//deal with face that must be clipped
bool must_clip_flat_face(int nv,g3s_codes cc)
{
int i;
bool ret=0;
g3s_point **bufptr;
bufptr = clip_polygon(Vbuf0,Vbuf1,&nv,&cc);
if (nv>0 && !(cc.uor&CC_BEHIND) && !cc.uand) {
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW) {
ret = 1;
goto free_points;
}
Vertex_list[i*2] = p->p3_sx;
Vertex_list[i*2+1] = p->p3_sy;
}
(*flat_drawer_ptr)(nv,(int *)Vertex_list);
}
else
ret=1;
//free temp points
free_points:
;
for (i=0;i<nv;i++)
if (Vbuf1[i]->p3_flags & PF_TEMP_POINT)
free_temp_point(Vbuf1[i]);
// Assert(free_point_num==0);
return ret;
}
//------------------------------------------------------------------------------
//deal with face that must be clipped
bool MustClipFlatFace (int nv, g3sCodes cc)
{
int i;
bool ret=0;
g3sPoint **bufptr;
bufptr = clip_polygon (Vbuf0, Vbuf1, &nv, &cc);
if (nv>0 && ! (cc.or&CC_BEHIND) && !cc.and) {
for (i=0;i<nv;i++) {
g3sPoint *p = bufptr[i];
if (! (p->p3_flags & PF_PROJECTED))
G3ProjectPoint (p);
if (p->p3_flags & PF_OVERFLOW) {
ret = 1;
goto free_points;
}
polyVertList[i*2] = p->p3_screen.x;
polyVertList[i*2+1] = p->p3_screen.y;
}
(*flat_drawer_ptr) (nv, (int *)polyVertList);
}
else
ret=1;
//D2_FREE temp points
free_points:
;
for (i=0;i<nv;i++)
if (Vbuf1[i]->p3_flags & PF_TEMP_POINT)
free_temp_point (Vbuf1[i]);
// Assert (free_point_num==0);
return ret;
}
void
item_bin_write_clipped(struct item_bin *ib, struct tile_parameter *param, struct item_bin_sink *out)
{
struct tile_data tile_data;
int i;
bbox((struct coord *)(ib+1), ib->clen/2, &tile_data.item_bbox);
tile_data.buffer[0]='\0';
tile_data.tile_depth=tile(&tile_data.item_bbox, NULL, tile_data.buffer, param->max, param->overlap, &tile_data.tile_bbox);
if (tile_data.tile_depth == param->max || tile_data.tile_depth >= param->min) {
item_bin_write_to_sink(ib, out, &tile_data);
return;
}
for (i = 0 ; i < 4 ; i++) {
struct rect clip_rect;
tile_data.buffer[tile_data.tile_depth]='a'+i;
tile_data.buffer[tile_data.tile_depth+1]='\0';
tile_bbox(tile_data.buffer, &clip_rect, param->overlap);
if (ib->type < type_area)
clip_line(ib, &clip_rect, param, out);
else
clip_polygon(ib, &clip_rect, param, out);
}
}
bool must_clip_tmap_face(int nv,g3s_codes cc,grs_bitmap *bm)
{
g3s_point **bufptr;
int i;
bufptr = clip_polygon(Vbuf0,Vbuf1,&nv,&cc);
if (nv && !(cc.uor&CC_BEHIND) && !cc.uand) {
for (i=0;i<nv;i++) {
g3s_point *p = bufptr[i];
if (!(p->p3_flags&PF_PROJECTED))
g3_project_point(p);
if (p->p3_flags&PF_OVERFLOW) {
Int3(); //should not overflow after clip
goto free_points;
}
}
(*tmap_drawer_ptr)(bm,nv,bufptr);
}
free_points:
;
for (i=0;i<nv;i++)
if (bufptr[i]->p3_flags & PF_TEMP_POINT)
free_temp_point(bufptr[i]);
// Assert(free_point_num==0);
return 0;
}