Graphics. Lab 5. Transformation Viewport Clipping . Transformation Modeling -> translate (); rotate ();scale() Viewing -> lookat () ; Projection : Perspective Orthographic Viewport Clipping . Projections . There are two basic types of projections: Perspective:
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gluPerspective(fov_y, aspect_ratio, near, far)
… other modelview transformations …
*Note: dnear and dfar are the distances from camera position to near and far planes respectively. They should be positive.
glOrtho(left, right, bottom, top, near, far)
Notes : when Zeye equal with zfar ,the object will be Disappearance