This applet allows the user to paint on a canvas that mixes colors additively. Various parameters can be manipulated and some preset images can be loaded and also painted on.
Easily usable by both undergraduates and high school students. Appropriate for both computer graphics programming courses and art and design courses.
The user clicks on red, green or blue lightbulb buttons in the side panel and paints on the central canvas. Overlapping trails of color mix additively. Color transparency can be set with the transparency slider bar. Color value thermometers indicate the color component scalar values for the pixel immediately under the cursor. Preset images can be selected with the Images drop-down menu.