lib/libvgl/simple.c

176 plot(VGLBitmap * object, int x, int y, int flag, u_long color)
222   /* Go round loop dx/4 times then plot last 0,1,2 or 3 pixels */
227   plot(object, x, y, reverse, color);
229     return;      /* plot only one pixel for zero length
231   plot(object, x1, y1, reverse, color);  /* plot first two points */
243         plot(object, x, y, reverse, color);
244         plot(object, ++x, y, reverse, color);
246         plot(object, x1, y1, reverse, color);
247         plot(object, --x1, y1, reverse, color);
252           plot(object, x, y, reverse, color);
253           plot(object, ++x, y += step, reverse,
256           plot(object, x1, y1, reverse, color);
257           plot(object, --x1, y1 -= step, reverse,
261           plot(object, x, y += step, reverse, color);
262           plot(object, ++x, y, reverse, color);
264           plot(object, x1, y1 -= step, reverse,
266           plot(object, --x1, y1, reverse, color);
272     /* plot last pattern */
275         plot(object, ++x, y, reverse, color);  /* pattern 1 */
277           plot(object, ++x, y, reverse, color);
279           plot(object, --x1, y1, reverse, color);
282           plot(object, ++x, y, reverse, color);  /* pattern 2  */
284             plot(object, ++x, y += step, reverse, color);
286             plot(object, --x1, y1, reverse, color);
289           plot(object, ++x, y += step, reverse, color);
291             plot(object, ++x, y, reverse, color);
293             plot(object, --x1, y1 -= step, reverse, color);
308         plot(object, x, y += step, reverse, color);
309         plot(object, ++x, y += step, reverse, color);
311         plot(object, x1, y1 -= step, reverse, color);
312         plot(object, --x1, y1 -= step, reverse, color);
317           plot(object, x, y, reverse, color);
318           plot(object, ++x, y += step, reverse,
322           plot(object, x1, y1, reverse, color);
323           plot(object, --x1, y1 -= step, reverse,
327           plot(object, x, y += step, reverse, color);
328           plot(object, ++x, y, reverse, color);
330           plot(object, x1, y1 -= step, reverse, color);
331           plot(object, --x1, y1, reverse, color);
336     /* plot last pattern */
339         plot(object, ++x, y += step, reverse, color);  /* pattern 4 */
341           plot(object, ++x, y += step, reverse,
344           plot(object, --x1, y1 -= step, reverse,
348           plot(object, ++x, y, reverse, color);  /* pattern 2  */
350             plot(object, ++x, y += step, reverse, color);
352             plot(object, --x1, y1, reverse, color);
355           plot(object, ++x, y += step, reverse, color);
357             plot(object, ++x, y, reverse, color);
360               plot(object, --x1, y1 -= step, reverse, color);
362               plot(object, --x1, y1, reverse, color);