答案结果是相机放置。事后证明,相机不应该像透视投影所需的那样从场景中退回。将相机放置在模型的边缘就可以了,并且剪裁平面(近,远)正常工作。
例如:
Z 100 *----------------------------------* | | | | 75 | | | | | | 50 | | | | | | 25 #################################### <-- Capture this slice of 5 units | | width @ z = 25 | | 0 *-----------------X----------------* Y 0 . 100 . . CAMERA is here at (50,0) near = 25 far = 30 (for width 5, ie: 25 + 5)