/// <summary>
/// Converts a quick string of a Texture Coordinate set to an actual TextureCoordinates.
/// </summary>
/// <param name="str">The string.</param>
/// <returns>The texture coordinates.</returns>
public static TextureCoordinates FromString(string str)
{
TextureCoordinates tc = new TextureCoordinates();
string[] data = str.SplitFast('/');
tc.XScale = StringConversionHelper.StringToFloat(data[0]);
tc.YScale = StringConversionHelper.StringToFloat(data[1]);
tc.XShift = StringConversionHelper.StringToFloat(data[2]);
tc.YShift = StringConversionHelper.StringToFloat(data[3]);
tc.XFlip = data[4] == "t";
tc.YFlip = data[5] == "t";
return(tc);
}
/// <summary>
/// Generates a cube model.
/// </summary>
/// <returns>The cube model.</returns>
public Model GenerateCube()
{
Model m = new Model("cube")
{
Engine = this,
Skinned = true,
ModelMin = new BEPUutilities.Vector3(-1, -1, -1),
ModelMax = new BEPUutilities.Vector3(1, 1, 1)
};
ModelMesh mm = new ModelMesh("cube");
Renderable.ListBuilder builder = new Renderable.ListBuilder();
builder.Prepare();
TextureCoordinates tc = new TextureCoordinates();
builder.AddSide(Location.UnitX, tc, offs: true);
builder.AddSide(Location.UnitY, tc, offs: true);
builder.AddSide(Location.UnitZ, tc, offs: true);
builder.AddSide(-Location.UnitX, tc, offs: true);
builder.AddSide(-Location.UnitY, tc, offs: true);
builder.AddSide(-Location.UnitZ, tc, offs: true);
m.Original = new Model3D();
Model3DMesh m3m = new Model3DMesh()
{
Name = "cube"
};
m3m.Indices = builder.Indices.ToArray();
m3m.Vertices = builder.Vertices.ConvertAll((o) => o.ToLocation().ToBVector()).ToArray();
m3m.TexCoords = builder.TexCoords.ConvertAll((o) => new BEPUutilities.Vector2(o.X, o.Y)).ToArray();
m3m.Normals = builder.Normals.ConvertAll((o) => o.ToLocation().ToBVector()).ToArray();
m.Original.Meshes = new Model3DMesh[] { m3m };
mm.BaseRenderable.GenerateVBO(builder);
m.AddMesh(mm);
return(m);
}
/// <summary>
/// Helper to add an axis-aligned side to this <see cref="Renderable"/> builder.
/// </summary>
/// <param name="normal">The normal.</param>
/// <param name="tc">The texture coordinates.</param>
/// <param name="offs">Whether to offset.</param>
/// <param name="texf">The texture ID.</param>
public void AddSide(Location normal, TextureCoordinates tc, bool offs = false, float texf = 0)
{
if (Vertices.Capacity < 6)
{
SetCapacity(12);
}
// TODO: IMPROVE! Or discard?!
for (int i = 0; i < 6; i++)
{
Normals.Add(normal.ToOpenTK());
Colors.Add(new Vector4(1f, 1f, 1f, 1f));
Indices.Add((uint)Indices.Count);
AddEmptyBoneInfo();
}
float aX = (tc.XFlip ? 1 : 0) + tc.XShift;
float aY = (tc.YFlip ? 1 : 0) + tc.YShift;
float bX = (tc.XFlip ? 0 : 1) * tc.XScale + tc.XShift;
float bY = (tc.YFlip ? 1 : 0) + tc.YShift;
float cX = (tc.XFlip ? 0 : 1) * tc.XScale + tc.XShift;
float cY = (tc.YFlip ? 0 : 1) * tc.YScale + tc.YShift;
float dX = (tc.XFlip ? 1 : 0) + tc.XShift;
float dY = (tc.YFlip ? 0 : 1) * tc.YScale + tc.YShift;
float zero = offs ? -0.5f : -1; // Sssh
float one = offs ? 0.5f : 1;
if (normal.Z == 1)
{
// T1
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(zero, zero, one));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(zero, one, one));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(one, one, one));
// T2
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(zero, zero, one));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(one, one, one));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(one, zero, one));
}
else if (normal.Z == -1)
{
// T1
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(one, one, zero));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(zero, one, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
// T2
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(one, zero, zero));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(one, one, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
}
else if (normal.X == 1)
{
// T1
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(one, one, one));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(one, one, zero));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(one, zero, zero));
// T2
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(one, zero, one));
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(one, one, one));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(one, zero, zero));
}
else if (normal.X == -1)
{
// T1
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(zero, one, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(zero, one, one));
// T2
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(zero, one, one));
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(zero, zero, one));
}
else if (normal.Y == 1)
{
// T1
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(one, one, one));
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(zero, one, one));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(zero, one, zero));
// T2
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(one, one, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(one, one, one));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(zero, one, zero));
}
else if (normal.Y == -1)
{
// T1
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
TexCoords.Add(new Vector3(aX, aY, texf));
Vertices.Add(new Vector3(zero, zero, one));
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(one, zero, one));
// T2
TexCoords.Add(new Vector3(dX, dY, texf));
Vertices.Add(new Vector3(zero, zero, zero));
TexCoords.Add(new Vector3(bX, bY, texf));
Vertices.Add(new Vector3(one, zero, one));
TexCoords.Add(new Vector3(cX, cY, texf));
Vertices.Add(new Vector3(one, zero, zero));
}
else
{
throw new Exception("Lazy code can't handle unique normals! Only axis-aligned, normalized normals!");
}
}
