void Generate()
{
vertices.Clear();
triangles.Clear();
int triangleNum = 0;
for (int x = 0; x < resolution; x++)
{
for (int y = 0; y < resolution; y++)
{
for (int z = 0; z < resolution; z++)
{
int caseNum = 0;
for (int i = 0; i < 8; i++)
{
float value = densityData[x + cubeVertOffsets[i].x, y + cubeVertOffsets[i].y, z + cubeVertOffsets[i].z];
if (invert ? value <surfaceLevel : value> surfaceLevel)
{
caseNum += (int)Mathf.Pow(2, i);
}
}
int[] triangulationCase = triangulation[caseNum];
foreach (int edgeIndex in triangulationCase)
{
if (edgeIndex == -1)
{
break;
}
int indexA = cornerIndexAFromEdge[edgeIndex];
int indexB = cornerIndexBFromEdge[edgeIndex];
if (smooth)
{
Int3 v3IndexA = new Int3(x, y, z) + cubeVertOffsets[indexA];
Int3 v3IndexB = new Int3(x, y, z) + cubeVertOffsets[indexB];
float densityA = densityData[v3IndexA.x, v3IndexA.y, v3IndexA.z];
float densityB = densityData[v3IndexB.x, v3IndexB.y, v3IndexB.z];
float lerp = (surfaceLevel - densityB) / (densityA - densityB);
Vector3 vertPos = Vector3.Lerp(v3IndexB.ToV3(), v3IndexA.ToV3(), lerp);
vertices.Add(vertPos);
triangles.Add(triangleNum++);
}
else
{
Vector3 vertA = cubeVertOffsets[indexA].ToV3();
Vector3 vertB = cubeVertOffsets[indexB].ToV3();
Vector3 vertPos = (vertA + vertB) / 2;
vertices.Add(new Vector3(x, y, z) + vertPos);
triangles.Add(triangleNum++);
}
}
}
}
}
}