15   img->clip[0] = PetscClipInterval(x, 0, img->w - 1); /* xmin   */  in PetscImageSetClip()
16   img->clip[1] = PetscClipInterval(y, 0, img->h - 1); /* ymin   */  in PetscImageSetClip()
17   img->clip[2] = PetscClipInterval(x + w, 0, img->w); /* xmax+1 */  in PetscImageSetClip()
18   img->clip[3] = PetscClipInterval(y + h, 0, img->h); /* ymax+1 */  in PetscImageSetClip()
23   int x, xs = img->clip[0], xe = img->clip[2];  in PetscImageClear()
26     for (x = xs; x < xe; x++) img->buffer[y * img->w + x] = 0;  in PetscImageClear()
31   if (x < img->clip[0] || x >= img->clip[2]) return;  in PetscImageDrawPixel()
40     if (x_2 - x_1 < 0) {  in PetscImageDrawLine()
48     if (y_2 - y_1 < 0) {  in PetscImageDrawLine()
56     int dx = PetscAbs(x_2 - x_1), sx = (x_2 - x_1) >= 0 ? +1 : -1;  in PetscImageDrawLine()
57     int dy = PetscAbs(y_2 - y_1), sy = (y_2 - y_1) >= 0 ? +1 : -1;  in PetscImageDrawLine()
77   int xs = PetscMax(x, img->clip[0]), xe = PetscMin(x + w, img->clip[2]);  in PetscImageDrawRectangle()
88   for (x = 0, y = h, s = 2 * b2 + a2 * (1 - 2 * h); b2 * x <= a2 * y; x++) {  in PetscImageDrawEllipse()
91     if (s >= 0) {  in PetscImageDrawEllipse()
97   for (x = w, y = 0, s = 2 * a2 + b2 * (1 - 2 * w); a2 * y <= b2 * x; y++) {  in PetscImageDrawEllipse()
100     if (s >= 0) {  in PetscImageDrawEllipse()
111   const int xmin = img->clip[0], xmax = img->clip[2] - 1;  in PetscImageDrawTriangle()
115   int       lc, rc = 0, lx, rx = 0, xx, y, c;  in PetscImageDrawTriangle()
135   } while (0)  in PetscImageDrawTriangle()
158   R_y2_y1 = (y_2 != y_1) ? one / ((float)(y_2 - y_1)) : 0;  in PetscImageDrawTriangle()
159   R_y3_y1 = (y_3 != y_1) ? one / ((float)(y_3 - y_1)) : 0;  in PetscImageDrawTriangle()
202   R_y3_y1 = (y_3 != y_1) ? one / ((float)(y_3 - y_1)) : 0;  in PetscImageDrawTriangle()
203   R_y3_y2 = (y_3 != y_2) ? one / ((float)(y_3 - y_2)) : 0;  in PetscImageDrawTriangle()
240   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /*   */
241   {0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x08, 0x00, 0x00}, /* ! */
242   {0x00, 0x14, 0x14, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* " */
243   {0x00, 0x14, 0x14, 0x3E, 0x14, 0x3E, 0x14, 0x14, 0x00, 0x00}, /* # */
244   {0x00, 0x08, 0x1C, 0x28, 0x1C, 0x0A, 0x1C, 0x08, 0x00, 0x00}, /* $ */
245   {0x00, 0x12, 0x2A, 0x14, 0x08, 0x14, 0x2A, 0x24, 0x00, 0x00}, /* % */
246   {0x00, 0x10, 0x28, 0x28, 0x10, 0x2A, 0x24, 0x1A, 0x00, 0x00}, /* & */
247   {0x00, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ' */
248   {0x00, 0x04, 0x08, 0x10, 0x10, 0x10, 0x08, 0x04, 0x00, 0x00}, /* ( */
249   {0x00, 0x10, 0x08, 0x04, 0x04, 0x04, 0x08, 0x10, 0x00, 0x00}, /*) */
250   {0x00, 0x00, 0x22, 0x14, 0x3E, 0x14, 0x22, 0x00, 0x00, 0x00}, /* * */
251   {0x00, 0x00, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x00, 0x00}, /* + */
252   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x08, 0x10, 0x00}, /* , */
253   {0x00, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x00, 0x00}, /* - */
254   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x1C, 0x08, 0x00}, /* . */
255   {0x00, 0x02, 0x02, 0x04, 0x08, 0x10, 0x20, 0x20, 0x00, 0x00}, /* / */
256   {0x00, 0x08, 0x14, 0x22, 0x22, 0x22, 0x14, 0x08, 0x00, 0x00}, /* 0 */
257   {0x00, 0x08, 0x18, 0x28, 0x08, 0x08, 0x08, 0x3E, 0x00, 0x00}, /* 1 */
258   {0x00, 0x1C, 0x22, 0x02, 0x0C, 0x10, 0x20, 0x3E, 0x00, 0x00}, /* 2 */
259   {0x00, 0x3E, 0x02, 0x04, 0x0C, 0x02, 0x22, 0x1C, 0x00, 0x00}, /* 3 */
260   {0x00, 0x04, 0x0C, 0x14, 0x24, 0x3E, 0x04, 0x04, 0x00, 0x00}, /* 4 */
261   {0x00, 0x3E, 0x20, 0x2C, 0x32, 0x02, 0x22, 0x1C, 0x00, 0x00}, /* 5 */
262   {0x00, 0x0C, 0x10, 0x20, 0x2C, 0x32, 0x22, 0x1C, 0x00, 0x00}, /* 6 */
263   {0x00, 0x3E, 0x02, 0x04, 0x04, 0x08, 0x10, 0x10, 0x00, 0x00}, /* 7 */
264   {0x00, 0x1C, 0x22, 0x22, 0x1C, 0x22, 0x22, 0x1C, 0x00, 0x00}, /* 8 */
265   {0x00, 0x1C, 0x22, 0x26, 0x1A, 0x02, 0x04, 0x18, 0x00, 0x00}, /* 9 */
266   {0x00, 0x00, 0x08, 0x1C, 0x08, 0x00, 0x08, 0x1C, 0x08, 0x00}, /* : */
267   {0x00, 0x00, 0x08, 0x1C, 0x08, 0x00, 0x0C, 0x08, 0x10, 0x00}, /* } */
268   {0x00, 0x02, 0x04, 0x08, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00}, /* < */
269   {0x00, 0x00, 0x00, 0x3E, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x00}, /* = */
270   {0x00, 0x10, 0x08, 0x04, 0x02, 0x04, 0x08, 0x10, 0x00, 0x00}, /* > */
271   {0x00, 0x1C, 0x22, 0x04, 0x08, 0x08, 0x00, 0x08, 0x00, 0x00}, /* ? */
272   {0x00, 0x1C, 0x22, 0x26, 0x2A, 0x2C, 0x20, 0x1C, 0x00, 0x00}, /* @ */
273   {0x00, 0x08, 0x14, 0x22, 0x22, 0x3E, 0x22, 0x22, 0x00, 0x00}, /* A */
274   {0x00, 0x3C, 0x12, 0x12, 0x1C, 0x12, 0x12, 0x3C, 0x00, 0x00}, /* B */
275   {0x00, 0x1C, 0x22, 0x20, 0x20, 0x20, 0x22, 0x1C, 0x00, 0x00}, /* C */
276   {0x00, 0x3C, 0x12, 0x12, 0x12, 0x12, 0x12, 0x3C, 0x00, 0x00}, /* D */
277   {0x00, 0x3E, 0x20, 0x20, 0x3C, 0x20, 0x20, 0x3E, 0x00, 0x00}, /* E */
278   {0x00, 0x3E, 0x20, 0x20, 0x3C, 0x20, 0x20, 0x20, 0x00, 0x00}, /* F */
279   {0x00, 0x1C, 0x22, 0x20, 0x20, 0x26, 0x22, 0x1C, 0x00, 0x00}, /* G */
280   {0x00, 0x22, 0x22, 0x22, 0x3E, 0x22, 0x22, 0x22, 0x00, 0x00}, /* H */
281   {0x00, 0x1C, 0x08, 0x08, 0x08, 0x08, 0x08, 0x1C, 0x00, 0x00}, /* I */
282   {0x00, 0x0E, 0x04, 0x04, 0x04, 0x04, 0x24, 0x18, 0x00, 0x00}, /* J */
283   {0x00, 0x22, 0x24, 0x28, 0x30, 0x28, 0x24, 0x22, 0x00, 0x00}, /* K */
284   {0x00, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x3E, 0x00, 0x00}, /* L */
285   {0x00, 0x22, 0x22, 0x36, 0x2A, 0x22, 0x22, 0x22, 0x00, 0x00}, /* M */
286   {0x00, 0x22, 0x22, 0x32, 0x2A, 0x26, 0x22, 0x22, 0x00, 0x00}, /* N */
287   {0x00, 0x1C, 0x22, 0x22, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x00}, /* O */
288   {0x00, 0x3C, 0x22, 0x22, 0x3C, 0x20, 0x20, 0x20, 0x00, 0x00}, /* P */
289   {0x00, 0x1C, 0x22, 0x22, 0x22, 0x22, 0x2A, 0x1C, 0x02, 0x00}, /* Q */
290   {0x00, 0x3C, 0x22, 0x22, 0x3C, 0x28, 0x24, 0x22, 0x00, 0x00}, /* R */
291   {0x00, 0x1C, 0x22, 0x20, 0x1C, 0x02, 0x22, 0x1C, 0x00, 0x00}, /* S */
292   {0x00, 0x3E, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00}, /* T */
293   {0x00, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x00}, /* U */
294   {0x00, 0x22, 0x22, 0x22, 0x14, 0x14, 0x14, 0x08, 0x00, 0x00}, /* V */
295   {0x00, 0x22, 0x22, 0x22, 0x2A, 0x2A, 0x36, 0x22, 0x00, 0x00}, /* W */
296   {0x00, 0x22, 0x22, 0x14, 0x08, 0x14, 0x22, 0x22, 0x00, 0x00}, /* X */
297   {0x00, 0x22, 0x22, 0x14, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00}, /* Y */
298   {0x00, 0x3E, 0x02, 0x04, 0x08, 0x10, 0x20, 0x3E, 0x00, 0x00}, /* Z */
299   {0x00, 0x1C, 0x10, 0x10, 0x10, 0x10, 0x10, 0x1C, 0x00, 0x00}, /* [ */
300   {0x00, 0x20, 0x20, 0x10, 0x08, 0x04, 0x02, 0x02, 0x00, 0x00}, /* \ */
301   {0x00, 0x1C, 0x04, 0x04, 0x04, 0x04, 0x04, 0x1C, 0x00, 0x00}, /* ] */
302   {0x00, 0x08, 0x14, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ^ */
303   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x00}, /* _ */
304   {0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ` */
305   {0x00, 0x00, 0x00, 0x1C, 0x02, 0x1E, 0x22, 0x1E, 0x00, 0x00}, /* a */
306   {0x00, 0x20, 0x20, 0x2C, 0x32, 0x22, 0x32, 0x2C, 0x00, 0x00}, /* b */
307   {0x00, 0x00, 0x00, 0x1C, 0x22, 0x20, 0x22, 0x1C, 0x00, 0x00}, /* c */
308   {0x00, 0x02, 0x02, 0x1A, 0x26, 0x22, 0x26, 0x1A, 0x00, 0x00}, /* d */
309   {0x00, 0x00, 0x00, 0x1C, 0x22, 0x3E, 0x20, 0x1C, 0x00, 0x00}, /* e */
310   {0x00, 0x0C, 0x12, 0x10, 0x3C, 0x10, 0x10, 0x10, 0x00, 0x00}, /* f */
311   {0x00, 0x00, 0x00, 0x1E, 0x22, 0x22, 0x1E, 0x02, 0x22, 0x1C}, /* g */
312   {0x00, 0x20, 0x20, 0x2C, 0x32, 0x22, 0x22, 0x22, 0x00, 0x00}, /* h */
313   {0x00, 0x08, 0x00, 0x18, 0x08, 0x08, 0x08, 0x1C, 0x00, 0x00}, /* i */
314   {0x00, 0x02, 0x00, 0x06, 0x02, 0x02, 0x02, 0x12, 0x12, 0x0C}, /* j */
315   {0x00, 0x20, 0x20, 0x22, 0x24, 0x38, 0x24, 0x22, 0x00, 0x00}, /* k */
316   {0x00, 0x18, 0x08, 0x08, 0x08, 0x08, 0x08, 0x1C, 0x00, 0x00}, /* l */
317   {0x00, 0x00, 0x00, 0x34, 0x2A, 0x2A, 0x2A, 0x22, 0x00, 0x00}, /* m */
318   {0x00, 0x00, 0x00, 0x2C, 0x32, 0x22, 0x22, 0x22, 0x00, 0x00}, /* n */
319   {0x00, 0x00, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x00}, /* o */
320   {0x00, 0x00, 0x00, 0x2C, 0x32, 0x22, 0x32, 0x2C, 0x20, 0x20}, /* p */
321   {0x00, 0x00, 0x00, 0x1A, 0x26, 0x22, 0x26, 0x1A, 0x02, 0x02}, /* q */
322   {0x00, 0x00, 0x00, 0x2C, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00}, /* r */
323   {0x00, 0x00, 0x00, 0x1C, 0x20, 0x1C, 0x02, 0x3C, 0x00, 0x00}, /* s */
324   {0x00, 0x10, 0x10, 0x3C, 0x10, 0x10, 0x12, 0x0C, 0x00, 0x00}, /* t */
325   {0x00, 0x00, 0x00, 0x22, 0x22, 0x22, 0x26, 0x1A, 0x00, 0x00}, /* u */
326   {0x00, 0x00, 0x00, 0x22, 0x22, 0x14, 0x14, 0x08, 0x00, 0x00}, /* v */
327   {0x00, 0x00, 0x00, 0x22, 0x22, 0x2A, 0x2A, 0x14, 0x00, 0x00}, /* w */
328   {0x00, 0x00, 0x00, 0x22, 0x14, 0x08, 0x14, 0x22, 0x00, 0x00}, /* x */
329   {0x00, 0x00, 0x00, 0x22, 0x22, 0x26, 0x1A, 0x02, 0x22, 0x1C}, /* y */
330   {0x00, 0x00, 0x00, 0x3E, 0x04, 0x08, 0x10, 0x3E, 0x00, 0x00}, /* z */
331   {0x00, 0x06, 0x08, 0x04, 0x18, 0x04, 0x08, 0x06, 0x00, 0x00}, /* { */
332   {0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00}, /* | */
333   {0x00, 0x18, 0x04, 0x08, 0x06, 0x08, 0x04, 0x18, 0x00, 0x00}, /* } */
334   {0x00, 0x12, 0x2A, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ~ */
335   {0x00, 0x2A, 0x00, 0x22, 0x00, 0x22, 0x00, 0x2A, 0x00, 0x00}, /* ASCII 127 */
341   for (i = 0; i < th; i++) {  in PetscImageDrawText()
342     for (k = 0; text[k]; k++) {  in PetscImageDrawText()
344       for (j = 0; j < tw; j++) {  in PetscImageDrawText()