void Start()
{
// Cache the particle system (make sure you have set enough particle count)
particles = GetComponent <PlaygroundParticlesC>();
// Create a new skinned world object
swo = PlaygroundC.SkinnedWorldObject(skinnedMeshTransform);
// Start emission routine
StartCoroutine(EmitOverAllVertices());
}
void Start () {
// Cache the particle system (make sure you have set enough particle count)
particles = GetComponent<PlaygroundParticlesC>();
// Create a new skinned world object
swo = PlaygroundC.SkinnedWorldObject(skinnedMeshTransform);
// Start emission routine
StartCoroutine(EmitOverAllVertices());
}
// Set position from Skinned Mesh World Object
public static void SetPosition (ref PlaygroundParticlesC playgroundParticles, ref SkinnedWorldObject particleStateWorldObject) {
if (playgroundParticles.skinnedWorldObject==null || playgroundParticles.skinnedWorldObject.mesh==null) {
Debug.Log("There is no skinned mesh assigned to "+playgroundParticles.particleSystemGameObject.name+"'s skinnedWorlObject.");
return;
}
Vector3[] vertices = particleStateWorldObject.mesh.vertices;
BoneWeight[] weights = particleStateWorldObject.mesh.boneWeights;
Matrix4x4[] bindposes = particleStateWorldObject.mesh.bindposes;
Matrix4x4[] boneMatrices = new Matrix4x4[particleStateWorldObject.renderer.bones.Length];
int i = 0;
for (; i<boneMatrices.Length; i++)
boneMatrices[i] = particleStateWorldObject.renderer.bones[i].localToWorldMatrix * bindposes[i];
Matrix4x4 vertexMatrix = new Matrix4x4();
for (i = 0; i<playgroundParticles.particleCache.particles.Length; i++) {
BoneWeight weight = weights[i];
Matrix4x4 m0 = boneMatrices[weight.boneIndex0];
Matrix4x4 m1 = boneMatrices[weight.boneIndex1];
Matrix4x4 m2 = boneMatrices[weight.boneIndex2];
Matrix4x4 m3 = boneMatrices[weight.boneIndex3];
for(int n=0;n<16;n++){
vertexMatrix[n] =
m0[n] * weight.weight0 +
m1[n] * weight.weight1 +
m2[n] * weight.weight2 +
m3[n] * weight.weight3;
}
playgroundParticles.particleCache.particles[i].position = vertexMatrix.MultiplyPoint3x4(vertices[i%vertices.Length])+GetOverflowOffset(ref playgroundParticles, i, vertices.Length);
}
}
// Get vertices from a skinned world object in a Vector3-array
public static void GetPosition (ref Vector3[] v3, ref Vector3[] norm, ref SkinnedWorldObject particleStateWorldObject) {
Vector3[] vertices = particleStateWorldObject.mesh.vertices;
norm = particleStateWorldObject.mesh.normals;
BoneWeight[] weights = particleStateWorldObject.mesh.boneWeights;
Matrix4x4[] bindPoses = particleStateWorldObject.mesh.bindposes;
Matrix4x4[] boneMatrices = new Matrix4x4[particleStateWorldObject.renderer.bones.Length];
if (v3.Length!=vertices.Length) v3 = new Vector3[vertices.Length];
int i = 0;
for (; i<boneMatrices.Length; i++)
boneMatrices[i] = particleStateWorldObject.renderer.bones[i].localToWorldMatrix * bindPoses[i];
Matrix4x4 vertexMatrix = new Matrix4x4();
for (i = 0; i<v3.Length; i++) {
BoneWeight weight = weights[i];
Matrix4x4 m0 = boneMatrices[weight.boneIndex0];
Matrix4x4 m1 = boneMatrices[weight.boneIndex1];
Matrix4x4 m2 = boneMatrices[weight.boneIndex2];
Matrix4x4 m3 = boneMatrices[weight.boneIndex3];
for(int n=0;n<16;n++){
vertexMatrix[n] =
m0[n] * weight.weight0 +
m1[n] * weight.weight1 +
m2[n] * weight.weight2 +
m3[n] * weight.weight3;
}
v3[i] = vertexMatrix.MultiplyPoint3x4(vertices[(i)%vertices.Length]);
}
}
// Lerp to a Skinned World Object
public static void Lerp (PlaygroundParticlesC playgroundParticles, SkinnedWorldObject particleStateWorldObject, float time) {
if(time<0) time = 0f;
Vector3[] vertices = particleStateWorldObject.mesh.vertices;
BoneWeight[] weights = particleStateWorldObject.mesh.boneWeights;
Matrix4x4[] boneMatrices = new Matrix4x4[particleStateWorldObject.renderer.bones.Length];
int i;
for (i = 0; i<boneMatrices.Length; i++)
boneMatrices[i] = particleStateWorldObject.renderer.bones[i].localToWorldMatrix * particleStateWorldObject.mesh.bindposes[i];
Matrix4x4 vertexMatrix = new Matrix4x4();
for (i = 0; i<playgroundParticles.particleCache.particles.Length; i++) {
BoneWeight weight = weights[i];
Matrix4x4 m0 = boneMatrices[weight.boneIndex0];
Matrix4x4 m1 = boneMatrices[weight.boneIndex1];
Matrix4x4 m2 = boneMatrices[weight.boneIndex2];
Matrix4x4 m3 = boneMatrices[weight.boneIndex3];
for(int n=0;n<16;n++){
vertexMatrix[n] =
m0[n] * weight.weight0 +
m1[n] * weight.weight1 +
m2[n] * weight.weight2 +
m3[n] * weight.weight3;
}
playgroundParticles.particleCache.particles[i].position = Vector3.Lerp(playgroundParticles.particleCache.particles[i].position, vertexMatrix.MultiplyPoint3x4(vertices[i%vertices.Length]), time);
}
}
// Create a new SkinnedWorldObject
public static SkinnedWorldObject NewSkinnedWorldObject (PlaygroundParticlesC playgroundParticles, Transform meshTransform) {
SkinnedWorldObject worldObject = new SkinnedWorldObject();
if (meshTransform.GetComponentInChildren<SkinnedMeshRenderer>()) {
worldObject.transform = meshTransform;
worldObject.gameObject = meshTransform.gameObject;
worldObject.rigidbody = meshTransform.rigidbody;
worldObject.renderer = meshTransform.GetComponentInChildren<SkinnedMeshRenderer>();
worldObject.mesh = worldObject.renderer.sharedMesh;
worldObject.vertexPositions = new Vector3[worldObject.mesh.vertexCount];
worldObject.normals = worldObject.mesh.normals;
worldObject.cachedId = worldObject.gameObject.GetInstanceID();
playgroundParticles.skinnedWorldObject = worldObject;
} else Debug.Log("Could not find a skinned mesh in "+meshTransform.name+".");
return worldObject;
}
// Get vertices and normals from a skinned world object in Vector3[] format (notice that the array is modified by reference)
public static void GetPosition (ref Vector3[] vertices, ref Vector3[] normals, ref SkinnedWorldObject particleStateWorldObject) {
PlaygroundParticlesC.GetPosition(ref vertices,ref normals,ref particleStateWorldObject);
}
// Set new mesh position from mesh world object state instantly
public static void SetPosition (ref PlaygroundParticlesC playgroundParticles, ref SkinnedWorldObject particleStateWorldObject) {
PlaygroundParticlesC.SetPosition(ref playgroundParticles,ref particleStateWorldObject);
}
// Linear interpolation to object in world space
public static void Lerp (PlaygroundParticlesC playgroundParticles, SkinnedWorldObject particleStateWorldObject, float time) {
PlaygroundParticlesC.Lerp(playgroundParticles,particleStateWorldObject,time);
}
