Where can I find a class/library to make my image?

Question

Hi, all:
I've never worked with Images before, and I'm a little lost on where to start. I need to make a graphical display involving a parameter value for the image I'll be displaying. Imagine a range from 0-9, where given a value of 0, a thin circle is drawn, at 4 a fat tire, and at 9, a solid disk. That circle will be overlaying a square (I'm fine on the square, as its color is an easily settable HSB combo). That circle will also be in greyscale based on another range from 0-9. So, given something like
     public Image makingADisk () {
          int diskShape = a value from 0-9 I'm getting from an arrayList elsewhere
          int diskGreyScale = a value from 0-9 I'm getting from an arrayList elsewhere
          get the image that corresponds to the scaled value of diskShape
          get the color that corresponds to the scaled value of diskGreyScale
          return aDiskHavingTheseTwoProperties;
     }Where do I start? Is there a library out there that will draw circles/disks like this? I'm fine on getting the greyscale color, but how do I make the image that color? If you have suggestions for a different class instead of Image to use, I'd like to know that too.

Answer 1

Get a graphics context for the image and simply call the setColor(..) and drawOval(..) methods.
Example (for diskShape0):
BufferedImage image = new BufferedImage(628,480, BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) image.getGraphics(); // cast is safe, see javadoc of Image 
// color
int colorFactor = diskGreyScale * 200;
g.setColor(new Color(colorFactor,colorFactor,colorFactor));
// stroke
BasicStroke stroke = new BasicStroke(1);
g.setStroke(stroke);
// draw
g.drawOval(x, y, width, height);    Edited by: M.Stamm on Jul 18, 2008 12:46 AM -> Spelling error