public void SetTexture(ref FunkyTexture tex)
{
TextureToUse = tex;
}
public async Task CreateTriangles(string filename, float scale, Vector3 position)
{
var folder = Windows.ApplicationModel.Package.Current.InstalledLocation;
var file = await folder.GetFileAsync(filename);
var wholeFile = await FileIO.ReadTextAsync(file);
int v = 0;
int t = 0;
int n = 0;
string[] read = wholeFile.Split('\n');
byte[] pixels = new byte[1];
WriteableBitmap wbmp = null;
Vector2 X = new Vector2(float.MaxValue, float.MinValue), Y = new Vector2(float.MaxValue, float.MinValue), Z = new Vector2(float.MaxValue, float.MinValue);
FunkyTexture texture = new FunkyTexture();
string mtlFilename = string.Empty;
foreach (string s in read)
{
if (s.Length == 0) continue;
if (s[0] == 'v' && s[1] == ' ')
{
v++;
string[] temp = s.Split(' ');
float x = float.Parse(temp[1]);
if (x < X.X) X.X = x;
if (x > X.Y) X.Y = x;
float y = float.Parse(temp[2]);
if (y < Y.X) Y.X = y;
if (y > Y.Y) Y.Y = y;
float z = float.Parse(temp[3]);
if (z < Z.X) Z.X = z;
if (z > Z.Y) Z.Y = z;
}
else if (s[0] == 'v' && s[1] == 't')
{
t++;
}
else if (s[0] == 'v' && s[1] == 'n')
{
n++;
}
else if (s.Contains("mtllib"))
{
mtlFilename = s.Split(' ')[1];
var mtlFile = await folder.GetFileAsync(mtlFilename);
var mtlText = await FileIO.ReadTextAsync(mtlFile);
foreach (string ms in mtlText.Trim().Split('\n'))
{
if (ms.Contains("map_Kd"))
{
string texFilename = ms.Split(' ')[1];
var texFile = await folder.GetFileAsync(texFilename);
var properties = await texFile.Properties.GetImagePropertiesAsync();
wbmp = new WriteableBitmap((Int32)properties.Width, (Int32)properties.Height);
await wbmp.LoadAsync(texFile);
pixels = new byte[wbmp.PixelWidth * wbmp.PixelHeight * 4];
using (Stream pixelStream = wbmp.PixelBuffer.AsStream())
{
await pixelStream.ReadAsync(pixels, 0, pixels.Length);
}
wbmp.Invalidate();
texture.TexturePixels = new Vector3[wbmp.PixelHeight, wbmp.PixelWidth];
int r = 0, c = 0;
for (int i = 0; i < pixels.Length; i++)
{
texture.TexturePixels[r, c] = new Vector3(pixels[i+2], pixels[i+1], pixels[i+0])/255.0f;
c = (c + 1) % wbmp.PixelWidth;
if (c == 0)
{
r = (r + 1) % wbmp.PixelHeight;
}
i+=3;
}
texture.TexSize = new Vector2(wbmp.PixelWidth, wbmp.PixelHeight);
}
}
}
}
if (X.X == 0) X.X = float.MinValue;
if (X.Y == 0) X.Y = float.MinValue;
if (Y.X == 0) Y.X = float.MinValue;
if (Y.Y == 0) Y.Y = float.MinValue;
if (Z.X == 0) Z.X = float.MinValue;
if (Z.Y == 0) Z.Y = float.MinValue;
Vector3[] vertices = new Vector3[v];
Vector3[] Normals = new Vector3[n];
Vector2[] Texture = new Vector2[t];
int cV = 0, cN = 0, cT = 0;
foreach (string s in read)
{
if (s.Length == 0) continue;
if (s[0] == 'v')
{
if (s[1] == ' ')
{
string[] temp = s.Split(' ');
float a = float.Parse(temp[1]);
float b = -float.Parse(temp[2]);
float c = float.Parse(temp[3]);
vertices[cV] = new Vector3(
(a >= 0 ? (a / X.Y) : -(a / X.X)) * scale + position.X,
(b >= 0 ? (b / Y.Y) : -(b / Y.X)) * scale + position.Y,
(c >= 0 ? (c / Z.Y) : -(c / Z.X)) * scale + position.Z
);
cV++;
}
if (s[1] == 't')
{
string[] temp = s.Split(' ');
float a = float.Parse(temp[1]);
float b = float.Parse(temp[2]);
Texture[cT] = new Vector2(a, b);
cT++;
}
if (s[1] == 'n')
{
string[] temp = s.Split(' ');
float a = float.Parse(temp[1]);
float b = float.Parse(temp[2]);
float c = float.Parse(temp[3]);
Normals[cN] = new Vector3(a, b, c);
cN++;
}
}
}
int count = 0;
foreach (string s in read)
{
if (s.Length == 0) continue;
if (s[0] == 'f')
{
int a, b, c;
if (s.Contains("/"))
{
string[] temp = s.Split(' ');
a = int.Parse(temp[1].Split('/')[0]) - 1;
b = int.Parse(temp[2].Split('/')[0]) - 1;
c = int.Parse(temp[3].Split('/')[0]) - 1;
int aa = int.Parse(temp[1].Split('/')[1]) - 1;
int bb = int.Parse(temp[2].Split('/')[1]) - 1;
int cc = int.Parse(temp[3].Split('/')[1]) - 1;
int aaa = int.Parse(temp[1].Split('/')[2]) - 1;
int bbb = int.Parse(temp[2].Split('/')[2]) - 1;
int ccc = int.Parse(temp[3].Split('/')[2]) - 1;
Vector3 v1 = vertices[b - a];
Vector3 v2 = vertices[c - a];
v1 = Vector3.Cross(v1,v2);
v1.Normalize();
v2= new Vector3(RayTracer.ImageSize.X/2.0f, RayTracer.ImageSize.Y/2.0f,0) - RayTracer.Eye;
v2.Normalize();
Triangles.Add(new Triangle(vertices[a], vertices[b], vertices[c], new Vector2[]{
Texture[aa], Texture[bb], Texture[cc]},
new SurfaceType()
{
color = (new Vector3(1, 1, 0)),
type = textureType.standard,
specular = new Vector3(1, 1, 1),
SpecExponent = 9999999999,
}) {TextureToUse = texture, TCC = TextureCoordConst.Z} );
}
else
{
string[] temp = s.Split(' ');
a = int.Parse(temp[1]) - 1;
b = int.Parse(temp[2]) - 1;
c = int.Parse(temp[3]) - 1;
Triangles.Add(new Triangle(vertices[a], vertices[b], vertices[c],
new SurfaceType()
{
color = new Vector3(0.64253f, 0.12354f, 0986345f),
type = textureType.standard,
specular = new Vector3(1, 1, 1),
SpecExponent = 0,
}));
}
//if (count++ > 100) break;
}
}
}