morph1.swift

if refresh {
    morpher.targets = [cubeGeometry2,cubeGeometry]
    cubeNode.morpher = morpher
    SCNTransaction.begin()
    SCNTransaction.animationDuration = 4.0
    cubeNode.morpher?.setWeight(1.0, forTargetAt: 0)
    SCNTransaction.completionBlock = {
        newNode = SCNNode(geometry: cubeGeometry2)
        cubeNode.removeFromParentNode()
        coreNode.addChildNode(newNode)
    }
    SCNTransaction.commit()
} else {
    morpher.targets = [cubeGeometry]
    newNode.morpher = morpher
    SCNTransaction.begin()
    SCNTransaction.animationDuration = 4.0
    newNode.morpher?.setWeight(1.0, forTargetAt: 0)
    SCNTransaction.completionBlock = {
        cubeNode = SCNNode(geometry: cubeGeometry)
        newNode.removeFromParentNode()
        coreNode.addChildNode(cubeNode)
    }
    SCNTransaction.commit()
}