去掉obi，使用自写绳索

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

@@ -1,87 +0,0 @@
-#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 CalculateSimplexBoundsJob : IJobParallelFor
-    {
-        [ReadOnly] public NativeArray<float4> radii;
-        [ReadOnly] public NativeArray<float4> fluidMaterials;
-        [ReadOnly] public NativeArray<float4> positions;
-        [ReadOnly] public NativeArray<float4> velocities;
-
-        // simplex arrays:
-        [ReadOnly] public NativeArray<int> simplices;
-        [ReadOnly] public SimplexCounts simplexCounts;
-
-        [ReadOnly] public NativeArray<int> particleMaterialIndices;
-        [ReadOnly] public NativeArray<BurstCollisionMaterial> collisionMaterials;
-        public NativeArray<BurstAabb> simplexBounds;
-        public NativeArray<BurstAabb> reducedBounds;
-
-        [ReadOnly] public Oni.SolverParameters parameters;
-        [ReadOnly] public float dt;
-
-        public void Execute(int i)
-        {
-            int simplexStart = simplexCounts.GetSimplexStartAndSize(i, out int simplexSize);
-
-            var sxBounds = new BurstAabb(float.MaxValue, float.MinValue);
-            var soBounds = new BurstAabb(float.MaxValue, float.MinValue);
-
-            for (int j = 0; j < simplexSize; ++j)
-            {
-                int p = simplices[simplexStart + j];
-
-                int m = particleMaterialIndices[p];
-                float solidRadius = radii[p].x + (m >= 0 ? collisionMaterials[m].stickDistance : 0);
-
-                // Expand simplex bounds, using both the particle's original position and its velocity.
-                // Add collision margin for both fluid neighborhood too (prevents explosions at high pressures due to neighborhood deficiency)
-                sxBounds.EncapsulateParticle(positions[p],
-                                             BurstIntegration.IntegrateLinear(positions[p], velocities[p], dt * parameters.particleCCD),
-                                             math.max(solidRadius, fluidMaterials[p].x * 0.5f) + parameters.collisionMargin);
-
-                soBounds.EncapsulateParticle(positions[p],
-                                             BurstIntegration.IntegrateLinear(positions[p], velocities[p], dt),
-                                             solidRadius);
-            }
-
-            simplexBounds[i] = sxBounds;
-            reducedBounds[i] = soBounds;
-        }
-    }
-
-    [BurstCompile]
-    struct BoundsReductionJob : IJobParallelFor
-    {
-        [NativeDisableParallelForRestriction] public NativeArray<BurstAabb> bounds; // the length of bounds must be a multiple of size.
-        [ReadOnly] public int stride;
-        [ReadOnly] public int size;
-
-        public void Execute(int first)
-        {
-            int baseIndex = first * size;
-            for (int i = 1; i < size; ++i)
-            {
-                int dest = baseIndex * stride;
-                int source = (baseIndex + i) * stride;
-
-                if (source < bounds.Length)
-                {
-                    var v = bounds[dest];
-                    v.EncapsulateBounds(bounds[source]);
-                    bounds[dest] = v;
-                }
-            }
-        }
-    }
-}
-#endif