private void SetupParticles()
{
if (rootBoneTransform == null)
{
return;
}
particleCount = 0;
HeadInfo = new HeadInfo
{
ObjectPrevPosition = rootBoneTransform.position,
ObjectScale = math.abs(rootBoneTransform.lossyScale.x),
Gravity = gravity,
Weight = weight,
Force = force,
ParticleCount = 0,
};
particleCount = 0;
boneTotalLength = 0;
AppendParticles(rootBoneTransform, -1, 0, in HeadInfo);
UpdateParameters();
HeadInfo.ParticleCount = particleCount;
}
/// <summary>
/// 当目标骨骼需要移除的时候使用，目前还不完善，先不要使用
/// </summary>
/// <param name="target">要移除的目标骨骼</param>
public void RemoveBone(DynamicBone target)
{
int index = boneList.IndexOf(target);
if (index == -1)
{
return;
}
//TODO:移除骨骼的逻辑
boneList.RemoveAt(index);
int curHeadIndex = target.HeadInfo.Index;
//移除Bone的相关Collider的关系
boneColliderMatchMap.Remove(curHeadIndex);
//是否是队列中末尾对象
bool isEndTarget = curHeadIndex == headInfoList.Length - 1;
if (isEndTarget)
{
headInfoList.RemoveAtSwapBack(curHeadIndex);
headTransformAccessArray.RemoveAtSwapBack(curHeadIndex);
for (int i = MaxParticleLimit - 1; i >= 0; i--)
{
int dataOffset = curHeadIndex * MaxParticleLimit + i;
particleInfoList.RemoveAtSwapBack(dataOffset);
particleTransformAccessArray.RemoveAtSwapBack(dataOffset);
}
}
else
{
//将最末列的HeadInfo 索引设置为当前将要移除的HeadInfo 索引
DynamicBone lastTarget = boneList[boneList.Count - 1];
HeadInfo lastHeadInfo = lastTarget.ResetHeadIndexAndDataOffset(curHeadIndex);
headInfoList.RemoveAtSwapBack(curHeadIndex);
headInfoList[curHeadIndex] = lastHeadInfo;
headTransformAccessArray.RemoveAtSwapBack(curHeadIndex);
for (int i = MaxParticleLimit - 1; i >= 0; i--)
{
int dataOffset = curHeadIndex * MaxParticleLimit + i;
particleInfoList.RemoveAtSwapBack(dataOffset);
particleTransformAccessArray.RemoveAtSwapBack(dataOffset);
}
}
target.ClearJobData();
}
public void Execute(int index, TransformAccess transform)
{
HeadInfo curHeadInfo = HeadArray[index];
curHeadInfo.RootParentBoneWorldPosition = transform.position;
curHeadInfo.RootParentBoneWorldRotation = transform.rotation;
curHeadInfo.ObjectMove = transform.position - (Vector3)curHeadInfo.ObjectPrevPosition;
curHeadInfo.ObjectPrevPosition = transform.position;
float3 force = curHeadInfo.Gravity;
float3 forceDir = math.normalizesafe(force);
float3 pf = forceDir * math.max(math.dot(force, forceDir),
0); // project current gravity to rest gravity
force -= pf; // remove projected gravity
force = (force + curHeadInfo.Force) * curHeadInfo.ObjectScale;
curHeadInfo.FinalForce = force;
HeadArray[index] = curHeadInfo;
}
public void Execute(int index)
{
int headIndex = index / MaxParticleLimit;
HeadInfo curHeadInfo = HeadArray[headIndex];
int offset = index % MaxParticleLimit;
//每个Head及其Particle只需要计算一次就够了！
if (offset == 0)
{
float3 parentPosition = curHeadInfo.RootParentBoneWorldPosition;
quaternion parentRotation = curHeadInfo.RootParentBoneWorldRotation;
for (int j = 0; j < curHeadInfo.ParticleCount; j++)
{
int pIdx = curHeadInfo.DataOffsetInGlobalArray + j;
ParticleInfo p = ParticleArray[pIdx];
float3 localPosition = p.LocalPosition * p.ParentScale;
quaternion localRotation = p.LocalRotation;
float3 worldPosition =
Util.LocalToWorldPosition(parentPosition, parentRotation, localPosition);
quaternion worldRotation =
Util.LocalToWorldRotation(parentRotation, localRotation);
parentPosition = p.WorldPosition = worldPosition;
parentRotation = p.WorldRotation = worldRotation;
ParticleArray[pIdx] = p;
}
}
//如果遍历到空的部分就直接跳过就好了
if (offset >= curHeadInfo.ParticleCount)
{
return;
}
int particleId = curHeadInfo.DataOffsetInGlobalArray + offset;
ParticleInfo particle = ParticleArray[particleId];
if (particle.ParentIndex >= 0)
{
float3 v = particle.TempWorldPosition - particle.TempPrevWorldPosition;
float3 rMove = curHeadInfo.ObjectMove * particle.Inert;
particle.TempPrevWorldPosition = particle.TempWorldPosition + rMove;
float damping = particle.Damping;
if (particle.IsCollide)
{
damping += particle.Friction;
if (damping > 1)
{
damping = 1;
}
particle.IsCollide = false;
}
particle.TempWorldPosition += v * (1 - damping) + curHeadInfo.FinalForce + rMove;
}
else
{
particle.TempPrevWorldPosition = particle.TempWorldPosition;
particle.TempWorldPosition = particle.WorldPosition;
}
ParticleArray[particleId] = particle;
}
public void Execute(int index)
{
//避免IndexOutOfRangeException:Index {0} is out of restricted IJobParallelFor range [{1}...{2] in ReadWriteBuffer.
if (index % MaxParticleLimit == 0)
{
return;
}
int headIndex = index / MaxParticleLimit;
HeadInfo curHeadInfo = HeadArray[headIndex];
//遍历到那些空的Particle就不用再计算了
int offset = index % MaxParticleLimit;
if (offset >= curHeadInfo.ParticleCount)
{
return;
}
int particleId = curHeadInfo.DataOffsetInGlobalArray + offset;
ParticleInfo particleInfo = ParticleArray[particleId];
int parentParticleIndex = curHeadInfo.DataOffsetInGlobalArray + particleInfo.ParentIndex;
ParticleInfo parentParticleInfo = ParticleArray[parentParticleIndex];
float3 pos = particleInfo.WorldPosition;
float3 parentPos = parentParticleInfo.WorldPosition;
//TODO:尾节点的长度计算方法需要用math修改
Matrix4x4 m = float4x4.TRS(parentParticleInfo.TempWorldPosition, parentParticleInfo.WorldRotation,
particleInfo.ParentScale);
float restLen = !particleInfo.IsEndBone
? math.distance(parentPos, pos)
: m.MultiplyVector(particleInfo.EndOffset).magnitude;
float stiffness = math.lerp(1.0f, particleInfo.Stiffness, curHeadInfo.Weight);
if (stiffness > 0 || particleInfo.Elasticity > 0)
{
float4x4 em0 = float4x4.TRS(parentParticleInfo.TempWorldPosition, parentParticleInfo.WorldRotation,
particleInfo.ParentScale);
float3 restPos = math.mul(em0, new float4(particleInfo.LocalPosition.xyz, 1)).xyz;
float3 d = restPos - particleInfo.TempWorldPosition;
particleInfo.TempWorldPosition += d * particleInfo.Elasticity;
if (stiffness > 0)
{
d = restPos - particleInfo.TempWorldPosition;
float len = math.length(d);
float maxLen = restLen * (1 - stiffness) * 2;
if (len > maxLen)
{
particleInfo.TempWorldPosition += d * ((len - maxLen) / len);
}
}
}
// //与指定的非全局碰撞器进行计算，会过滤掉挂载的全局碰撞器防止重复计算
// NativeMultiHashMap<int, int>.Enumerator enumerator = BoneColliderMatchMap.GetValuesForKey(headIndex);
// while (enumerator.MoveNext())
// {
// if (ColliderArray[enumerator.Current].IsGlobal) continue;
// particleInfo.IsCollide =
// DynamicBoneCollider.HandleCollision(ColliderArray[enumerator.Current],
// ref particleInfo.TempWorldPosition,
// in particleInfo.Radius);
// }
//
// //与所有的全局碰撞器进行计算
// for (int i = 0; i < ColliderArray.Length; i++)
// {
// if (!ColliderArray[i].IsGlobal) continue;
// particleInfo.IsCollide =
// DynamicBoneCollider.HandleCollision(ColliderArray[i],
// ref particleInfo.TempWorldPosition,
// in particleInfo.Radius);
// }
// particleInfo.WorldPosition = particleInfo.TempWorldPosition;
float3 dd = parentParticleInfo.TempWorldPosition - particleInfo.TempWorldPosition;
float leng = math.length(dd);
if (leng > 0)
{
particleInfo.TempWorldPosition += dd * ((leng - restLen) / leng);
}
ParticleArray[particleId] = particleInfo;
}