/**
* Check if point is inside polgone.
* @param in *cp array of polygon vertex coordinates
* @param in count count of polygon vertexes
* @param in *c point coordinates
* @returns 1 - inside, 0 - outside
*/
int
geom_poly_point_inside(struct coord *cp, int count, struct coord *c)
{
int ret=0;
struct coord *last=cp+count-1;
while (cp < last) {
if ((cp[0].y > c->y) != (cp[1].y > c->y) &&
c->x < ((long long)cp[1].x-cp[0].x)*(c->y-cp[0].y)/(cp[1].y-cp[0].y)+cp[0].x) {
#if 0
fprintf(stderr," cross 0x%x,0x%x-0x%x,0x%x %dx%d",cp,cp[0].x,cp[0].y,cp[1].x,cp[1].y,cp[1].x-cp[0].x,c->y-cp[0].y);
printf("type=selected_line\n");
coord_print(projection_mg, &cp[0], stdout);
coord_print(projection_mg, &cp[1], stdout);
#endif
ret=!ret;
}
cp++;
}
return ret;
}
void
bookmarks_write_center_to_file(struct bookmarks *this_, char *file)
{
dbg(0,"EEnter\n");
FILE *f;
enum projection pro;
struct coord *center;
f = fopen(file, "w+");
if (f)
{
// save (pixel-on-screen width/2 height/2) screen center
struct coord_geo g22;
struct coord c22;
struct point p;
int width, height;
transform_get_size(this_->trans, &width, &height);
p.x=width/2;
p.y=height/2;
transform_reverse(this_->trans, &p, &c22);
//dbg(0,"%f, %f\n",a, b);
//dbg(0,"%d, %d\n",p.x, p.y);
// * transform_to_geo(projection_mg, &c22, &g22);
//dbg(0,"%d, %d, %f, %f\n",c22.x, c22.y, g22.lat, g22.lng);
// * result=g_strdup_printf("%f:%f",g22.lat,g22.lng);
// + center = transform_center(this_->trans);
pro = transform_get_projection(this_->trans);
// + coord_print(pro, center, f);
coord_print(pro, &c22, f);
fclose(f);
dbg(0,"******** write center to file *********\n");
}
else
{
perror(file);
}
dbg(0,"ready\n");
return;
}