Class 41 — April 26
Taking care of business
Take care of our world — For others need to follow — The path that you make
Look both ways
If you have not already done so, please fill out survey
Agenda
- Resolve any outstanding issues.
Notices
- TA-lead review in Olsson 120 on Wednesday starting at 2 PM.
Links
- The module provides two functions
loc(), and create_reflection(). When run the module does a single test reflection
- Function
create_reflection( original ) is already implemented. The function makes use of loc() in returning a new image whose left side is that of original and whose right is a reflection of the left side.
- Function
loc( img, spot )
- If image coordinate
spot lies on the lefthand side of img, the function returns spot; otherwise, the function returns the reflection location of spot with respect to the vertical center axis of img.
- The module provides two functions
legal(), offset(), and create_color_shift(). When run the module does a single test image color shifting.
 |  |
| | Color shift with x = 25, y = -50, and y = 75 |
- Returns an integer based on integer
v. If v is negative, the function returns 0. If instead v exceeds 255, the function returns 255. Otherwise, the function returns v. Thus, the return value is always a legal value for an individual RGB level.
- Function
offset( pixel, x, y, z )
- Returns the new color
(legal(nr), legal(ng), legal(nb )), where nr, ng, and nb are the values gotten by decrementing the RGB values of pixel respectively by the amounts x, y, and z.
- Function
create_color_shift( original, x, y, z )
- Returns a new image that is based on
original, where a pixel in the new image is obtained by using offset() on the corresponding pixel in original with offset amounts x, y, and z.
