Global Variable

SCNHitTestRootNodeKey

The root of the node hierarchy to be searched.

Declaration

const SCNHitTestOption SCNHitTestRootNodeKey;

Discussion

The value for this key is an SCNNode object. Hit-testing searches only the child node hierarchy under this node. When hit-testing takes place in the screen space of an SCNSceneRenderer object with the hitTest:options: method, the default value is the presented scene’s root node. When hit-testing is in a node using its hitTestWithSegmentFromPoint:toPoint:options:, the default value is the node.

See Also

Options

SCNHitTestBackFaceCullingKey

An option to ignore faces not oriented toward the camera.

SCNHitTestBoundingBoxOnlyKey

An option to search for objects by bounding box only.

SCNHitTestOptionCategoryBitMask

An option to search only for objects matching a specified bitmask.

SCNHitTestClipToZRangeKey

An option to search for objects only within the depth range of the current point of view.

SCNHitTestIgnoreChildNodesKey

An option to ignore child nodes when searching.

SCNHitTestIgnoreHiddenNodesKey

An option to ignore hidden nodes when searching.

SCNHitTestOptionSearchMode

An option for the number and order of hit test results to provide.

SCNHitTestSearchMode

Possible values for the SCNHitTestOptionSearchMode option used with hit-testing methods.