public void MatrixMode(int mode)
{
if (mode != CurrentMode)
{
switch (mode)
{
case MODELVIEW:
{
ProjectionMatrix = CurrentMatrix;
CurrentMatrix = ModelviewMatrix;
CurrentMode = MODELVIEW;
break;
}
case PROJECTION:
{
ModelviewMatrix = CurrentMatrix;
CurrentMatrix = ProjectionMatrix;
CurrentMode = PROJECTION;
break;
}
default:
break;
}
}
}
public static mat4 outerProcuct(vec4 c, vec4 r)
{
mat4 a = new mat4();
a[0,0] = c.x * r.x; a[1,0] = c.x * r.y; a[2,0] = c.x * r.z; a[3,0] = c.x * r.w;
a[0,1] = c.y * r.x; a[1,1] = c.y * r.y; a[2,1] = c.y * r.z; a[3,1] = c.y * r.w;
a[0,2] = c.z * r.x; a[1,2] = c.z * r.y; a[2,2] = c.z * r.z; a[3,2] = c.z * r.w;
a[0,3] = c.w * r.x; a[1,3] = c.w * r.y; a[2,3] = c.w * r.z; a[3,3] = c.w * r.w;
return a;
}
public static mat4 inverse(mat4 m)
{
double[,] i = m.GetInverse();
mat4 r = new mat4(i);
return r;
}
public static mat4 transpose(mat4 m)
{
return (mat4)m.Transpose;
}
public static mat4 matrixCompMult(mat4 x, mat4 y)
{
mat4 r = new mat4(MatrixSquare.ComponentMultiply(x, y));
return r;
}
public void Frustum(float left, float right,
float bottom, float top,
float zNear, float zFar)
{
CurrentMatrix = (mat4)(Matrix4Util.FrustumMatrix(left, right, bottom, top, zNear, zFar) *
CurrentMatrix);
}
public void Ortho(float left, float right,
float bottom, float top,
float zNear, float zFar)
{
CurrentMatrix = (mat4)(Matrix4Util.OrthoMatrix(left, right, bottom, top, zNear, zFar) * CurrentMatrix);
}
public void Rotate(float angle, vec3 axis)
{
CurrentMatrix = (mat4)(Matrix4Util.RotateMatrix(angle, axis) * CurrentMatrix);
}
public void Translate(vec3 t)
{
CurrentMatrix = (mat4)(Matrix4Util.Translate(ref t) * CurrentMatrix);
}
public void Scale(vec3 s)
{
CurrentMatrix = (mat4)(Matrix4Util.ScaleMatrix(ref s) * CurrentMatrix);
}
public void MultMatrix(mat4 m)
{
CurrentMatrix = (mat4)(m * CurrentMatrix);
}
public void LoadMatrix(mat4 m)
{
CurrentMatrix = m;
}
public void LoadIdentity()
{
CurrentMatrix = Matrix4Util.IdentityMatrix();
}