55 lines
1.9 KiB
C#
55 lines
1.9 KiB
C#
#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
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using UnityEngine;
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using Unity.Jobs;
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using Unity.Collections;
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using Unity.Mathematics;
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using Unity.Burst;
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using System;
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using System.Collections;
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namespace Obi
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{
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[BurstCompile]
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struct BuildSimplexAabbs : IJobParallelFor
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{
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[ReadOnly] public NativeArray<float4> radii;
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[ReadOnly] public NativeArray<float> fluidRadii;
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[ReadOnly] public NativeArray<float4> positions;
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[ReadOnly] public NativeArray<float4> velocities;
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// simplex arrays:
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[ReadOnly] public NativeArray<int> simplices;
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[ReadOnly] public SimplexCounts simplexCounts;
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[ReadOnly] public NativeArray<int> particleMaterialIndices;
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[ReadOnly] public NativeArray<BurstCollisionMaterial> collisionMaterials;
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[ReadOnly] public float collisionMargin;
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[ReadOnly] public float continuousCollisionDetection;
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[ReadOnly] public float dt;
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public NativeArray<BurstAabb> simplexBounds;
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public void Execute(int i)
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{
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int simplexStart = simplexCounts.GetSimplexStartAndSize(i, out int simplexSize);
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var bounds = new BurstAabb(float.MaxValue, float.MinValue);
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for (int j = 0; j < simplexSize; ++j)
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{
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int p = simplices[simplexStart + j];
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// Find this particle's stick distance:
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int m = particleMaterialIndices[p];
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float stickDistance = m >= 0 ? collisionMaterials[m].stickDistance : 0;
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// Expand simplex bounds, using both the particle's original position and its velocity:
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bounds.EncapsulateParticle(positions[p], positions[p] + velocities[p] * continuousCollisionDetection * dt,
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math.max(radii[p].x + stickDistance, fluidRadii[p] * 0.5f) + collisionMargin);
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}
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simplexBounds[i] = bounds;
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}
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}
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}
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#endif |