Introduction to Color Design
CS237 Assignment #4
Tufte, Edward, Envisioning Information, Chapter 3, Color and Information
Read either Zwimfter for computer color or Hornung for mixed color:
Zwimfter, Moritz Color Light Sight Sense, plates 315-470;
Hornung, David, Handmade Color, Part Two: First Principles
Read 3D Fluid Visualization paper. Read the abstract. Mostly look at the pictures and evaluate what you think makes them work and what makes them fail.
Read Virtual Wind Tunnel paper enough to understand what is happening visually.
Read Illuminated Lines paper enough to understand what is happening visually.
Part One of this assignment should be completed in groups. Part Two is optional and can be completed in groups or on your own.
Part One: Figure and Ground Relationships in Color
Your assignment can be completed on the computer or with gouache paint (opaque watercolor). If you use the computer (PhotoShop, Illustrator or other graphic program), read the selections from Zwimfter listed above. If you use paint, read the selections from Hornung.
Using the medium that you selected, design a simple graphic composition showing a colored figure (any shape, geometric or organic) against a colored ground. There should be no line or border separating the figure from the ground. Do fifteen variations of this composition, changing the figure, the ground or both. See Figure 1, below, for an example. Address the following issues:
In each category, your variations should include one with a visually stronger figure, one where figure and ground are closely related, and one in which the ground is stronger.
If you are using gouache, follow the mixing procedures described in Hornung P.1-6, with your palette consisting of the six co-primaries listed on p. 6. plus white. The studies should be done on watercolor paper or light Bristol board, using a #4 watercolor brush.
Figure 1: Changing ground in a simple composition.
with the three variables of color:
Part Two: Color Use in the Cave
We have prepared a simple figure/ground composition in the Cave that you will load, adjust, and re-save. First, run cs237-setup-asgn4 from your account to create a course/cs237/asgn4 directory and copy the support files to it. Then cd to that directory and run cavepainting with the command “cavepainting cave glueconfig-asgn4”. You will see a “painting” where each wall of the Cave has different foreground and background elements. Each of these elements is a CavePainting object, so you can select it by holding down the 2nd button from the left on the wand and moving the wand on top of the object. Once the object is selected (a white bounding box appears around it) release the selection button. Now, you can pop up the color picker with the top button on the stylus. Move the stylus through the color space to select a new color for the object. Once you have a color you like, press the top stylus button again to keep that color for the selected object.
this part of the assignment, you should recolor the three foreground/background
situations in the asgn4 painting that you are given to again create a
distinction between the foreground and the background. For the foreground/background pair on the
left wall of the Cave, make the foreground visually stronger. For the pair on the front wall of the Cave,
make the figure and the ground closely related.
For the pair on the right wall of the Cave, make the ground stronger
than the figure. Use something that you
learned from Part One of the assignment, but this time feel
free to vary any combination of
Of course, save your revised color choices to a file, by pressing the “S” key on clio’s keyboard. Remember to place your mouse in the Buttons Keyboard window. Rename this file with “mv saved-painting.cps my-asgn4.cps” and edit the LOAD_PAINTING line the glueconfig-asgn4 file to load my-asgn4.cps. Test loading up your painting again before class.
Use the same program that you did for assignment 2, just use the images you created for this assignment and save to a different VRML file.
o Read four papers and design readings.
o Created 15 variations of figure/ground composition in 2 colors.
o Answered assignment questions.
----- If you do Part 2 -----
o Ran cs237-setup-asgn4
o Started CavePainting with glueconfig-asgn4
o Created 3 variations of figure/ground composition and saved to a file.
o Renamed saved-painting.cps to something more appropriate.
o Tested loading your saved painting.
part 2 in the Cave (optional)