import java.awt.*;
import java.awt.geom.* ;

public class Test {
		
	public static void main(String[] args) {
		Img srcimg = new Img("drg1.jpg");
		srcimg.ShowImage();

		Point2D.Double p1, p2, p3, P1, P2, P3;

		Point2D.Double B = new Point2D.Double();
		Point2D.Double A1 = new Point2D.Double();
		Point2D.Double A2 = new Point2D.Double();

		p1 = new Point2D.Double(0, 0);
		p2 = new Point2D.Double(srcimg.getWidth(), 0);
		p3 = new Point2D.Double(0, srcimg.getHeight());

		int newwidth = 620;
		int newheight = 480;
//		int newwidth = srcimg.getWidth(); 
//		int newheight = srcimg.getHeight();

		P1 = new Point2D.Double(10, 0);
		P2 = new Point2D.Double(600, 0);
		P3 = new Point2D.Double(0, 480);

		Gauss g1  = new Gauss();
		g1.makeMatrix(3, 4);
		Gauss g2  = new Gauss();
		g2.makeMatrix(3, 4);

		g1.setValue(0, 0, P1.x);
		g1.setValue(0, 1, P1.y);
		g1.setValue(0, 2, 1.0);
		g1.setValue(0, 3, p1.x);

		g1.setValue(1, 0, P2.x);
		g1.setValue(1, 1, P2.y);
		g1.setValue(1, 2, 1.0);
		g1.setValue(1, 3, p2.x);

		g1.setValue(2, 0, P3.x);
		g1.setValue(2, 1, P3.y);
		g1.setValue(2, 2, 1.0);
		g1.setValue(2, 3, p3.x);

		g2.setValue(0, 0, P1.x);
		g2.setValue(0, 1, P1.y);
		g2.setValue(0, 2, 1.0);
		g2.setValue(0, 3, p1.y);

		g2.setValue(1, 0, P2.x);
		g2.setValue(1, 1, P2.y);
		g2.setValue(1, 2, 1.0);
		g2.setValue(1, 3, p2.y);

		g2.setValue(2, 0, P3.x);
		g2.setValue(2, 1, P3.y);
		g2.setValue(2, 2, 1.0);
		g2.setValue(2, 3, p3.y);

		g1.dumpMatrix();
		double[] ret1 = g1.Eliminate();
		double[] ret2 = g2.Eliminate();

		double a11, a21, a22, a12, b11, b21;
		a11 = ret1[0];
		a21 = ret1[1];
		b11 = ret1[2];
		a12 = ret2[0];
		a22 = ret2[1];
		b21 = ret2[2];

		Img newimg = new Img(newwidth, newheight);
		
		int x, y;
		double x1, y1;
		double alpha, beta;
		int redA, blueA, greenA;
		int redB, blueB, greenB;
		int redD, blueD, greenD;
		Color pixel1, pixel2;

		for (x = 0; x < newwidth; x++) {
			for (y = 0; y < newheight; y++) {
				x1 = a11*x + a12*y;
				y1 = a21*x + a22*y;

				x1 += b21;
				y1 += b11;

				alpha = x1 - (int)x1;
				beta = y1 - (int)y1;
				
				//pixel = ((1-alpha) * srcimg.GetPixelColor((int)x1, (int)y1) + alpha * srcimg.GetPixelColor((int)(x1+1), (int)(y1+1)));
			//	pixel1 = srcimg.GetPixelColor((int)x1, (int)y1);
			//	pixel2 = srcimg.GetPixelColor((int)(x1+1), (int)(y1+1));

	            if((x1 < 0.0) || (x1 >(srcimg.getWidth())-1) || (y1 < 0.0) || (y1 > (srcimg.getHeight())-1)) {
					newimg.SetPixelColor(x, y, Color.RED);
					continue;
				}

				int dpx2 = Math.min((int)(x1 + 1), srcimg.getWidth()-1);
				int dpy2 = Math.min((int)(y1 + 1), srcimg.getHeight()-1);

				blueA = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)y1).getBlue()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(y1)).getBlue());
				redA = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)y1).getRed()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(y1)).getRed());
				greenA = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)y1).getGreen()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(y1)).getGreen());
				
				blueB = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)dpy2).getBlue()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(dpy2)).getBlue());
				redB = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)dpy2).getRed()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(dpy2)).getRed());
				greenB = (int)((1-alpha) * srcimg.GetPixelColor((int)x1, (int)dpy2).getGreen()) + (int)(alpha * srcimg.GetPixelColor((int)(dpx2), (int)(dpy2)).getGreen());

				blueD = (int)(((1-beta) * blueA) + (beta * blueB));
				redD = (int)(((1-beta) * redA) + (beta * redB));
				greenD = (int)(((1-beta) * greenA) + (beta * greenB));


				//newimg.SetPixelColor(x, y, srcimg.GetPixelColor((int)x1, (int)y1));
				newimg.SetPixelColor(x, y, new Color(redD, greenD, blueD));
			}
		}

		newimg.Build();
		newimg.ShowImage();

	}
}