LineSegment.h

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#ifndef G3D_LINESEGMENT_H
#define G3D_LINESEGMENT_H

#include "G3D/platform.h"
#include "G3D/Vector3.h"

namespace G3D {

class LineSegment {
protected:

 Point3 _point;

 Vector3 direction;

 LineSegment(const Point3& __point, const Vector3& _direction) : _point(__point), direction(_direction) {
 }

public:

 LineSegment() : _point(Point3::zero()), direction(Vector3::zero()) {}

 LineSegment(class BinaryInput& b);
 
 void serialize(class BinaryOutput& b) const;
 
 void deserialize(class BinaryInput& b);

 virtual ~LineSegment() {}
 
 static LineSegment fromTwoPoints(const Point3 &point1, const Point3 &point2) {
 return LineSegment(point1, point2 - point1);
 }

 Point3 point(int i) const;

 Point3 midpoint() const {
 return _point + direction * 0.5f;
 }

 inline float length() const {
 return direction.magnitude();
 }

 Point3 closestPoint(const Point3 &point) const;

 double distance(const Point3& p) const {
 return (closestPoint(p) - p).magnitude();
 }

 double distanceSquared(const Point3& p) const {
 return (closestPoint(p) - p).squaredMagnitude();
 }

 bool intersectsSolidSphere(const class Sphere& s) const;

 Point3 randomPoint() const;

};


class LineSegment2D {
private:

 Point2 m_origin;

 Vector2 m_direction;

 float m_length;

public:
 
 LineSegment2D() {}

 static LineSegment2D fromTwoPoints(const Point2& p0, const Vector2& p1);

 Point2 intersection(const LineSegment2D& other) const;

 Point2 point(int i) const;

 Point2 closestPoint(const Point2& Q) const;

 float distance(const Point2& p) const;

 float length() const;
};

} // namespace


#endif