如何为SCNPhysicsShape声明多个选项

Question

我需要在[SCNPhysicsShape shapeWithGeometry：options：]中声明ShapeTypeKey和ShapeScaleKey所有想到的选项。例如，我当前的代码类似于;

NSValue *nodeScale = [NSValue valueWithSCNVector3:SCNVector3Make(200, 400, 150)];
SCNScene *stackScene = [SCNScene sceneNamed:@"stackoverflow.dae"];
SCNNode *stackNode = [stackScene.rootNode childNodeWithName:@"Grid" recursively:NO];
SCNGeometry *nodeGeometry = stackNode.geometry;

stackNode.physicsBody.physicsShape = [SCNPhysicsShape shapeWithGeometry:nodeGeometry options:@{SCNPhysicsShapeTypeKey:SCNPhysicsShapeTypeConcavePolyhedron}];
stackNode.physicsBody.physicsShape = [SCNPhysicsShape shapeWithGeometry:nodeGeometry options:@{SCNPhysicsShapeScaleKey:nodeScale}];

这显然会用后者覆盖前者。

Answer 1

作为一本字典，你可以这样做：

stackNode.physicsBody.physicsShape = [SCNPhysicsShape shapeWithGeometry:nodeGeometry options:@{SCNPhysicsShapeTypeKey:SCNPhysicsShapeTypeConcavePolyhedron, SCNPhysicsShapeScaleKey:nodeScale}];

字典中的每个元素都可以用逗号分隔