void nxgl_rectunion(FAR struct nxgl_rect_s *dest,
FAR const struct nxgl_rect_s *src1,
FAR const struct nxgl_rect_s *src2)
{
dest->pt1.x = ngl_min(src1->pt1.x, src2->pt1.x);
dest->pt1.y = ngl_min(src1->pt1.y, src2->pt1.y);
dest->pt2.x = ngl_max(src1->pt2.x, src2->pt2.x);
dest->pt2.y = ngl_max(src1->pt2.y, src2->pt2.y);
}
void nxbe_filltrapezoid(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *clip,
FAR const struct nxgl_trapezoid_s *trap,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
struct nxbe_filltrap_s info;
struct nxgl_rect_s remaining;
int i;
#ifdef CONFIG_DEBUG
if (!wnd || !trap)
{
return;
}
#endif
/* Offset the trapezoid by the window origin to position it within
* the framebuffer region
*/
nxgl_trapoffset(&info.trap, trap, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Create a bounding box that contains the trapezoid */
remaining.pt1.x = b16toi(ngl_min(info.trap.top.x1, info.trap.bot.x1));
remaining.pt1.y = info.trap.top.y;
remaining.pt2.x = b16toi(ngl_max(info.trap.top.x2, info.trap.bot.x2));
remaining.pt2.y = info.trap.bot.y;
/* Clip to any user specified clipping window */
if (clip)
{
struct nxgl_rect_s tmp;
nxgl_rectoffset(&tmp, clip, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
nxgl_rectintersect(&remaining, &remaining, &tmp);
}
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, &remaining, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
if (!nxgl_nullrect(&remaining))
{
info.cops.visible = nxbe_clipfilltrapezoid;
info.cops.obscured = nxbe_clipnull;
/* Then process each color plane */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
info.color = color[i];
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
}
