summaryrefslogtreecommitdiffstats
path: root/src/livarot/PathCutting.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/livarot/PathCutting.cpp1539
1 files changed, 1539 insertions, 0 deletions
diff --git a/src/livarot/PathCutting.cpp b/src/livarot/PathCutting.cpp
new file mode 100644
index 0000000..0b170bd
--- /dev/null
+++ b/src/livarot/PathCutting.cpp
@@ -0,0 +1,1539 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PathCutting.cpp
+ * nlivarot
+ *
+ * Created by fred on someday in 2004.
+ * public domain
+ *
+ * Additional Code by Authors:
+ * Richard Hughes <cyreve@users.sf.net>
+ *
+ * Copyright (C) 2005 Richard Hughes
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+#include <cstdio>
+#include <typeinfo>
+#include "Path.h"
+#include "style.h"
+#include "livarot/path-description.h"
+#include <2geom/pathvector.h>
+#include <2geom/point.h>
+#include <2geom/affine.h>
+#include <2geom/sbasis-to-bezier.h>
+#include <2geom/curves.h>
+#include "helper/geom-curves.h"
+#include "helper/geom.h"
+
+#include "svg/svg.h"
+
+void Path::DashPolyline(float head,float tail,float body,int nbD,float *dashs,bool stPlain,float stOffset)
+{
+ if ( nbD <= 0 || body <= 0.0001 ) return; // pas de tirets, en fait
+
+ std::vector<path_lineto> orig_pts = pts;
+ pts.clear();
+
+ int lastMI=-1;
+ int curP = 0;
+ int lastMP = -1;
+
+ for (int i = 0; i < int(orig_pts.size()); i++) {
+ if ( orig_pts[curP].isMoveTo == polyline_moveto ) {
+ if ( lastMI >= 0 && lastMI < i-1 ) { // au moins 2 points
+ DashSubPath(i-lastMI,lastMP, orig_pts, head,tail,body,nbD,dashs,stPlain,stOffset);
+ }
+ lastMI=i;
+ lastMP=curP;
+ }
+ curP++;
+ }
+ if ( lastMI >= 0 && lastMI < int(orig_pts.size()) - 1 ) {
+ DashSubPath(orig_pts.size() - lastMI, lastMP, orig_pts, head, tail, body, nbD, dashs, stPlain, stOffset);
+ }
+}
+
+void Path::DashPolylineFromStyle(SPStyle *style, float scale, float min_len)
+{
+ if (!style->stroke_dasharray.values.empty()) {
+
+ double dlen = 0.0;
+ // Find total length
+ for (auto & value : style->stroke_dasharray.values) {
+ dlen += value.value * scale;
+ }
+ if (dlen >= min_len) {
+ // Extract out dash pattern (relative positions)
+ double dash_offset = style->stroke_dashoffset.value * scale;
+ size_t n_dash = style->stroke_dasharray.values.size();
+ double *dash = g_new(double, n_dash);
+ for (unsigned i = 0; i < n_dash; i++) {
+ dash[i] = style->stroke_dasharray.values[i].value * scale;
+ }
+
+ // Convert relative positions to absolute positions
+ int nbD = n_dash;
+ float *dashs=(float*)malloc((nbD+1)*sizeof(float));
+ while ( dash_offset >= dlen ) dash_offset-=dlen;
+ dashs[0]=dash[0];
+ for (int i=1; i<nbD; i++) {
+ dashs[i]=dashs[i-1]+dash[i];
+ }
+
+ // modulo dlen
+ this->DashPolyline(0.0, 0.0, dlen, nbD, dashs, true, dash_offset);
+
+ free(dashs);
+ g_free(dash);
+ }
+ }
+}
+
+
+void Path::DashSubPath(int spL, int spP, std::vector<path_lineto> const &orig_pts, float head,float tail,float body,int nbD,float *dashs,bool stPlain,float stOffset)
+{
+ if ( spL <= 0 || spP == -1 ) return;
+
+ double totLength=0;
+ Geom::Point lastP;
+ lastP = orig_pts[spP].p;
+ for (int i=1;i<spL;i++) {
+ Geom::Point const n = orig_pts[spP + i].p;
+ Geom::Point d=n-lastP;
+ double nl=Geom::L2(d);
+ if ( nl > 0.0001 ) {
+ totLength+=nl;
+ lastP=n;
+ }
+ }
+
+ if ( totLength <= head+tail ) return; // tout mange par la tete et la queue
+
+ double curLength=0;
+ double dashPos=0;
+ int dashInd=0;
+ bool dashPlain=false;
+ double lastT=0;
+ int lastPiece=-1;
+ lastP = orig_pts[spP].p;
+ for (int i=1;i<spL;i++) {
+ Geom::Point n;
+ int nPiece=-1;
+ double nT=0;
+ if ( back ) {
+ n = orig_pts[spP + i].p;
+ nPiece = orig_pts[spP + i].piece;
+ nT = orig_pts[spP + i].t;
+ } else {
+ n = orig_pts[spP + i].p;
+ }
+ Geom::Point d=n-lastP;
+ double nl=Geom::L2(d);
+ if ( nl > 0.0001 ) {
+ double stLength=curLength;
+ double enLength=curLength+nl;
+ // couper les bouts en trop
+ if ( curLength <= head && curLength+nl > head ) {
+ nl-=head-curLength;
+ curLength=head;
+ dashInd=0;
+ dashPos=stOffset;
+ bool nPlain=stPlain;
+ while ( dashs[dashInd] < stOffset ) {
+ dashInd++;
+ nPlain=!(nPlain);
+ if ( dashInd >= nbD ) {
+ dashPos=0;
+ dashInd=0;
+ break;
+ }
+ }
+ if ( nPlain == true && dashPlain == false ) {
+ Geom::Point p=(enLength-curLength)*lastP+(curLength-stLength)*n;
+ p/=(enLength-stLength);
+ if ( back ) {
+ double pT=0;
+ if ( nPiece == lastPiece ) {
+ pT=(lastT*(enLength-curLength)+nT*(curLength-stLength))/(enLength-stLength);
+ } else {
+ pT=(nPiece*(curLength-stLength))/(enLength-stLength);
+ }
+ AddPoint(p,nPiece,pT,true);
+ } else {
+ AddPoint(p,true);
+ }
+ } else if ( nPlain == false && dashPlain == true ) {
+ }
+ dashPlain=nPlain;
+ }
+ // faire les tirets
+ if ( curLength >= head /*&& curLength+nl <= totLength-tail*/ ) {
+ while ( curLength <= totLength-tail && nl > 0 ) {
+ if ( enLength <= totLength-tail ) nl=enLength-curLength; else nl=totLength-tail-curLength;
+ double leftInDash=body-dashPos;
+ if ( dashInd < nbD ) {
+ leftInDash=dashs[dashInd]-dashPos;
+ }
+ if ( leftInDash <= nl ) {
+ bool nPlain=false;
+ if ( dashInd < nbD ) {
+ dashPos=dashs[dashInd];
+ dashInd++;
+ if ( dashPlain ) nPlain=false; else nPlain=true;
+ } else {
+ dashInd=0;
+ dashPos=0;
+ //nPlain=stPlain;
+ nPlain=dashPlain;
+ }
+ if ( nPlain == true && dashPlain == false ) {
+ Geom::Point p=(enLength-curLength-leftInDash)*lastP+(curLength+leftInDash-stLength)*n;
+ p/=(enLength-stLength);
+ if ( back ) {
+ double pT=0;
+ if ( nPiece == lastPiece ) {
+ pT=(lastT*(enLength-curLength-leftInDash)+nT*(curLength+leftInDash-stLength))/(enLength-stLength);
+ } else {
+ pT=(nPiece*(curLength+leftInDash-stLength))/(enLength-stLength);
+ }
+ AddPoint(p,nPiece,pT,true);
+ } else {
+ AddPoint(p,true);
+ }
+ } else if ( nPlain == false && dashPlain == true ) {
+ Geom::Point p=(enLength-curLength-leftInDash)*lastP+(curLength+leftInDash-stLength)*n;
+ p/=(enLength-stLength);
+ if ( back ) {
+ double pT=0;
+ if ( nPiece == lastPiece ) {
+ pT=(lastT*(enLength-curLength-leftInDash)+nT*(curLength+leftInDash-stLength))/(enLength-stLength);
+ } else {
+ pT=(nPiece*(curLength+leftInDash-stLength))/(enLength-stLength);
+ }
+ AddPoint(p,nPiece,pT,false);
+ } else {
+ AddPoint(p,false);
+ }
+ }
+ dashPlain=nPlain;
+
+ curLength+=leftInDash;
+ nl-=leftInDash;
+ } else {
+ dashPos+=nl;
+ curLength+=nl;
+ nl=0;
+ }
+ }
+ if ( dashPlain ) {
+ if ( back ) {
+ AddPoint(n,nPiece,nT,false);
+ } else {
+ AddPoint(n,false);
+ }
+ }
+ nl=enLength-curLength;
+ }
+ if ( curLength <= totLength-tail && curLength+nl > totLength-tail ) {
+ nl=totLength-tail-curLength;
+ dashInd=0;
+ dashPos=0;
+ bool nPlain=false;
+ if ( nPlain == true && dashPlain == false ) {
+ } else if ( nPlain == false && dashPlain == true ) {
+ Geom::Point p=(enLength-curLength)*lastP+(curLength-stLength)*n;
+ p/=(enLength-stLength);
+ if ( back ) {
+ double pT=0;
+ if ( nPiece == lastPiece ) {
+ pT=(lastT*(enLength-curLength)+nT*(curLength-stLength))/(enLength-stLength);
+ } else {
+ pT=(nPiece*(curLength-stLength))/(enLength-stLength);
+ }
+ AddPoint(p,nPiece,pT,false);
+ } else {
+ AddPoint(p,false);
+ }
+ }
+ dashPlain=nPlain;
+ }
+ // continuer
+ curLength=enLength;
+ lastP=n;
+ lastPiece=nPiece;
+ lastT=nT;
+ }
+ }
+}
+
+/**
+ * Make a Geom::PathVector version of the path description.
+ *
+ * \return A PathVector copy of the path description
+ */
+Geom::PathVector
+Path::MakePathVector()
+{
+ Geom::PathVector pv;
+ Geom::Path * currentpath = nullptr;
+
+ Geom::Point lastP,bezSt,bezEn;
+ int bezNb=0;
+ for (int i=0;i<int(descr_cmd.size());i++) {
+ int const typ = descr_cmd[i]->getType();
+ switch ( typ ) {
+ case descr_close:
+ {
+ currentpath->close(true);
+ }
+ break;
+
+ case descr_lineto:
+ {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ currentpath->appendNew<Geom::LineSegment>(Geom::Point(nData->p[0], nData->p[1]));
+ lastP = nData->p;
+ }
+ break;
+
+ case descr_moveto:
+ {
+ PathDescrMoveTo *nData = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ pv.push_back(Geom::Path());
+ currentpath = &pv.back();
+ currentpath->start(Geom::Point(nData->p[0], nData->p[1]));
+ lastP = nData->p;
+ }
+ break;
+
+ case descr_arcto:
+ {
+ /* TODO: add testcase for this descr_arcto case */
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ currentpath->appendNew<Geom::EllipticalArc>( nData->rx, nData->ry, nData->angle*M_PI/180.0, nData->large, !nData->clockwise, nData->p );
+ lastP = nData->p;
+ }
+ break;
+
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ gdouble x1=lastP[0]+0.333333*nData->start[0];
+ gdouble y1=lastP[1]+0.333333*nData->start[1];
+ gdouble x2=nData->p[0]-0.333333*nData->end[0];
+ gdouble y2=nData->p[1]-0.333333*nData->end[1];
+ gdouble x3=nData->p[0];
+ gdouble y3=nData->p[1];
+ currentpath->appendNew<Geom::CubicBezier>( Geom::Point(x1,y1) , Geom::Point(x2,y2) , Geom::Point(x3,y3) );
+ lastP = nData->p;
+ }
+ break;
+
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ if ( nData->nb <= 0 ) {
+ currentpath->appendNew<Geom::LineSegment>( Geom::Point(nData->p[0], nData->p[1]) );
+ bezNb=0;
+ } else if ( nData->nb == 1 ){
+ PathDescrIntermBezierTo *iData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i+1]);
+ gdouble x1=0.333333*(lastP[0]+2*iData->p[0]);
+ gdouble y1=0.333333*(lastP[1]+2*iData->p[1]);
+ gdouble x2=0.333333*(nData->p[0]+2*iData->p[0]);
+ gdouble y2=0.333333*(nData->p[1]+2*iData->p[1]);
+ gdouble x3=nData->p[0];
+ gdouble y3=nData->p[1];
+ currentpath->appendNew<Geom::CubicBezier>( Geom::Point(x1,y1) , Geom::Point(x2,y2) , Geom::Point(x3,y3) );
+ bezNb=0;
+ } else {
+ bezSt = 2*lastP-nData->p;
+ bezEn = nData->p;
+ bezNb = nData->nb;
+ }
+ lastP = nData->p;
+ }
+ break;
+
+ case descr_interm_bezier:
+ {
+ if ( bezNb > 0 ) {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ Geom::Point p_m=nData->p,p_s=0.5*(bezSt+p_m),p_e;
+ if ( bezNb > 1 ) {
+ PathDescrIntermBezierTo *iData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i+1]);
+ p_e=0.5*(p_m+iData->p);
+ } else {
+ p_e=bezEn;
+ }
+
+ Geom::Point cp1=0.333333*(p_s+2*p_m),cp2=0.333333*(2*p_m+p_e);
+ gdouble x1=cp1[0];
+ gdouble y1=cp1[1];
+ gdouble x2=cp2[0];
+ gdouble y2=cp2[1];
+ gdouble x3=p_e[0];
+ gdouble y3=p_e[1];
+ currentpath->appendNew<Geom::CubicBezier>( Geom::Point(x1,y1) , Geom::Point(x2,y2) , Geom::Point(x3,y3) );
+
+ bezNb--;
+ }
+ }
+ break;
+ }
+ }
+
+ return pv;
+}
+
+void Path::AddCurve(Geom::Curve const &c)
+{
+ if( is_straight_curve(c) )
+ {
+ LineTo( c.finalPoint() );
+ }
+ /*
+ else if(Geom::QuadraticBezier const *quadratic_bezier = dynamic_cast<Geom::QuadraticBezier const *>(c)) {
+ ...
+ }
+ */
+ else if(Geom::CubicBezier const *cubic_bezier = dynamic_cast<Geom::CubicBezier const *>(&c)) {
+ Geom::Point tmp = (*cubic_bezier)[3];
+ Geom::Point tms = 3 * ((*cubic_bezier)[1] - (*cubic_bezier)[0]);
+ Geom::Point tme = 3 * ((*cubic_bezier)[3] - (*cubic_bezier)[2]);
+ CubicTo (tmp, tms, tme);
+ }
+ else if(Geom::EllipticalArc const *elliptical_arc = dynamic_cast<Geom::EllipticalArc const *>(&c)) {
+ ArcTo( elliptical_arc->finalPoint(),
+ elliptical_arc->ray(Geom::X), elliptical_arc->ray(Geom::Y),
+ elliptical_arc->rotationAngle()*180.0/M_PI, // convert from radians to degrees
+ elliptical_arc->largeArc(), !elliptical_arc->sweep() );
+ } else {
+ //this case handles sbasis as well as all other curve types
+ Geom::Path sbasis_path = Geom::cubicbezierpath_from_sbasis(c.toSBasis(), 0.1);
+
+ //recurse to convert the new path resulting from the sbasis to svgd
+ for(const auto & iter : sbasis_path) {
+ AddCurve(iter);
+ }
+ }
+}
+
+/** append is false by default: it means that the path should be resetted. If it is true, the path is not resetted and Geom::Path will be appended as a new path
+ */
+void Path::LoadPath(Geom::Path const &path, Geom::Affine const &tr, bool doTransformation, bool append)
+{
+ if (!append) {
+ SetBackData (false);
+ Reset();
+ }
+ if (path.empty())
+ return;
+
+ // TODO: this can be optimized by not generating a new path here, but doing the transform in AddCurve
+ // directly on the curve parameters
+
+ Geom::Path const pathtr = doTransformation ? path * tr : path;
+
+ MoveTo( pathtr.initialPoint() );
+
+ for(const auto & cit : pathtr) {
+ AddCurve(cit);
+ }
+
+ if (pathtr.closed()) {
+ Close();
+ }
+}
+
+void Path::LoadPathVector(Geom::PathVector const &pv)
+{
+ LoadPathVector(pv, Geom::Affine(), false);
+}
+
+void Path::LoadPathVector(Geom::PathVector const &pv, Geom::Affine const &tr, bool doTransformation)
+{
+ SetBackData (false);
+ Reset();
+
+ // FIXME: 2geom is currently unable to maintain SVGElliptical arcs through transformation, and
+ // sometimes it crashes on a continuity error during conversions, therefore convert to beziers here.
+ // (the fix is of course to fix 2geom and then remove this if-statement, and just execute the 'else'-clause)
+ if (doTransformation) {
+ Geom::PathVector pvbezier = pathv_to_linear_and_cubic_beziers(pv);
+ for(const auto & it : pvbezier) {
+ LoadPath(it, tr, doTransformation, true);
+ }
+ } else {
+ for(const auto & it : pv) {
+ LoadPath(it, tr, doTransformation, true);
+ }
+ }
+}
+
+/**
+ * \return Length of the lines in the pts vector.
+ */
+
+double Path::Length()
+{
+ if ( pts.empty() ) {
+ return 0;
+ }
+
+ Geom::Point lastP = pts[0].p;
+
+ double len = 0;
+ for (const auto & pt : pts) {
+
+ if ( pt.isMoveTo != polyline_moveto ) {
+ len += Geom::L2(pt.p - lastP);
+ }
+
+ lastP = pt.p;
+ }
+
+ return len;
+}
+
+
+double Path::Surface()
+{
+ if ( pts.empty() ) {
+ return 0;
+ }
+
+ Geom::Point lastM = pts[0].p;
+ Geom::Point lastP = lastM;
+
+ double surf = 0;
+ for (const auto & pt : pts) {
+
+ if ( pt.isMoveTo == polyline_moveto ) {
+ surf += Geom::cross(lastM, lastM - lastP);
+ lastP = lastM = pt.p;
+ } else {
+ surf += Geom::cross(pt.p, pt.p - lastP);
+ lastP = pt.p;
+ }
+
+ }
+
+ return surf;
+}
+
+
+Path** Path::SubPaths(int &outNb,bool killNoSurf)
+{
+ int nbRes=0;
+ Path** res=nullptr;
+ Path* curAdd=nullptr;
+
+ for (auto & i : descr_cmd) {
+ int const typ = i->getType();
+ switch ( typ ) {
+ case descr_moveto:
+ if ( curAdd ) {
+ if ( curAdd->descr_cmd.size() > 1 ) {
+ curAdd->Convert(1.0);
+ double addSurf=curAdd->Surface();
+ if ( fabs(addSurf) > 0.0001 || killNoSurf == false ) {
+ res=(Path**)g_realloc(res,(nbRes+1)*sizeof(Path*));
+ res[nbRes++]=curAdd;
+ } else {
+ delete curAdd;
+ }
+ } else {
+ delete curAdd;
+ }
+ curAdd=nullptr;
+ }
+ curAdd=new Path;
+ curAdd->SetBackData(false);
+ {
+ PathDescrMoveTo *nData = dynamic_cast<PathDescrMoveTo *>(i);
+ curAdd->MoveTo(nData->p);
+ }
+ break;
+ case descr_close:
+ {
+ curAdd->Close();
+ }
+ break;
+ case descr_lineto:
+ {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(i);
+ curAdd->LineTo(nData->p);
+ }
+ break;
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(i);
+ curAdd->CubicTo(nData->p,nData->start,nData->end);
+ }
+ break;
+ case descr_arcto:
+ {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(i);
+ curAdd->ArcTo(nData->p,nData->rx,nData->ry,nData->angle,nData->large,nData->clockwise);
+ }
+ break;
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(i);
+ curAdd->BezierTo(nData->p);
+ }
+ break;
+ case descr_interm_bezier:
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(i);
+ curAdd->IntermBezierTo(nData->p);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ if ( curAdd ) {
+ if ( curAdd->descr_cmd.size() > 1 ) {
+ curAdd->Convert(1.0);
+ double addSurf=curAdd->Surface();
+ if ( fabs(addSurf) > 0.0001 || killNoSurf == false ) {
+ res=(Path**)g_realloc(res,(nbRes+1)*sizeof(Path*));
+ res[nbRes++]=curAdd;
+ } else {
+ delete curAdd;
+ }
+ } else {
+ delete curAdd;
+ }
+ }
+ curAdd=nullptr;
+
+ outNb=nbRes;
+ return res;
+}
+Path** Path::SubPathsWithNesting(int &outNb,bool killNoSurf,int nbNest,int* nesting,int* conts)
+{
+ int nbRes=0;
+ Path** res=nullptr;
+ Path* curAdd=nullptr;
+ bool increment=false;
+
+ for (int i=0;i<int(descr_cmd.size());i++) {
+ int const typ = descr_cmd[i]->getType();
+ switch ( typ ) {
+ case descr_moveto:
+ {
+ if ( curAdd && increment == false ) {
+ if ( curAdd->descr_cmd.size() > 1 ) {
+ // sauvegarder descr_cmd[0]->associated
+ int savA=curAdd->descr_cmd[0]->associated;
+ curAdd->Convert(1.0);
+ curAdd->descr_cmd[0]->associated=savA; // associated n'est pas utilise apres
+ double addSurf=curAdd->Surface();
+ if ( fabs(addSurf) > 0.0001 || killNoSurf == false ) {
+ res=(Path**)g_realloc(res,(nbRes+1)*sizeof(Path*));
+ res[nbRes++]=curAdd;
+ } else {
+ delete curAdd;
+ }
+ } else {
+ delete curAdd;
+ }
+ curAdd=nullptr;
+ }
+ Path* hasParent=nullptr;
+ for (int j=0;j<nbNest;j++) {
+ if ( conts[j] == i && nesting[j] >= 0 ) {
+ int parentMvt=conts[nesting[j]];
+ for (int k=0;k<nbRes;k++) {
+ if ( res[k] && res[k]->descr_cmd.empty() == false && res[k]->descr_cmd[0]->associated == parentMvt ) {
+ hasParent=res[k];
+ break;
+ }
+ }
+ }
+ if ( conts[j] > i ) break;
+ }
+ if ( hasParent ) {
+ curAdd=hasParent;
+ increment=true;
+ } else {
+ curAdd=new Path;
+ curAdd->SetBackData(false);
+ increment=false;
+ }
+ PathDescrMoveTo *nData = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ int mNo=curAdd->MoveTo(nData->p);
+ curAdd->descr_cmd[mNo]->associated=i;
+ }
+ break;
+ case descr_close:
+ {
+ curAdd->Close();
+ }
+ break;
+ case descr_lineto:
+ {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ curAdd->LineTo(nData->p);
+ }
+ break;
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ curAdd->CubicTo(nData->p,nData->start,nData->end);
+ }
+ break;
+ case descr_arcto:
+ {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ curAdd->ArcTo(nData->p,nData->rx,nData->ry,nData->angle,nData->large,nData->clockwise);
+ }
+ break;
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ curAdd->BezierTo(nData->p);
+ }
+ break;
+ case descr_interm_bezier:
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ curAdd->IntermBezierTo(nData->p);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ if ( curAdd && increment == false ) {
+ if ( curAdd->descr_cmd.size() > 1 ) {
+ curAdd->Convert(1.0);
+ double addSurf=curAdd->Surface();
+ if ( fabs(addSurf) > 0.0001 || killNoSurf == false ) {
+ res=(Path**)g_realloc(res,(nbRes+1)*sizeof(Path*));
+ res[nbRes++]=curAdd;
+ } else {
+ delete curAdd;
+ }
+ } else {
+ delete curAdd;
+ }
+ }
+ curAdd=nullptr;
+
+ outNb=nbRes;
+ return res;
+}
+
+
+void Path::ConvertForcedToVoid()
+{
+ for (int i=0; i < int(descr_cmd.size()); i++) {
+ if ( descr_cmd[i]->getType() == descr_forced) {
+ delete descr_cmd[i];
+ descr_cmd.erase(descr_cmd.begin() + i);
+ }
+ }
+}
+
+
+void Path::ConvertForcedToMoveTo()
+{
+ Geom::Point lastSeen(0, 0);
+ Geom::Point lastMove(0, 0);
+
+ {
+ Geom::Point lastPos(0, 0);
+ for (int i = int(descr_cmd.size()) - 1; i >= 0; i--) {
+ int const typ = descr_cmd[i]->getType();
+ switch ( typ ) {
+ case descr_forced:
+ {
+ PathDescrForced *d = dynamic_cast<PathDescrForced *>(descr_cmd[i]);
+ d->p = lastPos;
+ break;
+ }
+ case descr_close:
+ {
+ PathDescrClose *d = dynamic_cast<PathDescrClose *>(descr_cmd[i]);
+ d->p = lastPos;
+ break;
+ }
+ case descr_moveto:
+ {
+ PathDescrMoveTo *d = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_lineto:
+ {
+ PathDescrLineTo *d = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_arcto:
+ {
+ PathDescrArcTo *d = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *d = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *d = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_interm_bezier:
+ {
+ PathDescrIntermBezierTo *d = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ }
+
+ bool hasMoved = false;
+ for (int i = 0; i < int(descr_cmd.size()); i++) {
+ int const typ = descr_cmd[i]->getType();
+ switch ( typ ) {
+ case descr_forced:
+ if ( i < int(descr_cmd.size()) - 1 && hasMoved ) { // sinon il termine le chemin
+
+ delete descr_cmd[i];
+ descr_cmd[i] = new PathDescrMoveTo(lastSeen);
+ lastMove = lastSeen;
+ hasMoved = true;
+ }
+ break;
+
+ case descr_moveto:
+ {
+ PathDescrMoveTo *nData = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ lastMove = lastSeen = nData->p;
+ hasMoved = true;
+ }
+ break;
+ case descr_close:
+ {
+ lastSeen=lastMove;
+ }
+ break;
+ case descr_lineto:
+ {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ lastSeen=nData->p;
+ }
+ break;
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ lastSeen=nData->p;
+ }
+ break;
+ case descr_arcto:
+ {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ lastSeen=nData->p;
+ }
+ break;
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ lastSeen=nData->p;
+ }
+ break;
+ case descr_interm_bezier:
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ lastSeen=nData->p;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+static int CmpPosition(const void * p1, const void * p2) {
+ Path::cut_position *cp1=(Path::cut_position*)p1;
+ Path::cut_position *cp2=(Path::cut_position*)p2;
+ if ( cp1->piece < cp2->piece ) return -1;
+ if ( cp1->piece > cp2->piece ) return 1;
+ if ( cp1->t < cp2->t ) return -1;
+ if ( cp1->t > cp2->t ) return 1;
+ return 0;
+}
+static int CmpCurv(const void * p1, const void * p2) {
+ double *cp1=(double*)p1;
+ double *cp2=(double*)p2;
+ if ( *cp1 < *cp2 ) return -1;
+ if ( *cp1 > *cp2 ) return 1;
+ return 0;
+}
+
+
+Path::cut_position* Path::CurvilignToPosition(int nbCv, double *cvAbs, int &nbCut)
+{
+ if ( nbCv <= 0 || pts.empty() || back == false ) {
+ return nullptr;
+ }
+
+ qsort(cvAbs, nbCv, sizeof(double), CmpCurv);
+
+ cut_position *res = nullptr;
+ nbCut = 0;
+ int curCv = 0;
+
+ double len = 0;
+ double lastT = 0;
+ int lastPiece = -1;
+
+ Geom::Point lastM = pts[0].p;
+ Geom::Point lastP = lastM;
+
+ for (const auto & pt : pts) {
+
+ if ( pt.isMoveTo == polyline_moveto ) {
+
+ lastP = lastM = pt.p;
+ lastT = pt.t;
+ lastPiece = pt.piece;
+
+ } else {
+
+ double const add = Geom::L2(pt.p - lastP);
+ double curPos = len;
+ double curAdd = add;
+
+ while ( curAdd > 0.0001 && curCv < nbCv && curPos + curAdd >= cvAbs[curCv] ) {
+ double const theta = (cvAbs[curCv] - len) / add;
+ res = (cut_position*) g_realloc(res, (nbCut + 1) * sizeof(cut_position));
+ res[nbCut].piece = pt.piece;
+ res[nbCut].t = theta * pt.t + (1 - theta) * ( (lastPiece != pt.piece) ? 0 : lastT);
+ nbCut++;
+ curAdd -= cvAbs[curCv] - curPos;
+ curPos = cvAbs[curCv];
+ curCv++;
+ }
+
+ len += add;
+ lastPiece = pt.piece;
+ lastP = pt.p;
+ lastT = pt.t;
+ }
+ }
+
+ return res;
+}
+
+/*
+Moved from Layout-TNG-OutIter.cpp
+TODO: clean up uses of the original function and remove
+
+Original Comment:
+"this function really belongs to Path. I'll probably move it there eventually,
+hence the Path-esque coding style"
+
+*/
+template<typename T> inline static T square(T x) {return x*x;}
+Path::cut_position Path::PointToCurvilignPosition(Geom::Point const &pos, unsigned seg) const
+{
+ // if the parameter "seg" == 0, then all segments will be considered
+ // In however e.g. "seg" == 6 , then only the 6th segment will be considered
+
+ unsigned bestSeg = 0;
+ double bestRangeSquared = DBL_MAX;
+ double bestT = 0.0; // you need a sentinel, or make sure that you prime with correct values.
+
+ for (unsigned i = 1 ; i < pts.size() ; i++) {
+ if (pts[i].isMoveTo == polyline_moveto || (seg > 0 && i != seg)) continue;
+ Geom::Point p1, p2, localPos;
+ double thisRangeSquared;
+ double t;
+
+ if (pts[i - 1].p == pts[i].p) {
+ thisRangeSquared = square(pts[i].p[Geom::X] - pos[Geom::X]) + square(pts[i].p[Geom::Y] - pos[Geom::Y]);
+ t = 0.0;
+ } else {
+ // we rotate all our coordinates so we're always looking at a mostly vertical line.
+ if (fabs(pts[i - 1].p[Geom::X] - pts[i].p[Geom::X]) < fabs(pts[i - 1].p[Geom::Y] - pts[i].p[Geom::Y])) {
+ p1 = pts[i - 1].p;
+ p2 = pts[i].p;
+ localPos = pos;
+ } else {
+ p1 = pts[i - 1].p.cw();
+ p2 = pts[i].p.cw();
+ localPos = pos.cw();
+ }
+ double gradient = (p2[Geom::X] - p1[Geom::X]) / (p2[Geom::Y] - p1[Geom::Y]);
+ double intersection = p1[Geom::X] - gradient * p1[Geom::Y];
+ /*
+ orthogonalGradient = -1.0 / gradient; // you are going to have numerical problems here.
+ orthogonalIntersection = localPos[Geom::X] - orthogonalGradient * localPos[Geom::Y];
+ nearestY = (orthogonalIntersection - intersection) / (gradient - orthogonalGradient);
+
+ expand out nearestY fully :
+ nearestY = (localPos[Geom::X] - (-1.0 / gradient) * localPos[Geom::Y] - intersection) / (gradient - (-1.0 / gradient));
+
+ multiply top and bottom by gradient:
+ nearestY = (localPos[Geom::X] * gradient - (-1.0) * localPos[Geom::Y] - intersection * gradient) / (gradient * gradient - (-1.0));
+
+ and simplify to get:
+ */
+ double nearestY = (localPos[Geom::X] * gradient + localPos[Geom::Y] - intersection * gradient)
+ / (gradient * gradient + 1.0);
+ t = (nearestY - p1[Geom::Y]) / (p2[Geom::Y] - p1[Geom::Y]);
+ if (t <= 0.0) {
+ thisRangeSquared = square(p1[Geom::X] - localPos[Geom::X]) + square(p1[Geom::Y] - localPos[Geom::Y]);
+ t = 0.0;
+ } else if (t >= 1.0) {
+ thisRangeSquared = square(p2[Geom::X] - localPos[Geom::X]) + square(p2[Geom::Y] - localPos[Geom::Y]);
+ t = 1.0;
+ } else {
+ thisRangeSquared = square(nearestY * gradient + intersection - localPos[Geom::X]) + square(nearestY - localPos[Geom::Y]);
+ }
+ }
+
+ if (thisRangeSquared < bestRangeSquared) {
+ bestSeg = i;
+ bestRangeSquared = thisRangeSquared;
+ bestT = t;
+ }
+ }
+ Path::cut_position result;
+ if (bestSeg == 0) {
+ result.piece = 0;
+ result.t = 0.0;
+ } else {
+ result.piece = pts[bestSeg].piece;
+ if (result.piece == pts[bestSeg - 1].piece) {
+ result.t = pts[bestSeg - 1].t * (1.0 - bestT) + pts[bestSeg].t * bestT;
+ } else {
+ result.t = pts[bestSeg].t * bestT;
+ }
+ }
+ return result;
+}
+/*
+ this one also belongs to Path
+ returns the length of the path up to the position indicated by t (0..1)
+
+ TODO: clean up uses of the original function and remove
+
+ should this take a cut_position as a parameter?
+*/
+double Path::PositionToLength(int piece, double t)
+{
+ double length = 0.0;
+ for (unsigned i = 1 ; i < pts.size() ; i++) {
+ if (pts[i].isMoveTo == polyline_moveto) continue;
+ if (pts[i].piece == piece && t < pts[i].t) {
+ length += Geom::L2((t - pts[i - 1].t) / (pts[i].t - pts[i - 1].t) * (pts[i].p - pts[i - 1].p));
+ break;
+ }
+ length += Geom::L2(pts[i].p - pts[i - 1].p);
+ }
+ return length;
+}
+
+void Path::ConvertPositionsToForced(int nbPos, cut_position *poss)
+{
+ if ( nbPos <= 0 ) {
+ return;
+ }
+
+ {
+ Geom::Point lastPos(0, 0);
+ for (int i = int(descr_cmd.size()) - 1; i >= 0; i--) {
+ int const typ = descr_cmd[i]->getType();
+ switch ( typ ) {
+
+ case descr_forced:
+ {
+ PathDescrForced *d = dynamic_cast<PathDescrForced *>(descr_cmd[i]);
+ d->p = lastPos;
+ break;
+ }
+
+ case descr_close:
+ {
+ delete descr_cmd[i];
+ descr_cmd[i] = new PathDescrLineTo(Geom::Point(0, 0));
+
+ int fp = i - 1;
+ while ( fp >= 0 && (descr_cmd[fp]->getType()) != descr_moveto ) {
+ fp--;
+ }
+
+ if ( fp >= 0 ) {
+ PathDescrMoveTo *oData = dynamic_cast<PathDescrMoveTo *>(descr_cmd[fp]);
+ dynamic_cast<PathDescrLineTo*>(descr_cmd[i])->p = oData->p;
+ }
+ }
+ break;
+
+ case descr_bezierto:
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ Geom::Point theP = nData->p;
+ if ( nData->nb == 0 ) {
+ lastPos = theP;
+ }
+ }
+ break;
+
+ case descr_moveto:
+ {
+ PathDescrMoveTo *d = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_lineto:
+ {
+ PathDescrLineTo *d = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_arcto:
+ {
+ PathDescrArcTo *d = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_cubicto:
+ {
+ PathDescrCubicTo *d = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ case descr_interm_bezier:
+ {
+ PathDescrIntermBezierTo *d = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ lastPos = d->p;
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ }
+ if (descr_cmd[0]->getType() == descr_moveto)
+ descr_flags |= descr_doing_subpath; // see LP Bug 166302
+
+ qsort(poss, nbPos, sizeof(cut_position), CmpPosition);
+
+ for (int curP=0;curP<nbPos;curP++) {
+ int cp=poss[curP].piece;
+ if ( cp < 0 || cp >= int(descr_cmd.size()) ) break;
+ float ct=poss[curP].t;
+ if ( ct < 0 ) continue;
+ if ( ct > 1 ) continue;
+
+ int const typ = descr_cmd[cp]->getType();
+ if ( typ == descr_moveto || typ == descr_forced || typ == descr_close ) {
+ // ponctuel= rien a faire
+ } else if ( typ == descr_lineto || typ == descr_arcto || typ == descr_cubicto ) {
+ // facile: creation d'un morceau et d'un forced -> 2 commandes
+ Geom::Point theP;
+ Geom::Point theT;
+ Geom::Point startP;
+ startP=PrevPoint(cp-1);
+ if ( typ == descr_cubicto ) {
+ double len,rad;
+ Geom::Point stD,enD,endP;
+ {
+ PathDescrCubicTo *oData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[cp]);
+ stD=oData->start;
+ enD=oData->end;
+ endP=oData->p;
+ TangentOnCubAt (ct, startP, *oData,true, theP,theT,len,rad);
+ }
+
+ theT*=len;
+
+ InsertCubicTo(endP,(1-ct)*theT,(1-ct)*enD,cp+1);
+ InsertForcePoint(cp+1);
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[cp]);
+ nData->start=ct*stD;
+ nData->end=ct*theT;
+ nData->p=theP;
+ }
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP+1;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+ poss[j].piece+=2;
+ poss[j].t=(poss[j].t-ct)/(1-ct);
+ } else {
+ poss[j].piece+=2;
+ }
+ }
+ } else if ( typ == descr_lineto ) {
+ Geom::Point endP;
+ {
+ PathDescrLineTo *oData = dynamic_cast<PathDescrLineTo *>(descr_cmd[cp]);
+ endP=oData->p;
+ }
+
+ theP=ct*endP+(1-ct)*startP;
+
+ InsertLineTo(endP,cp+1);
+ InsertForcePoint(cp+1);
+ {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[cp]);
+ nData->p=theP;
+ }
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP+1;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+ poss[j].piece+=2;
+ poss[j].t=(poss[j].t-ct)/(1-ct);
+ } else {
+ poss[j].piece+=2;
+ }
+ }
+ } else if ( typ == descr_arcto ) {
+ Geom::Point endP;
+ double rx,ry,angle;
+ bool clockw,large;
+ double delta=0;
+ {
+ PathDescrArcTo *oData = dynamic_cast<PathDescrArcTo *>(descr_cmd[cp]);
+ endP=oData->p;
+ rx=oData->rx;
+ ry=oData->ry;
+ angle=oData->angle;
+ clockw=oData->clockwise;
+ large=oData->large;
+ }
+ {
+ double sang,eang;
+ ArcAngles(startP,endP,rx,ry,angle*M_PI/180.0,large,clockw,sang,eang);
+
+ if (clockw) {
+ if ( sang < eang ) sang += 2*M_PI;
+ delta=eang-sang;
+ } else {
+ if ( sang > eang ) sang -= 2*M_PI;
+ delta=eang-sang;
+ }
+ if ( delta < 0 ) delta=-delta;
+ }
+
+ PointAt (cp,ct, theP);
+
+ if ( delta*(1-ct) > M_PI ) {
+ InsertArcTo(endP,rx,ry,angle,true,clockw,cp+1);
+ } else {
+ InsertArcTo(endP,rx,ry,angle,false,clockw,cp+1);
+ }
+ InsertForcePoint(cp+1);
+ {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[cp]);
+ nData->p=theP;
+ if ( delta*ct > M_PI ) {
+ nData->large=true;
+ } else {
+ nData->large=false;
+ }
+ }
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP+1;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+ poss[j].piece+=2;
+ poss[j].t=(poss[j].t-ct)/(1-ct);
+ } else {
+ poss[j].piece+=2;
+ }
+ }
+ }
+ } else if ( typ == descr_bezierto || typ == descr_interm_bezier ) {
+ // dur
+ int theBDI=cp;
+ while ( theBDI >= 0 && (descr_cmd[theBDI]->getType()) != descr_bezierto ) theBDI--;
+ if ( (descr_cmd[theBDI]->getType()) == descr_bezierto ) {
+ PathDescrBezierTo theBD=*(dynamic_cast<PathDescrBezierTo *>(descr_cmd[theBDI]));
+ if ( cp >= theBDI && cp < theBDI+theBD.nb ) {
+ if ( theBD.nb == 1 ) {
+ Geom::Point endP=theBD.p;
+ Geom::Point midP;
+ Geom::Point startP;
+ startP=PrevPoint(theBDI-1);
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[theBDI+1]);
+ midP=nData->p;
+ }
+ Geom::Point aP=ct*midP+(1-ct)*startP;
+ Geom::Point bP=ct*endP+(1-ct)*midP;
+ Geom::Point knotP=ct*bP+(1-ct)*aP;
+
+ InsertIntermBezierTo(bP,theBDI+2);
+ InsertBezierTo(knotP,1,theBDI+2);
+ InsertForcePoint(theBDI+2);
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[theBDI+1]);
+ nData->p=aP;
+ }
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[theBDI]);
+ nData->p=knotP;
+ }
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP+1;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+ poss[j].piece+=3;
+ poss[j].t=(poss[j].t-ct)/(1-ct);
+ } else {
+ poss[j].piece+=3;
+ }
+ }
+
+ } else {
+ // decouper puis repasser
+ if ( cp > theBDI ) {
+ Geom::Point pcP,ncP;
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[cp]);
+ pcP=nData->p;
+ }
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[cp+1]);
+ ncP=nData->p;
+ }
+ Geom::Point knotP=0.5*(pcP+ncP);
+
+ InsertBezierTo(knotP,theBD.nb-(cp-theBDI),cp+1);
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[theBDI]);
+ nData->nb=cp-theBDI;
+ }
+
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+ poss[j].piece+=1;
+ } else {
+ poss[j].piece+=1;
+ }
+ }
+ curP--;
+ } else {
+ Geom::Point pcP,ncP;
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[cp+1]);
+ pcP=nData->p;
+ }
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[cp+2]);
+ ncP=nData->p;
+ }
+ Geom::Point knotP=0.5*(pcP+ncP);
+
+ InsertBezierTo(knotP,theBD.nb-1,cp+2);
+ {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[theBDI]);
+ nData->nb=1;
+ }
+
+ // decalages dans le tableau des positions de coupe
+ for (int j=curP;j<nbPos;j++) {
+ if ( poss[j].piece == cp ) {
+// poss[j].piece+=1;
+ } else {
+ poss[j].piece+=1;
+ }
+ }
+ curP--;
+ }
+ }
+ } else {
+ // on laisse aussi tomber
+ }
+ } else {
+ // on laisse tomber
+ }
+ }
+ }
+}
+
+void Path::ConvertPositionsToMoveTo(int nbPos,cut_position* poss)
+{
+ ConvertPositionsToForced(nbPos,poss);
+// ConvertForcedToMoveTo();
+ // on fait une version customizee a la place
+
+ Path* res=new Path;
+
+ Geom::Point lastP(0,0);
+ for (int i=0;i<int(descr_cmd.size());i++) {
+ int const typ = descr_cmd[i]->getType();
+ if ( typ == descr_moveto ) {
+ Geom::Point np;
+ {
+ PathDescrMoveTo *nData = dynamic_cast<PathDescrMoveTo *>(descr_cmd[i]);
+ np=nData->p;
+ }
+ Geom::Point endP;
+ bool hasClose=false;
+ int hasForced=-1;
+ bool doesClose=false;
+ int j=i+1;
+ for (;j<int(descr_cmd.size());j++) {
+ int const ntyp = descr_cmd[j]->getType();
+ if ( ntyp == descr_moveto ) {
+ j--;
+ break;
+ } else if ( ntyp == descr_forced ) {
+ if ( hasForced < 0 ) hasForced=j;
+ } else if ( ntyp == descr_close ) {
+ hasClose=true;
+ break;
+ } else if ( ntyp == descr_lineto ) {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[j]);
+ endP=nData->p;
+ } else if ( ntyp == descr_arcto ) {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[j]);
+ endP=nData->p;
+ } else if ( ntyp == descr_cubicto ) {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[j]);
+ endP=nData->p;
+ } else if ( ntyp == descr_bezierto ) {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[j]);
+ endP=nData->p;
+ } else {
+ }
+ }
+ if ( Geom::LInfty(endP-np) < 0.00001 ) {
+ doesClose=true;
+ }
+ if ( ( doesClose || hasClose ) && hasForced >= 0 ) {
+ // printf("nasty i=%i j=%i frc=%i\n",i,j,hasForced);
+ // aghhh.
+ Geom::Point nMvtP=PrevPoint(hasForced);
+ res->MoveTo(nMvtP);
+ Geom::Point nLastP=nMvtP;
+ for (int k = hasForced + 1; k < j; k++) {
+ int ntyp=descr_cmd[k]->getType();
+ if ( ntyp == descr_moveto ) {
+ // ne doit pas arriver
+ } else if ( ntyp == descr_forced ) {
+ res->MoveTo(nLastP);
+ } else if ( ntyp == descr_close ) {
+ // rien a faire ici; de plus il ne peut y en avoir qu'un
+ } else if ( ntyp == descr_lineto ) {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[k]);
+ res->LineTo(nData->p);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_arcto ) {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[k]);
+ res->ArcTo(nData->p,nData->rx,nData->ry,nData->angle,nData->large,nData->clockwise);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_cubicto ) {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[k]);
+ res->CubicTo(nData->p,nData->start,nData->end);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_bezierto ) {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[k]);
+ res->BezierTo(nData->p);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_interm_bezier ) {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[k]);
+ res->IntermBezierTo(nData->p);
+ } else {
+ }
+ }
+ if ( doesClose == false ) res->LineTo(np);
+ nLastP=np;
+ for (int k=i+1;k<hasForced;k++) {
+ int ntyp=descr_cmd[k]->getType();
+ if ( ntyp == descr_moveto ) {
+ // ne doit pas arriver
+ } else if ( ntyp == descr_forced ) {
+ res->MoveTo(nLastP);
+ } else if ( ntyp == descr_close ) {
+ // rien a faire ici; de plus il ne peut y en avoir qu'un
+ } else if ( ntyp == descr_lineto ) {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[k]);
+ res->LineTo(nData->p);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_arcto ) {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[k]);
+ res->ArcTo(nData->p,nData->rx,nData->ry,nData->angle,nData->large,nData->clockwise);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_cubicto ) {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[k]);
+ res->CubicTo(nData->p,nData->start,nData->end);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_bezierto ) {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[k]);
+ res->BezierTo(nData->p);
+ nLastP=nData->p;
+ } else if ( ntyp == descr_interm_bezier ) {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[k]);
+ res->IntermBezierTo(nData->p);
+ } else {
+ }
+ }
+ lastP=nMvtP;
+ i=j;
+ } else {
+ // regular, just move on
+ res->MoveTo(np);
+ lastP=np;
+ }
+ } else if ( typ == descr_close ) {
+ res->Close();
+ } else if ( typ == descr_forced ) {
+ res->MoveTo(lastP);
+ } else if ( typ == descr_lineto ) {
+ PathDescrLineTo *nData = dynamic_cast<PathDescrLineTo *>(descr_cmd[i]);
+ res->LineTo(nData->p);
+ lastP=nData->p;
+ } else if ( typ == descr_arcto ) {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(descr_cmd[i]);
+ res->ArcTo(nData->p,nData->rx,nData->ry,nData->angle,nData->large,nData->clockwise);
+ lastP=nData->p;
+ } else if ( typ == descr_cubicto ) {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(descr_cmd[i]);
+ res->CubicTo(nData->p,nData->start,nData->end);
+ lastP=nData->p;
+ } else if ( typ == descr_bezierto ) {
+ PathDescrBezierTo *nData = dynamic_cast<PathDescrBezierTo *>(descr_cmd[i]);
+ res->BezierTo(nData->p);
+ lastP=nData->p;
+ } else if ( typ == descr_interm_bezier ) {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo *>(descr_cmd[i]);
+ res->IntermBezierTo(nData->p);
+ } else {
+ }
+ }
+
+ Copy(res);
+ delete res;
+ return;
+}
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 20:24:41 +0000