private void RebuildMesh()
{
if (Path == null)
{
return;
}
var bufferSize = DistanceFieldResolution * DistanceFieldResolution;
if (_sBufferA == null || _sBufferA.Length < bufferSize)
{
_sBufferA = new float[bufferSize];
_sBufferB = new float[bufferSize];
}
if (_sCubes == null)
{
_sCubes = new MarchingCubes();
}
else
{
_sCubes.Clear();
}
if (_sVertices == null)
{
_sVertices = new List <DistanceFieldSampler.Vertex>();
}
else
{
_sVertices.Clear();
}
Path.GetVertices(_sVertices);
_sCubes.Threshold = Threshold;
_sCubes.CubeSize = new Vector3(
CaptureVolume.x / DistanceFieldResolution,
CaptureVolume.y / VerticalResolution,
CaptureVolume.z / DistanceFieldResolution);
var origin = transform.position;
var size = new Vector2(CaptureVolume.x, CaptureVolume.z);
var last = _sBufferA;
var next = _sBufferB;
var values = new float[8];
DistanceFieldSampler.SampleDistanceField(_sVertices, origin, size, DistanceFieldResolution, last);
for (var yb = 1; yb < VerticalResolution; ++yb)
{
var ya = yb - 1;
var offset = new Vector3(0f, (float)yb / VerticalResolution, 0f);
DistanceFieldSampler.SampleDistanceField(_sVertices, origin + offset, size, DistanceFieldResolution, next);
for (var zb = 1; zb < DistanceFieldResolution; ++zb)
{
var za = zb - 1;
for (var xb = 1; xb < DistanceFieldResolution; ++xb)
{
var xa = xb - 1;
values[0] = last[xa + za * DistanceFieldResolution];
values[1] = last[xb + za * DistanceFieldResolution];
values[2] = next[xa + za * DistanceFieldResolution];
values[3] = next[xb + za * DistanceFieldResolution];
values[4] = last[xa + zb * DistanceFieldResolution];
values[5] = last[xb + zb * DistanceFieldResolution];
values[6] = next[xa + zb * DistanceFieldResolution];
values[7] = next[xb + zb * DistanceFieldResolution];
_sCubes.MoveToCube(xa, ya, za);
_sCubes.Write(values);
}
}
var temp = last;
last = next;
next = temp;
}
var meshFilter = this.GetComponent <MeshFilter>();
if (meshFilter.sharedMesh == null)
{
meshFilter.sharedMesh = new Mesh();
}
_sCubes.CopyToMesh(meshFilter.sharedMesh);
}