Review:  Real World Windows and Viewports

• Automatically choosing the viewport that preserves aspect ratio of the real window (prevents distortion when mapped to the screen.)
• Using the reshaping function
  • to use default viewport of the newly reshaped window
  • to use the automatically determined viewport of the newly reshaped window that prevents distortion
• Tiling
• setting the viewport as a percentage of a normalized rectangle.
  

Making the Open GL commands more user-friendly

• the Scene (or Canvas) class -as described by Hill: Appendix 3
• collection of useful tools
• makefile

Managing Your Graphics Project Using a makefile

Cohen-Sutherland Line Clipping Algorithm Hill: Section 3.3

Parametric Representation for a Line Hill: Section 3.5

Morphing (tweening) Hill: Section 4.5.4

Other Tricks of the Trade

• Using double buffering
• Generating the points to be plotted, rather than assigning them
• Drawing Curved Lines, using PI for the parameter
• Starting and Stopping Animation with the Mouse
  • glutIdleFunc(idle)

REFERENCE(S):

Computer Graphics Using OpenGL (Hill):

• Chapter 3 (3.1 - 3.5)
• Section 4.5.4 Tweening for Art and Animation
• Section 4.2 Review of Vectors

OpenGL Manual/v.1.2: p. 129-130
GLUT Programming Interface:

/classes/cs3014/files/week3/picking
/classes/cs3014/files/week3/spinning
/classes/cs3014/demos/viewports
/classes/cs3014/canvas