A: |
If all coordinates of clip area are known in advance (for example 5, 5, 90, 70),
do this:
FillTriangle (10, 10, 10, 50, 50, 50, &(SCR_RECT){{5, 5, 90, 70}}, A_NORMAL);
or, using "standard" C (i.e. without GNU extensions):
SCR_RECT area = {{5, 5, 90, 70}}; // somewhere in the declaration part
...
FillTriangle (10, 10, 10, 50, 50, 50, &area, A_NORMAL);
Note that double braces are necessary because SCR_RECT
is an union.
If coordinates are not known in advance, for examples if they are in
integer variables a, b, c and d, you can do this:
SCR_RECT area;
...
area.xy.x0 = a;
area.xy.y0 = b;
area.xy.x1 = c;
area.xy.y1 = d;
FillTriangle (10, 10, 10, 50, 50, 50, &area, A_NORMAL);
or, much simpler, using GNU C extensions:
FillTriangle (10, 10, 10, 50, 50, 50, &(SCR_RECT){{a, b, c, d}}, A_NORMAL);
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