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Show All 31 Lines		29	/*
32	from "Graphics Gems", Academic Press, 1990	32		from "Graphics Gems", Academic Press, 1990
33		33
34	http://tog.acm.org/resources/GraphicsGems/gems/FitCurves.c	34		http://tog.acm.org/resources/GraphicsGems/gems/FitCurves.c
35	http://tog.acm.org/resources/GraphicsGems/gems/README	35		http://tog.acm.org/resources/GraphicsGems/gems/README
36	*/	36		*/
37		37
38	class FitVector {	38		class FitVector {
39	public:	39		public:
40	FitVector(const QPointF &p) {	40		FitVector(const QPointF &p)
41	m_X = p.x();	41		: m_X(p.x())
42	m_Y = p.y();	42		, m_Y(p.y())
		43		{
43	}	44		}
44		45
45	FitVector() {	46		FitVector()
46	m_X = 0;	47		: m_X(0)
47	m_Y = 0;	48		, m_Y(0)
		49		{
48	}	50		}
49		51
50	FitVector(const QPointF &a, const QPointF &b) {	52		FitVector(const QPointF &a, const QPointF &b)
51	m_X = a.x() - b.x();	53		: m_X(a.x() - b.x())
52	m_Y = a.y() - b.y();	54		, m_Y(a.y() - b.y())
		55		{
53	}	56		}
54		57
55	void normalize() {	58		void normalize() {
56	qreal len = length();	59		qreal len = length();
57	if (qFuzzyCompare(len, qreal(0.0))) {	60		if (qFuzzyCompare(len, qreal(0.0))) {
58	return;	61		return;
59	}	62		}
60	m_X /= len; m_Y /= len;	63		m_X /= len; m_Y /= len;
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