def primitiveSetFromList(cls, primitiveType, vertexIndexList):
primitiveSet = osg.DrawElementsUInt(primitiveType, len(vertexIndexList))
arrayPointer = pointer(c_uint.from_address(int(primitiveSet.getDataPointer()))) # pylint: disable=E1101
offset = 0
for vertex in vertexIndexList:
arrayPointer[offset] = vertex
offset += 1
return primitiveSet
def createTesselatedBox(nsplit, size):
geometry = osgAnimation.RigGeometry()
vertices = osg.Vec3Array()
colors = osg.Vec3Array()
geometry.setVertexArray(vertices)
geometry.setColorArray(colors)
geometry.setColorBinding(osg.Geometry.BIND_PER_VERTEX)
step = size / nsplit
s = 0.5 / 4.0
for i in range(nsplit):
x = -1 + i * step
vertices.push_back(osg.Vec3(x, s, s))
vertices.push_back(osg.Vec3(x, -s, s))
vertices.push_back(osg.Vec3(x, -s, -s))
vertices.push_back(osg.Vec3(x, s, -s))
c = osg.Vec3(0, 0, 0)
c[i % 3] = 1
colors.push_back(c)
colors.push_back(c)
colors.push_back(c)
colors.push_back(c)
faces = osg.DrawElementsUInt(osg.PrimitiveSet.TRIANGLES, 0)
for i in range(nsplit - 1):
base = i * 4
faces.push_back(base)
faces.push_back(base + 1)
faces.push_back(base + 4)
faces.push_back(base + 1)
faces.push_back(base + 5)
faces.push_back(base + 4)
faces.push_back(base + 3)
faces.push_back(base)
faces.push_back(base + 4)
faces.push_back(base + 7)
faces.push_back(base + 3)
faces.push_back(base + 4)
faces.push_back(base + 5)
faces.push_back(base + 1)
faces.push_back(base + 2)
faces.push_back(base + 2)
faces.push_back(base + 6)
faces.push_back(base + 5)
faces.push_back(base + 2)
faces.push_back(base + 3)
faces.push_back(base + 7)
faces.push_back(base + 6)
faces.push_back(base + 2)
faces.push_back(base + 7)
geometry.addPrimitiveSet(faces)
geometry.setUseDisplayList(False)
return geometry
# create a root node node = osg.Group() # Line Geometry lineGeode = osg.Geode() lineGeometry = osg.Geometry() lineGeode.addDrawable(lineGeometry) lineStateSet = lineGeode.getOrCreateStateSet() lineVertices = osg.Vec3Array() lineVertices.push_back(osg.Vec3(-10, 10, 0)) lineVertices.push_back(osg.Vec3(-10, -10, 0)) lineGeometry.setVertexArray(lineVertices) lineBase = osg.DrawElementsUInt(osg.PrimitiveSet.LINES, 0) lineBase.push_back(0) lineBase.push_back(1) lineGeometry.addPrimitiveSet(lineBase) node.addChild(lineGeode) # Pyramid geometry, following tutorial pyramidGeode = osg.Geode() pyramidGeometry = osg.Geometry() pyramidGeode.addDrawable(pyramidGeometry) pyramidStateSet = pyramidGeode.getOrCreateStateSet() pyramidVertices = osg.Vec3Array() pyramidVertices.push_back(osg.Vec3(0, 0, 0)) pyramidVertices.push_back(osg.Vec3(10, 0, 0))
# create a root node node = osg.Group() # Line Geometry lineGeode = osg.Geode() lineGeometry = osg.Geometry() lineGeode.addDrawable(lineGeometry) lineStateSet = lineGeode.getOrCreateStateSet() lineVertices = osg.Vec3Array() lineVertices.push_back(osg.Vec3(-10, 10, 0)) lineVertices.push_back(osg.Vec3(-10, -10, 0)) lineGeometry.setVertexArray(lineVertices) lineBaseA = osg.DrawElementsUInt(osg.PrimitiveSet.LINES, 0) lineBase = lineBaseA.asVector() lineBase.push_back(0) lineBase.push_back(1) lineGeometry.addPrimitiveSet(lineBaseA) node.addChild(lineGeode) # Pyramid geometry, following tutorial pyramidGeode = osg.Geode() pyramidGeometry = osg.Geometry() pyramidGeode.addDrawable(pyramidGeometry) pyramidStateSet = pyramidGeode.getOrCreateStateSet() pyramidVertices = osg.Vec3Array() pyramidVertices.push_back(osg.Vec3(0, 0, 0))