again for CSC3260
if i follow the guideline in tuto notes
to handle the mouse projection from screen
to real OpenGL world coordinate
I WILL DIED Orz
this is a MUST in programming OpenGL's game
how come i need to build the function from seatch ??
so what you think as what you have
GLU already provide the buildin function for you...
before i know how to use it
i spend for more the one day to recall my pure maths...
AND STILL FAULT TO DO SO Orz
so... show time !!

















