重新导入obi

Assets/Obi/Scripts/Common/Backends/Burst/Solver/UpdatePrincipalAxisJob.cs

@@ -0,0 +1,50 @@
+#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
+using UnityEngine;
+using Unity.Jobs;
+using Unity.Collections;
+using Unity.Mathematics;
+using Unity.Burst;
+using System;
+using System.Collections;
+
+namespace Obi
+{
+    [BurstCompile]
+    struct UpdatePrincipalAxisJob : IJobParallelFor
+    {
+        [ReadOnly] public NativeArray<int> activeParticles;
+        [ReadOnly] public NativeArray<quaternion> renderableOrientations;
+        [ReadOnly] public NativeArray<int> phases;
+        [ReadOnly] public NativeArray<float4> principalRadii;
+
+        [NativeDisableParallelForRestriction]
+        public NativeArray<float4> principalAxis;
+
+        public void Execute(int index)
+        {
+            int i = activeParticles[index];
+
+            // fluid particles get their principal axes from the neighborhood matrix, so skip them.
+            if ((phases[i] & (int)ObiUtils.ParticleFlags.Fluid) == 0)
+            {
+                int i3 = i * 3;
+                float4x4 rot = renderableOrientations[i].toMatrix();
+
+                // set axis direction:
+                float4 pAxis1 = rot.c0;
+                float4 pAxis2 = rot.c1;
+                float4 pAxis3 = rot.c2;
+
+                // set axis length:
+                pAxis1[3] = principalRadii[i][0];
+                pAxis2[3] = principalRadii[i][1];
+                pAxis3[3] = principalRadii[i][2];
+
+                principalAxis[i3] = pAxis1;
+                principalAxis[i3+1] = pAxis2;
+                principalAxis[i3+2] = pAxis3;
+            }
+        }
+    }
+}
+#endif