如何为 SCNPhysicsShape 声明多个选项答案

【问题标题】：How to declare more than one option for SCNPhysicsShape如何为 SCNPhysicsShape 声明多个选项
【发布时间】：2015-01-01 23:28:30
【问题描述】：

我需要在 [SCNPhysicsShape shapeWithGeometry: options:] 中声明 ShapeTypeKey 和 ShapeScaleKey ，所有想到的选项都很短。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}];

这显然用后者覆盖了前者。

【问题讨论】：

标签： ios objective-c scenekit

【解决方案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}];

字典中的每个元素都可以用逗号分隔

【讨论】：