libs/agg/agg_rasterizer_sl_clip.h

129         void clip_box(coord_type x1, coord_type y1, coord_type x2, coord_type y2)
131             m_clip_box = rect_type(x1, y1, x2, y2);
149                                     coord_type x2, coord_type y2,
157                 ras.line(Conv::xi(x1), Conv::yi(y1), Conv::xi(x2), Conv::yi(y2));
169                 coord_type tx2 = x2;
174                     tx1 = x1 + Conv::mul_div(m_clip_box.y1-y1, x2-x1, y2-y1);
180                     tx1 = x1 + Conv::mul_div(m_clip_box.y2-y1, x2-x1, y2-y1);
186                     tx2 = x1 + Conv::mul_div(m_clip_box.y1-y1, x2-x1, y2-y1);
192                     tx2 = x1 + Conv::mul_div(m_clip_box.y2-y1, x2-x1, y2-y1);
204         void line_to(Rasterizer& ras, coord_type x2, coord_type y2)
208                 unsigned f2 = clipping_flags(x2, y2, m_clip_box);
213                     m_x1 = x2;
228                     line_clip_y(ras, x1, y1, x2, y2, f1, f2);
231                 case 1: // x2 > clip.x2
232                     y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
234                     line_clip_y(ras, x1, y1, m_clip_box.x2, y3, f1, f3);
235                     line_clip_y(ras, m_clip_box.x2, y3, m_clip_box.x2, y2, f3, f2);
238                 case 2: // x1 > clip.x2
239                     y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
241                     line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y3, f1, f3);
242                     line_clip_y(ras, m_clip_box.x2, y3, x2, y2, f3, f2);
245                 case 3: // x1 > clip.x2 && x2 > clip.x2
246                     line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y2, f1, f2);
249                 case 4: // x2 < clip.x1
250                     y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
256                 case 6: // x1 > clip.x2 && x2 < clip.x1
257                     y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
258                     y4 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
261                     line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y3, f1, f3);
262                     line_clip_y(ras, m_clip_box.x2, y3, m_clip_box.x1, y4, f3, f4);
267                     y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
270                     line_clip_y(ras, m_clip_box.x1, y3, x2, y2, f3, f2);
273                 case 9:  // x1 < clip.x1 && x2 > clip.x2
274                     y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
275                     y4 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
279                     line_clip_y(ras, m_clip_box.x1, y3, m_clip_box.x2, y4, f3, f4);
280                     line_clip_y(ras, m_clip_box.x2, y4, m_clip_box.x2, y2, f4, f2);
283                 case 12: // x1 < clip.x1 && x2 < clip.x1
292                          Conv::xi(x2),   Conv::yi(y2));
294             m_x1 = x2;
320         void clip_box(coord_type x1, coord_type y1, coord_type x2, coord_type y2) {}
324         void line_to(Rasterizer& ras, coord_type x2, coord_type y2)
326             ras.line(m_x1, m_y1, x2, y2);
327             m_x1 = x2;