public void GenerateMesh(VoxelMesh voxelMesh, MeshFilter filter, MeshCollider collider = null)
{
if (settings == null)
{
return;
}
MeshData meshData = new MeshData();
meshData.useRenderDataForCol = collider != null;
tileSize.x = 1f / voxelMesh.ColorPalette.colors.Count;
tileSize.y = 1f;
centerPos = new Vector3(voxelMesh.meshSize.x * settings.voxelSize.x * settings.pivot.x,
voxelMesh.meshSize.y * settings.voxelSize.y * settings.pivot.y,
voxelMesh.meshSize.z * settings.voxelSize.z * settings.pivot.z);
for (int x = 0; x < voxelMesh.meshSize.x; x++)
{
for (int y = 0; y < voxelMesh.meshSize.y; y++)
{
for (int z = 0; z < voxelMesh.meshSize.z; z++)
{
AddVoxelToMesh(new Vector3Int(x, y, z), voxelMesh, meshData);
}
}
}
filter.sharedMesh.Clear();
filter.sharedMesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
filter.sharedMesh.vertices = meshData.vertices.ToArray();
filter.sharedMesh.triangles = meshData.triangles.ToArray();
filter.sharedMesh.uv = meshData.uv.ToArray();
filter.sharedMesh.RecalculateNormals();
filter.sharedMesh.RecalculateTangents();
filter.sharedMesh.Optimize();
if (meshData.useRenderDataForCol)
{
collider.sharedMesh = null;
Mesh mesh = new Mesh();
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
mesh.vertices = meshData.colVertices.ToArray();
mesh.triangles = meshData.colTriangles.ToArray();
mesh.RecalculateNormals();
collider.sharedMesh = mesh;
}
}
void AddVoxelToMesh(Vector3Int posInt, VoxelMesh voxelMesh, MeshData meshData)
{
VoxelData voxel = voxelMesh.GetVoxel(posInt);
if (voxel == null)
{
return;
}
Vector3 pos = new Vector3(posInt.x * settings.voxelSize.x, posInt.y * settings.voxelSize.y, posInt.z * settings.voxelSize.z);
pos -= centerPos;
if (!voxel.IsVisible)
{
return;
}
VoxelData voxelUp = voxelMesh.GetVoxel(posInt.x, posInt.y + 1, posInt.z);
if (voxelUp == null || !voxelUp.IsVisible)
{
//UP
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
VoxelData voxelDown = voxelMesh.GetVoxel(posInt.x, posInt.y - 1, posInt.z);
if (voxelDown == null || !voxelDown.IsVisible)
{
//Down
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
VoxelData voxelFront = voxelMesh.GetVoxel(posInt.x, posInt.y, posInt.z + 1);
if (voxelFront == null || !voxelFront.IsVisible)
{
//Front
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
VoxelData voxelBack = voxelMesh.GetVoxel(posInt.x, posInt.y, posInt.z - 1);
if (voxelBack == null || !voxelBack.IsVisible)
{
//Back
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z));
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
VoxelData voxelRight = voxelMesh.GetVoxel(posInt.x + 1, posInt.y, posInt.z);
if (voxelRight == null || !voxelRight.IsVisible)
{
//Right
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x + settings.voxelSize.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
VoxelData voxelLeft = voxelMesh.GetVoxel(posInt.x - 1, posInt.y, posInt.z);
if (voxelLeft == null || !voxelLeft.IsVisible)
{
//Left
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z + settings.voxelSize.z));
meshData.AddVertex(new Vector3(pos.x, pos.y + settings.voxelSize.y, pos.z));
meshData.AddVertex(new Vector3(pos.x, pos.y, pos.z));
meshData.AddQuadTriangles();
SetUVsVoxel(voxel, meshData.uv);
}
}
