package myGraphics.VectorGrafix;
import myGraphics.VectorGrafix.Matrix3d;
import myGraphics.VectorGrafix.Vector3d;

import java.lang.Math;

public class Transformation3d extends Matrix3d{
	public Transformation3d() {
		super();
	}

	public Transformation3d(Matrix3d M)	 {
		super();
		for (int i = 0; i < 4; i++)  {
			for (int j = 0; j < 4; j++) {
				mterm[i][j] = M.mterm[i][j];
			}
		}
	}
	
	public Transformation3d copy() {
		Transformation3d target = new Transformation3d();
		
		for (int i = 0; i < 4; i++)  {
			for (int j = 0; j < 4; j++) {
				target.mterm[i][j] = mterm[i][j];
			}
		}
		return target;
	}

	public Transformation3d	translate(double Ax, double Ay, double Az)	{
		Matrix3d temp =	new	Matrix3d();
		
		temp.set_term(0, 0,	1.0);
		temp.set_term(0, 3,	Ax);
		temp.set_term(1, 1,	1.0);
		temp.set_term(1, 3,	Ay);
		temp.set_term(2, 2,	1.0);
		temp.set_term(2, 3,	Az);
		
		return new Transformation3d(temp.multiply(this));
  	}
	
  	public Transformation3d translate(Vector3d v) {
  		return translate(v.x(), v.y(), v.z());
  	}
  	
	public Transformation3d scale(double Sx, double Sy,	double Sz) {
		Matrix3d temp =	new	Matrix3d();
		
		temp.set_term(0, 0,	Sx);
		temp.set_term(1, 1,	Sy);
		temp.set_term(2, 2,	Sz);
		temp.set_term(3, 3, 1.0);
	
		return new Transformation3d(temp.multiply(this));
	}
  
	public Transformation3d x_rotate(double Theta)	{
		Matrix3d temp =	new	Matrix3d();
	
		double theSin = Math.sin(Theta);
		double theCos = Math.cos(Theta);
		
		temp.set_term(0, 0, 1.0);
		temp.set_term(1, 1,	theCos);
		temp.set_term(1, 2,	-theSin);
		temp.set_term(2, 1,	theSin);
		temp.set_term(2, 2,	theCos);
		temp.set_term(3, 3, 1.0);
	
		return new Transformation3d(temp.multiply(this));
 	}
  
  	public Transformation3d y_rotate(double Theta)	{
		Matrix3d temp =	new	Matrix3d();
		
		double theSin = Math.sin(Theta);
		double theCos = Math.cos(Theta);
				
		temp.set_term(0, 0,	theCos);
		temp.set_term(0, 2,	theSin);
		temp.set_term(1, 1,	1.0);
		temp.set_term(2, 0,	-theSin);
		temp.set_term(2, 2,	theCos);
		temp.set_term(3, 3,	1.0);
		
		return new Transformation3d(temp.multiply(this));
	}
	
	public Transformation3d z_rotate(double Theta)	{
		Matrix3d temp =	new	Matrix3d();
		
		double theSin = Math.sin(Theta);
		double theCos = Math.cos(Theta);
		
		temp.set_term(0, 0,	theCos);
		temp.set_term(0, 1,	-theSin);
		temp.set_term(1, 0,	theSin);
		temp.set_term(1, 1,	theCos);
		temp.set_term(2, 2,	1.0);
		temp.set_term(3, 3,	1.0);
		
		return new Transformation3d(temp.multiply(this));
	}
	
	public Vector3d apply(Vector3d v)	{
		return this.multiply(v);
	}
	
	public Transformation3d appliedBefore(Transformation3d laterTrans) {
		return new Transformation3d(laterTrans.multiply(this));
	}
}