void
sObstructionMap::RemoveSegmentByPoint(int x, int y)
{
// if there aren't any segments, don't do anything
if (m_Segments.size() == 0) {
return;
}
// find minimum distance
double distance = DistanceToSegment(x, y, 0);
int point = 0;
for (int i = 1; i < m_Segments.size(); i++) {
double new_distance = DistanceToSegment(x, y, i);
if (new_distance < distance) {
distance = new_distance;
point = i;
}
}
// remove that point
RemoveSegment(point);
}
void SectionSelector::SelectSection(SelectionTracker* tracker, const SectionInfo& si)
{
if(!si.bb.IsInside(tracker->GetPoint())) return;
const Vector2d* last = nullptr;
for(const Vector2d& p : si.pixels)
{
if(last == nullptr) { last = &p; continue; }
Vector2d nearest;
double distanceSeg = DistanceToSegment(tracker->GetPoint(), *last, p, &nearest);
if(tracker->Validate(distanceSeg, this))
{
mSection = si.section;
mNearest = nearest;
}
last = &p;
}
}
void WayPointSelector::SelectWayPoint(SelectionTracker* tracker, const SectionInfo& si)
{
if(!si.bb.IsInside(tracker->GetPoint())) return;
const Vector2d* last = nullptr;
Section::LocationList::const_iterator it = si.section->GetLocations().begin();
for(const Vector2d& p : si.pixels)
{
if(last == nullptr) { last = &p; it++; continue; }
Vector2d nearest;
double distanceSeg = DistanceToSegment(tracker->GetPoint(), *last, p, &nearest);
if(tracker->Validate(distanceSeg, this))
{
delete mWayPoint;
mWayPoint = new WayPoint(si.section, it - 1, tracker->GetViewport()->PixelToLocation(nearest));
}
last = &p;
it++;
}
}
