import java.util.*;

class Degrade {

    static final Scanner input = new Scanner(System.in);

    public static void main(String[] args) {
        float r0, v0, b0;
        float r1, v1, b1;

        System.out.println("Couleur 1 (R V B) ? ");
        r0 = input.nextFloat();
        v0 = input.nextFloat();
        b0 = input.nextFloat();

        System.out.println("Couleur 2 (R V B) ? ");
        r1 = input.nextFloat();
        v1 = input.nextFloat();
        b1 = input.nextFloat();

        DrawingWindow w = new DrawingWindow("Degrade", 640, 480);

        int nlignes = w.width + w.height;
        for (int lig = 0; lig < nlignes; lig++) {
            float r = r0 + lig * (r1 - r0) / (nlignes - 1);
            float v = v0 + lig * (v1 - v0) / (nlignes - 1);
            float b = b0 + lig * (b1 - b0) / (nlignes - 1);
            w.setColor(r, v, b);
            int x1 = 0;
            int y1 = w.height - 1 - lig;
            int x2 = lig;
            int y2 = w.height - 1;
            w.drawLine(x1, y1, x2, y2);
        }
    }
}