class CCPoint
{
    float x;
    float y;
    CCPoint();
    CCPoint(float x, float y);
    CCPoint(const CCSize& size);
    CCPoint operator-(const CCPoint& right) const;
    CCPoint operator+(const CCPoint& right) const;
    CCPoint operator*(float a) const;
    CCPoint getMidpoint(const CCPoint& other) const;
    float dot(const CCPoint& other) const;
    float cross(const CCPoint& other) const;
    CCPoint getPerp() const;
    CCPoint getRPerp() const;
    CCPoint project(const CCPoint& other) const;
    CCPoint rotate(const CCPoint& other) const;
    CCPoint unrotate(const CCPoint& other) const;
    float getLengthSq() const;
    float getLength() const;
    float getDistance(const CCPoint& other) const;
    CCPoint normalize() const;
    float getAngle() const;
    CCPoint getClampPoint(const CCPoint& min_inclusive, const CCPoint& max_inclusive) const;
    CCPoint lerp(const CCPoint& other, float alpha) const;
    bool fuzzyEquals(const CCPoint& target, float variance) const;
    CCPoint rotateByAngle(const CCPoint& pivot, float angle) const;

    bool equals(const CCPoint & target) const ;
    static bool isLineIntersect(const CCPoint& A, const CCPoint& B,const CCPoint& C, const CCPoint& D,float* S, float* T);
    static bool isSegmentIntersect(const CCPoint& A, const CCPoint& B, const CCPoint& C, const CCPoint& D);
    static CCPoint getIntersectPoint(const CCPoint& A, const CCPoint& B, const CCPoint& C, const CCPoint& D);
    static CCPoint forAngle(const float a);
};

class CCSize
{
    float width;
    float height;
    CCSize();
    CCSize(float width, float height);

    bool equals(const CCSize & target) const;
};

class CCRect
{
    CCPoint origin;
    CCSize  size;
    CCRect();
    CCRect(float x, float y, float width, float height);

    float getMinX();
	float getMidX();
	float getMaxX();
	float getMinY();
	float getMidY();
	float getMaxY();
	bool equals(const CCRect & rect) const;
	bool containsPoint(const CCPoint & point) const;
	bool intersectsRect(const CCRect & rect) const;
};