def applyMatrix(self, matrix4):
normal_matrix = getNormalMatrix(matrix4)
verts = self.vertices
for i in range(len(verts)):
vertex = verts[i]
verts[i] = applyMatrix4(matrix4, vertex)
faces = self.faces
for i in range(len(faces)):
face = faces[i]
normal = normalizeV3(applyMatrix3(normal_matrix, face.normal))
faces[i] = Face(normal, face.v1, face.v2, face.v3)
def applyMatrix(self, matrix4):
normal_matrix = getNormalMatrix( matrix4 );
verts = self.vertices
for i in range(len(verts)):
vertex = verts[i]
verts[i] = applyMatrix4(matrix4, vertex)
faces = self.faces
for i in range(len(faces)):
face = faces[i]
normal = normalizeV3(applyMatrix3(normal_matrix, face.normal))
faces[i] = Face(normal, face.v1, face.v2, face.v3)
def __init__(self,
name,
radius,
length,
height_segments,
twist_per_segment=None,
radial_segments=64):
"""
Order of vertices added changes normals calculation
so whether cylinder is in the y or z direction changes
things so that's why some code is commented out. y used
to be the default
"""
super(HalfCylinder, self).__init__(name)
self.radius = radius
self.length = length
self.height_segments = height_segments
self.radial_segments = radial_segments
# local vars
segment_length = length / height_segments
half_length = length / 2.
vertices = []
uvs = []
for y in range(height_segments + 1):
vertices_row = []
uvs_row = []
v = y / (height_segments)
for x in range(radial_segments + 1):
u = x / (2 * radial_segments)
vertex = Vector3(radius * math.sin(u * math.pi * 2),
radius * math.cos(u * math.pi * 2),
v * length - half_length)
# vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
# - v * length + half_length,
# radius * math.cos( u * math.pi * 2 )
# )
self.vertices.append(vertex)
vertices_row.append(len(self.vertices) - 1)
uvs_row.append(Vector2(u, 1 - v))
# end for
vertices.append(vertices_row)
uvs.append(uvs_row)
# end for
for x in range(radial_segments):
na = Vector3(*self.vertices[vertices[0][x]])
nb = Vector3(*self.vertices[vertices[0][x + 1]])
na = normalizeV3(na)
nb = normalizeV3(nb)
for y in range(height_segments):
v1 = vertices[y][x]
v2 = vertices[y + 1][x]
v3 = vertices[y + 1][x + 1]
v4 = vertices[y][x + 1]
n1 = Vector3(*na)
n2 = Vector3(*na)
n3 = Vector3(*nb)
n4 = Vector3(*nb)
uv1 = Vector2(*uvs[y][x])
uv2 = Vector2(*uvs[y + 1][x])
uv3 = Vector2(*uvs[y + 1][x + 1])
uv4 = Vector2(*uvs[y][x + 1])
# self.addFace(v1, v2, v4)
# self.addFace(v1, v2, v4, vnormals=[n1, n2, n4])
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv4 ] )
self.addFace(v1, v2, v3)
self.face_vertex_uvs[0].append([uv1, uv4, uv2])
# self.addFace(v2, v3, v4)
# self.addFace(v2, v3, v4, vnormals=[Vector3(*n2), n3, Vector3(*n4)])
# self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv2), uv3, Vector2(*uv4) ] );
self.addFace(v3, v4, v1)
self.face_vertex_uvs[0].append(
[Vector2(*uv4), uv3, Vector2(*uv2)])
# end for
# end for
# TOP CAP
self.vertices.append(Vector3(0, 0, -half_length))
for x in range(radial_segments):
v1 = vertices[0][x]
v2 = vertices[0][x + 1]
v3 = len(self.vertices) - 1
n1 = Vector3(0, 0, 1.)
n2 = Vector3(0, 0, 1.)
n3 = Vector3(0, 0, 1.)
uv1 = Vector2(*uvs[0][x])
uv2 = Vector2(*uvs[0][x + 1])
uv3 = Vector2(uv2.x, 0)
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v2, v3, normal=n1)
self.face_vertex_uvs[0].append([uv1, uv3, uv2])
# end for
# BOTTOM CAP
self.vertices.append(Vector3(0, 0, half_length))
y = height_segments
for x in range(radial_segments):
v1 = vertices[y][x + 1]
v2 = vertices[y][x]
v3 = len(self.vertices) - 1
n1 = Vector3(0, 0, -1.)
n2 = Vector3(0, 0, -1.)
n3 = Vector3(0, 0, -1.)
uv1 = Vector2(*uvs[y][x + 1])
uv2 = Vector2(*uvs[y][x])
uv3 = Vector2(uv2.x, 1)
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v2, v3, normal=n1)
self.face_vertex_uvs[0].append([uv1, uv3, uv2])
# end for
# SIDE CAPS
for y in range(height_segments):
v1 = vertices[y][0]
v2 = vertices[y + 1][0]
v3 = vertices[y + 1][-1]
v4 = vertices[y][-1]
n1 = Vector3(-1., 0, 0)
uv1 = Vector2(*uvs[y][0])
uv2 = Vector2(*uvs[y + 1][0])
uv3 = Vector2(*uvs[y + 1][-1])
uv4 = Vector2(*uvs[y][-1])
# self.addFace(v1, v4, v2, normal=n1)
self.addFace(v1, v4, v3, normal=n1)
self.face_vertex_uvs[0].append([uv1, uv4, uv2])
# self.addFace(v4, v3, v2, normal=Vector3(*n1))
self.addFace(v3, v2, v1, normal=Vector3(*n1))
self.face_vertex_uvs[0].append([Vector2(*uv4), uv3,
Vector2(*uv2)])
# end for
# apply twist
if twist_per_segment is not None:
# twist all vertices
delta_ang = twist_per_segment * math.pi / 180.
i = 0
for y in range(height_segments + 1):
m4 = makeRotationZ(y * delta_ang)
for x in range(radial_segments + 1):
vert = self.vertices[i]
# print(vert.z)
self.vertices[i] = applyMatrix4(m4, vert)
i += 1
# recompute face normals
self.computeFaceNormals()
def __init__(self, name, radius, length, height_segments,
twist_per_segment=None, radial_segments=64):
"""
Order of vertices added changes normals calculation
so whether cylinder is in the y or z direction changes
things so that's why some code is commented out. y used
to be the default
"""
super(HalfCylinder, self).__init__(name)
self.radius = radius
self.length = length
self.height_segments = height_segments
self.radial_segments = radial_segments
# local vars
segment_length = length/height_segments
half_length = length / 2.
vertices = []
uvs = []
for y in range(height_segments+1):
vertices_row = []
uvs_row = []
v = y / (height_segments)
for x in range(radial_segments+1):
u = x / (2*radial_segments)
vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
radius * math.cos( u * math.pi * 2 ),
v * length - half_length
)
# vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
# - v * length + half_length,
# radius * math.cos( u * math.pi * 2 )
# )
self.vertices.append( vertex )
vertices_row.append( len(self.vertices) - 1 )
uvs_row.append( Vector2( u, 1 - v ) )
# end for
vertices.append( vertices_row )
uvs.append( uvs_row )
# end for
for x in range(radial_segments):
na = Vector3(*self.vertices[ vertices[ 0 ][ x ] ])
nb = Vector3(*self.vertices[ vertices[ 0 ][ x + 1 ] ])
na = normalizeV3(na)
nb = normalizeV3(nb)
for y in range(height_segments):
v1 = vertices[ y ][ x ]
v2 = vertices[ y + 1 ][ x ]
v3 = vertices[ y + 1 ][ x + 1 ]
v4 = vertices[ y ][ x + 1 ]
n1 = Vector3(*na)
n2 = Vector3(*na)
n3 = Vector3(*nb)
n4 = Vector3(*nb)
uv1 = Vector2(*uvs[ y ][ x ])
uv2 = Vector2(*uvs[ y + 1 ][ x ])
uv3 = Vector2(*uvs[ y + 1 ][ x + 1 ])
uv4 = Vector2(*uvs[ y ][ x + 1 ])
# self.addFace(v1, v2, v4)
# self.addFace(v1, v2, v4, vnormals=[n1, n2, n4])
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv4 ] )
self.addFace(v1, v2, v3)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv4, uv2 ] )
# self.addFace(v2, v3, v4)
# self.addFace(v2, v3, v4, vnormals=[Vector3(*n2), n3, Vector3(*n4)])
# self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv2), uv3, Vector2(*uv4) ] );
self.addFace(v3, v4, v1)
self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv4), uv3, Vector2(*uv2) ] );
# end for
# end for
# TOP CAP
self.vertices.append( Vector3( 0, 0, -half_length) )
for x in range(radial_segments):
v1 = vertices[ 0 ][ x ]
v2 = vertices[ 0 ][ x + 1 ]
v3 = len(self.vertices) - 1
n1 = Vector3( 0, 0, 1. )
n2 = Vector3( 0, 0, 1.)
n3 = Vector3( 0, 0, 1. )
uv1 = Vector2(*uvs[ 0 ][ x ])
uv2 = Vector2(*uvs[ 0 ][ x + 1 ])
uv3 = Vector2( uv2.x, 0 )
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v2, v3, normal=n1)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv3, uv2 ] )
# end for
# BOTTOM CAP
self.vertices.append( Vector3( 0, 0 , half_length) )
y = height_segments
for x in range(radial_segments):
v1 = vertices[ y ][ x + 1]
v2 = vertices[ y ][ x ]
v3 = len(self.vertices) - 1
n1 = Vector3( 0, 0, -1.)
n2 = Vector3( 0, 0, -1.)
n3 = Vector3( 0, 0, -1.)
uv1 = Vector2(*uvs[ y ][ x + 1 ])
uv2 = Vector2(*uvs[ y ][ x ])
uv3 = Vector2( uv2.x, 1 )
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v2, v3, normal=n1)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv3, uv2 ] )
# end for
# SIDE CAPS
for y in range(height_segments):
v1 = vertices[ y ][ 0 ]
v2 = vertices[ y + 1 ][ 0 ]
v3 = vertices[ y + 1 ][ -1 ]
v4 = vertices[ y ][ -1 ]
n1 = Vector3( -1., 0, 0)
uv1 = Vector2(*uvs[ y ][ 0 ])
uv2 = Vector2(*uvs[ y + 1 ][ 0 ])
uv3 = Vector2(*uvs[ y + 1 ][ -1 ])
uv4 = Vector2(*uvs[ y ][ -1 ])
# self.addFace(v1, v4, v2, normal=n1)
self.addFace(v1, v4, v3, normal=n1)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv4, uv2 ] )
# self.addFace(v4, v3, v2, normal=Vector3(*n1))
self.addFace(v3, v2, v1, normal=Vector3(*n1))
self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv4), uv3, Vector2(*uv2) ] );
# end for
# apply twist
if twist_per_segment is not None:
# twist all vertices
delta_ang = twist_per_segment*math.pi/180.
i = 0
for y in range(height_segments+1):
m4 = makeRotationZ(y*delta_ang)
for x in range(radial_segments+1):
vert = self.vertices[i]
# print(vert.z)
self.vertices[i] = applyMatrix4(m4, vert)
i += 1
# recompute face normals
self.computeFaceNormals()
def __init__(self, name, radius, length, radial_segments=32):
"""
Order of vertices added changes normals calculation
so whether cylinder is in the y or z direction changes
things so that's why some code is commented out. y used
to be the default
"""
super(Cylinder, self).__init__(name)
self.radius = radius
self.length = length
# local vars
half_length = length / 2.
vertices = []
uvs = []
for y in range(2):
vertices_row = []
uvs_row = []
v = y
for x in range(radial_segments+1):
u = x / radial_segments
vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
radius * math.cos( u * math.pi * 2 ),
- v * length + half_length
)
# vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
# - v * length + half_length,
# radius * math.cos( u * math.pi * 2 )
# )
self.vertices.append( vertex )
vertices_row.append( len(self.vertices) - 1 )
uvs_row.append( Vector2( u, 1 - v ) )
# end for
vertices.append( vertices_row )
uvs.append( uvs_row )
# end for
for x in range(radial_segments):
na = Vector3(*self.vertices[ vertices[ 0 ][ x ] ])
nb = Vector3(*self.vertices[ vertices[ 0 ][ x + 1 ] ])
na = normalizeV3(na)
nb = normalizeV3(nb)
y = 0
v1 = vertices[ y ][ x ]
v2 = vertices[ y + 1 ][ x ]
v3 = vertices[ y + 1 ][ x + 1 ]
v4 = vertices[ y ][ x + 1 ]
n1 = Vector3(*na)
n2 = Vector3(*na)
n3 = Vector3(*nb)
n4 = Vector3(*nb)
uv1 = Vector2(*uvs[ y ][ x ])
uv2 = Vector2(*uvs[ y + 1 ][ x ])
uv3 = Vector2(*uvs[ y + 1 ][ x + 1 ])
uv4 = Vector2(*uvs[ y ][ x + 1 ])
# self.addFace(v1, v2, v4)
# self.addFace(v1, v2, v4, vnormals=[n1, n2, n4])
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv4 ] )
self.addFace(v1, v4, v2)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv4, uv2 ] )
# self.addFace(v2, v3, v4)
# self.addFace(v2, v3, v4, vnormals=[Vector3(*n2), n3, Vector3(*n4)])
# self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv2), uv3, Vector2(*uv4) ] );
self.addFace(v4, v3, v2)
self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv4), uv3, Vector2(*uv2) ] );
# end for
# TOP CAP
self.vertices.append( Vector3( 0, 0, half_length) )
for x in range(radial_segments):
v1 = vertices[ 0 ][ x ]
v2 = vertices[ 0 ][ x + 1 ]
v3 = len(self.vertices) - 1
n1 = Vector3( 0, 0, 1. )
n2 = Vector3( 0, 0, 1.)
n3 = Vector3( 0, 0, 1. )
uv1 = Vector2(*uvs[ 0 ][ x ])
uv2 = Vector2(*uvs[ 0 ][ x + 1 ])
uv3 = Vector2( uv2.x, 0 )
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v3, v2, normal=n1)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv3, uv2 ] )
# end for
# BOTTOM CAP
self.vertices.append( Vector3( 0, 0 , -half_length) )
y = 1
for x in range(radial_segments):
v1 = vertices[ y ][ x + 1]
v2 = vertices[ y ][ x ]
v3 = len(self.vertices) - 1
n1 = Vector3( 0, 0, -1.)
n2 = Vector3( 0, 0, -1.)
n3 = Vector3( 0, 0, -1.)
uv1 = Vector2(*uvs[ y ][ x + 1 ])
uv2 = Vector2(*uvs[ y ][ x ])
uv3 = Vector2( uv2.x, 1 )
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v3, v2, normal=n1)
self.face_vertex_uvs[ 0 ].append( [ uv1, uv3, uv2 ] )
def __init__(self, name, radius, length, radial_segments=32):
"""
Order of vertices added changes normals calculation
so whether cylinder is in the y or z direction changes
things so that's why some code is commented out. y used
to be the default
"""
super(Cylinder, self).__init__(name)
self.radius = radius
self.length = length
# local vars
half_length = length / 2.
vertices = []
uvs = []
for y in range(2):
vertices_row = []
uvs_row = []
v = y
for x in range(radial_segments + 1):
u = x / radial_segments
vertex = Vector3(radius * math.sin(u * math.pi * 2),
radius * math.cos(u * math.pi * 2),
-v * length + half_length)
# vertex = Vector3( radius * math.sin( u * math.pi * 2 ),
# - v * length + half_length,
# radius * math.cos( u * math.pi * 2 )
# )
self.vertices.append(vertex)
vertices_row.append(len(self.vertices) - 1)
uvs_row.append(Vector2(u, 1 - v))
# end for
vertices.append(vertices_row)
uvs.append(uvs_row)
# end for
for x in range(radial_segments):
na = Vector3(*self.vertices[vertices[0][x]])
nb = Vector3(*self.vertices[vertices[0][x + 1]])
na = normalizeV3(na)
nb = normalizeV3(nb)
y = 0
v1 = vertices[y][x]
v2 = vertices[y + 1][x]
v3 = vertices[y + 1][x + 1]
v4 = vertices[y][x + 1]
n1 = Vector3(*na)
n2 = Vector3(*na)
n3 = Vector3(*nb)
n4 = Vector3(*nb)
uv1 = Vector2(*uvs[y][x])
uv2 = Vector2(*uvs[y + 1][x])
uv3 = Vector2(*uvs[y + 1][x + 1])
uv4 = Vector2(*uvs[y][x + 1])
# self.addFace(v1, v2, v4)
# self.addFace(v1, v2, v4, vnormals=[n1, n2, n4])
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv4 ] )
self.addFace(v1, v4, v2)
self.face_vertex_uvs[0].append([uv1, uv4, uv2])
# self.addFace(v2, v3, v4)
# self.addFace(v2, v3, v4, vnormals=[Vector3(*n2), n3, Vector3(*n4)])
# self.face_vertex_uvs[ 0 ].append( [ Vector2(*uv2), uv3, Vector2(*uv4) ] );
self.addFace(v4, v3, v2)
self.face_vertex_uvs[0].append([Vector2(*uv4), uv3,
Vector2(*uv2)])
# end for
# TOP CAP
self.vertices.append(Vector3(0, 0, half_length))
for x in range(radial_segments):
v1 = vertices[0][x]
v2 = vertices[0][x + 1]
v3 = len(self.vertices) - 1
n1 = Vector3(0, 0, 1.)
n2 = Vector3(0, 0, 1.)
n3 = Vector3(0, 0, 1.)
uv1 = Vector2(*uvs[0][x])
uv2 = Vector2(*uvs[0][x + 1])
uv3 = Vector2(uv2.x, 0)
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v3, v2, normal=n1)
self.face_vertex_uvs[0].append([uv1, uv3, uv2])
# end for
# BOTTOM CAP
self.vertices.append(Vector3(0, 0, -half_length))
y = 1
for x in range(radial_segments):
v1 = vertices[y][x + 1]
v2 = vertices[y][x]
v3 = len(self.vertices) - 1
n1 = Vector3(0, 0, -1.)
n2 = Vector3(0, 0, -1.)
n3 = Vector3(0, 0, -1.)
uv1 = Vector2(*uvs[y][x + 1])
uv2 = Vector2(*uvs[y][x])
uv3 = Vector2(uv2.x, 1)
# self.addFace(v1, v2, v3, normal=n1)
# self.face_vertex_uvs[ 0 ].append( [ uv1, uv2, uv3 ] )
self.addFace(v1, v3, v2, normal=n1)
self.face_vertex_uvs[0].append([uv1, uv3, uv2])
