Trace Multi-Ray

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Trace Multi-Ray

The Trace Multi-Ray node can send sample rays in any number of directions simultaneously. Various types of information can be gathered at the point of impact. For example, the average distance between these collisions and the start point can be calculated. In this example, the rays are directed at a colored cube. Surfaces that cannot see the cube directly remain darker than the regions that face the cube. A simple direction-based Ambient Occlusion is created. 跟踪多射线节点可以同时向任意多个方向发送采样射线。可以在撞击点收集各种类型的信息。例如，可以计算这些碰撞与起始点之间的平均距离。在这个例子中，光线对准一个有色的立方体。不能直接看到立方体的表面会比面对立方体的区域颜色更深。创建一个简单的基于方向的环境遮挡

This node can output a bundle of calculation rays and their results. This makes it possible, for example, to measure distances to neighboring surfaces, as is needed for calculating Subsurface Scattering or Ambient Occlusion.

这个节点可以输出一束计算射线及其结果。这使得测量邻近表面的距离成为可能，就像计算次表面散射或环境遮挡所需要的那样。