/**
* Draws a single tile onto the screen
* Also changes the status from VISIBLE to
*/
void drawtile(struct tile* tile)
{
if(tile->texture.data == NULL)
return;
struct point topleft = world2screen(tile->left, tile->top);
struct point bottomright = world2screen(tile->right, tile->bottom);
float width = bottomright.x - topleft.x;
float height = bottomright.y - topleft.y;
DrawImg(topleft.x, topleft.y, width, height, tile->texture, tile->opacity);
//Draw extra copies of this tile to the left and to the right
//Should only happed if the view is so zoomed out that the world can be seen multiple times
//Draw copies to the left
float extratilesx = topleft.x - world_width;
while(extratilesx + width > 0)
{
DrawImg(extratilesx, topleft.y, width, height, tile->texture, tile->opacity);
extratilesx -= world_width;
}
//Draw copies to the right
extratilesx = topleft.x + world_width;
while(extratilesx < SCREEN_WIDTH) {
DrawImg(extratilesx, topleft.y, width, height, tile->texture, tile->opacity);
extratilesx += world_width;
}
}
bool VisObj::select_vertex(const CGLA::Vec2i& pos)
{
float d;
if(depth_pick(pos[0], pos[1], d))
{
Vec3d c;
float r;
bsphere(mani, c, r);
VertexID closest = InvalidVertexID;
double min_dist = DBL_MAX;
for(auto vid : mani.vertices())
{
Vec3d wp = world2screen(mani.pos(vid));
if(sqr_length(Vec2d(wp[0],wp[1])-Vec2d(pos))<100)
{
double dist = sqr_length(screen2world(pos[0], pos[1], d)-mani.pos(vid));
if(dist < min_dist)
{
min_dist = dist;
closest = vid;
}
}
}
if(closest != InvalidVertexID) {
vertex_selection.resize(mani.allocated_vertices(),0);
vertex_selection[closest] = !vertex_selection[closest];
active_selection = true;
post_create_display_list();
return true;
}
}
return false;
}
