import javax.swing.*;
import java.awt.*;

/*
 * Created on Jan 26, 2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author User
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class ChannelPanel extends JPanel 
{
    int x1 = 10,y1 = 220;
    int margin = 10;
    int width = 200;
    int depth = 100;
    int roughnessDepth = 10;
    public double ratio = 0.0;
    
    int length = 200;
    double theta = Math.PI/3.0;
    int xOffset = (int)(length*Math.cos(theta));
    int yOffset = (int)(length*Math.sin(theta));
    
    int ySurfaceOffset = (int)(ratio*width);
    
    int[] x    = {x1,x1+width,x1+width+xOffset,x1+xOffset};
    int[] yTop = {y1,y1,y1-yOffset,y1-yOffset};
    
    int[] yBottom = {y1+depth,
            		 y1+depth,
            		 y1+depth-yOffset,
            		 y1+depth-yOffset};
    
    int[] yRoughness = {y1+depth-margin,
            			y1+depth-margin,
            			y1+depth-margin-yOffset,
            			y1+depth-margin-yOffset};
    
    int[] ySurface = {y1+depth-margin-ySurfaceOffset,
            		  y1+depth-margin-ySurfaceOffset,
            		  y1+depth-margin-yOffset-ySurfaceOffset,
            		  y1+depth-margin-yOffset-ySurfaceOffset};
    
    public void paintComponent(Graphics g)
    {
        int d = (int)(ratio*width);
        Graphics2D g2 = (Graphics2D)g;
              
        g2.setStroke(new BasicStroke(1.0f));
        g2.setColor(new Color(160,82,45));
        g2.fillPolygon(x, yRoughness, 4);
        g2.fillRect(x1, y1+depth-margin, width, margin);
        g2.fillRect(x1+xOffset,y1-yOffset+depth-margin,width, margin);
        g2.fillPolygon(x, yBottom, 4);
        g2.setColor(Color.BLACK);
        g2.drawPolygon(x, yRoughness, 4);
        g2.drawRect(x1, y1+depth-margin, width, margin);
        g2.drawRect(x1+xOffset,y1-yOffset+depth-margin,width, margin);
        g2.drawPolygon(x, yBottom, 4);
        
        ySurfaceOffset = (int)(ratio*width);
        ySurface[0] = y1+depth-margin-ySurfaceOffset;
        ySurface[1] = y1+depth-margin-ySurfaceOffset;
		ySurface[2] = y1+depth-margin-yOffset-ySurfaceOffset;
		ySurface[3] = y1+depth-margin-yOffset-ySurfaceOffset;
        if(Math.abs(ySurfaceOffset) >= 0.5){
            g2.setColor(Color.BLUE);
            g2.fillPolygon(x, ySurface, 4);
        }
        
        g2.setColor(Color.BLACK);
        g2.setStroke(new BasicStroke(2.0f));
        g2.drawPolygon(x, yTop, 4);     
        g2.drawPolygon(x, yBottom, 4);
        g2.drawRect(x1, y1, width, depth);
        g2.drawRect(x1+xOffset,y1-yOffset,width, depth);        
    }
}