public Mesh GenerateMesh(Building building, CityMap map)
{
var factory = new Mesh.Factory();
var plan = _planGenerator.Generate(building.Pos + new Vector2(0.5f, 0.5f), building.Type.Size);
plan.NumFloors = _rnd.Next(1, 3);
UpdateHeights(plan, map.HeightMap);
_wallGenerator.CreateWalls(factory, plan);
_roofGenerator.CreateRoof(factory, plan);
return(factory.ToMesh());
}
internal Mesh ToMesh()
{
var factory = new Mesh.Factory();
for (var x = 0; x <= _sizeX; x++)
{
for (var y = 0; y <= _sizeY; y++)
{
factory.Vertices.Add(new Mesh.Vertex {
Pos = new Vector3(x, Height[x, y], y),
TexCoords = new Vector2(x * TexScale, y * TexScale),
Normal = GetNormal(x, y)
});
}
}
for (var x = 0; x < _sizeX; x++)
{
for (var y = 0; y < _sizeY; y++)
{
var v00 = x * Height.GetLength(1) + y;
var v01 = v00 + 1;
var v10 = v00 + Height.GetLength(1);
var v11 = v10 + 1;
var lenV00ToV11Sq = (factory.Vertices[v00].Pos - factory.Vertices[v11].Pos).LengthSquared;
var lenV01ToV10Sq = (factory.Vertices[v01].Pos - factory.Vertices[v10].Pos).LengthSquared;
if (lenV00ToV11Sq < lenV01ToV10Sq)
{
factory.Faces.Add(new Mesh.Face(v00, v01, v11));
factory.Faces.Add(new Mesh.Face(v00, v11, v10));
}
else
{
factory.Faces.Add(new Mesh.Face(v00, v01, v10));
factory.Faces.Add(new Mesh.Face(v01, v11, v10));
}
}
}
return(factory.ToMesh());
}