如何为 SCNPhysicsShape 声明多个选项

Question

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

NSValue *nodeScale = [NSValue valueWithSCNVector3:SCNVector3Make(200, 400, 150)];
SCNScene *stackScene = [SCNScene sceneNamed:@"Whosebug.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}];

这显然用后者覆盖了前者。

Answer 1

因为它是一本字典，你可以这样做：

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

字典中的每个元素可以用逗号分隔

如何为 SCNPhysicsShape 声明多个选项

How to declare more than one option for SCNPhysicsShape

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