The Billboard sample illustrates the billboarding technique. Rather than rendering complex 3D models (such as a high-polygon tree model), billboarding renders a 2D image of the model and rotates it to always face

The Billboard sample illustrates the billboarding technique. Rather than rendering complex 3D models (such as a high-polygon tree model), billboarding renders a 2D image of the model and rotates it to always face

billboard.cpp and billboard.h-An example of billboarding. A billboard is an object that always faces toward the eye

用openg 撰寫一全螢幕顯示billboarding 效果的3D 遊走程式,極具研究價值-With openg write a full-screen 3D effects billboarding walk program, great research value