def CreateVectorVolume(vectorValue):
"""
Creates a VolumeRef defined as a vector volume, with a cube of 20 cm filled with the vector value passed.
:param vectorValue: The vector value to set.
:type vectorValue: maxon.Vector32
:return: The created Vector volume with the value defined inside.
:rtype: maxon.frameworks.volume.VolumeRef
"""
# Creates volume
volumeRef = maxon.frameworks.volume.VolumeToolsInterface.CreateNewVector32Volume(
maxon.Vector32(0.0))
if volumeRef is None:
raise MemoryError("Failed to create a float32 volume.")
# Creates accessor
access = maxon.frameworks.volume.GridAccessorInterface.Create(
maxon.Vector32)
if access is None:
raise RuntimeError("Failed to retrieve the grid accessor.")
# Initializes the grid for write access
access.InitWithWriteAccess(volumeRef)
# Sets values
size = 20
for x in range(size):
for y in range(size):
for z in range(size):
pos = maxon.IntVector32(x, y, z)
access.SetValue(pos, vectorValue)
return volumeRef
def CreateVectorVolume(vectorValue):
"""Creates a VolumeRef defined as a vector volume, with a cube of 100 cm (10* 10) filled with the vector passed.
Args:
vectorValue (maxon.Vector32): The vector value to set.
Returns:
maxon.frameworks.volume.VolumeRef: The created Vector volume with the value defined inside.
"""
# Creates volume
volumeRef = maxon.frameworks.volume.VolumeToolsInterface.CreateNewVector32Volume(
maxon.Vector32(0.0))
if volumeRef is None:
raise MemoryError("Failed to create a float32 volume.")
# Creates accessor
access = maxon.frameworks.volume.GridAccessorInterface.Create(
maxon.Vector32)
if access is None:
raise RuntimeError("Failed to retrieve the grid accessor.")
# Initializes the grid for write access
access.InitWithWriteAccess(volumeRef)
# Sets values
size = 10
step = 10.0
for x in range(size):
for y in range(size):
for z in range(size):
pos = maxon.IntVector32(x * step, y * step, z * step)
access.SetValue(pos, vectorValue)
return volumeRef
def main():
# Creates VolumeObject
volumeObj = c4d.BaseObject(c4d.Ovolume)
if volumeObj is None:
raise MemoryError("Failed to create a volume object.")
# Inserts the volume Object within the scene
doc.InsertObject(volumeObj, None, None)
# Creates volume
volume = maxon.frameworks.volume.VolumeToolsInterface.CreateNewFloat32Volume(
0.0)
if volume is None:
raise MemoryError("Failed to create a float32 volume.")
volume.SetGridClass(c4d.GRIDCLASS_FOG)
volume.SetGridName("Example Grid")
# Defines the initial matrix of the grid
scaleMatrix = maxon.Matrix()
volume.SetGridTransform(scaleMatrix)
# Creates accessor
access = maxon.frameworks.volume.GridAccessorInterface.Create(
maxon.Float32)
if access is None:
raise RuntimeError("Failed to retrieve the grid accessor.")
# Initializes the grid for write access, changed with R21
initMethod = access.Init if c4d.GetC4DVersion(
) < 21000 else access.InitWithWriteAccess
initMethod(volume)
# Sets values in the shape of a helix
offset = 0.0
radius = 100.0
height = 500.0
step = 50.0
stepSize = height / step
while offset < step:
sin, cos = c4d.utils.SinCos(offset)
pos = maxon.IntVector32()
pos.x = maxon.Int32(sin * radius)
pos.y = maxon.Int32(cos * radius)
pos.z = maxon.Int32(offset * stepSize)
# Sets value
access.SetValue(pos, 10.0)
offset = offset + 0.1
# Inserts volume in the VolumeObject
volumeObj.SetVolume(volume)
# Pushes an update event to Cinema 4D
c4d.EventAdd()