public static Vector3[] GetIDsAndWeights(int seed, float[] triAreas, int[] triangles, Vector3[] vertices)
{
float randomVal = getRandomFloatFromSeed(seed * 20);
int tri0 = 3 * getTri(randomVal, triAreas);
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triangles[tri0];
tri1 = triangles[tri1];
tri2 = triangles[tri2];
Vector3 pos = GetRandomPointInTriangle(seed, vertices[tri0], vertices[tri1], vertices[tri2]);
float a0 = HelperFunctions.AreaOfTriangle(pos, vertices[tri1], vertices[tri2]);
float a1 = HelperFunctions.AreaOfTriangle(pos, vertices[tri0], vertices[tri2]);
float a2 = HelperFunctions.AreaOfTriangle(pos, vertices[tri0], vertices[tri1]);
float aTotal = a0 + a1 + a2;
float p0 = a0 / aTotal;
float p1 = a1 / aTotal;
float p2 = a2 / aTotal;
return(new [] { new Vector3(tri0, tri1, tri2), new Vector3(p0, p1, p2) });
}
public static float[] GetTriAreas(int[] triangles, Vector3[] vertices)
{
float[] triAreas = new float[triangles.Length / 3];
float totalArea = 0;
for (int i = 0; i < triangles.Length / 3; i++)
{
int tri0 = i * 3;
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triangles[tri0];
tri1 = triangles[tri1];
tri2 = triangles[tri2];
float area = HelperFunctions.AreaOfTriangle(vertices[tri0], vertices[tri1], vertices[tri2]);
triAreas[i] = area;
totalArea += area;
}
for (int i = 0; i < triAreas.Length; i++)
{
triAreas[i] /= totalArea;
}
return(triAreas);
}
public static Point getVertInfo(int seed, float randomVal, float[] triAreas, int[] triValues, VertBuffer vertBuffer)
{
int tri0 = 3 * HelperFunctions.getTri(randomVal, triAreas);
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triValues[tri0];
tri1 = triValues[tri1];
tri2 = triValues[tri2];
Vector3 pos = HelperFunctions.GetRandomPointInTriangle(seed, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a0 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a1 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri2]);
float a2 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1]);
float aTotal = a0 + a1 + a2;
float p0 = a0 / aTotal;
float p1 = a1 / aTotal;
float p2 = a2 / aTotal;
Vector3 nor = vertBuffer.normals[tri0] * p0 + vertBuffer.normals[tri1] * p1 + vertBuffer.normals[tri2] * p2;
nor = nor.normalized;
// Vector3 color = tri0.color * p0 + tri1.color * p1 + tri2.color * p2;
Vector2 uv = vertBuffer.uvs[tri0] * p0 + vertBuffer.uvs[tri1] * p1 + vertBuffer.uvs[tri2] * p2;
Point p = new Point();
p.uv = uv;
p.nor = nor;
p.triWeights = new Vector3(p0, p1, p2);
p.triIDs = new Vector3(tri0, tri1, tri2);
return(p);
}
void CreateBuffers()
{
_buffer = new ComputeBuffer(fullVertCount, vertStructSize * sizeof(float));
values = new float[fullVertCount * vertStructSize];
// Used for assigning to our buffer;
int index = 0;
triAreas = new float[triBuffer.values.Length / 3];
float totalArea = 0;
for (int i = 0; i < triBuffer.values.Length / 3; i++)
{
int tri0 = i * 3;
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triBuffer.values[tri0];
tri1 = triBuffer.values[tri1];
tri2 = triBuffer.values[tri2];
float area = HelperFunctions.AreaOfTriangle(vertBuffer.vertices[tri0], vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
triAreas[i] = area;
totalArea += area;
}
for (int i = 0; i < triAreas.Length; i++)
{
triAreas[i] /= totalArea;
}
for (int i = 0; i < fullVertCount; i++)
{
int id = i;
//print( index);
//print( inValues.Length );
int idInHair = id % numVertsPerHair;
int hairID = (int)Mathf.Floor((float)id / (float)numVertsPerHair);
// Resets using same hairID, so RandomPointInTriangle shoudl work
float randomVal = HelperFunctions.getRandomFloatFromSeed(hairID * 20);
int tri0 = 3 * HelperFunctions.getTri(randomVal, triAreas);
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triBuffer.values[tri0];
tri1 = triBuffer.values[tri1];
tri2 = triBuffer.values[tri2];
Vector3 pos = HelperFunctions.GetRandomPointInTriangle(hairID, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a0 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a1 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri2]);
float a2 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1]);
float aTotal = a0 + a1 + a2;
float p0 = a0 / aTotal;
float p1 = a1 / aTotal;
float p2 = a2 / aTotal;
Vector3 nor = vertBuffer.normals[tri0] * p0 + vertBuffer.normals[tri1] * p1 + vertBuffer.normals[tri2] * p2;
nor = nor.normalized;
// Vector3 tan = vertBuffer.tangents[tri0] * p0 + vertBuffer.tangents[tri1] * p1 + vertBuffer.tangents[tri2] * p2;
/// tan = tan.normalized;
/*float3 tang = tri0.tang * p0 + tri1.tang * p1 + tri2.tang * p2;
* float3 color = tri0.color * p0 + tri1.color * p1 + tri2.color * p2;
* float2 uv = tri0.uv * p0 + tri1.uv * p1 + tri2.uv * p2;*/
float idVal = (float)id / (float)fullVertCount;
float uvX = (float)idInHair / (float)numVertsPerHair;
float uvY = (float)hairID / (float)totalHairs;
int xID = hairID % 180;
int zID = (int)Mathf.Floor((float)hairID / (float)180);
float xPos = (float)xID / 180;
float zPos = (float)zID / 180;
Vector3 fPos = pos + nor * hairLength * uvX;
// pos
values[index++] = fPos.x;
values[index++] = fPos.y;
values[index++] = fPos.z;
// oPos
values[index++] = fPos.x;
values[index++] = fPos.y;
values[index++] = fPos.z;
//vel
values[index++] = 0;
values[index++] = 0;
values[index++] = 0;
// nor
values[index++] = nor.x;
values[index++] = nor.y;
values[index++] = nor.z;
// uv
values[index++] = uvX;
values[index++] = uvY;
// debug
values[index++] = 1;
values[index++] = 1;
values[index++] = 1;
// triIDs
values[index++] = tri0;
values[index++] = tri1;
values[index++] = tri2;
// triWeights
values[index++] = p0;
values[index++] = p1;
values[index++] = p2;
}
_buffer.SetData(values);
}
void CreateBuffers()
{
_buffer = new ComputeBuffer(numberMeshes, BasisStructSize * sizeof(float));
values = new float[numberMeshes * BasisStructSize];
triAreas = new float[triBuffer.triangles.Length / 3];
// Used for assigning to our buffer;
int index = 0;
// print( numberMeshes );
// print( values.Length );
float totalArea = 0;
for (int i = 0; i < triBuffer.triangles.Length / 3; i++)
{
int tri0 = i * 3;
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triBuffer.triangles[tri0];
tri1 = triBuffer.triangles[tri1];
tri2 = triBuffer.triangles[tri2];
float area = HelperFunctions.AreaOfTriangle(vertBuffer.vertices[tri0], vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
triAreas[i] = area;
totalArea += area;
}
for (int i = 0; i < triAreas.Length; i++)
{
triAreas[i] /= totalArea;
}
for (int i = 0; i < numberMeshes; i++)
{
int id = i;
float randomVal = Random.value;
int tri0 = 3 * HelperFunctions.getTri(randomVal, triAreas);
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = triBuffer.triangles[tri0];
tri1 = triBuffer.triangles[tri1];
tri2 = triBuffer.triangles[tri2];
Vector3 pos = HelperFunctions.GetRandomPointInTriangle(id, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a0 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri1], vertBuffer.vertices[tri2]);
float a1 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri2]);
float a2 = HelperFunctions.AreaOfTriangle(pos, vertBuffer.vertices[tri0], vertBuffer.vertices[tri1]);
float aTotal = a0 + a1 + a2;
float p0 = a0 / aTotal;
float p1 = a1 / aTotal;
float p2 = a2 / aTotal;
Vector3 nor = vertBuffer.normals[tri0] * p0 + vertBuffer.normals[tri1] * p1 + vertBuffer.normals[tri2] * p2;
nor = nor.normalized;
// Vector3 color = tri0.color * p0 + tri1.color * p1 + tri2.color * p2;
Vector2 uv = vertBuffer.uvs[tri0] * p0 + vertBuffer.uvs[tri1] * p1 + vertBuffer.uvs[tri2] * p2;
Vector3 left = Vector3.Cross(nor, Vector3.up);
left.Normalize();
Vector3 forward = Vector3.Cross(left, nor);
// print( id );
values[index++] = id;
//transform
for (int j = 0; j < 16; j++)
{
values[index++] = 0;
}
// uv
values[index++] = uv.x;
values[index++] = uv.y;
// triIDs
values[index++] = tri0;
values[index++] = tri1;
values[index++] = tri2;
// triWeights
values[index++] = p0;
values[index++] = p1;
values[index++] = p2;
// debug
values[index++] = 1;
values[index++] = 0;
values[index++] = 0;
}
_buffer.SetData(values);
}
// Use this for initialization
void Start()
{
physicsKernel = physics.FindKernel("CSMain");
skinningKernel = skinning.FindKernel("CSMain");
skinningKernel = skinning.FindKernel("CSMain");
transformKernel = transform.FindKernel("CSMain");
physicsKernel = physics.FindKernel("CSMain");
constraintKernel = constraint.FindKernel("CSMain");
numberOfBonesPerLimb = boneBuffer.boneCount;
numberOfPointsPerLimb = numberOfBonesPerLimb + 1;
print(vertBuffer.vertCount);
totalNumberBones = numberOfBonesPerLimb * numberOfLimbs;
totalNumberVerts = vertBuffer.vertCount * numberOfLimbs;
totalNumberPoints = (numberOfPointsPerLimb) * numberOfLimbs;
print(totalNumberVerts);
print(totalNumberBones);
fullPointBuffer = new ComputeBuffer(totalNumberPoints, pointStructSize * sizeof(float));
fullBoneBuffer = new ComputeBuffer(totalNumberBones, boneStructSize * sizeof(float));
fullVertBuffer = new ComputeBuffer(totalNumberVerts, vertBuffer.structSize * sizeof(float));
boneValues = new float[totalNumberBones * boneStructSize];
vertValues = new float[totalNumberVerts * vertBuffer.structSize];
pointValues = new float[totalNumberPoints * pointStructSize];
int index = 0;
Vector3 basePosition;
Vector3 fPos;
for (int i = 0; i < numberOfLimbs; i++)
{
// Resets using same hairID, so RandomPointInTriangle shoudl work
float randomVal = HelperFunctions.getRandomFloatFromSeed(i * 20);
int tri0 = (int)(randomVal * (float)(baseTriBuffer.triangles.Length / 3)) * 3;
//int tri0 = (int)(randomVal * 1000 + 1000 ) * 3;
int tri1 = tri0 + 1;
int tri2 = tri0 + 2;
tri0 = baseTriBuffer.triangles[tri0];
tri1 = baseTriBuffer.triangles[tri1];
tri2 = baseTriBuffer.triangles[tri2];
Vector3 pos = HelperFunctions.GetRandomPointInTriangle(i, baseVertBuffer.vertices[tri0], baseVertBuffer.vertices[tri1], baseVertBuffer.vertices[tri2]);
float a0 = HelperFunctions.AreaOfTriangle(pos, baseVertBuffer.vertices[tri1], baseVertBuffer.vertices[tri2]);
float a1 = HelperFunctions.AreaOfTriangle(pos, baseVertBuffer.vertices[tri0], baseVertBuffer.vertices[tri2]);
float a2 = HelperFunctions.AreaOfTriangle(pos, baseVertBuffer.vertices[tri0], baseVertBuffer.vertices[tri1]);
float aTotal = a0 + a1 + a2;
float p0 = a0 / aTotal;
float p1 = a1 / aTotal;
float p2 = a2 / aTotal;
Vector3 nor = baseVertBuffer.normals[tri0] * p0 + baseVertBuffer.normals[tri1] * p1 + baseVertBuffer.normals[tri2] * p2;
nor = nor.normalized;
basePosition = baseTransform.TransformPoint(pos);//new Vector3( i * .1f, 0 , 0);
for (int j = 0; j < numberOfBonesPerLimb; j++)
{
fPos = boneBuffer.bones[j].transform.position + basePosition;
pointValues[index++] = 1;
pointValues[index++] = fPos.x;
pointValues[index++] = fPos.y;
pointValues[index++] = fPos.z;
pointValues[index++] = fPos.x;
pointValues[index++] = fPos.y;
pointValues[index++] = fPos.z;
pointValues[index++] = nor.x;
pointValues[index++] = nor.y;
pointValues[index++] = nor.z;
pointValues[index++] = (float)i / (float)numberOfLimbs;
pointValues[index++] = (float)j / (float)numberOfBonesPerLimb;
pointValues[index++] = 0;
pointValues[index++] = 1;
pointValues[index++] = 0;
}
fPos = boneBuffer.bones[numberOfBonesPerLimb - 1].transform.position + basePosition + Vector3.up * .1f;
pointValues[index++] = 1;
pointValues[index++] = fPos.x;
pointValues[index++] = fPos.y;
pointValues[index++] = fPos.z;
pointValues[index++] = fPos.x;
pointValues[index++] = fPos.y;
pointValues[index++] = fPos.z;
pointValues[index++] = 0;
pointValues[index++] = 1;
pointValues[index++] = 0;
pointValues[index++] = (float)i / (float)numberOfLimbs;
pointValues[index++] = 1;
pointValues[index++] = 0;
pointValues[index++] = 1;
pointValues[index++] = 0;
}
fullPointBuffer.SetData(pointValues);
index = 0;
for (int i = 0; i < numberOfLimbs; i++)
{
float rot = 360 * Random.value;
for (int j = 0; j < numberOfBonesPerLimb; j++)
{
boneValues[index++] = i;
boneValues[index++] = j;
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[0, 0];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[1, 0];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[2, 0];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[3, 0];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[0, 1];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[1, 1];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[2, 1];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[3, 1];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[0, 2];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[1, 2];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[2, 2];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[3, 2];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[0, 3];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[1, 3];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[2, 3];
boneValues[index++] = boneBuffer.bones[j].transform.localToWorldMatrix[3, 3];
var rotation = Matrix4x4.Rotate(boneBuffer.bones[j].rotation);
var quat = QuaternionFromMatrix(boneBuffer.bones[j].transform.localToWorldMatrix);
//undo rotations of blender
var tmpMat = Matrix4x4.Rotate(quat) * boneBuffer.bindPoses[j];
//adding random y rotation!
tmpMat = Matrix4x4.Rotate(Quaternion.AngleAxis(rot, Vector3.up)) * tmpMat;
boneValues[index++] = tmpMat[0, 0];
boneValues[index++] = tmpMat[1, 0];
boneValues[index++] = tmpMat[2, 0];
boneValues[index++] = tmpMat[3, 0];
boneValues[index++] = tmpMat[0, 1];
boneValues[index++] = tmpMat[1, 1];
boneValues[index++] = tmpMat[2, 1];
boneValues[index++] = tmpMat[3, 1];
boneValues[index++] = tmpMat[0, 2];
boneValues[index++] = tmpMat[1, 2];
boneValues[index++] = tmpMat[2, 2];
boneValues[index++] = tmpMat[3, 2];
boneValues[index++] = tmpMat[0, 3];
boneValues[index++] = tmpMat[1, 3];
boneValues[index++] = tmpMat[2, 3];
boneValues[index++] = tmpMat[3, 3];
}
}
fullBoneBuffer.SetData(boneValues);
index = 0;
for (int j = 0; j < numberOfLimbs; j++)
{
for (int i = 0; i < vertBuffer.vertCount; i++)
{
// used
vertValues[index++] = j;
// positions
vertValues[index++] = vertBuffer.vertices[i].x * .99f;
vertValues[index++] = vertBuffer.vertices[i].y * .99f;
vertValues[index++] = vertBuffer.vertices[i].z * .99f;
// vel
vertValues[index++] = 0;
vertValues[index++] = 0;
vertValues[index++] = 0;
// normals
vertValues[index++] = vertBuffer.normals[i].x;
vertValues[index++] = vertBuffer.normals[i].y;
vertValues[index++] = vertBuffer.normals[i].z;
// uvs
vertValues[index++] = vertBuffer.uvs[i].x;
vertValues[index++] = vertBuffer.uvs[i].y;
// target pos
vertValues[index++] = vertBuffer.vertices[i].x;
vertValues[index++] = vertBuffer.vertices[i].y;
vertValues[index++] = vertBuffer.vertices[i].z;
// bindPositions
vertValues[index++] = vertBuffer.vertices[i].x;
vertValues[index++] = vertBuffer.vertices[i].y;
vertValues[index++] = vertBuffer.vertices[i].z;
// bindNor
vertValues[index++] = vertBuffer.normals[i].x;
vertValues[index++] = vertBuffer.normals[i].y;
vertValues[index++] = vertBuffer.normals[i].z;
// bone weights
vertValues[index++] = vertBuffer.weights[i].weight0;
vertValues[index++] = vertBuffer.weights[i].weight1;
vertValues[index++] = vertBuffer.weights[i].weight2;
vertValues[index++] = vertBuffer.weights[i].weight3;
// bone indices
vertValues[index++] = vertBuffer.weights[i].boneIndex0;
vertValues[index++] = vertBuffer.weights[i].boneIndex1;
vertValues[index++] = vertBuffer.weights[i].boneIndex2;
vertValues[index++] = vertBuffer.weights[i].boneIndex3;
// Debug
vertValues[index++] = 1;
vertValues[index++] = 0;
vertValues[index++] = 0;
}
}
fullVertBuffer.SetData(vertValues);
transformGroups = ((totalNumberBones) + (numThreads - 1)) / numThreads;
constraintGroups = ((totalNumberPoints) + (numThreads - 1)) / numThreads;
skinningGroups = ((totalNumberVerts) + (numThreads - 1)) / numThreads;
physicsGroups = ((totalNumberPoints) + (numThreads - 1)) / numThreads;
}