36 static inline void PetscImageDrawLine(PetscImage img, int x_1, int y_1, int x_2, int y_2, int c)  in PetscImageDrawLine()  argument
40     if (x_2 - x_1 < 0) {  in PetscImageDrawLine()
41       int tmp = x_1;  in PetscImageDrawLine()
42       x_1     = x_2;  in PetscImageDrawLine()
45     while (x_1 <= x_2) PetscImageDrawPixel(img, x_1++, y_1, c);  in PetscImageDrawLine()
46   } else if (x_1 == x_2) {  in PetscImageDrawLine()
53     while (y_1 <= y_2) PetscImageDrawPixel(img, x_1, y_1++, c);  in PetscImageDrawLine()
56     int dx = PetscAbs(x_2 - x_1), sx = (x_2 - x_1) >= 0 ? +1 : -1;  in PetscImageDrawLine()
60       PetscImageDrawPixel(img, x_1, y_1, c);  in PetscImageDrawLine()
61       if (x_1 == x_2 && y_1 == y_2) break;  in PetscImageDrawLine()
65         x_1 += sx;  in PetscImageDrawLine()
108 static inline void PetscImageDrawTriangle(PetscImage img, int x_1, int y_1, int t_1, int x_2, int y…  in PetscImageDrawTriangle()  argument
119   if (x_1 < xmin && x_2 < xmin && x_3 < xmin) return;  in PetscImageDrawTriangle()
121   if (x_1 > xmax && x_2 > xmax && x_3 > xmax) return;  in PetscImageDrawTriangle()
137     SWAP(x_1, x_2);  in PetscImageDrawTriangle()
142     SWAP(x_1, x_3);  in PetscImageDrawTriangle()
157   x2_x1   = x_2 - x_1;  in PetscImageDrawTriangle()
160   x3_x1   = x_3 - x_1;  in PetscImageDrawTriangle()
168     lx    = (int)(lfrac * ((float)x2_x1) + (float)x_1);  in PetscImageDrawTriangle()
172     rx    = (int)(rfrac * ((float)x3_x1) + (float)x_1);  in PetscImageDrawTriangle()
196     x_1   = rx;  in PetscImageDrawTriangle()
199     x3_x1 = x_3 - x_1;  in PetscImageDrawTriangle()
216     rx    = (int)(rfrac * ((float)x3_x1) + (float)x_1);  in PetscImageDrawTriangle()