public CellVertInfo(HexXY coords)
{
this.Coords = coords;
WallVertices = new WallVerticesInfo[6];
for (int i = 0; i < 6; i++)
{
WallVertices[i] = new WallVerticesInfo();
}
}
public void GenerateWalls(MeshData wallMesh)
{
int nextIdx = 0;
int cw = patchSize + 1;
int ch = 2 * patchSize / 3 + 1;
for (int i = 0; i < ch; i++)
{
for (int j = 0; j < cw; j++)
{
CellVertInfo cvi = cellVertInfos[i * cw + j];
if (cvi.WallCount > 1)
{
for (int k = 0; k < 6; k++)
{
WallVerticesInfo wis = cvi.WallVertices[k];
if (wis.High.Count < 2)
{
continue;
}
for (int l = 0; l < wis.High.Count; l++)
{
//Verts
Vector3 highVert = wis.High[l];
Vector3 lowVert = wis.Low[l];
wallMesh.vertices.Add(highVert);
wallMesh.vertices.Add(lowVert);
//UVs
Vector2Int gridCoords = wis.GridCoords[l];
gridCoords.x += patchOffsetX * patchSize * subDivs;
gridCoords.y += patchOffsetY * patchSize * subDivs;
float u = WallUForGridCoords(gridCoords);
wallMesh.uvs.Add(new Vector2(u, 1));
wallMesh.uvs.Add(new Vector2(u, 0));
//Normals
//TODO: just neigbours for now, can smooth later if needed
Vector3 highNeigh;
if (l == 0)
{
highNeigh = wis.High[l + 1];
}
else
{
highNeigh = wis.High[l - 1];
}
Vector3 normal = Vector3.Cross(highNeigh - highVert, lowVert - highVert);
if (l > 0)
{
normal = -normal;
}
if (!(k >= 1 && k <= 3))
{
normal = -normal;
}
normal = normal.normalized;
wallMesh.normals.Add(normal);
wallMesh.normals.Add(normal);
}
for (int l = 0; l < wis.High.Count - 1; l++)
{
//Cut 0,0 outermost walls (duplicate walls in different patches cause z-fighting
Vector2Int gridCoords0 = wis.GridCoords[l];
Vector2Int gridCoords1 = wis.GridCoords[l + 1];
if ((gridCoords0.x == 0 && gridCoords1.x == 0) || (gridCoords0.y == 0 && gridCoords1.y == 0))
{
nextIdx += 2;
continue;
}
//Different winding order due to wall vertices
//filling order in main mesh generation above
if (k >= 1 && k <= 3)
{
wallMesh.triangles.Add(nextIdx);
wallMesh.triangles.Add(nextIdx + 3);
wallMesh.triangles.Add(nextIdx + 1);
wallMesh.triangles.Add(nextIdx);
wallMesh.triangles.Add(nextIdx + 2);
wallMesh.triangles.Add(nextIdx + 3);
}
else
{
wallMesh.triangles.Add(nextIdx);
wallMesh.triangles.Add(nextIdx + 1);
wallMesh.triangles.Add(nextIdx + 3);
wallMesh.triangles.Add(nextIdx);
wallMesh.triangles.Add(nextIdx + 3);
wallMesh.triangles.Add(nextIdx + 2);
}
nextIdx += 2;
}
nextIdx = wallMesh.vertices.Count;
}
}
}
}
}
