//Sets the color of the triangles inside x,y,z grid cell
public void SetColor(int x, int y, int z, Color32 color)
{
//if there are triangles in the cell
if (triangleSeparation[x, y, z] != null)
{
int numberOfTris = triangleSeparation[x, y, z].Count;
for (int p = 0; p < numberOfTris; p++)
{
MeshGridTriangle t = triangleSeparation[x, y, z].Dequeue();
t.triangleColor = color;
finalColors[t.v[0]] = color;
finalColors[t.v[1]] = color;
finalColors[t.v[2]] = color;
triangleSeparation[x, y, z].Enqueue(t);
}
m.SetColors(finalColors);
}
}
//Slices the triangle into three default , firstTris and secondTris
//Each slice can make a triangle and a quad that gets split into two triangles (firstTris and secondTris)
public void SliceByPlane(Vector3 planePoint, Vector3 planeNormal, MeshGridIndicator meshGridIndicator)
{
triangleSide = 0;
int[] sides = new int[3];
sides[0] = CalculatePointSideOfPlane(meshGridIndicator.finalVertices[v[0]], planePoint, planeNormal);
sides[1] = CalculatePointSideOfPlane(meshGridIndicator.finalVertices[v[1]], planePoint, planeNormal);
sides[2] = CalculatePointSideOfPlane(meshGridIndicator.finalVertices[v[2]], planePoint, planeNormal);
if (sides[0] == sides[1] && sides[0] == sides[2])
{
triangleSide = sides[0];
}
else if (sides[0] != sides[1] && sides[1] != sides[2] && sides[0] != sides[2])
{
int z = 0; int f = 1; int s = 2; int t;
if (sides[1] == -1)
{
z = 1; f = 2; s = 0;
}
if (sides[2] == -1)
{
z = 2; f = 0; s = 1;
}
meshGridIndicator.finalVertices.Add(LinePlaneIntersection(meshGridIndicator.finalVertices[v[f]], meshGridIndicator.finalVertices[v[s]], planePoint, planeNormal));
meshGridIndicator.finalNormals.Add((meshGridIndicator.finalNormals[v[f]] + meshGridIndicator.finalNormals[v[s]]) / 2);
meshGridIndicator.finalUvs.Add((meshGridIndicator.finalUvs[v[f]] + meshGridIndicator.finalUvs[v[s]]) / 2);
meshGridIndicator.finalColors.Add(meshGridIndicator.defaultColor);
t = meshGridIndicator.finalVertices.Count - 1;
int[] temp = new int[3] {
v[0], v[1], v[2]
};
v[0] = temp[z]; v[1] = temp[f]; v[2] = t;
AddNewTriangleVertex(meshGridIndicator, temp[z]);
AddNewTriangleVertex(meshGridIndicator, t);
firstTris = new MeshGridTriangle(temp[s], t + 1, t + 2, meshGridIndicator.defaultColor);
firstTris.triangleSide = sides[s];
triangleSide = sides[f];
}
else if (sides[0] == -1 || sides[1] == -1 || sides[2] == -1)
{
if (sides[0] == 1 || sides[1] == 1 || sides[2] == 1)
{
triangleSide = 1;
}
else
{
triangleSide = 0;
}
}
else
{
int z = 0; int f = 1; int s = 2; int t; int t2;
if (sides[1] == sides[2])
{
z = 0; f = 1; s = 2;
}
if (sides[0] == sides[2])
{
z = 1; f = 2; s = 0;
}
if (sides[1] == sides[0])
{
z = 2; f = 0; s = 1;
}
meshGridIndicator.finalVertices.Add(LinePlaneIntersection(meshGridIndicator.finalVertices[v[z]], meshGridIndicator.finalVertices[v[f]], planePoint, planeNormal));
t = meshGridIndicator.finalVertices.Count - 1;
meshGridIndicator.finalNormals.Add((meshGridIndicator.finalNormals[v[z]] + meshGridIndicator.finalNormals[v[f]]) / 2);
meshGridIndicator.finalUvs.Add((meshGridIndicator.finalUvs[v[z]] + meshGridIndicator.finalUvs[v[f]]) / 2);
meshGridIndicator.finalColors.Add(meshGridIndicator.defaultColor);
//second
meshGridIndicator.finalVertices.Add(LinePlaneIntersection(meshGridIndicator.finalVertices[v[s]], meshGridIndicator.finalVertices[v[z]], planePoint, planeNormal));
meshGridIndicator.finalNormals.Add((meshGridIndicator.finalNormals[v[s]] + meshGridIndicator.finalNormals[v[z]]) / 2);
meshGridIndicator.finalUvs.Add((meshGridIndicator.finalUvs[v[s]] + meshGridIndicator.finalUvs[v[z]]) / 2);
meshGridIndicator.finalColors.Add(meshGridIndicator.defaultColor);
int[] temp = new int[3] {
v[0], v[1], v[2]
};
AddNewTriangleVertex(meshGridIndicator, temp[s]);
AddNewTriangleVertex(meshGridIndicator, t);
firstTris = new MeshGridTriangle(temp[f], t + 2, t + 3, meshGridIndicator.defaultColor);
firstTris.triangleSide = sides[s];
AddNewTriangleVertex(meshGridIndicator, t);
AddNewTriangleVertex(meshGridIndicator, t + 1);
secondTris = new MeshGridTriangle(t + 4, temp[s], t + 5, meshGridIndicator.defaultColor);
secondTris.triangleSide = sides[s];
v[0] = temp[z]; v[1] = t; v[2] = t + 1;
triangleSide = sides[z];
}
}
//Generates the sliced mesh with triangles organized in 3d grid
public void MakeSeparation()
{
if (m == null)
{
m = new Mesh();
}
outside = null;
triangleSeparation = new Queue <MeshGridTriangle> [gridX.Length, gridY.Length, gridZ.Length];
triangleSeparation[0, 0, 0] = new Queue <MeshGridTriangle>();
int[] tris = mesh.triangles;
Vector3[] verts = mesh.vertices;
Vector3[] normals = mesh.normals;
Vector2[] uvs = mesh.uv;
finalVertices = new List <Vector3>();
finalNormals = new List <Vector3>();
finalUvs = new List <Vector2>();
finalColors = new List <Color32>();
finalTriangles = new List <int>();
//Convert mesh triangles into MeshGridTriangle triangle
for (int i = 0; i < tris.Length; i += 3)
{
triangleSeparation[0, 0, 0].Enqueue(new MeshGridTriangle(i, i + 1, i + 2, defaultColor));
finalVertices.Add(meshPosition + Quaternion.Euler(meshRotation) * Vector3.Scale(meshScale, verts[tris[i]]));
finalNormals.Add(Quaternion.Euler(meshRotation) * normals[tris[i]]);
finalUvs.Add(uvs[tris[i]]);
finalColors.Add(defaultColor);
//second
finalVertices.Add(meshPosition + Quaternion.Euler(meshRotation) * Vector3.Scale(meshScale, verts[tris[i + 1]]));
finalNormals.Add(Quaternion.Euler(meshRotation) * normals[tris[i + 1]]);
finalUvs.Add(uvs[tris[i + 1]]);
finalColors.Add(defaultColor);
//third
finalVertices.Add(meshPosition + Quaternion.Euler(meshRotation) * Vector3.Scale(meshScale, verts[tris[i + 2]]));
finalNormals.Add(Quaternion.Euler(meshRotation) * normals[tris[i + 2]]);
finalUvs.Add(uvs[tris[i + 2]]);
finalColors.Add(defaultColor);
}
//Seperate the triangles that are outside of the grid
SeperateTriangleZones(gridOffset, Vector3.left, ref triangleSeparation[0, 0, 0], ref outside);
SeperateTriangleZones(gridOffset, Vector3.down, ref triangleSeparation[0, 0, 0], ref outside);
SeperateTriangleZones(gridOffset, Vector3.back, ref triangleSeparation[0, 0, 0], ref outside);
Vector3 planePoint = gridOffset;
float distanceX = 0;
float distanceY = 0;
float distanceZ = 0;
//Split triangles into each cell
for (int i = 0; i < gridX.Length; i++)
{
distanceY = 0;
distanceX += gridX[i];
if (triangleSeparation[i, 0, 0] != null)
{
if (i != gridX.Length - 1)
{
SeperateTriangleZones(gridOffset + new Vector3(distanceX, 0, 0), Vector3.right, ref triangleSeparation[i, 0, 0], ref triangleSeparation[i + 1, 0, 0]);
}
else
{
SeperateTriangleZones(gridOffset + new Vector3(distanceX, 0, 0), Vector3.right, ref triangleSeparation[i, 0, 0], ref outside);
}
distanceY = 0;
for (int j = 0; j < gridY.Length; j++)
{
distanceY += gridY[j];
if (triangleSeparation[i, j, 0] != null)
{
if (j != gridY.Length - 1)
{
SeperateTriangleZones(gridOffset + new Vector3(0, distanceY, 0), Vector3.up, ref triangleSeparation[i, j, 0], ref triangleSeparation[i, j + 1, 0]);
}
else
{
SeperateTriangleZones(gridOffset + new Vector3(0, distanceY, 0), Vector3.up, ref triangleSeparation[i, j, 0], ref outside);
}
distanceZ = 0;
for (int k = 0; k < gridZ.Length; k++)
{
distanceZ += gridZ[k];
if (triangleSeparation[i, j, k] != null)
{
if (k != gridZ.Length - 1)
{
SeperateTriangleZones(gridOffset + new Vector3(0, 0, distanceZ), Vector3.forward, ref triangleSeparation[i, j, k], ref triangleSeparation[i, j, k + 1]);
}
else
{
SeperateTriangleZones(gridOffset + new Vector3(0, 0, distanceZ), Vector3.forward, ref triangleSeparation[i, j, k], ref outside);
}
}
}
}
}
}
}
//Set color of outside triangles
if (outside != null)
{
int numberOfTris = outside.Count;
for (int p = 0; p < numberOfTris; p++)
{
MeshGridTriangle t = outside.Dequeue();
t.triangleColor = outsideColor;
finalColors[t.v[0]] = outsideColor;
finalColors[t.v[1]] = outsideColor;
finalColors[t.v[2]] = outsideColor;
finalTriangles.Add(t.v[0]);
finalTriangles.Add(t.v[1]);
finalTriangles.Add(t.v[2]);
outside.Enqueue(t);
}
}
//Set color and triangles in each cell
for (int i = 0; i < gridX.Length; i++)
{
for (int j = 0; j < gridY.Length; j++)
{
for (int k = 0; k < gridZ.Length; k++)
{
if (triangleSeparation[i, j, k] != null)
{
int numberOfTris = triangleSeparation[i, j, k].Count;
for (int p = 0; p < numberOfTris; p++)
{
MeshGridTriangle t = triangleSeparation[i, j, k].Dequeue();
finalTriangles.Add(t.v[0]);
finalTriangles.Add(t.v[1]);
finalTriangles.Add(t.v[2]);
triangleSeparation[i, j, k].Enqueue(t);
}
}
}
}
}
//Set the mesh
m.Clear();
m.SetVertices(finalVertices);
m.SetUVs(0, finalUvs);
m.SetTriangles(finalTriangles, 0);
m.SetColors(finalColors);
m.RecalculateBounds();
m.RecalculateNormals();
m.SetNormals(finalNormals);
m.UploadMeshData(false);
GetComponent <MeshFilter>().mesh = m;
}
//Slices the mesh triangles into the next cell
private void SeperateTriangleZones(Vector3 planePoint, Vector3 planeNormal, ref Queue <MeshGridTriangle> mainZone, ref Queue <MeshGridTriangle> other)
{
int numberOfTris = mainZone.Count;
for (int j = 0; j < numberOfTris; j++)
{
MeshGridTriangle triangle = mainZone.Dequeue();
triangle.SliceByPlane(planePoint, planeNormal, this);
if (triangle.triangleSide != 0)
{
if (mainZone == null)
{
mainZone = new Queue <MeshGridTriangle>();
}
mainZone.Enqueue(triangle);
}
else
{
if (other == null)
{
other = new Queue <MeshGridTriangle>();
}
other.Enqueue(triangle);
}
if (triangle.firstTris != null)
{
if (triangle.firstTris.triangleSide != 0)
{
if (mainZone == null)
{
mainZone = new Queue <MeshGridTriangle>();
}
mainZone.Enqueue(triangle.firstTris); triangle.firstTris = null;
}
else
{
if (other == null)
{
other = new Queue <MeshGridTriangle>();
}
other.Enqueue(triangle.firstTris); triangle.firstTris = null;
}
}
if (triangle.secondTris != null)
{
if (triangle.secondTris.triangleSide != 0)
{
if (mainZone == null)
{
mainZone = new Queue <MeshGridTriangle>();
}
mainZone.Enqueue(triangle.secondTris); triangle.secondTris = null;
}
else
{
if (other == null)
{
other = new Queue <MeshGridTriangle>();
}
other.Enqueue(triangle.secondTris); triangle.secondTris = null;
}
}
}
}