试图弄清楚我如何创建一个多边形作为原始类型的SCNGeometry，我的目标是添加多边形节点作为球体节点的子节点，并使其看起来像map套件的MKPolygon，likeinthisexample.我当前的代码是://Takeanarbitraryarrayofvectorsletvertices:[SCNVector3]=[SCNVector3Make(-0.1304485,0.551937,0.8236193),SCNVector3Make(0.01393811,0.601815,0.7985139),SCNVector3Make(0.2971005,0.5591929,0.7739

这段代码摘录(场景、相机、灯光等。从代码中截取)在iOS模拟器上以Swift运行:letboxNode=SCNNode()//CreateaboxboxNode.geometry=SCNBox(width:1,height:1,length:1,chamferRadius:0.1)letnumFaces=6scene.rootNode.addChildNode(boxNode)//createandconfigureamaterialforeachfacevarmaterials:[SCNMaterial]=Array()foriin1...numFaces{letmaterial=S