std::list<location_component*> environment::nearest(point2 postion, unsigned int radius)
{
std::list<location_component*> list;
m_space->find(postion.x(), postion.y(), radius, [&](int, int, location_component* component)
{
list.push_back(component);
});
return list;
}
double line2::distance_from_segment_to_point(point2 const& point) const
{
delta2 v = p2 - p1;
delta2 w = point - p1;
double c1 = w.dot(v);
if(c1 <= 0)
return point.distance(p1);
double c2 = v.dot(v);
if(c2 <= c1)
return point.distance(p2);
double b = c1 / c2;
point2 Pb = p1 + v * b;
return point.distance(Pb);
}
double line2::distance_from_line_to_point(point2 const& point) const
{
delta2 v = p2 - p1;
delta2 w = point - p1;
double c1 = w.dot(v);
double c2 = v.dot(v);
double b = c1 / c2;
point2 Pb = p1 + v * b;
return point.distance(Pb);
}
void AABB2D::AddPoint( const point2& p )
{
if ( p.x() > m_Max.x )
{
m_Max.x = p.x();
}
else if ( p.x() < m_Min.x )
{
m_Min.x = p.x();
}
if ( p.y() > m_Max.y )
{
m_Max.y = p.y();
}
else if ( p.y() < m_Min.y )
{
m_Min.y = p.y();
}
m_Len.x = std::abs(m_Max.x - m_Min.x);
m_Len.y = std::abs(m_Max.y - m_Min.y);;
}
int environment::distance(point2 const& a, point2 const& b) const
{
return a.king_distance(b);
}
Vec2 Point2toVec2( const point2& p )
{
return Vec2( p.x(), p.y() );
}
constexpr point2<T> inverted_scale(point2<T> a, vec2<T> b)
{
a.inverted_scale(b);
return a;
}
constexpr point2<T> scale(point2<T> a, vec2<T> b)
{
a.scale(b);
return a;
}
void VectorGraphics::arc_negative(point2 p, length r, plane_angle a1, plane_angle a2) {
cairo_arc_negative(cr(), p.x()/meters, p.y()/meters, r/meters, a1/radians, a2/radians);
}
void VectorGraphics::rectangle(point2 p1, point2 p2) {
cairo_rectangle(cr(), p1.x()/meters, p1.y()/meters, (p2.x()-p1.x())/meters, (p2.y()-p1.y())/meters);
}
void VectorGraphics::line_to(point2 p) {
cairo_line_to(cr(), p.x()/meters, p.y()/meters);
}