去掉obi，使用自写绳索
This commit is contained in:
@@ -1,26 +0,0 @@
|
||||
#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
|
||||
using System;
|
||||
|
||||
namespace Obi
|
||||
{
|
||||
public class BurstBendConstraints : BurstConstraintsImpl<BurstBendConstraintsBatch>
|
||||
{
|
||||
public BurstBendConstraints(BurstSolverImpl solver) : base(solver, Oni.ConstraintType.Bending)
|
||||
{
|
||||
}
|
||||
|
||||
public override IConstraintsBatchImpl CreateConstraintsBatch()
|
||||
{
|
||||
var dataBatch = new BurstBendConstraintsBatch(this);
|
||||
batches.Add(dataBatch);
|
||||
return dataBatch;
|
||||
}
|
||||
|
||||
public override void RemoveBatch(IConstraintsBatchImpl batch)
|
||||
{
|
||||
batches.Remove(batch as BurstBendConstraintsBatch);
|
||||
batch.Destroy();
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
@@ -1,11 +0,0 @@
|
||||
fileFormatVersion: 2
|
||||
guid: 6c5e3cbf9187d4d39a1bc1a2e2386b00
|
||||
MonoImporter:
|
||||
externalObjects: {}
|
||||
serializedVersion: 2
|
||||
defaultReferences: []
|
||||
executionOrder: 0
|
||||
icon: {instanceID: 0}
|
||||
userData:
|
||||
assetBundleName:
|
||||
assetBundleVariant:
|
||||
@@ -1,168 +0,0 @@
|
||||
#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
|
||||
using UnityEngine;
|
||||
using Unity.Jobs;
|
||||
using Unity.Collections;
|
||||
using Unity.Collections.LowLevel.Unsafe;
|
||||
using Unity.Mathematics;
|
||||
using Unity.Burst;
|
||||
using System.Collections;
|
||||
|
||||
namespace Obi
|
||||
{
|
||||
public class BurstBendConstraintsBatch : BurstConstraintsBatchImpl, IBendConstraintsBatchImpl
|
||||
{
|
||||
private NativeArray<float> restBends;
|
||||
private NativeArray<float2> stiffnesses;
|
||||
private NativeArray<float2> plasticity;
|
||||
|
||||
BendConstraintsBatchJob projectConstraints;
|
||||
ApplyBendConstraintsBatchJob applyConstraints;
|
||||
|
||||
public BurstBendConstraintsBatch(BurstBendConstraints constraints)
|
||||
{
|
||||
m_Constraints = constraints;
|
||||
m_ConstraintType = Oni.ConstraintType.Bending;
|
||||
}
|
||||
|
||||
public void SetBendConstraints(ObiNativeIntList particleIndices, ObiNativeFloatList restBends, ObiNativeVector2List bendingStiffnesses, ObiNativeVector2List plasticity, ObiNativeFloatList lambdas, int count)
|
||||
{
|
||||
this.particleIndices = particleIndices.AsNativeArray<int>();
|
||||
this.restBends = restBends.AsNativeArray<float>();
|
||||
this.stiffnesses = bendingStiffnesses.AsNativeArray<float2>();
|
||||
this.plasticity = plasticity.AsNativeArray<float2>();
|
||||
this.lambdas = lambdas.AsNativeArray<float>();
|
||||
m_ConstraintCount = count;
|
||||
|
||||
projectConstraints.particleIndices = this.particleIndices;
|
||||
projectConstraints.restBends = this.restBends;
|
||||
projectConstraints.stiffnesses = this.stiffnesses;
|
||||
projectConstraints.plasticity = this.plasticity;
|
||||
projectConstraints.lambdas = this.lambdas;
|
||||
|
||||
applyConstraints.particleIndices = this.particleIndices;
|
||||
}
|
||||
|
||||
public override JobHandle Evaluate(JobHandle inputDeps, float stepTime, float substepTime, int steps, float timeLeft)
|
||||
{
|
||||
projectConstraints.positions = solverImplementation.positions;
|
||||
projectConstraints.invMasses = solverImplementation.invMasses;
|
||||
projectConstraints.deltas = solverImplementation.positionDeltas;
|
||||
projectConstraints.counts = solverImplementation.positionConstraintCounts;
|
||||
projectConstraints.deltaTime = substepTime;
|
||||
|
||||
return projectConstraints.Schedule(m_ConstraintCount, 32, inputDeps);
|
||||
}
|
||||
|
||||
public override JobHandle Apply(JobHandle inputDeps, float substepTime)
|
||||
{
|
||||
var parameters = solverAbstraction.GetConstraintParameters(m_ConstraintType);
|
||||
|
||||
applyConstraints.positions = solverImplementation.positions;
|
||||
applyConstraints.deltas = solverImplementation.positionDeltas;
|
||||
applyConstraints.counts = solverImplementation.positionConstraintCounts;
|
||||
applyConstraints.sorFactor = parameters.SORFactor;
|
||||
|
||||
return applyConstraints.Schedule(m_ConstraintCount, 64, inputDeps);
|
||||
}
|
||||
|
||||
[BurstCompile]
|
||||
public struct BendConstraintsBatchJob : IJobParallelFor
|
||||
{
|
||||
[ReadOnly] public NativeArray<int> particleIndices;
|
||||
[ReadOnly] public NativeArray<float2> stiffnesses;
|
||||
[ReadOnly] public NativeArray<float2> plasticity; //plastic yield, creep
|
||||
public NativeArray<float> restBends;
|
||||
public NativeArray<float> lambdas;
|
||||
|
||||
[ReadOnly] public NativeArray<float4> positions;
|
||||
[ReadOnly] public NativeArray<float> invMasses;
|
||||
|
||||
[NativeDisableContainerSafetyRestriction][NativeDisableParallelForRestriction] public NativeArray<float4> deltas;
|
||||
[NativeDisableContainerSafetyRestriction][NativeDisableParallelForRestriction] public NativeArray<int> counts;
|
||||
|
||||
[ReadOnly] public float deltaTime;
|
||||
|
||||
public void Execute(int i)
|
||||
{
|
||||
int p1 = particleIndices[i * 3];
|
||||
int p2 = particleIndices[i * 3 + 1];
|
||||
int p3 = particleIndices[i * 3 + 2];
|
||||
|
||||
float w1 = invMasses[p1];
|
||||
float w2 = invMasses[p2];
|
||||
float w3 = invMasses[p3];
|
||||
|
||||
float wsum = w1 + w2 + 2 * w3;
|
||||
|
||||
float4 bendVector = positions[p3] - (positions[p1] + positions[p2] + positions[p3]) / 3.0f;
|
||||
float bend = math.length(bendVector);
|
||||
|
||||
float constraint = bend - restBends[i];
|
||||
|
||||
constraint = math.max(0, constraint - stiffnesses[i].x) +
|
||||
math.min(0, constraint + stiffnesses[i].x);
|
||||
|
||||
// plasticity:
|
||||
if (math.abs(constraint) > plasticity[i].x)
|
||||
restBends[i] += constraint * plasticity[i].y * deltaTime;
|
||||
|
||||
// calculate time adjusted compliance
|
||||
float compliance = stiffnesses[i].y / (deltaTime * deltaTime);
|
||||
|
||||
// since the third particle moves twice the amount of the other 2, the modulus of its gradient is 2:
|
||||
float dlambda = (-constraint - compliance * lambdas[i]) / (wsum + compliance + BurstMath.epsilon);
|
||||
float4 correction = dlambda * bendVector / (bend + BurstMath.epsilon);
|
||||
|
||||
lambdas[i] += dlambda;
|
||||
|
||||
deltas[p1] -= correction * 2 * w1;
|
||||
deltas[p2] -= correction * 2 * w2;
|
||||
deltas[p3] += correction * 4 * w3;
|
||||
|
||||
counts[p1]++;
|
||||
counts[p2]++;
|
||||
counts[p3]++;
|
||||
}
|
||||
}
|
||||
|
||||
[BurstCompile]
|
||||
public struct ApplyBendConstraintsBatchJob : IJobParallelFor
|
||||
{
|
||||
[ReadOnly] public NativeArray<int> particleIndices;
|
||||
[ReadOnly] public float sorFactor;
|
||||
|
||||
[NativeDisableContainerSafetyRestriction] [NativeDisableParallelForRestriction] public NativeArray<float4> positions;
|
||||
[NativeDisableContainerSafetyRestriction] [NativeDisableParallelForRestriction] public NativeArray<float4> deltas;
|
||||
[NativeDisableContainerSafetyRestriction] [NativeDisableParallelForRestriction] public NativeArray<int> counts;
|
||||
|
||||
public void Execute(int i)
|
||||
{
|
||||
int p1 = particleIndices[i * 3];
|
||||
int p2 = particleIndices[i * 3 + 1];
|
||||
int p3 = particleIndices[i * 3 + 2];
|
||||
|
||||
if (counts[p1] > 0)
|
||||
{
|
||||
positions[p1] += deltas[p1] * sorFactor / counts[p1];
|
||||
deltas[p1] = float4.zero;
|
||||
counts[p1] = 0;
|
||||
}
|
||||
|
||||
if (counts[p2] > 0)
|
||||
{
|
||||
positions[p2] += deltas[p2] * sorFactor / counts[p2];
|
||||
deltas[p2] = float4.zero;
|
||||
counts[p2] = 0;
|
||||
}
|
||||
|
||||
if (counts[p3] > 0)
|
||||
{
|
||||
positions[p3] += deltas[p3] * sorFactor / counts[p3];
|
||||
deltas[p3] = float4.zero;
|
||||
counts[p3] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
@@ -1,11 +0,0 @@
|
||||
fileFormatVersion: 2
|
||||
guid: 3ca9c1fed63774363964743eb64fb68b
|
||||
MonoImporter:
|
||||
externalObjects: {}
|
||||
serializedVersion: 2
|
||||
defaultReferences: []
|
||||
executionOrder: 0
|
||||
icon: {instanceID: 0}
|
||||
userData:
|
||||
assetBundleName:
|
||||
assetBundleVariant:
|
||||
Reference in New Issue
Block a user