Background
jLogo Programming
- Commanding a Turtle
- Pseudocode
- Adding New Commands
- Iteration & Animation
- Hierarchical Structure
- Procedure Inputs
- Operators & Expressions
- Defining Operators
- Words & Sentences
- User Interface Events
- What If? (Predicates)
- Recursion
- Local Variables
- Global Variables
- Word/Sentence Iteration
- Mastermind Project
- Turtles As Actors
- Arrays
- File Input/Output
Java
- A Java Program
- What's a Class?
- Extending Existing Classes
- Types
- Turtle Graphics
- Control Flow
- User Interface Events
Appendices
- Jargon
- What Is TG?
- TG Directives
- jLogo Primitives
- TG Editor
- Java Tables
- Example Programs
- Installation Notes
Updates
- December 13, 2008
- January 6, 2012
- March 15, 2013
- January 20, 2014
- February 13, 2014
- July 29, 2014
- January 18, 2016
- January 29, 2016
Lastly
ColorNumbers Applet
| Color Numbers Tool |
|---|
A common way to represent colors in computer programs is with what is known as the RGB (Red, Green, Blue) color model. Colors are made up of the combined values of these RGB components. Each of these components can have a value in the range of 0 - 255. The value of zero represents total absence of the component.
This "ColorNumbers" applet lets you play with different combinations of RGB values. Simply fill in the boxes with numbers in the range of 0 - 255 and click the mouse on the [Show Color] button. Start with an obvious color like a Red Value of 255 and display the result, then add a Green Value of 255 to this; and... do you get what you expected?
