Matrix Scaling and projection

Zoom in the current code only the 2D, think about it yourself (╯▽╰)

Projection matrix formula: 3D

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespaceconsoleapplication6{    classmatrix3x3 { Public DoubleM11, M12, M13;  Public DoubleM21, M22, M23;  Public DoubleM31, M32, M33;        #regionScaling Public Staticmatrix3x3 Setupscale (floatKx,floatKy,floatKz) {matrix3x3 m=Newmatrix3x3 (); M.M11= Kx; M.M12 =0; M.M13 =0; M.M11=0; M.M12 = Ky; M.M13 =0; M.M11=0; M.M12 =0; M.M13 =Kz; returnm; }         Public Staticmatrix3x3 Setupscale (Vector3 v) {matrix3x3 m=Newmatrix3x3 (); M.M11= v.x; M.M12 =0; M.M13 =0; M.M11=0; M.M12 = V.Y; M.M13 =0; M.M11=0; M.M12 =0; M.M13 =v.z; returnm; }        #endregion        #regionOrthogonal projection/// <summary>        ///projecting to xy,xz,yz one of the planes/// </summary>        /// <param name= "axis" >1=xy,2=xz,3=yz</param>         Public voidSetupproject (intaxis) {            Switch(axis) { Case 1:                    //XY planeM11 =1; M12 =0; M13 =0; M21=0; M22 =1; M23 =0; M31=0; M32 =0; M33 =0;  Break;  Case 2:                    //XZ planeM11 =1; M12 =0; M13 =0; M21=0; M22 =0; M23 =0; M31=0; M32 =0; M33 =1;  Break;  Case 3:                    //YZ planeM11 =0; M12 =0; M13 =0; M21=0; M22 =1; M23 =0; M31=0; M32 =0; M33 =1;  Break; }        }        //projecting to any plane         Public voidSetupproject (Vector3 v) {M11=1-v.x *v.x; M22=1-V.y *v.y; M33=1-V.z *v.z; M12= M21 =-v.x *v.y; M13= M31 =-v.x *v.z; M23= M32 =-v.y *v.z; }        #endregion    }    classVector3 { Public Doublex, y, Z;  PublicVector3 (DoubleXDoubleYDoublez) { This. x =x;  This. y =y;  This. z =Z; }         Public Override stringToString () {return string. Format ("{0} {1} {2}", x, Y, z); }    }                                                                }

Matrix Scaling and projection