| 8 | #define CODE_TOP 8 |
| 9 | |
| 10 | uint8_t compute_code (int32_t x, int32_t y) { |
| 11 | uint8_t code = CODE_INSIDE; |
| 12 | |
| 13 | if (x < 0) { |
| 14 | code |= CODE_LEFT; |
| 15 | } else if (x > SCREEN_WIDTH) { |
| 16 | code |= CODE_RIGHT; |
| 17 | } else if (y < 0) { |
| 18 | code |= CODE_BOTTOM; |
| 19 | } else if (y > SCREEN_HEIGHT) { |
| 20 | code |= CODE_TOP; |
| 21 | } |
| 22 | |
| 23 | return code; |
| 24 | } |
| 25 | |
| 26 | |
| 27 | void render_triangle(struct triangle_32 &in) { |