/**
* Load texture image from file and create GL texture object.
* */
public void Load(string filename)
{
this.filename = filename;
if (String.IsNullOrEmpty(filename))
{
throw new ArgumentException(filename);
}
textureId = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, textureId);
string path = AssetPath.GetPathToAsset(filename);
Image image = Image.FromFile(path);
Bitmap bmp = new Bitmap(image);
BitmapData bmp_data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, bmp_data.Width, bmp_data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bmp_data.Scan0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.NearestMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
bmp.UnlockBits(bmp_data);
Console.WriteLine("Texture " + filename + " loaded.");
}
/**
* Read an OBJ file an create a mesh from the content.
* */
public void Read(string filename, ITriangleMesh mesh)
{
this.mesh = mesh;
mesh.Clear();
// Read input
string objSource = System.IO.File.ReadAllText(AssetPath.GetPathToAsset(filename));
string[] lines = objSource.Split('\n');
foreach (String line in lines)
{
string[] tokens = line.Trim().Split(' ', '\t');
if (tokens.Length > 0)
{
if (tokens [0].CompareTo("v") == 0)
{
ParseVertex(tokens);
}
else if (tokens [0].CompareTo("f") == 0)
{
ParseFacet(tokens);
}
else if (tokens [0].CompareTo("vt") == 0)
{
ParseTextureCoordinate(tokens);
}
}
}
mesh.ComputeTriangleNormals();
Console.WriteLine("Read mesh from file " + filename + " with " + mesh.GetNumberOfTriangles() + " triangles and " + mesh.GetNumberOfVertices() + " vertices.");
}
/**
* Read source from text file.
* */
private string ReadShaderSource(string filename)
{
return(System.IO.File.ReadAllText(AssetPath.GetPathToAsset(filename)));
}