/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
GeometryParameters param = new GeometryParameters(
new Point3D(-50, -50, -200), new Point3D(20, 20, 1), TestVisibility, TestMaterial);
geom = new MathGeometry(this, param);
spriteFont = Content.Load <SpriteFont>("MathFont");
}
public MathGeometry(Game game, GeometryParameters parameters)
{
graphics = game.GraphicsDevice;
this.game = game;
this.parameters = parameters;
effect = game.Content.Load <Effect>("VoxelEffect");
materials = game.Content.Load <Texture2D>("materials");
if (!init)
{
Init(game.GraphicsDevice);
}
List <VoxelVertex> voxels = new List <VoxelVertex>();
for (int x = 0; x < parameters.Size.X; x++)
{
for (int y = 0; y < parameters.Size.Y; y++)
{
for (int z = 0; z < parameters.Size.Y; z++)
{
Point3D p = new Point3D(x, y, z);
if (!parameters.Visible(p))
{
continue;
}
int material = parameters.MaterialID(p);
VoxelVertex v = new VoxelVertex()
{
Position = p.ToVector3(),
MaterialID = material
};
voxels.Add(v);
}
}
}
instanceBuffer = new VertexBuffer(graphics, typeof(VoxelVertex), voxels.Count, BufferUsage.WriteOnly);
instanceBuffer.SetData(voxels.ToArray());
numInstances = voxels.Count;
}
public void AddGeometry(GeometryParameters parameters)
{
geometries.Add(new MathGeometry(Game, parameters));
}
public EvalResult Evaluate(String input)
{
String prelude =
"import clr\n" +
"clr.AddReference('Mathcraft')\n" +
"from Mathcraft import *\n" +
"clr.AddReference('System.Core')\n" +
"from System import Func\n";
input = prelude + input;
String suffix = "\n" +
"wrapper.visible_func = Func[Point3D,bool](visible)\n" +
"wrapper.material_func = Func[Point3D,int](material)\n";
if (input.Contains("def visible") && input.Contains("def material"))
{
input += suffix;
}
EvalResult result = new EvalResult();
Point3D size = new Point3D(20, 20, 20);
Point3D pos = new Point3D(-50, -50, -200);
Func <Point3D, bool> visFunc = null;
Func <Point3D, int> matFunc = null;
var scope = engine.CreateScope();
scope.SetVariable("wrapper", wrapper);
scope.SetVariable("pos", pos);
scope.SetVariable("size", size);
scope.SetVariable("visibility", visFunc);
scope.SetVariable("material", matFunc);
ScriptSource source = engine.CreateScriptSourceFromString(input, SourceCodeKind.Statements);
CompiledCode compiled = null;
wrapper.material_func = null;
wrapper.visible_func = null;
try
{
compiled = source.Compile();
}
catch (Exception ex)
{
result.Success = false;
result.Message = ex.Message;
return(result);
}
// Executes in the scope of Python
compiled.Execute(scope);
bool gotPos = scope.TryGetVariable <Point3D>("pos", out pos);
bool gotSize = scope.TryGetVariable <Point3D>("size", out size);
if (wrapper.visible_func != null && wrapper.material_func != null)
{
var param = new GeometryParameters(pos, size,
wrapper.visible_func, wrapper.material_func);
result.GeometryParameters = param;
var gm = game.Services.GetService(typeof(GeometryManager)) as GeometryManager;
gm.Clear();
try
{
gm.AddGeometry(param);
}
catch (Exception ex)
{
result.Message = ex.Message;
result.Success = false;
}
}
result.Message = "OK";
result.Success = true;
return(result);
}
public MathGeometry(Game game, GeometryParameters parameters)
{
graphics = game.GraphicsDevice;
this.game = game;
this.parameters = parameters;
effect = game.Content.Load<Effect>("VoxelEffect");
materials = game.Content.Load<Texture2D>("materials");
if (!init) Init(game.GraphicsDevice);
List<VoxelVertex> voxels = new List<VoxelVertex>();
for (int x = 0; x < parameters.Size.X; x++)
{
for (int y = 0; y < parameters.Size.Y; y++)
{
for (int z = 0; z < parameters.Size.Y; z++)
{
Point3D p = new Point3D(x, y, z);
if (!parameters.Visible(p)) continue;
int material = parameters.MaterialID(p);
VoxelVertex v = new VoxelVertex()
{
Position = p.ToVector3(),
MaterialID = material
};
voxels.Add(v);
}
}
}
instanceBuffer = new VertexBuffer(graphics, typeof(VoxelVertex), voxels.Count, BufferUsage.WriteOnly);
instanceBuffer.SetData(voxels.ToArray());
numInstances = voxels.Count;
}
