public static Bitmap LoadTexture(string textureName)
{
using (var stream = ManifestResourceManager.LoadFromResources($"Textures/{textureName}.bmp"))
{
return(new Bitmap(stream));
}
}
public void LoadMap(string name)
{
if (CurrentMap != null)
{
Dispose();
}
CurrentMap = ManifestResourceManager.LoadFromResources($"{name}.map");
Reader = new StreamReader(CurrentMap);
}
public static Bitmap LoadCustomTexture(string textureName)
{
using (var stream = ManifestResourceManager.LoadFromResources($"Textures/{textureName}"))
{
using (var image = Image.FromStream(stream))
{
return(new Bitmap(image));
}
}
}
public static async Task <GeometricShape> LoadModel(string model, bool textured = true)
{
var positions = new List <vec3>(1024);
var color = new vec3(0.0f, 0.0f, 0.0f);
var normals = new List <vec3>(1024);
var uvs = textured ? new List <vec2>(1024) : null;
var vertices = new List <vertex>(1024);
var indices = new List <int>(1024);
var cache = new Dictionary <string, int>();
using (var stream = ManifestResourceManager.LoadFromResources($"Models/{model}.obj"))
{
using (var reader = new StreamReader(stream))
{
while (!reader.EndOfStream)
{
var line = await reader.ReadLineAsync();
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (line[0] == '#')
{
continue;
}
if (line.StartsWith("mtllib"))
{
continue;
}
if (line[0] == 'o')
{
continue;
}
if (line.StartsWith("usemtl"))
{
continue;
}
if (line[0] == 's')
{
continue;
}
switch (line[0])
{
case 'v':
{
var pieces = line.Split(' ');
var vector = new vec3
(
Convert.ToSingle(pieces[1], CultureInfo.InvariantCulture),
Convert.ToSingle(pieces[2], CultureInfo.InvariantCulture),
pieces.Length > 3 ?
Convert.ToSingle(pieces[3], CultureInfo.InvariantCulture)
:
0.0f
);
switch (line[1])
{
case ' ': positions.Add(vector); break;
case 'n': normals.Add(vector); break;
case 't': uvs?.Add(new vec2(vector.x, 1.0f - vector.y)); break;
default: break;
}
}
break;
case 'f':
{
var pieces = line.Split(' ');
void UseVertex(string vertex)
{
var data = vertex.Split('/');
var pos = Convert.ToInt32(data[0]) - 1;
var tex = Convert.ToInt32(data[1]) - 1;
var nor = Convert.ToInt32(data[2]) - 1;
var vert = new vertex(positions[pos], color, normals[nor], textured ? uvs[tex] : vector2.zero);
var desc = vert.ToString();
if (cache.TryGetValue(desc, out var index))
{
indices.Add(index);
}
else
{
index = vertices.Count;
vertices.Add(vert);
indices.Add(index);
cache.Add(desc, index);
}
}
UseVertex(pieces[1]);
UseVertex(pieces[2]);
UseVertex(pieces[3]);
}
break;
default: break;
}
}
}
}
return(new GeometricShape(new ShapeData(vertices.ToArray(), indices.ToArray())));
}
