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Graph.py
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Graph.py
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import numpy as np
import maya.cmds as cmds
import maya.mel as mel
import LinAlg
import math
class NodeType(object):
translate = 0
rotate = 1
scale = 2
init = 3
split = 4
mesh = 5
splitSegment = 6
repeat = 7
@staticmethod
def getString(nodeType):
if nodeType == 0:
return "Translate"
if nodeType == 1:
return "Rotate"
if nodeType == 2:
return "Scale"
if nodeType == 3:
return "Initial"
if nodeType == 4:
return "Split"
if nodeType == 5:
return "Mesh"
if nodeType == 6:
return "Split Segment"
if nodeType == 7:
return "Repeat"
class Node(object):
def __init__(self, nodeType, nodz, nodzToNode, isPlug, isSocket):
self.nodeType = nodeType
self.children = []
self.nodzNode = nodz.createNode(name=NodeType.getString(nodeType), preset='node_preset_1', position=None)
self.nodz = nodz
self.graph = None
self.parent = None
nodz.createAttribute(node=self.nodzNode, name='Node', index=-1, preset='attr_preset_1', plug=isPlug, socket=isSocket, dataType=str)
nodzToNode[self.nodzNode] = self
class InitialNode(Node):
def __init__(self, nodz, nodzToNode):
super(InitialNode, self).__init__(NodeType.init, nodz, nodzToNode, True, False)
self.lotX = 10
self.lotY = 10
self.lotZ = 10
class TranslateNode(Node):
def __init__(self, nodz, nodzToNode):
super(TranslateNode, self).__init__(NodeType.translate, nodz, nodzToNode, True, True)
self.translateX = 0
self.translateY = 0
self.translateZ = 0
class RotateNode(Node):
def __init__(self, nodz, nodzToNode):
super(RotateNode, self).__init__(NodeType.rotate, nodz, nodzToNode, True, True)
self.rotateX = 0
self.rotateY = 0
self.rotateZ = 0
class ScaleNode(Node):
def __init__(self, nodz, nodzToNode):
super(ScaleNode, self).__init__(NodeType.scale, nodz, nodzToNode, True, True)
self.scaleX = 1
self.scaleY = 1
self.scaleZ = 1
class SplitNode(Node):
def __init__(self, nodz, nodzToNode):
super(SplitNode, self).__init__(NodeType.split, nodz, nodzToNode, False, True)
self.segmentCount = 0
#Directions => 0=X, 1=Y, 2=Z
self.segmentDirection = 0
class SplitSegmentNode(Node):
def __init__(self, nodz, nodzToNode):
self.nodeType = NodeType.splitSegment
self.nodzNode = None
self.children = []
self.nodz = nodz
self.graph = None
self.parent = None
self.idx = None
self.proportion = 1
class MeshNode(Node):
def __init__(self, nodz, nodzToNode):
super(MeshNode, self).__init__(NodeType.mesh, nodz, nodzToNode, False, True)
self.isSet = False
self.filePath = None
class RepeatNode(Node):
count = None
percentage = None
def __init__(self, nodz, nodzToNode):
super(RepeatNode, self).__init__(NodeType.repeat, nodz, nodzToNode, True, True)
self.direction = 0
self.count = 5
self.percentage = 20.0
class Graph(object):
mesh_ID = 0
def __init__(self, nodz):
self.nodzToNode = {}
self.nodes = set()
self.nodz = nodz
self.root = InitialNode(self.nodz, self.nodzToNode)
self.nodes.add(self.root)
file_ID = 0
def getNodeFromNodz(self, nodzNode):
return self.nodzToNode[nodzNode]
def addNode(self, nodeType):
newNode = None
if(nodeType == NodeType.translate):
newNode = TranslateNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.rotate):
newNode = RotateNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.scale):
newNode = ScaleNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.split):
newNode = SplitNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.splitSegment):
newNode = SplitSegmentNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.mesh):
newNode = MeshNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.repeat):
newNode = RepeatNode(self.nodz, self.nodzToNode)
elif(nodeType == NodeType.init):
newNode = InitialNode(self.nodz, self.nodzToNode)
self.nodes.add(newNode)
return newNode
def createEdge(self, srcNodzNode, srcPlugName, destNodzNode, dstSocketName):
if self.nodzToNode[srcNodzNode].nodeType == NodeType.split and "Segment" in srcPlugName:
self.nodzToNode[srcNodzNode].children[int(srcPlugName[len(srcPlugName)-1])].children.append(self.nodzToNode[destNodzNode])
self.nodzToNode[destNodzNode].parent = self.nodzToNode[srcNodzNode].children[int(srcPlugName[len(srcPlugName)-1])]
else:
self.nodzToNode[srcNodzNode].children.append(self.nodzToNode[destNodzNode])
self.nodzToNode[destNodzNode].parent = self.nodzToNode[srcNodzNode]
def createManualEdge(self, srcNode, srcAttrib, destNode, destAttrib):
self.nodz.createConnection(srcNode.nodzNode, srcAttrib, destNode.nodzNode, destAttrib)
destNode.parent = srcNode
def printGraph(self):
queue = [self.root]
while len(queue) > 0:
curr = queue.pop()
if len(curr.children) == 0:
print NodeType.getString(curr.nodeType)
attrsParent = vars(curr)
print ', '.join("%s: %s" % item for item in attrsParent.items())
print ""
for child in curr.children:
print NodeType.getString(curr.nodeType) + " -> " + NodeType.getString(child.nodeType)
attrsParent = vars(curr)
attrsChild = vars(child)
print ', '.join("%s: %s" % item for item in attrsParent.items())
print ', '.join("%s: %s" % item for item in attrsChild.items())
queue.append(child)
print ""
print "----------------"
def generateMesh(self):
# First delete all the existing geometry in the scene
transforms = cmds.ls(tr=True)
polyMeshes = cmds.filterExpand(transforms, sm=12)
cmds.select(polyMeshes, r=True)
cmds.delete()
self.file_ID = 0
self.generateMeshHelper(self.root, np.array([0.0,0.0,0.0]), np.array([1.0,0.0,0.0,0.0]),
np.array([1.0*self.root.lotX, 1.0*self.root.lotY, 1.0*self.root.lotZ]))
def generateMeshHelper(self, node, translate, rotate, scale):
# Translate Node
if node.nodeType == NodeType.translate:
translate = np.add(translate, np.array([node.translateX, node.translateY, node.translateZ]))
# Rotate Node
elif node.nodeType == NodeType.rotate:
rotate = LinAlg.quaternion_multiply(rotate, LinAlg.quaternion_from_euler(node.rotateX, node.rotateY, node.rotateZ,'sxyz'))
# Scale Node
elif node.nodeType == NodeType.scale:
scale = np.multiply(scale, np.array([node.scaleX, node.scaleY, node.scaleZ]))
# Mesh Node
elif node.nodeType == NodeType.mesh:
cmds.select( clear=True )
if node.isSet:
cmds.select( clear=True )
#NEW
path = "C:\\Users\\Administrator\\Desktop\\Models\\" + node.filePath + ".ma"
cmds.file(path, i=True, namespace=node.filePath + str(self.mesh_ID), mergeNamespacesOnClash=True)
selection = cmds.ls(node.filePath+ str(self.mesh_ID)+":*", type="mesh")
for item in selection:
cmds.select(item)
ax, ay, az = LinAlg.euler_from_quaternion(rotate)
ax = ax * 180.0 / math.pi
ay = ay * 180.0 / math.pi
az = az * 180.0 / math.pi
cmds.scale(scale[0], scale[1], scale[2])
cmds.move(translate[0] + 0.5 * scale[0],translate[1] + 0.5 * scale[1],translate[2] + 0.5 * scale[2])
cmds.rotate(ax,ay,az)
cmds.select( clear=True )
self.mesh_ID +=1;
else:
cmds.polyCube()
ax, ay, az = LinAlg.euler_from_quaternion(rotate)
ax = ax * 180.0 / math.pi
ay = ay * 180.0 / math.pi
az = az * 180.0 / math.pi
cmds.scale(scale[0], scale[1], scale[2])
cmds.move(translate[0] + 0.5 * scale[0],translate[1] + 0.5 * scale[1],translate[2] + 0.5 * scale[2])
cmds.rotate(ax,ay,az)
# Repeat Node
#NEW!
elif node.nodeType == NodeType.repeat:
if len(node.children) > 0:
#maxRange = min(int(node.count), int(100.0 / (1.0 * node.percentage)))
maxRange = int(node.count)
for i in range(0, maxRange):
percentage = 100.0 / float(node.count)
rot_dir = np.array([0,0,0,1])
rot_dir[node.direction] = scale[node.direction]
# In fact we need to translate rotate to eular angles....FxxK!
ax, ay, az = LinAlg.euler_from_quaternion(rotate)
# Compute Rotate Matrix
R = LinAlg.euler_matrix(ax,ay,az,'sxyz')
# Rotate the scaled direction
rot_dir = np.dot(R , rot_dir)
tempTranslate = np.array(translate)
tempTranslate[0] += rot_dir[0] * i * (1.0 * percentage / 100.0)
tempTranslate[1] += rot_dir[1] * i * (1.0 * percentage / 100.0)
tempTranslate[2] += rot_dir[2] * i * (1.0 * percentage / 100.0)
tempScale = np.array(scale)
tempScale[node.direction] = scale[node.direction] * (1.0 * percentage / 100.0)
for child in node.children:
self.generateMeshHelper(child, np.array(tempTranslate), np.array(rotate), np.array(tempScale))
return
# Split Segment Node
elif node.nodeType == NodeType.splitSegment:
totalWeight = 0.0
prevWeight = 0.0
for i in range(0, len(node.parent.children)):
child = node.parent.children[i]
totalWeight += 1.0 * child.proportion
if i < node.idx:
prevWeight += 1.0 * child.proportion
# Supports any rotation
rot_dir = np.array([0,0,0,1])
rot_dir[node.parent.segmentDirection] = scale[node.parent.segmentDirection]
# In fact we need to translate rotate to eular angles....FxxK!
ax, ay, az = LinAlg.euler_from_quaternion(rotate)
# Compute Rotate Matrix
R = LinAlg.euler_matrix(ax,ay,az,'sxyz')
# Rotate the scaled direction
rot_dir = np.dot(R , rot_dir)
translate[0] += (1.0 * rot_dir[0] * prevWeight) / (1.0 * totalWeight)
translate[1] += (1.0 * rot_dir[1] * prevWeight) / (1.0 * totalWeight)
translate[2] += (1.0 * rot_dir[2] * prevWeight) / (1.0 * totalWeight)
#translate[node.parent.segmentDirection] += (1.0 * scale[node.parent.segmentDirection] * prevWeight) / (1.0 * totalWeight)
scale[node.parent.segmentDirection] *= (1.0 * node.proportion / totalWeight)
# Split Node
elif node.nodeType == NodeType.split:
pass
for child in node.children:
self.generateMeshHelper(child, np.array(translate), np.array(rotate), np.array(scale))