#include "texception.h"

#include "toonz/autoclose.h"

#include "trastercm.h"

#include "skeletonlut.h"

#define AUT_SPOT_SAMPLES 10

using namespace SkeletonLut;

class TAutocloser::Imp

{

public:

	struct Seed {

		UCHAR *m_ptr;

		UCHAR m_preseed;

		Seed(UCHAR *ptr, UCHAR preseed) : m_ptr(ptr), m_preseed(preseed) {}

	};

	int m_closingDistance;

	double m_spotAngle;

	int m_inkIndex;

	int m_opacity;

	TRasterP m_raster;

	TRasterGR8P m_bRaster;

	UCHAR *m_br;

	int m_bWrap;

	int m_displaceVector[8];

	TPointD m_displAverage;

	int m_visited;

	double m_csp, m_snp, m_csm, m_snm, m_csa, m_sna, m_csb, m_snb;

	Imp(const TRasterP &r, int distance = 10, double angle = (180 * TConsts::pi) / 360.0, int index = 0, int opacity = 0)

		: m_raster(r), m_spotAngle(angle), m_closingDistance(distance), m_inkIndex(index), m_opacity(opacity)

	{

	}

	~Imp() {}

	bool inline isInk(UCHAR *br) { return (*br) & 0x1; }

	inline void eraseInk(UCHAR *br) { *(br) &= 0xfe; }

	UCHAR inline ePix(UCHAR *br) { return (*(br + 1)); }

	UCHAR inline wPix(UCHAR *br) { return (*(br - 1)); }

	UCHAR inline nPix(UCHAR *br) { return (*(br + m_bWrap)); }

	UCHAR inline sPix(UCHAR *br) { return (*(br - m_bWrap)); }

	UCHAR inline swPix(UCHAR *br) { return (*(br - m_bWrap - 1)); }

	UCHAR inline nwPix(UCHAR *br) { return (*(br + m_bWrap - 1)); }

	UCHAR inline nePix(UCHAR *br) { return (*(br + m_bWrap + 1)); }

	UCHAR inline sePix(UCHAR *br) { return (*(br - m_bWrap + 1)); }

	UCHAR inline neighboursCode(UCHAR *seed)

	{

		return ((swPix(seed) & 0x1) | ((sPix(seed) & 0x1) << 1) |

				((sePix(seed) & 0x1) << 2) | ((wPix(seed) & 0x1) << 3) |

				((ePix(seed) & 0x1) << 4) | ((nwPix(seed) & 0x1) << 5) |

				((nPix(seed) & 0x1) << 6) | ((nePix(seed) & 0x1) << 7));

	}

	//.......................

	inline bool notMarkedBorderInk(UCHAR *br)

	{

		return ((((*br) & 0x5) == 1) && (ePix(br) == 0 || wPix(br) == 0 || nPix(br) == 0 || sPix(br) == 0));

	}

	//.......................

	UCHAR *getPtr(int x, int y) { return m_br + m_bWrap * y + x; }

	UCHAR *getPtr(const TPoint &p) { return m_br + m_bWrap * p.y + p.x; }

	TPoint getCoordinates(UCHAR *br)

	{

		TPoint p;

		int pixelCount = br - m_bRaster->getRawData();

		p.y = pixelCount / m_bWrap;

		p.x = pixelCount - p.y * m_bWrap;

		return p;

	}

	//.......................

	void compute(vector<segment> &closingSegmentArray);</segment>

	void draw(const vector<segment> &closingSegmentArray);</segment>

	void skeletonize(vector<tpoint> &endpoints);</tpoint>

	void findSeeds(vector<seed> &seeds, vector<tpoint> &endpoints);</tpoint></seed>

	void erase(vector<seed> &seeds, vector<tpoint> &endpoints);</tpoint></seed>

	void circuitAndMark(UCHAR *seed, UCHAR preseed);

	bool circuitAndCancel(UCHAR *seed, UCHAR preseed, vector<tpoint> &endpoints);</tpoint>

	void findMeetingPoints(vector<tpoint> &endpoints, vector<segment> &closingSegments);</segment></tpoint>

	void calculateWeightAndDirection(vector<segment> &orientedEndpoints);</segment>

	bool spotResearchTwoPoints(vector<segment> &endpoints, vector<segment> &closingSegments);</segment></segment>

	bool spotResearchOnePoint(vector<segment> &endpoints, vector<segment> &closingSegments);</segment></segment>

	void copy(const TRasterGR8P &braux, TRaster32P &raux);

	int exploreTwoSpots(const TAutocloser::Segment &s0, const TAutocloser::Segment &s1);

	int notInsidePath(const TPoint &p, const TPoint &q);

	void drawInByteRaster(const TPoint &p0, const TPoint &p1);

	TPoint visitEndpoint(UCHAR *br);

	bool exploreSpot(const Segment &s, TPoint &p);

	bool exploreRay(UCHAR *br, Segment s, TPoint &p);

	void visitPix(UCHAR *br, int toVisit, const TPoint &dis);

	void cancelMarks(UCHAR *br);

	void cancelFromArray(vector<segment> &array, TPoint p, int &count);</segment>

};

/*------------------------------------------------------------------------*/

/*------------------------------------------------------------------------*/

#define DRAW_SEGMENT(a, b, da, db, istr1, istr2, block) \

	{                                                   \

		d = 2 * db - da;                                \

		incr_1 = 2 * db;                                \

		incr_2 = 2 * (db - da);                         \

		while (a < da) {                                \

			if (d <= 0) {                               \

				d += incr_1;                            \

				a++;                                    \

				istr1;                                  \

			} else {                                    \

				d += incr_2;                            \

				a++;                                    \

				b++;                                    \

				istr2;                                  \

			}                                           \

			block;                                      \

		}                                               \

	}

/*------------------------------------------------------------------------*/

#define EXPLORE_RAY_ISTR(istr)                                              \

	if (!inside_ink) {                                                      \

		if (((*br) & 0x1) && !((*br) & 0x80)) {                             \

			p.x = istr;                                                     \

			p.y = (s.first.y < s.second.y) ? s.first.y + y : s.first.y - y; \

			return true;                                                    \

		}                                                                   \

	} else if (inside_ink && !((*br) & 0x1))                                \

		inside_ink = 0;

/*------------------------------------------------------------------------*/

//-------------------------------------------------

namespace

{

inline bool isInk(const TPixel32 &pix)

{

	return pix.r < 80;

}

/*------------------------------------------------------------------------*/

TRasterGR8P fillByteRaster(const TRasterCM32P &r, TRasterGR8P &bRaster)

{

	int i, j;

	int lx = r->getLx();

	int ly = r->getLy();

	//bRaster->create(lx+4, ly+4);

	UCHAR *br = bRaster->getRawData();

	for (i = 0; i < lx + 4; i++)

		*(br++) = 0;

	for (i = 0; i < lx + 4; i++)

		*(br++) = 131;

	for (i = 0; i < ly; i++) {

		*(br++) = 0;

		*(br++) = 131;

		TPixelCM32 *pix = r->pixels(i);

		for (j = 0; j < lx; j++, pix++) {

			if (pix->getTone() != pix->getMaxTone())

				*(br++) = 3;

			else

				*(br++) = 0;

		}

		*(br++) = 131;

		*(br++) = 0;

	}

	for (i = 0; i < lx + 4; i++)

		*(br++) = 131;

	for (i = 0; i < lx + 4; i++)

		*(br++) = 0;

	return bRaster;

}

/*------------------------------------------------------------------------*/

#define SET_INK                              \

	if (buf->getTone() == buf->getMaxTone()) \

		*buf = TPixelCM32(inkIndex, 0, 255 - opacity);

void drawSegment(TRasterCM32P &r, const TAutocloser::Segment &s, USHORT inkIndex, USHORT opacity)

{

	int wrap = r->getWrap();

	TPixelCM32 *buf = r->pixels();

	/*

int i, j;

for (i=0; i<r->getLy();i++)</r->

  {

	for (j=0; j<r->getLx();j++, buf++)</r->

    *buf = (1<<4)|0xf;

  buf += wrap-r->getLx();

	}

return;

*/

	int x, y, dx, dy, d, incr_1, incr_2;

	int x1 = s.first.x;

	int y1 = s.first.y;

	int x2 = s.second.x;

	int y2 = s.second.y;

	if (x1 > x2) {

		tswap(x1, x2);

		tswap(y1, y2);

	}

	buf += y1 * wrap + x1;

	dx = x2 - x1;

	dy = y2 - y1;

	x = y = 0;

	if (dy >= 0) {

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (buf++), (buf += wrap + 1), SET_INK)

		else

			DRAW_SEGMENT(y, x, dy, dx, (buf += wrap), (buf += wrap + 1), SET_INK)

	} else {

		dy = -dy;

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (buf++), (buf -= (wrap - 1)), SET_INK)

		else

			DRAW_SEGMENT(y, x, dy, dx, (buf -= wrap), (buf -= (wrap - 1)), SET_INK)

	}

}

/*------------------------------------------------------------------------*/

} //namespace

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::compute(vector<segment> &closingSegmentArray)</segment>

{

	vector<tpoint> endpoints;</tpoint>

	try {

		assert(closingSegmentArray.empty());

		TRasterCM32P raux;

		if (!(raux = (TRasterCM32P)m_raster))

			throw TException("Unable to autoclose a not CM32 image.");

		if (m_raster->getLx() == 0 || m_raster->getLy() == 0)

			throw TException("Autoclose error: bad image size");

		//Lx = r->lx;

		//Ly = r->ly;

		TRasterGR8P braux(raux->getLx() + 4, raux->getLy() + 4);

		braux->lock();

		fillByteRaster(raux, braux);

		TRect r(2, 2, braux->getLx() - 3, braux->getLy() - 3);

		m_bRaster = braux->extract(r);

		m_br = m_bRaster->getRawData();

		m_bWrap = m_bRaster->getWrap();

		m_displaceVector[0] = -m_bWrap - 1;

		m_displaceVector[1] = -m_bWrap;

		m_displaceVector[2] = -m_bWrap + 1;

		m_displaceVector[3] = -1;

		m_displaceVector[4] = +1;

		m_displaceVector[5] = m_bWrap - 1;

		m_displaceVector[6] = m_bWrap;

		m_displaceVector[7] = m_bWrap + 1;

		skeletonize(endpoints);

		findMeetingPoints(endpoints, closingSegmentArray);

		//copy(m_bRaster, raux);

		braux->unlock();

	}

	catch (TException &e) {

		throw e;

	}

}

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::draw(const vector<segment> &closingSegmentArray)</segment>

{

	TRasterCM32P raux;

	if (!(raux = (TRasterCM32P)m_raster))

		throw TException("Unable to autoclose a not CM32 image.");

	if (m_raster->getLx() == 0 || m_raster->getLy() == 0)

		throw TException("Autoclose error: bad image size");

	for (int i = 0; i < (int)closingSegmentArray.size(); i++)

		drawSegment(raux, closingSegmentArray[i], m_inkIndex, m_opacity);

}

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::copy(const TRasterGR8P &br, TRaster32P &r)

{

	assert(r->getLx() == br->getLx() && r->getLy() == br->getLy());

	int i, j;

	int lx = r->getLx();

	int ly = r->getLy();

	UCHAR *bbuf = br->getRawData();

	TPixel *buf = (TPixel *)r->getRawData();

	for (i = 0; i < ly; i++) {

		for (j = 0; j < lx; j++, buf++, bbuf++) {

			buf->m = 255;

			if ((*bbuf) & 0x40)

				buf->r = 255, buf->g = buf->b = 0;

			else if (isInk(bbuf))

				buf->r = buf->g = buf->b = 0;

			else

				buf->r = buf->g = buf->b = 255;

		}

		buf += r->getWrap() - lx;

		bbuf += br->getWrap() - lx;

	}

}

/*=============================================================================*/

namespace

{

int intersect_segment(int x1, int y1, int x2, int y2, int i, double *ris)

{

	if ((i < tmin(y1, y2)) || (i > tmax(y1, y2)) || (y1 == y2))

		return 0;

	*ris = ((double)((x1 - x2) * (i - y2)) / (double)(y1 - y2) + x2);

	return 1;

}

/*=============================================================================*/

inline int distance2(const TPoint p0, const TPoint p1)

{

	return (p0.x - p1.x) * (p0.x - p1.x) + (p0.y - p1.y) * (p0.y - p1.y);

}

/*=============================================================================*/

int closerPoint(const vector<tautocloser::segment> &points, vector<bool> &marks, int index)</bool></tautocloser::segment>

{

	assert(points.size() == marks.size());

	int min, curr;

	int minval = (std::numeric_limits<int>::max)();</int>

	min = index + 1;

	for (curr = index + 1; curr < (int)points.size(); curr++)

		if (!(marks[curr])) {

			int distance = distance2(points[index].first, points[curr].first);

			if (distance < minval) {

				minval = distance;

				min = curr;

			}

		}

	marks[min] = true;

	return min;

}

/*------------------------------------------------------------------------*/

int intersect_triangle(int x1a, int y1a, int x2a, int y2a, int x3a, int y3a,

					   int x1b, int y1b, int x2b, int y2b, int x3b, int y3b)

{

	int minx, maxx, miny, maxy, i;

	double xamin, xamax, xbmin, xbmax, val;

	miny = tmax(tmin(y1a, y2a, y3a), tmin(y1b, y2b, y3b));

	maxy = tmin(tmax(y1a, y2a, y3a), tmax(y1b, y2b, y3b));

	if (maxy < miny)

		return 0;

	minx = tmax(tmin(x1a, x2a, x3a), tmin(x1b, x2b, x3b));

	maxx = tmin(tmax(x1a, x2a, x3a), tmax(x1b, x2b, x3b));

	if (maxx < minx)

		return 0;

	for (i = miny; i <= maxy; i++) {

		xamin = xamax = xbmin = xbmax = 0.0;

		intersect_segment(x1a, y1a, x2a, y2a, i, &xamin);

		if (intersect_segment(x1a, y1a, x3a, y3a, i, &val))

			if (xamin)

				xamax = val;

			else

				xamin = val;

		if (!xamax)

			intersect_segment(x2a, y2a, x3a, y3a, i, &xamax);

		if (xamax < xamin) {

			val = xamin, xamin = xamax, xamax = val;

		}

		intersect_segment(x1b, y1b, x2b, y2b, i, &xbmin);

		if (intersect_segment(x1b, y1b, x3b, y3b, i, &val))

			if (xbmin)

				xbmax = val;

			else

				xbmin = val;

		if (!xbmax)

			intersect_segment(x2b, y2b, x3b, y3b, i, &xbmax);

		if (xbmax < xbmin) {

			val = xbmin, xbmin = xbmax, xbmax = val;

		}

		if (!((tceil(xamax) < tfloor(xbmin)) || (tceil(xbmax) < tfloor(xamin))))

			return 1;

	}

	return 0;

}

/*------------------------------------------------------------------------*/

} //namespace

/*------------------------------------------------------------------------*/

int TAutocloser::Imp::notInsidePath(const TPoint &p, const TPoint &q)

{

	int tmp, x, y, dx, dy, d, incr_1, incr_2;

	int x1, y1, x2, y2;

	x1 = p.x;

	y1 = p.y;

	x2 = q.x;

	y2 = q.y;

	if (x1 > x2) {

		tmp = x1, x1 = x2, x2 = tmp;

		tmp = y1, y1 = y2, y2 = tmp;

	}

	UCHAR *br = getPtr(x1, y1);

	dx = x2 - x1;

	dy = y2 - y1;

	x = y = 0;

	if (dy >= 0) {

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (br++), (br += m_bWrap + 1), if (!((*br) & 0x2)) return true)

		else

			DRAW_SEGMENT(y, x, dy, dx, (br += m_bWrap), (br += m_bWrap + 1), if (!((*br) & 0x2)) return true)

	} else {

		dy = -dy;

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (br++), (br -= m_bWrap - 1), if (!((*br) & 0x2)) return true)

		else

			DRAW_SEGMENT(y, x, dy, dx, (br -= m_bWrap), (br -= m_bWrap - 1), if (!((*br) & 0x2)) return true)

	}

	return 0;

}

/*------------------------------------------------------------------------*/

int TAutocloser::Imp::exploreTwoSpots(const TAutocloser::Segment &s0, const TAutocloser::Segment &s1)

{

	int x1a, y1a, x2a, y2a, x3a, y3a, x1b, y1b, x2b, y2b, x3b, y3b;

	x1a = s0.first.x;

	y1a = s0.first.y;

	x1b = s1.first.x;

	y1b = s1.first.y;

	TPoint p0aux = s0.second;

	TPoint p1aux = s1.second;

	if (x1a == p0aux.x && y1a == p0aux.y)

		return 0;

	if (x1b == p1aux.x && y1b == p1aux.y)

		return 0;

	x2a = tround(x1a + (p0aux.x - x1a) * m_csp - (p0aux.y - y1a) * m_snp);

	y2a = tround(y1a + (p0aux.x - x1a) * m_snp + (p0aux.y - y1a) * m_csp);

	x3a = tround(x1a + (p0aux.x - x1a) * m_csm - (p0aux.y - y1a) * m_snm);

	y3a = tround(y1a + (p0aux.x - x1a) * m_snm + (p0aux.y - y1a) * m_csm);

	x2b = tround(x1b + (p1aux.x - x1b) * m_csp - (p1aux.y - y1b) * m_snp);

	y2b = tround(y1b + (p1aux.x - x1b) * m_snp + (p1aux.y - y1b) * m_csp);

	x3b = tround(x1b + (p1aux.x - x1b) * m_csm - (p1aux.y - y1b) * m_snm);

	y3b = tround(y1b + (p1aux.x - x1b) * m_snm + (p1aux.y - y1b) * m_csm);

	return (intersect_triangle(x1a, y1a, p0aux.x, p0aux.y, x2a, y2a,

							   x1b, y1b, p1aux.x, p1aux.y, x2b, y2b) ||

			intersect_triangle(x1a, y1a, p0aux.x, p0aux.y, x3a, y3a,

							   x1b, y1b, p1aux.x, p1aux.y, x2b, y2b) ||

			intersect_triangle(x1a, y1a, p0aux.x, p0aux.y, x2a, y2a,

							   x1b, y1b, p1aux.x, p1aux.y, x3b, y3b) ||

			intersect_triangle(x1a, y1a, p0aux.x, p0aux.y, x3a, y3a,

							   x1b, y1b, p1aux.x, p1aux.y, x3b, y3b));

}

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::findMeetingPoints(vector<tpoint> &endpoints,</tpoint>

										 vector<segment> &closingSegments)</segment>

{

	int i;

	double alfa;

	alfa = m_spotAngle / AUT_SPOT_SAMPLES;

	m_csp = cos(m_spotAngle / 5);

	m_snp = sin(m_spotAngle / 5);

	m_csm = cos(-m_spotAngle / 5);

	m_snm = sin(-m_spotAngle / 5);

	m_csa = cos(alfa);

	m_sna = sin(alfa);

	m_csb = cos(-alfa);

	m_snb = sin(-alfa);

	vector<segment> orientedEndpoints(endpoints.size());</segment>

	for (i = 0; i < (int)endpoints.size(); i++)

		orientedEndpoints[i].first = endpoints[i];

	int size = -1;

	while ((int)closingSegments.size() > size && !orientedEndpoints.empty()) {

		size = closingSegments.size();

		do

			calculateWeightAndDirection(orientedEndpoints);

		while (spotResearchTwoPoints(orientedEndpoints, closingSegments));

		do

			calculateWeightAndDirection(orientedEndpoints);

		while (spotResearchOnePoint(orientedEndpoints, closingSegments));

	}

}

/*------------------------------------------------------------------------*/

bool allMarked(const vector<bool> &marks, int index)</bool>

{

	int i;

	for (i = index + 1; i < (int)marks.size(); i++)

		if (!marks[i])

			return false;

	return true;

}

/*------------------------------------------------------------------------*/

bool TAutocloser::Imp::spotResearchTwoPoints(vector<segment> &endpoints, vector<segment> &closingSegments)</segment></segment>

{

	int i, distance, current = 0, closerIndex;

	int sqrDistance = m_closingDistance * m_closingDistance;

	bool found = 0;

	vector<bool> marks(endpoints.size());</bool>

	while (current < (int)endpoints.size() - 1) {

		found = 0;

		for (i = current + 1; i < (int)marks.size(); i++)

			marks[i] = false;

		distance = 0;

		while (!found && (distance <= sqrDistance) && !allMarked(marks, current)) {

			closerIndex = closerPoint(endpoints, marks, current);

			if (exploreTwoSpots(endpoints[current], endpoints[closerIndex]) &&

				notInsidePath(endpoints[current].first, endpoints[closerIndex].first)) {

				drawInByteRaster(endpoints[current].first, endpoints[closerIndex].first);

				closingSegments.push_back(Segment(endpoints[current].first, endpoints[closerIndex].first));

				if (!EndpointTable[neighboursCode(getPtr(endpoints[closerIndex].first))]) {

					std::vector<segment>::iterator it = endpoints.begin();</segment>

					std::advance(it, closerIndex);

					endpoints.erase(it);

					std::vector<bool>::iterator it1 = marks.begin();</bool>

					std::advance(it1, closerIndex);

					marks.erase(it1);

				}

				found = true;

			}

		}

		if (found) {

			std::vector<segment>::iterator it = endpoints.begin();</segment>

			std::advance(it, current);

			endpoints.erase(it);

			std::vector<bool>::iterator it1 = marks.begin();</bool>

			std::advance(it1, current);

			marks.erase(it1);

		} else

			current++;

	}

	return found;

}

/*------------------------------------------------------------------------*/

/*

static void clear_marks(POINT *p)

{

while (p)

  {

  p->mark = 0;

  p = p->next;

  }

}

static int there_are_unmarked(POINT *p)

{

while (p)

  {

  if (!p->mark) return 1;

  p = p->next;

  }

return 0;

}

*/

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::calculateWeightAndDirection(vector<segment> &orientedEndpoints)</segment>

{

	//UCHAR *br;

	int lx = m_raster->getLx();

	int ly = m_raster->getLy();

	std::vector<segment>::iterator it = orientedEndpoints.begin();</segment>

	while (it != orientedEndpoints.end()) {

		TPoint p0 = it->first;

		TPoint &p1 = it->second;

		//br = (UCHAR *)m_bRaster->pixels(p0.y)+p0.x;

		//code = neighboursCode(br);

		/*if (!EndpointTable[code])

	  {

	  it = orientedEndpoints.erase(it);

    continue;

    }*/

		TPoint displAverage = visitEndpoint(getPtr(p0));

		p1 = p0 - displAverage;

		/*if ((point->x2<0 && point->y2<0) || (point->x2>Lx && point->y2>Ly)) printf("che palle!!!!!!\n");*/

		if (p1.x < 0) {

			p1.y = tround(p0.y - (float)((p0.y - p1.y) * p0.x) / (p0.x - p1.x));

			p1.x = 0;

		} else if (p1.x > lx) {

			p1.y = tround(p0.y - (float)((p0.y - p1.y) * (p0.x - lx)) / (p0.x - p1.x));

			p1.x = lx;

		}

		if (p1.y < 0) {

			p1.x = tround(p0.x - (float)((p0.x - p1.x) * p0.y) / (p0.y - p1.y));

			p1.y = 0;

		} else if (p1.y > ly) {

			p1.x = tround(p0.x - (float)((p0.x - p1.x) * (p0.y - ly)) / (p0.y - p1.y));

			p1.y = ly;

		}

		it++;

	}

}

/*------------------------------------------------------------------------*/

bool TAutocloser::Imp::spotResearchOnePoint(vector<segment> &endpoints, vector<segment> &closingSegments)</segment></segment>

{

	int count = 0;

	bool ret = false;

	while (count < (int)endpoints.size()) {

		TPoint p;

		if (exploreSpot(endpoints[count], p)) {

			Segment segment(endpoints[count].first, p);

			vector<segment>::iterator it = std::find(closingSegments.begin(), closingSegments.end(), segment);</segment>

			if (it == closingSegments.end()) {

				ret = true;

				drawInByteRaster(endpoints[count].first, p);

				closingSegments.push_back(Segment(endpoints[count].first, p));

				cancelFromArray(endpoints, p, count);

				if (!EndpointTable[neighboursCode(getPtr(endpoints[count].first))]) {

					std::vector<segment>::iterator it = endpoints.begin();</segment>

					std::advance(it, count);

					endpoints.erase(it);

					continue;

				}

			}

		}

		count++;

	}

	return ret;

}

/*------------------------------------------------------------------------*/

bool TAutocloser::Imp::exploreSpot(const Segment &s, TPoint &p)

{

	int x1, y1, x2, y2, x3, y3, i;

	double x2a, y2a, x2b, y2b, xnewa, ynewa, xnewb, ynewb;

	int lx = m_raster->getLx();

	int ly = m_raster->getLy();

	x1 = s.first.x;

	y1 = s.first.y;

	x2 = s.second.x;

	y2 = s.second.y;

	if (x1 == x2 && y1 == y2)

		return 0;

	if (exploreRay(getPtr(x1, y1), s, p))

		return true;

	x2a = x2b = (double)x2;

	y2a = y2b = (double)y2;

	for (i = 0; i < AUT_SPOT_SAMPLES; i++) {

		xnewa = x1 + (x2a - x1) * m_csa - (y2a - y1) * m_sna;

		ynewa = y1 + (y2a - y1) * m_csa + (x2a - x1) * m_sna;

		x3 = tround(xnewa);

		y3 = tround(ynewa);

		if ((x3 != tround(x2a) || y3 != tround(y2a)) && x3 > 0 && x3 < lx && y3 > 0 && y3 < ly &&

			exploreRay(getPtr(x1, y1), Segment(TPoint(x1, y1), TPoint(tround(xnewa), tround(ynewa))), p))

			return true;

		x2a = xnewa;

		y2a = ynewa;

		xnewb = x1 + (x2b - x1) * m_csb - (y2b - y1) * m_snb;

		ynewb = y1 + (y2b - y1) * m_csb + (x2b - x1) * m_snb;

		x3 = tround(xnewb);

		y3 = tround(ynewb);

		if ((x3 != tround(x2b) || y3 != tround(y2b)) && x3 > 0 && x3 < lx && y3 > 0 && y3 < ly &&

			exploreRay(getPtr(x1, y1), Segment(TPoint(x1, y1), TPoint(tround(xnewb), tround(ynewb))), p))

			return true;

		x2b = xnewb;

		y2b = ynewb;

	}

	return false;

}

/*------------------------------------------------------------------------*/

bool TAutocloser::Imp::exploreRay(UCHAR *br, Segment s, TPoint &p)

{

	int x, y, dx, dy, d, incr_1, incr_2, inside_ink;

	inside_ink = 1;

	x = 0;

	y = 0;

	if (s.first.x < s.second.x) {

		dx = s.second.x - s.first.x;

		dy = s.second.y - s.first.y;

		if (dy >= 0)

			if (dy <= dx)

				DRAW_SEGMENT(x, y, dx, dy, (br++), (br += m_bWrap + 1),

							 EXPLORE_RAY_ISTR((s.first.x + x)))

			else

				DRAW_SEGMENT(y, x, dy, dx, (br += m_bWrap), (br += m_bWrap + 1),

							 EXPLORE_RAY_ISTR((s.first.x + x)))

		else {

			dy = -dy;

			if (dy <= dx)

				DRAW_SEGMENT(x, y, dx, dy, (br++), (br -= m_bWrap - 1),

							 EXPLORE_RAY_ISTR((s.first.x + x)))

			else

				DRAW_SEGMENT(y, x, dy, dx, (br -= m_bWrap), (br -= m_bWrap - 1),

							 EXPLORE_RAY_ISTR((s.first.x + x)))

		}

	} else {

		dx = s.first.x - s.second.x;

		dy = s.second.y - s.first.y;

		if (dy >= 0)

			if (dy <= dx)

				DRAW_SEGMENT(x, y, dx, dy, (br--), (br += m_bWrap - 1),

							 EXPLORE_RAY_ISTR((s.first.x - x)))

			else

				DRAW_SEGMENT(y, x, dy, dx, (br += m_bWrap), (br += m_bWrap - 1),

							 EXPLORE_RAY_ISTR((s.first.x - x)))

		else {

			dy = -dy;

			if (dy <= dx)

				DRAW_SEGMENT(x, y, dx, dy, (br--), (br -= m_bWrap + 1),

							 EXPLORE_RAY_ISTR((s.first.x - x)))

			else

				DRAW_SEGMENT(y, x, dy, dx, (br -= m_bWrap), (br -= m_bWrap + 1),

							 EXPLORE_RAY_ISTR((s.first.x - x)))

		}

	}

	return false;

}

/*------------------------------------------------------------------------*/

void TAutocloser::Imp::drawInByteRaster(const TPoint &p0, const TPoint &p1)

{

	int x, y, dx, dy, d, incr_1, incr_2;

	UCHAR *br;

	if (p0.x > p1.x) {

		br = getPtr(p1);

		dx = p0.x - p1.x;

		dy = p0.y - p1.y;

	} else {

		br = getPtr(p0);

		dx = p1.x - p0.x;

		dy = p1.y - p0.y;

	}

	x = y = 0;

	if (dy >= 0) {

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (br++), (br += m_bWrap + 1), ((*br) |= 0x41))

		else

			DRAW_SEGMENT(y, x, dy, dx, (br += m_bWrap), (br += m_bWrap + 1), ((*br) |= 0x41))

	} else {

		dy = -dy;

		if (dy <= dx)

			DRAW_SEGMENT(x, y, dx, dy, (br++), (br -= m_bWrap - 1), ((*br) |= 0x41))

		else

			DRAW_SEGMENT(y, x, dy, dx, (br -= m_bWrap), (br -= m_bWrap - 1), ((*br) |= 0x41))

	}

}

/*------------------------------------------------------------------------*/

TPoint TAutocloser::Imp::visitEndpoint(UCHAR *br)

{

	m_displAverage = TPointD();

	m_visited = 0;

	visitPix(br, m_closingDistance, TPoint());

	cancelMarks(br);

	return TPoint(convert((1.0 / m_visited) * m_displAverage));

}

/*------------------------------------------------------------------------*/