hgeLine.h

//
// Opal SDK 1.0 
// Copyright(C) 2009, Paul Blower
//

#ifndef HGELINE__
#define HGELINE__

#include <hgevector.h>
#include <hgerect.h>

#include "hgeShape.h"
#include "hgeIntersect.h"
#include "hgeCircle.h"


// hgeLine Class

class hgeLine : public hgeShape
{
public:

    hgeVector p1;
    hgeVector p2;

    // Returns the nearest point on the line to the given point
    hgeVector hgeLine::NearestPoint(hgeVector point);

    // Returns intersection between this line and another
    hgeIntersect Intersects(hgeLine *line);
    hgeIntersect Intersects(hgeLine line);

    // Returns intersection between this line and another
    hgeIntersect Intersects(hgeVector pos1, hgeVector pos2);

    // Returns intersection between this line a circle
    hgeIntersect Intersects(hgeCircle *circle);
    hgeIntersect Intersects(hgeCircle circle);

    // Returns rect surrounding line
    hgeRect Rect();

    // Returns lines length
    float Length()
    {
        return hgeVector(p2 - p1).Length();
    }

    // Returns angle of line against x-axis
    float Angle()
    {
        return hgeVector(p2 - p1).Angle();
    }

    // Constructor
    hgeLine() : hgeShape(HGESHAPE_LINE) { }
    hgeLine(hgeVector m_p1, hgeVector m_p2) : hgeShape(HGESHAPE_LINE)
    {
        p1 = m_p1;
        p2 = m_p2;
    }
    hgeLine(float m_p1x, float m_p1y,  float m_p2x, float m_p2y) : hgeShape(HGESHAPE_LINE)
    {
        p1 = hgeVector(m_p1x, m_p1y);
        p2 = hgeVector(m_p2x, m_p2y);
    }
};

#endif

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