filling Polygon at an angle using scrollbar values

Posted on 2004-04-07
Last Modified: 2010-03-31
I just can't get my swimming pool (polygon pool) to fill with water at an angle (polygon water).  

My code so far:-

import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;

//<APPLET code=SwimmingPool.class width=600 height=350> </APPLET>

public class SwimmingPool extends Applet implements AdjustmentListener
      private Scrollbar slider;
      private int sliderValue;
      private int currentX;

      public void init()
            Label title1;
            title1 = new Label("Change Pool Volume");
            slider=new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 0, 441);

      public void paint(Graphics g)
            int xValues[] = {40, 440, 440, 40};
            int yValues[] = {40, 40, 60, 100};
            Polygon pool = new Polygon(xValues, yValues, 4);

            int unit = 1;
            //float unit2 = 0.4f;
            int xValues2[] = {40, 40+ currentX, 40 + currentX, 40};
            int yValues2[] = {40*unit, 40, 100, 100};            
            Polygon water = new Polygon(xValues2, yValues2, 4);

      public void adjustmentValueChanged(AdjustmentEvent e)
Question by:buglouie
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LVL 92

Expert Comment

ID: 10779630
try setting the colour before painting:

LVL 86

Expert Comment

ID: 10779821
How does that make any difference to your previous result, apart from changing the color?

Author Comment

ID: 10779858
this has only changed the color - not the scaled "fill".  Still very stuck!
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LVL 86

Expert Comment

ID: 10779868
So why did you accept the answer?
LVL 86

Expert Comment

ID: 10779875
Please post a 0-point question to

and ask them to reopen the question
LVL 92

Expert Comment

ID: 10779893
> Still very stuck!

Why didn't you say so :)

 try the following:

double ratio = (400 - currentX) / 400.0;
int yValues2[] = {40, 40, 60 + (int)(40*ratio), 100};  

> Please post a 0-point question to
> and ask them to reopen the question

You can just ask them, to change the grade to an "A" ;-)


Author Comment

ID: 10779924
Absolutely fantastic - thanks.
LVL 92

Accepted Solution

objects earned 500 total points
ID: 10779946

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