def ExportMesh(scene, sceneNode, blenderScene, blenderObjectMesh):
'''convert a blender mesh to an alchemedia node'''
# get the blender mesh from teh object
blenderMesh = blenderObjectMesh.data
# create the mesh node
meshNode = scene.CreateMeshNode(sceneNode)
meshInfo = pyScene.pyMesh(scene, meshNode)
meshInfo.SetName(blenderObjectMesh.getName())
# add the mesh materials
hasMaterial = False
materialMap = [
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
]
materials = blenderMesh.getMaterials(1)
for i, material in enumerate(materials):
if material != None:
hasMaterial = True
materialMap[i] = i
materialNode = scene.CreateMaterialNode(meshNode, i)
materialInfo = pyScene.pyMaterial(scene, materialNode)
# export any texture
for texture in material.getTextures():
if texture and texture.tex.type == Blender.Texture.Types.IMAGE:
image = texture.tex.image
if image != None:
# create a texture and attache to the material
name = image.getName()
textureNode = scene.CreateTextureNode(name)
scene.AddReference(materialNode, textureNode)
# link the texture ID to and the materail
textureInfo = pyScene.pyTexture(scene, textureNode)
materialInfo.SetAmbientTextId(textureInfo.GetId())
materialInfo.SetDiffuseTextId(textureInfo.GetId())
# if the mesh do not have material add a default material
if hasMaterial == False:
materialMap[0] = 0
materialNode = scene.CreateMaterialNode(meshNode, 0)
# create the vertex List and face arrays
faceCount = len(blenderMesh.faces)
vertexCount = len(blenderMesh.verts)
faceIndexCountArray = pyScene.intArray(faceCount)
vertexArray = pyScene.doubleArray(vertexCount * 3)
faceMaterialIndexArray = pyScene.intArray(faceCount)
vertexIndexArray = pyScene.intArray(faceCount * 4)
normalArray = pyScene.doubleArray(faceCount * 4 * 3)
uvArray = pyScene.doubleArray(faceCount * 4 * 2)
# copy vertex points from the vertex list
for i, v in enumerate(blenderMesh.verts):
vertexArray[i * 3 + 0] = v.co.x
vertexArray[i * 3 + 1] = v.co.y
vertexArray[i * 3 + 2] = v.co.z
# copy face data from the face list
index = 0
if blenderMesh.hasFaceUV() == True:
# mesh with uv mapping
for i, face in enumerate(blenderMesh.faces):
pointCount = len(face.v)
faceMaterialIndexArray[i] = face.mat
faceIndexCountArray[i] = pointCount
for j, point in enumerate(face):
vertexIndexArray[index + j] = point.index
normalIndex = (index + j) * 3
normalArray[normalIndex + 0] = point.no.x
normalArray[normalIndex + 1] = point.no.y
normalArray[normalIndex + 2] = point.no.z
uvIndex = (index + j) * 2
uvArray[uvIndex + 0] = face.uv[j][0]
uvArray[uvIndex + 1] = face.uv[j][1]
index = index + pointCount
else:
# mesh have no uv mapping
for i, face in enumerate(blenderMesh.faces):
pointCount = len(face.v)
faceMaterialIndexArray[i] = face.mat
faceIndexCountArray[i] = pointCount
for j, point in enumerate(face):
vertexIndexArray[index + j] = point.index
normalIndex = (index + j) * 3
normalArray[normalIndex + 0] = point.no.x
normalArray[normalIndex + 1] = point.no.y
normalArray[normalIndex + 2] = point.no.z
uvIndex = (index + j) * 2
uvArray[uvIndex + 0] = 0
uvArray[uvIndex + 1] = 0
index = index + pointCount
# create the alchemedia mesh
meshInfo.BuildFromVertexListIndexList(faceCount, faceIndexCountArray,
faceMaterialIndexArray, vertexArray,
vertexIndexArray, normalArray,
uvArray)
# normal are completly bogus in blender, just recalculate proper normals
#meshInfo.SmoothNormals (blenderMesh.degr)
meshInfo.SmoothNormals(30)
def CreateBlenderMeshObjectFromNode (scene, meshNode, blenderScene):
# Get a alchemedia mesh for the node and buidl a blender mesh
mesh = pyScene.pyMesh (scene, meshNode)
# create a blender mesh
newMesh = bpy.data.meshes.new(scene.GetNodeName(meshNode))
# Create all verte and face data
vertexList = []
vertexCount = mesh.GetVertexCount()
for i in range(0, vertexCount):
vertex = mesh.GetVertex (i)
vertexList.append([vertex.x, vertex.y, vertex.z])
faceList = []
faceNode = mesh.GetFirstTriangle()
while faceNode != None:
face = mesh.GetTriangle (faceNode);
faceList.append([face.p0.vertex, face.p1.vertex, face.p2.vertex])
faceNode = mesh.GetNextTriangle(faceNode)
newMesh.verts.extend(vertexList) # add vertices to mesh
newMesh.faces.extend(faceList) # add faces to the mesh (also adds edges)
# create all materials from this mesh
materialIndex = 0
materialMap = {}
meshMaterials = newMesh.materials
childLink = scene.GetFirstChildLink (meshNode)
while childLink != None:
childNode = scene.GetNodeFromLink(childLink)
if scene.IsMaterialNode(childNode) == True:
# make a blender material and a alchemdia material
material = CreateBlenderMaterialFromNode (scene, childNode, blenderScene)
meshMaterials.append(material)
# add a map key for asigning faces
sourceMaterial = pyScene.pyMaterial(scene, childNode)
materialMap[sourceMaterial.GetId()] = materialIndex
materialIndex = materialIndex + 1
childLink = scene.GetNextChildLink (meshNode, childLink)
newMesh.materials = meshMaterials
# In a secund pass asign material and uv mapping to faces
faceIndex = 0
newMesh.faceUV= True
faceNode = mesh.GetFirstTriangle()
while faceNode != None:
face = mesh.GetTriangle (faceNode);
newMesh.faces[faceIndex].mat = materialMap[face.materialIndex]
uv0 = mesh.GetUV0(face.p0.uv0)
uv1 = mesh.GetUV0(face.p1.uv0)
uv2 = mesh.GetUV0(face.p2.uv0)
newMesh.faces[faceIndex].uv = [Vector(uv0.x, uv0.y), Vector(uv1.x, uv1.y), Vector(uv2.x, uv2.y)]
faceIndex = faceIndex + 1
faceNode = mesh.GetNextTriangle(faceNode)
# link mesh to blend objects
object = blenderScene.objects.new(newMesh, scene.GetNodeName(meshNode))
# calculate normal after mesh is parented
#newMesh.mode |= Blender.Mesh.Modes.AUTOSMOOTH
#newMesh.degr = 30
#for face in newMesh.faces:
# face.smooth = 1
#newMesh.calcNormals()
return object
def ExportMesh(scene, sceneNode, blenderScene, blenderObjectMesh): '''convert a blender mesh to an alchemedia node''' # get the blender mesh from teh object blenderMesh = blenderObjectMesh.data # create the mesh node meshNode = scene.CreateMeshNode(sceneNode) meshInfo = pyScene.pyMesh(scene, meshNode) meshInfo.SetName (blenderObjectMesh.getName()) # add the mesh materials hasMaterial = False materialMap = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1]; materials = blenderMesh.getMaterials (1) for i, material in enumerate (materials): if material != None: hasMaterial = True materialMap[i] = i; materialNode = scene.CreateMaterialNode(meshNode, i) materialInfo = pyScene.pyMaterial(scene, materialNode) # export any texture for texture in material.getTextures(): if texture and texture.tex.type == Blender.Texture.Types.IMAGE: image = texture.tex.image if image != None: # create a texture and attache to the material name = image.getName() textureNode = scene.CreateTextureNode(name) scene.AddReference (materialNode, textureNode) # link the texture ID to and the materail textureInfo = pyScene.pyTexture(scene, textureNode) materialInfo.SetAmbientTextId (textureInfo.GetId()) materialInfo.SetDiffuseTextId (textureInfo.GetId()) # if the mesh do not have material add a default material if hasMaterial == False: materialMap[0] = 0; materialNode = scene.CreateMaterialNode(meshNode, 0) # create the vertex List and face arrays faceCount = len(blenderMesh.faces) vertexCount = len(blenderMesh.verts) faceIndexCountArray = pyScene.intArray(faceCount) vertexArray = pyScene.doubleArray(vertexCount * 3) faceMaterialIndexArray = pyScene.intArray(faceCount) vertexIndexArray = pyScene.intArray(faceCount * 4) normalArray = pyScene.doubleArray(faceCount * 4 * 3) uvArray = pyScene.doubleArray(faceCount * 4 * 2) # copy vertex points from the vertex list for i, v in enumerate(blenderMesh.verts): vertexArray[i * 3 + 0] = v.co.x vertexArray[i * 3 + 1] = v.co.y vertexArray[i * 3 + 2] = v.co.z # copy face data from the face list index = 0 if blenderMesh.hasFaceUV() == True: # mesh with uv mapping for i, face in enumerate(blenderMesh.faces): pointCount = len(face.v) faceMaterialIndexArray[i] = face.mat faceIndexCountArray[i] = pointCount for j, point in enumerate(face): vertexIndexArray[index + j] = point.index normalIndex = (index + j) * 3 normalArray[normalIndex + 0] = point.no.x normalArray[normalIndex + 1] = point.no.y normalArray[normalIndex + 2] = point.no.z uvIndex = (index + j) * 2 uvArray[uvIndex + 0] = face.uv[j][0] uvArray[uvIndex + 1] = face.uv[j][1] index = index + pointCount else: # mesh have no uv mapping for i, face in enumerate(blenderMesh.faces): pointCount = len(face.v) faceMaterialIndexArray[i] = face.mat faceIndexCountArray[i] = pointCount for j, point in enumerate(face): vertexIndexArray[index + j] = point.index normalIndex = (index + j) * 3 normalArray[normalIndex + 0] = point.no.x normalArray[normalIndex + 1] = point.no.y normalArray[normalIndex + 2] = point.no.z uvIndex = (index + j) * 2 uvArray[uvIndex + 0] = 0 uvArray[uvIndex + 1] = 0 index = index + pointCount # create the alchemedia mesh meshInfo.BuildFromVertexListIndexList(faceCount, faceIndexCountArray, faceMaterialIndexArray, vertexArray, vertexIndexArray, normalArray, uvArray); # normal are completly bogus in blender, just recalculate proper normals #meshInfo.SmoothNormals (blenderMesh.degr) meshInfo.SmoothNormals (30)
def CreateBlenderMeshObjectFromNode(scene, meshNode, blenderScene):
# Get a alchemedia mesh for the node and buidl a blender mesh
mesh = pyScene.pyMesh(scene, meshNode)
# create a blender mesh
newMesh = bpy.data.meshes.new(scene.GetNodeName(meshNode))
# Create all verte and face data
vertexList = []
vertexCount = mesh.GetVertexCount()
for i in range(0, vertexCount):
vertex = mesh.GetVertex(i)
vertexList.append([vertex.x, vertex.y, vertex.z])
faceList = []
faceNode = mesh.GetFirstTriangle()
while faceNode != None:
face = mesh.GetTriangle(faceNode)
faceList.append([face.p0.vertex, face.p1.vertex, face.p2.vertex])
faceNode = mesh.GetNextTriangle(faceNode)
newMesh.verts.extend(vertexList) # add vertices to mesh
newMesh.faces.extend(faceList) # add faces to the mesh (also adds edges)
# create all materials from this mesh
materialIndex = 0
materialMap = {}
meshMaterials = newMesh.materials
childLink = scene.GetFirstChildLink(meshNode)
while childLink != None:
childNode = scene.GetNodeFromLink(childLink)
if scene.IsMaterialNode(childNode) == True:
# make a blender material and a alchemdia material
material = CreateBlenderMaterialFromNode(scene, childNode,
blenderScene)
meshMaterials.append(material)
# add a map key for asigning faces
sourceMaterial = pyScene.pyMaterial(scene, childNode)
materialMap[sourceMaterial.GetId()] = materialIndex
materialIndex = materialIndex + 1
childLink = scene.GetNextChildLink(meshNode, childLink)
newMesh.materials = meshMaterials
# In a secund pass asign material and uv mapping to faces
faceIndex = 0
newMesh.faceUV = True
faceNode = mesh.GetFirstTriangle()
while faceNode != None:
face = mesh.GetTriangle(faceNode)
newMesh.faces[faceIndex].mat = materialMap[face.materialIndex]
uv0 = mesh.GetUV0(face.p0.uv0)
uv1 = mesh.GetUV0(face.p1.uv0)
uv2 = mesh.GetUV0(face.p2.uv0)
newMesh.faces[faceIndex].uv = [
Vector(uv0.x, uv0.y),
Vector(uv1.x, uv1.y),
Vector(uv2.x, uv2.y)
]
faceIndex = faceIndex + 1
faceNode = mesh.GetNextTriangle(faceNode)
# link mesh to blend objects
object = blenderScene.objects.new(newMesh, scene.GetNodeName(meshNode))
# calculate normal after mesh is parented
#newMesh.mode |= Blender.Mesh.Modes.AUTOSMOOTH
#newMesh.degr = 30
#for face in newMesh.faces:
# face.smooth = 1
#newMesh.calcNormals()
return object