添加插件

Assets/Obi/Resources/Compute/SurfacePoint.cginc

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+#ifndef SURFACEPOINT_INCLUDE
+#define SURFACEPOINT_INCLUDE
+
+/**
+ * point in the surface of a signed distance field.
+ */
+struct SurfacePoint
+{
+    float4 bary;
+    float4 pos;
+    float4 normal;
+};
+
+interface IDistanceFunction
+{
+    void Evaluate(in float4 pos, in float4 radii, in quaternion orientation, inout SurfacePoint projectedPoint);
+};
+
+#endif