![]() |
OCS - object coordinate system WCS - world coordinate system VCS - viewing coordinate system CCS - clipping coordinate system NDCS - normalized device coordinate system DCS - device coordinate system |

| modelling transformation modelview matrix |
glTranslatef() glRotatef() glScalef() |
| viewing transformation modelview matrix |
gluLookAt() |
| projection transformation projection matrix |
glFrustum() gluPerspective() glOrtho() gluOrtho2D() |
| viewing transformation | glViewport() |