/*

	This is a utility class for working with colors
*/

public class ColorRGB {

	int r;
	int g;
	int b;
	
	public ColorRGB() {
	
		r = 0;
		g = 0;
		b = 0;
		
	}
	
	public ColorRGB(int gray) {
	
		r = gray;
		g = gray;
		b = gray;
	}
	
	public ColorRGB(int r_, int g_, int b_) {
	
		r = r_;
		g = g_;
		b = b_;
		
	}
	
	public color getColor() {
		return color(r, g, b);
	}
	
	public void setR(int r_) {
		r = r_;
	}
	
	public void setG(int g_) {
		g = g_;
	}
	
	public void setB(int b_) {
		b = b_;
	}
	
	public int getR() {
	        return r;
	}
	
	public int getG() {
	        return g;
	}
	
	public int getB() {
	        return b;
	}
	
	public ColorRGB blendColor(ColorRGB ca, ColorRGB cb, int minV, int maxV, int val) {
	        
                int rd, gd, bd;
                
                // figure out the difference in our color values
                rd = cb.getR() - ca.getR();
                gd = cb.getG() - ca.getG();
                bd = cb.getB() - ca.getB();
                
                // calculate the offset betwen minV and maxV
                double vd = maxV - minV;
                double offset = (double)(val - minV) / vd;
                
                // figure out the RGB values that are scaled between the colors CA and CB
                double nr = (double)rd * offset + (double)ca.getR();
                double ng = (double)gd * offset + (double)ca.getG();
                double nb = (double)bd * offset + (double)ca.getB();
                
                // return our new color
                return new ColorRGB((int)nr, (int)ng, (int)nb);
	}
}