1、通过SCNGeometry或子类SCNParametricGeometry创建

　　相关链接：  

                     

 

2、创建多个场景SCNScene读取其子node

SCNNode *newNode = [SCNNode node];    newNode.position = SCNVector3Make(0, 5, 0);    [self.sCNView.scene.rootNode addChildNode:newNode];    SCNScene *sceneShip = [SCNScene sceneNamed:@"art.scnassets/ship.scn"];    for (id node in sceneShip.rootNode.childNodes) {        [newNode addChildNode:node];    }