public void Execute()
{
for (int index = 0; index < PointCount; ++index)
{
//so everything above this point wants to be factored out
float randomSample = Rand.NextFloat(TotalAccum);
int triIndex = -1;
for (int i = 0; i < CumSizes.Length; i++)
{
if (randomSample <= CumSizes[i])
{
triIndex = i;
break;
}
}
int vertIndex0 = Triangles[triIndex * 3 + 0];
int vertIndex1 = Triangles[triIndex * 3 + 1];
int vertIndex2 = Triangles[triIndex * 3 + 2];
float3 posA = Vertices[vertIndex0];
float3 posB = Vertices[vertIndex1];
float3 posC = Vertices[vertIndex2];
float3 normalA = Normals[vertIndex0];
float3 normalB = Normals[vertIndex1];
float3 normalC = Normals[vertIndex2];
float2 uvA = Uvs[vertIndex0];
float2 uvB = Uvs[vertIndex1];
float2 uvC = Uvs[vertIndex2];
//generate random barycentric coordinates
float r = Rand.NextFloat();
float s = Rand.NextFloat();
if (r + s >= 1)
{
r = 1 - r;
s = 1 - s;
}
//and then turn them back to a Vector3
float3 normalSample;
float3 posSample = posA + r * (posB - posA) + s * (posC - posA);
float2 uvSample = uvA + r * (uvB - uvA) + s * (uvC - uvA);
// Use normal map instead hurray
if (math.all(NormalTex.Size > 0))
{
normalSample = NormalTex.Get(uvSample);
}
else
{
normalSample = normalA + r * (normalB - normalA) + s * (normalC - normalA);
}
posSample += Rand.NextGaussianSphere(NoiseLevel);
MeshPoint point;
point.Position = posSample;
point.Normal = normalSample;
point.Albedo = Albedo.Get(uvSample);
MeshPoints[index] = point;
}
}
