private void InitProgram()
{
GL.GenBuffers(1, out iboElements);
shaders.Add("tex", new Shader("vs_tex.glsl", "fs_tex.glsl"));
shaders.Add("def", new Shader("vs.glsl", "fs.glsl"));
activeShader = shaders.Keys.First();
textures.Add("bricks", LoadImage("bricks.jpg"));
textures.Add("bricks2", LoadImage("bricks2.jpg"));
ObjVolume teapot = ObjVolume.LoadFromFile("teapot.obj");
teapot.Scale = new Vector3(0.1f, 0.1f, 0.1f);
Volumes.Add(teapot);
TexPyramid tp1 = new TexPyramid();
tp1.Position = new Vector3(-1, 0, 0);
tp1.TextureID = textures["bricks2"];
Volumes.Add(tp1);
TexPyramid tp2 = new TexPyramid();
tp2.TextureID = textures["bricks"];
tp2.Position = new Vector3(1, 0, 0);
Volumes.Add(tp2);
CursorVisible = false;
lastMousePos = new Vector2(Mouse.GetState().X, Mouse.GetState().Y);
}
public static ObjVolume LoadFromFile(string filename)
{
ObjVolume obj = new ObjVolume();
try
{
using (StreamReader reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read)))
{
obj = LoadFromString(reader.ReadToEnd());
}
}
catch (FileNotFoundException e)
{
Console.WriteLine("File not found: {0}", filename);
}
catch (Exception e)
{
Console.WriteLine("Error loading file: {0}", filename);
}
return(obj);
}
public static ObjVolume LoadFromString(string obj)
{
// Seperate lines from the file
List <String> lines = new List <string>(obj.Split('\n'));
// Lists to hold model data
List <Vector3> verts = new List <Vector3>();
List <Vector3> colors = new List <Vector3>();
List <Vector2> texs = new List <Vector2>();
List <Tuple <int, int, int> > faces = new List <Tuple <int, int, int> >();
// Read file line by line
foreach (String line in lines)
{
string[] split = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
.Select(s => s.Replace('.', ',')).ToArray();
if (split.Length == 0)
{
continue;
}
if (split[0].Equals("v")) // Vertex definition
{
if (split.Length != 4)
{
Console.WriteLine(line + " does not contain 4 elements!");
continue;
}
Vector3 vec = new Vector3();
// Attempt to parse each part of the vertice
bool success = float.TryParse(split[1], out vec.X);
success &= float.TryParse(split[2], out vec.Y);
success &= float.TryParse(split[3], out vec.Z);
// Dummy color/texture coordinates for now
colors.Add(new Vector3((float)Math.Sin(vec.Z), (float)Math.Sin(vec.Z), (float)Math.Sin(vec.Z)));
texs.Add(new Vector2((float)Math.Sin(vec.Z), (float)Math.Sin(vec.Z)));
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing vertex: {0}", line);
}
verts.Add(vec);
}
else if (split[0].Equals("f")) // Face definition
{
if (split.Length != 4)
{
Console.WriteLine(line + " does not contain 4 elements!");
continue;
}
Tuple <int, int, int> face = new Tuple <int, int, int>(0, 0, 0);
int i1, i2, i3;
// Attempt to parse each part of the face
bool success = int.TryParse(split[1], out i1);
success &= int.TryParse(split[2], out i2);
success &= int.TryParse(split[3], out i3);
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing face: {0}", line);
}
else
{
// Decrement to get zero-based vertex numbers
face = new Tuple <int, int, int>(i1 - 1, i2 - 1, i3 - 1);
faces.Add(face);
}
}
}
// Create the ObjVolume
ObjVolume vol = new ObjVolume();
vol.vertices = verts.ToArray();
vol.faces = new List <Tuple <int, int, int> >(faces);
vol.colors = colors.ToArray();
vol.textureCoords = texs.ToArray();
return(vol);
}
