9   int            clip[4];         /* clip ranges    */  member
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()
24   int y, ys = img->clip[1], ye = img->clip[3];  in PetscImageClear()
31   if (x < img->clip[0] || x >= img->clip[2]) return;  in PetscImageDrawPixel()
32   if (y < img->clip[1] || y >= img->clip[3]) return;  in PetscImageDrawPixel()
77   int xs = PetscMax(x, img->clip[0]), xe = PetscMin(x + w, img->clip[2]);  in PetscImageDrawRectangle()
78   int ys = PetscMax(y, img->clip[1]), ye = PetscMin(y + h, img->clip[3]);  in PetscImageDrawRectangle()
111   const int xmin = img->clip[0], xmax = img->clip[2] - 1;  in PetscImageDrawTriangle()
112   const int ymin = img->clip[1], ymax = img->clip[3] - 1;  in PetscImageDrawTriangle()