitive
self.aggregate = accel
# array of Light
if lights:
self.lights = lights
else:
self.lights = []
# VolumeRegion
self.volume_region = volume_region
# initialize bounding box
self.bound = self.aggregate.world_bound()
if self.volume_region:
self.bound = union(self.bound, self.volume_region.world_bound())
def __init__(self, accel, lights=None, volume_region=None):
"""Default constructor for Scene."""
# Primitive
self.aggregate = accel
# array of Light
if lights:
self.lights = lights
else:
self.lights = []
# VolumeRegion
self.volume_region = volume_region
# initialize bounding box
self.bound = self.aggregate.world_bound()
if self.volume_region:
self.bound = union(self.bound, self.volume_region.world_bound())
def __call__(self, elt):
"""Overload the operator().
Supported operations:
* Transform(Point)
* Transform(Vector)
* Transform(Normal)
* Transform(Ray)
* Transform(RayDifferential)
* Transform(BBox)
"""
if isinstance(elt, Point):
x = elt.x
y = elt.y
z = elt.z
xp = self.m.m[0][0] * x + self.m.m[0][1] * y + self.m.m[0][
2] * z + self.m.m[0][3]
yp = self.m.m[1][0] * x + self.m.m[1][1] * y + self.m.m[1][
2] * z + self.m.m[1][3]
zp = self.m.m[2][0] * x + self.m.m[2][1] * y + self.m.m[2][
2] * z + self.m.m[2][3]
wp = self.m.m[3][0] * x + self.m.m[3][1] * y + self.m.m[3][
2] * z + self.m.m[3][3]
if wp == 1.0:
return Point(xp, yp, zp)
else:
return Point(xp, yp, zp) / wp
elif isinstance(elt, Vector):
x = elt.x
y = elt.y
z = elt.z
xp = self.m.m[0][0] * x + self.m.m[0][1] * y + self.m.m[0][2] * z
yp = self.m.m[1][0] * x + self.m.m[1][1] * y + self.m.m[1][2] * z
zp = self.m.m[2][0] * x + self.m.m[2][1] * y + self.m.m[2][2] * z
return Vector(xp, yp, zp)
elif isinstance(elt, Normal):
x = elt.x
y = elt.y
z = elt.z
return Normal(
self.m_inv.m[0][0] * x + self.m_inv.m[1][0] * y +
self.m_inv.m[2][0] * z, self.m_inv.m[0][1] * x +
self.m_inv.m[1][1] * y + self.m_inv.m[2][1] * z,
self.m_inv.m[0][2] * x + self.m_inv.m[1][2] * y +
self.m_inv.m[2][2] * z)
elif isinstance(elt, RayDifferential):
ray = RayDifferential.from_ray_differential(elt)
ray.o = self(ray.o)
ray.d = self(ray.d)
ray.rx_origin = self(ray.rx_origin)
ray.ry_origin = self(ray.ry_origin)
ray.rx_direction = self(ray.rx_direction)
ray.ry_direction = self(ray.ry_direction)
return ray
elif isinstance(elt, Ray):
ray = Ray.from_ray(elt)
ray.o = self(ray.o)
ray.d = self(ray.d)
return ray
elif isinstance(elt, BBox):
ret = BBox(self(Point(elt.p_min.x, elt.p_min.y, elt.p_min.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_min.y,
elt.p_min.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_max.y,
elt.p_min.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_min.y,
elt.p_max.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_max.y,
elt.p_max.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_max.y,
elt.p_min.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_min.y,
elt.p_max.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_max.y,
elt.p_max.z)))
return ret
def __init__(self, primitives, refine_immediately):
"""Default constructor for GridAccel."""
# initialize self.primitives with primitives for grid
if refine_immediately:
self.primitives = []
for primitive in primitives:
primitive.fully_refine(self.primitives)
else:
self.primitives = list(primitives)
# compute bounds and choose grid resolution
self.bounds = BBox()
for primitive in self.primitives:
self.bounds = union(self.bounds, primitive.world_bound())
delta = self.bounds.p_max - self.bounds.p_min
# find voxels_per_unit_dist for grid
max_axis = self.bounds.maximum_extent()
inv_max_width = 1.0 / delta[max_axis]
cube_root = 3.0 * pow(len(self.primitives), 1.0 / 3.0)
voxels_per_unit_dist = cube_root * inv_max_width
self.n_voxels = []
for axis in range(3):
self.n_voxels.append(
clamp(round_to_int(delta[axis] * voxels_per_unit_dist), 1, 64))
# compute voxel widths and allocate voxels
self.width = Vector()
self.inv_width = Vector()
for axis in range(3):
self.width[axis] = delta[axis] / self.n_voxels[axis]
if self.width[axis] == 0.0:
self.inv_width[axis] = 0.0
else:
self.inv_width[axis] = 1.0 / self.width[axis]
nv = self.n_voxels[0] * self.n_voxels[1] * self.n_voxels[2]
# array of voxels, initialized at None
self.voxels = [None] * nv
# add primitives to grid voxels
for primitive in self.primitives:
# find voxel extent of primitive
primitive_bound = primitive.world_bound()
v_min = []
v_max = []
for axis in range(3):
v_min.append(self._pos_to_voxel(primitive_bound.p_min, axis))
v_max.append(self._pos_to_voxel(primitive_bound.p_max, axis))
# add primitive to overlapping voxels
for z in range(v_min[2], v_max[2] + 1):
for y in range(v_min[1], v_max[1] + 1):
for x in range(v_min[0], v_max[0] + 1):
index = self._offset(x, y, z)
if self.voxels[index] is None:
self.voxels[index] = Voxel(primitive)
else:
self.voxels[index].add_primitive(primitive)
# create reader-writer mutex for grid
self.rw_lock = DummyRWLock()
def __call__(self, elt):
"""Overload the operator().
Supported operations:
* Transform(Point)
* Transform(Vector)
* Transform(Normal)
* Transform(Ray)
* Transform(RayDifferential)
* Transform(BBox)
"""
if isinstance(elt, Point):
x = elt.x
y = elt.y
z = elt.z
xp = self.m.m[0][0]*x + self.m.m[0][1]*y + self.m.m[0][2]*z + self.m.m[0][3]
yp = self.m.m[1][0]*x + self.m.m[1][1]*y + self.m.m[1][2]*z + self.m.m[1][3]
zp = self.m.m[2][0]*x + self.m.m[2][1]*y + self.m.m[2][2]*z + self.m.m[2][3]
wp = self.m.m[3][0]*x + self.m.m[3][1]*y + self.m.m[3][2]*z + self.m.m[3][3]
if wp == 1.0:
return Point(xp, yp, zp)
else:
return Point(xp, yp, zp)/wp
elif isinstance(elt, Vector):
x = elt.x
y = elt.y
z = elt.z
xp = self.m.m[0][0]*x + self.m.m[0][1]*y + self.m.m[0][2]*z
yp = self.m.m[1][0]*x + self.m.m[1][1]*y + self.m.m[1][2]*z
zp = self.m.m[2][0]*x + self.m.m[2][1]*y + self.m.m[2][2]*z
return Vector(xp, yp, zp)
elif isinstance(elt, Normal):
x = elt.x
y = elt.y
z = elt.z
return Normal(self.m_inv.m[0][0]*x + self.m_inv.m[1][0]*y + self.m_inv.m[2][0]*z,
self.m_inv.m[0][1]*x + self.m_inv.m[1][1]*y + self.m_inv.m[2][1]*z,
self.m_inv.m[0][2]*x + self.m_inv.m[1][2]*y + self.m_inv.m[2][2]*z)
elif isinstance(elt, RayDifferential):
ray = RayDifferential.from_ray_differential(elt)
ray.o = self(ray.o)
ray.d = self(ray.d)
ray.rx_origin = self(ray.rx_origin)
ray.ry_origin = self(ray.ry_origin)
ray.rx_direction = self(ray.rx_direction)
ray.ry_direction = self(ray.ry_direction)
return ray
elif isinstance(elt, Ray):
ray = Ray.from_ray(elt)
ray.o = self(ray.o)
ray.d = self(ray.d)
return ray
elif isinstance(elt, BBox):
ret = BBox(self(Point(elt.p_min.x, elt.p_min.y, elt.p_min.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_min.y, elt.p_min.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_max.y, elt.p_min.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_min.y, elt.p_max.z)))
ret = union(ret, self(Point(elt.p_min.x, elt.p_max.y, elt.p_max.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_max.y, elt.p_min.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_min.y, elt.p_max.z)))
ret = union(ret, self(Point(elt.p_max.x, elt.p_max.y, elt.p_max.z)))
return ret
def __init__(self, primitives, refine_immediately):
"""Default constructor for GridAccel."""
# initialize self.primitives with primitives for grid
if refine_immediately:
self.primitives = []
for primitive in primitives:
primitive.fully_refine(self.primitives)
else:
self.primitives = list(primitives)
# compute bounds and choose grid resolution
self.bounds = BBox()
for primitive in self.primitives:
self.bounds = union(self.bounds, primitive.world_bound())
delta = self.bounds.p_max - self.bounds.p_min
# find voxels_per_unit_dist for grid
max_axis = self.bounds.maximum_extent()
inv_max_width = 1.0 / delta[max_axis]
cube_root = 3.0 * pow(len(self.primitives), 1.0/3.0)
voxels_per_unit_dist = cube_root * inv_max_width
self.n_voxels = []
for axis in range(3):
self.n_voxels.append(clamp(
round_to_int(delta[axis] * voxels_per_unit_dist), 1, 64))
# compute voxel widths and allocate voxels
self.width = Vector()
self.inv_width = Vector()
for axis in range(3):
self.width[axis] = delta[axis] / self.n_voxels[axis]
if self.width[axis] == 0.0:
self.inv_width[axis] = 0.0
else:
self.inv_width[axis] = 1.0 / self.width[axis]
nv = self.n_voxels[0] * self.n_voxels[1] * self.n_voxels[2]
# array of voxels, initialized at None
self.voxels = [None] * nv
# add primitives to grid voxels
for primitive in self.primitives:
# find voxel extent of primitive
primitive_bound = primitive.world_bound()
v_min = []
v_max = []
for axis in range(3):
v_min.append(self._pos_to_voxel(primitive_bound.p_min, axis))
v_max.append(self._pos_to_voxel(primitive_bound.p_max, axis))
# add primitive to overlapping voxels
for z in range(v_min[2], v_max[2]+1):
for y in range(v_min[1], v_max[1]+1):
for x in range(v_min[0], v_max[0]+1):
index = self._offset(x, y, z)
if self.voxels[index] is None:
self.voxels[index] = Voxel(primitive)
else:
self.voxels[index].add_primitive(primitive)
# create reader-writer mutex for grid
self.rw_lock = DummyRWLock()
def test_bounding_box_6(self):
bbox1 = BBox(Point(0, -2, 0), Point(1, -1, 1))
bbox2 = BBox(Point(-2, 0, -2), Point(-1, 1, -1))
bbox3 = union(bbox1, bbox2)
self.assertEqual(bbox3.p_min, Point(-2, -2, -2))
self.assertEqual(bbox3.p_max, Point(1, 1, 1))
def test_bounding_box_5(self):
bbox1 = BBox(Point(0, -2, 0), Point(1, -1, 1))
p1 = Point(-3, 3, 0.5)
bbox2 = union(bbox1, p1)
self.assertEqual(bbox2.p_min, Point(-3, -2, 0))
self.assertEqual(bbox2.p_max, Point(1, 3, 1))