Exemplo n.º 1
0
		//transformuje vektor (x,y,z,1) matici m
		public Vector3 Transform(Matrix44 m)
		{
		  double w = x*m.M[3,0] + y*m.M[3,1] + z*m.M[3,2] + m.M[3,3];
		  return new Vector3((x*m.M[0,0] + y*m.M[0,1] + z*m.M[0,2] + m.M[0,3])/w,
		  (x*m.M[1,0] + y*m.M[1,1] + z*m.M[1,2] + m.M[1,3])/w,
		  (x*m.M[2,0] + y*m.M[2,1] + z*m.M[2,2] + m.M[2,3])/w
		  );
		}
Exemplo n.º 2
0
 public Projection(double angle,double aspect,double n,double f)
 {
     double tan = Math.Tan(angle/2);
       double cotan = 1/tan;
       width = tan*n*2/aspect;
       height= tan*n*2;
       znear = n;
       zfar = f;
       matrix = new Matrix44(new double [,]
       {{cotan/aspect,0,0,0},
       {0,cotan,0,0},
       {0,0,(f+n)/(n-f),(2*f*n)/(n-f)},
       {0,0,-1,0}});
 }
Exemplo n.º 3
0
 //vynasobi matici pm1 matici pm2 a vrati vysledek jako novou matici
 public static Matrix44 Multiply(Matrix44 pm1,Matrix44 pm2)
 {
     int i;
     int j;
     Matrix44 newmatrix = new Matrix44();
     for (i = 0; i < 4; i++)
     {
         for (j = 0; j < 4; j++)
         {
             newmatrix.m[i,j] = pm1.M[i,0]*pm2.M[0,j] + pm1.M[i,1]*pm2.M[1,j]
             + pm1.M[i,2]*pm2.M[2,j] + pm1.M[i,3]*pm2.M[3,j];
         }
     }
     return newmatrix;
 }
Exemplo n.º 4
0
        private double[,] zbuffer; //pamet hloubky

        #endregion Fields

        #region Constructors

        //nastavi promenne na defaultni hodnoty.
        //parametrem bitmap se predava odkaz na bitmapu do ktere se bude kreslit
        public Soft3DScreen(Int32[,] bitmap)
        {
            screen = bitmap;
            screenHeight = bitmap.GetLength(1);
            screenWidth = bitmap.GetLength(0);
            zbuffer = new double[screenWidth, screenHeight];
            for(int i = 0;i<screenWidth;i++)
              for(int j = 0;j<screenHeight;j++)
                zbuffer[i,j] = 1;//inicializace z bufferu na max hodnotu

            projection = new Projection(Math.PI/4,(double)screenWidth/(double)screenHeight,
            2.4,50);//nastaveni projekce,zorny uhel je 45 stupnu
            viewport = new Viewport(2,2,
                        screenWidth,screenHeight);
            byte[] white = {255,255,255,255};
            color = BitConverter.ToInt32(white, 0);
            viewMatrix=Matrix44.GetIdentityMatrix();
        }
Exemplo n.º 5
0
 //otoci okolo osy x o uhel angle (v radianech)
 public void RotateX(double angle)
 {
     Matrix44 matrix = new Matrix44(new double[,]
       {{1,0,0,0},{0,Math.Cos(angle),-Math.Sin(angle),0},
       {0,Math.Sin(angle),Math.Cos(angle),0},{0,0,0,1}});
       m = Multiply(this,matrix).M;
 }
Exemplo n.º 6
0
 //otoci okolo osy axis o uhel angle,axis musi byt normalizovany vektor
 public void RotateAxisAngle(Vector3 axis,double angle)
 {
     double x = axis.X;
       double y = axis.Y;
       double z = axis.Z;
       Matrix44 matrix = new Matrix44(new double[,]
       {{1 + (1-Math.Cos(angle))*(x*x-1),
       -z*Math.Sin(angle)+(1-Math.Cos(angle))*x*y,
       y*Math.Sin(angle)+(1-Math.Cos(angle))*x*z,
       0},
       {z*Math.Sin(angle)+(1-Math.Cos(angle))*x*y,
       1 + (1-Math.Cos(angle))*(y*y-1),
       -x*Math.Sin(angle)+(1-Math.Cos(angle))*y*z,
       0},
      {-y*Math.Sin(angle)+(1-Math.Cos(angle))*x*z,
       x*Math.Sin(angle)+(1-Math.Cos(angle))*y*z,
     1 + (1-Math.Cos(angle))*(z*z-1),
     0},
     {0,0,0,1}});
       m = Multiply(this,matrix).M;
 }
Exemplo n.º 7
0
 //posune ve smeru vektoru (tx,ty,tz)
 public void Translate(double tx,double ty,double tz)
 {
     Matrix44 matrix = new Matrix44(new double[,]
       {{1,0,0,tx},{0,1,0,ty},{0,0,1,tz},{0,0,0,1}});
       m = Multiply(this,matrix).M;
 }
Exemplo n.º 8
0
 //provede zmenu, pro kazdou osu je zmena specifikovana jednim parametrem
 public void Scale(double scalex,double scaley,double scalez)
 {
     Matrix44 matrix = new Matrix44(new double[,]
       {{scalex,0,0,0},{0,scaley,0,0},{0,0,scalez,0},{0,0,0,1}});
       m = Multiply(this,matrix).M;
 }
Exemplo n.º 9
0
 //vytvori model ze seznamu trojuhelniku
 public Model3D(List<TexturedTriangle> ptriangles,Matrix44 m)
 {
     matrix = m;
     triangles = ptriangles.ToArray();
 }