void AddCube(MeshDesc meshDesc, CubeDesc desc, Vector3 position)
{
int positionsStartIndex = meshDesc.positions.Count;
int normalsStartIndex = meshDesc.normals.Count;
int indicesStartIndex = meshDesc.indices.Count;
meshDesc.positions.AddRange(desc.positions);
meshDesc.normals.AddRange(desc.normals);
meshDesc.indices.AddRange(desc.indices);
for (int i = positionsStartIndex; i < meshDesc.positions.Count; ++i)
{
meshDesc.positions[i] += position;
}
for (int i = indicesStartIndex; i < meshDesc.indices.Count; ++i)
{
meshDesc.indices[i] += positionsStartIndex;
}
}
void FillMeshDesc(MeshDesc desc)
{
CubeDesc cubeDesc = new CubeDesc();
InitCubeDesc(cubeDesc);
Vector3 position = new Vector3();
for (int z = 0; z < size; ++z)
{
for (int y = 0; y < size; ++y)
{
for (int x = 0; x < size; ++x)
{
position.x = x * cubeSize;
position.y = y * cubeSize;
position.z = z * cubeSize;
AddCube(desc, cubeDesc, position);
}
}
}
}
void InitCubeDesc(CubeDesc desc)
{
Vector3 vertice_0 = new Vector3(-cubeSize * .5f, -cubeSize * .5f, cubeSize * .5f);
Vector3 vertice_1 = new Vector3(cubeSize * .5f, -cubeSize * .5f, cubeSize * .5f);
Vector3 vertice_2 = new Vector3(cubeSize * .5f, -cubeSize * .5f, -cubeSize * .5f);
Vector3 vertice_3 = new Vector3(-cubeSize * .5f, -cubeSize * .5f, -cubeSize * .5f);
Vector3 vertice_4 = new Vector3(-cubeSize * .5f, cubeSize * .5f, cubeSize * .5f);
Vector3 vertice_5 = new Vector3(cubeSize * .5f, cubeSize * .5f, cubeSize * .5f);
Vector3 vertice_6 = new Vector3(cubeSize * .5f, cubeSize * .5f, -cubeSize * .5f);
Vector3 vertice_7 = new Vector3(-cubeSize * .5f, cubeSize * .5f, -cubeSize * .5f);
Vector3 up = Vector3.up;
Vector3 down = Vector3.down;
Vector3 front = Vector3.forward;
Vector3 back = Vector3.back;
Vector3 left = Vector3.left;
Vector3 right = Vector3.right;
desc.positions = new Vector3[]
{
// Bottom Polygon
vertice_0, vertice_1, vertice_2, vertice_0,
// Left Polygon
vertice_7, vertice_4, vertice_0, vertice_3,
// Front Polygon
vertice_4, vertice_5, vertice_1, vertice_0,
// Back Polygon
vertice_6, vertice_7, vertice_3, vertice_2,
// Right Polygon
vertice_5, vertice_6, vertice_2, vertice_1,
// Top Polygon
vertice_7, vertice_6, vertice_5, vertice_4
};
desc.normals = new Vector3[]
{
// Bottom Side Render
down, down, down, down,
// LEFT Side Render
left, left, left, left,
// FRONT Side Render
front, front, front, front,
// BACK Side Render
back, back, back, back,
// RIGTH Side Render
right, right, right, right,
// UP Side Render
up, up, up, up
};
desc.indices = new int[]
{
// Cube Bottom Side Triangles
3, 1, 0,
3, 2, 1,
// Cube Left Side Triangles
3 + 4 * 1, 1 + 4 * 1, 0 + 4 * 1,
3 + 4 * 1, 2 + 4 * 1, 1 + 4 * 1,
// Cube Front Side Triangles
3 + 4 * 2, 1 + 4 * 2, 0 + 4 * 2,
3 + 4 * 2, 2 + 4 * 2, 1 + 4 * 2,
// Cube Back Side Triangles
3 + 4 * 3, 1 + 4 * 3, 0 + 4 * 3,
3 + 4 * 3, 2 + 4 * 3, 1 + 4 * 3,
// Cube Rigth Side Triangles
3 + 4 * 4, 1 + 4 * 4, 0 + 4 * 4,
3 + 4 * 4, 2 + 4 * 4, 1 + 4 * 4,
// Cube Top Side Triangles
3 + 4 * 5, 1 + 4 * 5, 0 + 4 * 5,
3 + 4 * 5, 2 + 4 * 5, 1 + 4 * 5,
};
}
