/**
* Add used area (circle) near target object excluded from possible searcher position
*
*
* @param size Size of used circle
* @param angle Angle of used circle center point from target-searcher line
* @param dist Distance from target object center point to used circle center point
*
* Used circles data stored as projections to searcher dist size circle as angle coordinate and half angle size
*/
void ObjectPosSelector::AddUsedArea(float size, float angle, float dist)
{
float sr_dist = size + m_searcherSize;
// by Law of cosines, angle of searcher/used centers
float sr_angle = acos((m_searcherDist * m_searcherDist + dist * dist - sr_dist * sr_dist) / (2 * m_searcherDist * dist));
// skip some unexpected results.
if (!finite(sr_angle) || sr_angle <= 0)
return;
if (angle >= 0)
m_UsedAreaLists[USED_POS_PLUS].insert(UsedArea(angle, sr_angle));
else
m_UsedAreaLists[USED_POS_MINUS].insert(UsedArea(-angle, sr_angle));
}
/**
* Add used area (circle) near target object excluded from possible searcher position
*
*
* @param obj Object that occupies area
* @param angle Angle of used circle center point from target-searcher line
* @param dist Distance from target object center point to used circle center point
*
* Used circles data stored as projections to searcher dist size circle as angle coordinate and half angle size
*/
void ObjectPosSelector::AddUsedArea(WorldObject const* obj, float angle, float dist)
{
MANGOS_ASSERT(obj);
// skip some unexpected results.
if (dist == 0.0f)
return;
// (half) angle that obj occupies
float sr_angle = atan(OCCUPY_POS_ANGLE_ATAN_FACTOR * obj->GetObjectBoundingRadius() / dist);
if (angle >= 0)
m_UsedAreaLists[USED_POS_PLUS].insert(UsedArea(angle, OccupiedArea(sr_angle, obj)));
else
m_UsedAreaLists[USED_POS_MINUS].insert(UsedArea(-angle, OccupiedArea(sr_angle, obj)));
}
