def setShape( self, matrix4By4 ): "Set the shape of this carvable object info." self.triangleMesh = triangle_mesh.TriangleMesh() vertexElement = self.object.getFirstChildWithClassName( 'vertex' ) vertexPointElements = vertexElement.getChildrenWithClassName( 'bf:Elem' ) for vertexPointElement in vertexPointElements: coordinateElement = vertexPointElement.getFirstChildWithClassName( 'r' ) vertex = Vector3( float( coordinateElement.attributeTable[ 'x' ] ), float( coordinateElement.attributeTable[ 'y' ] ), float( coordinateElement.attributeTable[ 'z' ] ) ) self.triangleMesh.vertices.append( getVector3TransformedByMatrix( matrix4By4.matrix, vertex ) ) edgeElement = self.object.getFirstChildWithClassName( 'edge' ) edgeSubelements = edgeElement.getChildrenWithClassName( 'bf:Elem' ) for edgeSubelementIndex in xrange( len( edgeSubelements ) ): edgeSubelement = edgeSubelements[ edgeSubelementIndex ] vertexIndexes = [ int( edgeSubelement.attributeTable[ 'v1' ] ), int( edgeSubelement.attributeTable[ 'v2' ] ) ] edge = triangle_mesh.Edge().getFromVertexIndexes( edgeSubelementIndex, vertexIndexes ) self.triangleMesh.edges.append( edge ) faceElement = self.object.getFirstChildWithClassName( 'face' ) faceSubelements = faceElement.getChildrenWithClassName( 'bf:Elem' ) for faceSubelementIndex in xrange( len( faceSubelements ) ): faceSubelement = faceSubelements[ faceSubelementIndex ] edgeIndexes = [ int( faceSubelement.attributeTable[ 'e1' ] ), int( faceSubelement.attributeTable[ 'e2' ] ), int( faceSubelement.attributeTable[ 'e3' ] ) ] face = triangle_mesh.Face().getFromEdgeIndexes( edgeIndexes, self.triangleMesh.edges, faceSubelementIndex ) self.triangleMesh.faces.append( face ) self.bottom = getBottom( self.triangleMesh.vertices ) self.top = getTop( self.triangleMesh.vertices )
def setBottomTopTriangleMesh( self, edgeTriples, matrix4By4, vertexPairs, vertices ): "Set the bottom, top and triangle mesh of this carvable object info." self.triangleMesh = triangle_mesh.TriangleMesh() for vertex in vertices: self.triangleMesh.vertices.append( getVector3TransformedByMatrix( matrix4By4.matrix, vertex ) ) for vertexPairsIndex in xrange( len( vertexPairs ) ): vertexPair = vertexPairs[ vertexPairsIndex ] edge = triangle_mesh.Edge().getFromVertexIndexes( vertexPairsIndex, vertexPair ) self.triangleMesh.edges.append( edge ) for edgeTriplesIndex in xrange( len( edgeTriples ) ): edgeTriple = edgeTriples[ edgeTriplesIndex ] face = triangle_mesh.Face().getFromEdgeIndexes( edgeTriple, self.triangleMesh.edges, edgeTriplesIndex ) self.triangleMesh.faces.append( face ) self.bottom = getBottom( self.triangleMesh.vertices ) self.top = getTop( self.triangleMesh.vertices )
def getFromGNUTriangulatedSurfaceText(gnuTriangulatedSurfaceText,
triangleMesh):
"Initialize from a GNU Triangulated Surface Text."
if gnuTriangulatedSurfaceText == '':
return None
lines = gcodec.getTextLines(gnuTriangulatedSurfaceText)
linesWithoutComments = []
for line in lines:
if len(line) > 0:
firstCharacter = line[0]
if firstCharacter != '#' and firstCharacter != '!':
linesWithoutComments.append(line)
splitLine = linesWithoutComments[0].split()
numberOfVertices = int(splitLine[0])
numberOfEdges = int(splitLine[1])
numberOfFaces = int(splitLine[2])
faceTriples = []
for vertexIndex in xrange(numberOfVertices):
line = linesWithoutComments[vertexIndex + 1]
splitLine = line.split()
vertex = Vector3(float(splitLine[0]), float(splitLine[1]),
float(splitLine[2]))
triangleMesh.vertices.append(vertex)
edgeStart = numberOfVertices + 1
for edgeIndex in xrange(numberOfEdges):
line = linesWithoutComments[edgeIndex + edgeStart]
splitLine = line.split()
vertexIndexes = []
for word in splitLine[:2]:
vertexIndexes.append(int(word) - 1)
edge = triangle_mesh.Edge().getFromVertexIndexes(
edgeIndex, vertexIndexes)
triangleMesh.edges.append(edge)
faceStart = edgeStart + numberOfEdges
for faceIndex in xrange(numberOfFaces):
line = linesWithoutComments[faceIndex + faceStart]
splitLine = line.split()
edgeIndexes = []
for word in splitLine[:3]:
edgeIndexes.append(int(word) - 1)
face = triangle_mesh.Face().getFromEdgeIndexes(edgeIndexes,
triangleMesh.edges,
faceIndex)
triangleMesh.faces.append(face)
return triangleMesh