2016-05-17 03:04:11 +12:00
|
|
|
#pragma once
|
2016-03-19 06:57:51 +13:00
|
|
|
|
|
|
|
#ifndef T_SEGMENTADJUSTER_H
|
|
|
|
#define T_SEGMENTADJUSTER_H
|
|
|
|
|
|
|
|
#include "tgeometry.h"
|
|
|
|
#include "tstroke.h"
|
|
|
|
|
|
|
|
#undef DVAPI
|
|
|
|
#undef DVVAR
|
|
|
|
#ifdef TVECTORIMAGE_EXPORTS
|
|
|
|
#define DVAPI DV_EXPORT_API
|
|
|
|
#define DVVAR DV_EXPORT_VAR
|
|
|
|
#else
|
|
|
|
#define DVAPI DV_IMPORT_API
|
|
|
|
#define DVVAR DV_IMPORT_VAR
|
|
|
|
#endif
|
|
|
|
|
2017-05-09 00:13:29 +12:00
|
|
|
#ifdef _MSC_VER
|
2016-03-19 06:57:51 +13:00
|
|
|
#pragma warning(disable : 4251)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*!
|
|
|
|
The TSegmentAdjuster minimizes the distance between
|
|
|
|
|
|
|
|
stroke0->getPoint(w0) and stroke1->getPoint(w1)
|
|
|
|
|
|
|
|
changing the values of w0 and w1 (in a defined range).
|
|
|
|
|
|
|
|
Usage:
|
|
|
|
|
|
|
|
TSegmentAdjuster::End p0(stroke0, w0, 0, 1);
|
|
|
|
TSegmentAdjuster::End p1(stroke1, w1, 0, 1);
|
|
|
|
TSegmentAdjuster adjuster;
|
|
|
|
adjuster.compute(p0,p1);
|
|
|
|
|
|
|
|
// the adjusted segment is p0.getPoint(), p1.getPoint()
|
|
|
|
|
|
|
|
if you want to adjust the segment only in the w-growing-direction:
|
|
|
|
|
|
|
|
TSegmentAdjuster::End p0(stroke0, w0, w0, 1);
|
|
|
|
TSegmentAdjuster::End p1(stroke1, w1, w1, 1);
|
|
|
|
TSegmentAdjuster adjuster;
|
|
|
|
adjuster.compute(p0,p1);
|
|
|
|
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
2016-06-15 18:43:10 +12:00
|
|
|
class DVAPI TSegmentAdjuster {
|
2016-03-19 06:57:51 +13:00
|
|
|
public:
|
2016-06-15 18:43:10 +12:00
|
|
|
class End {
|
|
|
|
public:
|
|
|
|
TStroke *m_stroke;
|
|
|
|
double m_w;
|
|
|
|
double m_wmin, m_wmax;
|
|
|
|
End() : m_stroke(0), m_w(0), m_wmin(0), m_wmax(1) {}
|
|
|
|
End(TStroke *stroke, double w)
|
|
|
|
: m_stroke(stroke), m_w(w), m_wmin(0), m_wmax(1) {}
|
|
|
|
End(TStroke *stroke, double w, double wmin, double wmax)
|
|
|
|
: m_stroke(stroke), m_w(w), m_wmin(wmin), m_wmax(wmax) {}
|
|
|
|
TPointD getPoint() const { return m_stroke->getPoint(m_w); }
|
|
|
|
TPointD getSpeed() const { return m_stroke->getSpeed(m_w); }
|
|
|
|
};
|
|
|
|
|
|
|
|
TSegmentAdjuster();
|
|
|
|
|
|
|
|
// debug
|
|
|
|
void enableTrace(bool enabled) { m_traceEnabled = enabled; }
|
|
|
|
void draw();
|
|
|
|
void clear() { m_links.clear(); }
|
|
|
|
|
|
|
|
void compute(End &a, End &b);
|
2016-03-19 06:57:51 +13:00
|
|
|
|
|
|
|
private:
|
2016-06-15 18:43:10 +12:00
|
|
|
End m_a, m_b, m_c, m_d;
|
|
|
|
std::vector<std::pair<TPointD, TPointD>> m_links;
|
|
|
|
bool m_traceEnabled;
|
|
|
|
|
|
|
|
inline double fun(double u, double v) const {
|
|
|
|
return norm2(m_a.m_stroke->getPoint(u) - m_b.m_stroke->getPoint(v));
|
|
|
|
}
|
|
|
|
|
|
|
|
inline void gradient(double &dfdu, double &dfdv, double u, double v) {
|
|
|
|
const double h = 0.0001;
|
|
|
|
dfdu = (fun(u + h, v) - fun(u - h, v)) / (2 * h);
|
|
|
|
dfdv = (fun(u, v + h) - fun(u, v - h)) / (2 * h);
|
|
|
|
}
|
|
|
|
|
|
|
|
inline static double dsda(TStroke *stroke, double w, double dwda) {
|
|
|
|
const double h = 0.0001;
|
|
|
|
return norm(stroke->getPoint(w + dwda * h) -
|
|
|
|
stroke->getPoint(w - dwda * h)) /
|
|
|
|
(2 * h);
|
|
|
|
}
|
2016-03-19 06:57:51 +13:00
|
|
|
};
|
|
|
|
//---------------------------------------------------------------------------------------
|
|
|
|
|
2016-06-15 18:43:10 +12:00
|
|
|
#endif // T_SEGMENTADJUSTER_H
|