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79 lines
1.5 KiB
C++
79 lines
1.5 KiB
C++
// This code is in the public domain -- castanyo@yahoo.es
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#ifndef NV_MATH_FITTING_H
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#define NV_MATH_FITTING_H
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#include <nvmath/Vector.h>
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namespace nv
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{
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/// 3D Line.
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struct Line3
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{
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/// Ctor.
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Line3() : m_origin(zero), m_direction(zero)
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{
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}
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/// Copy ctor.
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Line3(const Line3 & l) : m_origin(l.m_origin), m_direction(l.m_direction)
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{
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}
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/// Ctor.
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Line3(Vector3::Arg o, Vector3::Arg d) : m_origin(o), m_direction(d)
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{
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}
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/// Normalize the line.
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void normalize()
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{
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m_direction = nv::normalize(m_direction);
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}
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/// Project a point onto the line.
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Vector3 projectPoint(Vector3::Arg point) const
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{
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nvDebugCheck(isNormalized(m_direction));
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Vector3 v = point - m_origin;
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return m_origin + m_direction * dot(m_direction, v);
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}
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/// Compute distance to line.
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float distanceToPoint(Vector3::Arg point) const
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{
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nvDebugCheck(isNormalized(m_direction));
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Vector3 v = point - m_origin;
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Vector3 l = v - m_direction * dot(m_direction, v);
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return length(l);
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}
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const Vector3 & origin() const { return m_origin; }
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void setOrigin(Vector3::Arg value) { m_origin = value; }
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const Vector3 & direction() const { return m_direction; }
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void setDirection(Vector3::Arg value) { m_direction = value; }
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private:
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Vector3 m_origin;
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Vector3 m_direction;
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};
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namespace Fit
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{
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NVMATH_API Line3 bestLine(const Array<Vector3> & pointArray);
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NVMATH_API Vector4 bestPlane(const Array<Vector3> & pointArray);
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} // Fit namespace
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} // nv namespace
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#endif // _PI_MATHLIB_FITTING_H_
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