GradientPaint under Java 1.0

Question

Hello all!
I have problem with painting. I need to draw rectangle for example with smooth change of one color to another. In Java 2 I do it in such way:
public void paint(Graphics g){
    Graphics2D g2 = (Graphics2D)g;
    GradientPaint p = new GradientPaint(5, 5, new Color(0, 0, 110), 50, 5, new Color(0, 110, 0));
    g2.setPaint(p);
    g2.fillRect(0, 0, 80, 20);
}But I need code that works in all JRE, including Microsoft VM.
So how to creatre manually smooth change of color?

Answer 1

Well, i'm not going to do all the work for you ;-) but here are some tips:
First of all, make a method to draw a filled square using the drawLine method.
Then figure out how to make colours shift, in the way you want.
Colour exist out of 3 base colours, Red, Blue and Green, they can all have values from 0 to 256. combining them, makes any colour.
Make a method to make colours shift in steps to another colour, by shift up, or down the values of the colour(plenty of example code out there... lookie @ google)
Then make the method applicable in the drawline method...
idea for header of the colour method
public Color determineColor(int howMuchSteps,int currentStep, Colour startColour, Color endColour) {
// Colour calculation here
}Anyways, that's the only help I can offer.
Michael