public static void Polygonise(IDistanceField a_distanceField, DistanceField <Chunk.Voxel> .Cell[] a_cells, int a_x, int a_y, int a_z, float a_iso, List <Chunk.ChunkVertex> a_verticies)
{
int cubeIndex = 0;
for (int i = 0; i < 8; ++i)
{
if (a_cells[i].Distance < a_iso)
{
cubeIndex |= 1 << i;
}
}
if (EdgeTable[cubeIndex] == 0)
{
return;
}
Chunk.ChunkVertex[] vertList = VertexList(a_distanceField, a_cells, a_x, a_y, a_z, a_iso, cubeIndex);
for (int i = 0; TriTable[cubeIndex][i] != -1; i += 3)
{
a_verticies.Add(vertList[TriTable[cubeIndex][i + 0]]);
a_verticies.Add(vertList[TriTable[cubeIndex][i + 1]]);
a_verticies.Add(vertList[TriTable[cubeIndex][i + 2]]);
}
}
public DistanceFieldCollider(IDistanceField a_distanceField, PhysicsEngine a_engine)
{
m_distanceField = a_distanceField;
m_engine = a_engine;
m_engine.InputQueue.Enqueue(this);
}
private static Chunk.ChunkVertex[] VertexList(IDistanceField a_distanceField, DistanceField <Chunk.Voxel> .Cell[] a_cells, int a_x, int a_y, int a_z, float a_iso, int a_cubeIndex)
{
Chunk.ChunkVertex[] vertList = new Chunk.ChunkVertex[12];
if ((EdgeTable[a_cubeIndex] & 1) != 0)
{
vertList[0].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[0].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[1].Distance),
a_iso
), 1.0f);
vertList[0].Color = a_cells[0].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 2) != 0)
{
vertList[1].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[1].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[2].Distance),
a_iso
), 1.0f);
vertList[1].Color = a_cells[1].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 4) != 0)
{
vertList[2].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[2].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[3].Distance),
a_iso
), 1.0f);
vertList[2].Color = a_cells[3].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 8) != 0)
{
vertList[3].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[3].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[0].Distance),
a_iso
), 1.0f);
vertList[3].Color = a_cells[0].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 16) != 0)
{
vertList[4].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[4].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[5].Distance),
a_iso
), 1.0f);
vertList[4].Color = a_cells[4].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 32) != 0)
{
vertList[5].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[5].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[6].Distance),
a_iso
), 1.0f);
vertList[5].Color = a_cells[5].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 64) != 0)
{
vertList[6].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[6].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[7].Distance),
a_iso
), 1.0f);
vertList[6].Color = a_cells[7].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 128) != 0)
{
vertList[7].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[7].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[4].Distance),
a_iso
), 1.0f);
vertList[7].Color = a_cells[4].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 256) != 0)
{
vertList[8].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[0].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[4].Distance),
a_iso
), 1.0f);
vertList[8].Color = a_cells[0].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 512) != 0)
{
vertList[9].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[1].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 0) * a_distanceField.Spacing,
a_cells[5].Distance),
a_iso
), 1.0f);
vertList[9].Color = a_cells[1].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 1024) != 0)
{
vertList[10].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[2].Distance),
new Vector4((a_x + 1) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[6].Distance),
a_iso
), 1.0f);
vertList[10].Color = a_cells[2].Data.UColor;
}
if ((EdgeTable[a_cubeIndex] & 2048) != 0)
{
vertList[11].Position = new Vector4(LinearInterp
(
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 0) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[3].Distance),
new Vector4((a_x + 0) * a_distanceField.Spacing,
(a_y + 1) * a_distanceField.Spacing,
(a_z + 1) * a_distanceField.Spacing,
a_cells[7].Distance),
a_iso
), 1.0f);
vertList[11].Color = a_cells[3].Data.UColor;
}
return(vertList);
}
