Interactive Computer Graphics HW1

R96944043 周伯相

http://www.cmlab.csie.ntu.edu.tw/~zho/

CSIE.TRI with viewport clipping no line clipping.	FIGHTER.TRI with viewport and line clipping

Homework #1

Requirements

• Load a 3D model file of TRI format. Draw it in wireframe mode and view it in perspective view.
• Provide object rotation mode and camera rotation mode, and implement basic transformations such as rotation, translation, scaling and shear.
• The camera (eye) can be moved around and into the model.
• Implement back-face culling.(optional)
• Implement viewport clipping. Try to show the difference between clipping and no-clipping.
• Implement transformation of perspective project matrix.
• Interactive with keyboard or mouse.

Bonus

• Virtual trackball control.
• Program performance.
• Good user interface.

Program brief

• Stand-alone executable program created & compiled by visual c++ 2005, R96944043_HW1.exe with library zlCore, zlGLRDev , zlUI, zlCollide
• Using opengl for graphic, and draw line only.
• Drag tri file from explorer.exe into window of program to change model.
• Key 1 : Change Render Mode
1. Hardware Mode : Draw and transform as formula polygone by OpenGL, and use glPolygonMode with GL_LINE to draw it in wireframe mode.
2. Software Transform Mode : Perform as requirements of homework #1.
   
   
• Key 2: Change Camera Mode
  1. View Object Center:
  • Left mouse button to rotate
  • Right mouse button to zoom in/out
  2. View First Person (walk through)
  • Right mouse button to move forward
    
    
• Key B: switch of back-face culling.
• Key C: switch of viewport clipping.
• Key Q: Moving object by dragging a helper.
• Key W: Rotate object by dragging a helper.
• Key E: Scale object by dragging a helper
• Key S: Perform shear transform
• The main control panel will slide in when move mouse cursor to right of the program window.

Result