summaryrefslogtreecommitdiffstats
path: root/src/livarot/ShapeMisc.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/livarot/ShapeMisc.cpp1461
1 files changed, 1461 insertions, 0 deletions
diff --git a/src/livarot/ShapeMisc.cpp b/src/livarot/ShapeMisc.cpp
new file mode 100644
index 0000000..07e0fc9
--- /dev/null
+++ b/src/livarot/ShapeMisc.cpp
@@ -0,0 +1,1461 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors:
+ * see git history
+ * Fred
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "livarot/Shape.h"
+#include "livarot/Path.h"
+#include "livarot/path-description.h"
+#include <glib.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <2geom/point.h>
+#include <2geom/affine.h>
+
+/*
+ * polygon offset and polyline to path reassembling (when using back data)
+ */
+
+// until i find something better
+#define MiscNormalize(v) {\
+ double _l=sqrt(dot(v,v)); \
+ if ( _l < 0.0000001 ) { \
+ v[0]=v[1]=0; \
+ } else { \
+ v/=_l; \
+ }\
+}
+
+// extracting the contour of an uncrossed polygon: a mere depth first search
+// more precisely that's extracting an eulerian path from a graph, but here we want to split
+// the polygon into contours and avoid holes. so we take a "next counter-clockwise edge first" approach
+// (make a checkboard and extract its contours to see the difference)
+void
+Shape::ConvertToForme (Path * dest)
+{
+ if (numberOfPoints() <= 1 || numberOfEdges() <= 1)
+ return;
+
+ // prepare
+ dest->Reset ();
+
+ MakePointData (true);
+ MakeEdgeData (true);
+ MakeSweepDestData (true);
+
+ for (int i = 0; i < numberOfPoints(); i++)
+ {
+ pData[i].rx[0] = Round (getPoint(i).x[0]);
+ pData[i].rx[1] = Round (getPoint(i).x[1]);
+ }
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ eData[i].rdx = pData[getEdge(i).en].rx - pData[getEdge(i).st].rx;
+ }
+
+ // sort edge clockwise, with the closest after midnight being first in the doubly-linked list
+ // that's vital to the algorithm...
+ SortEdges ();
+
+ // depth-first search implies: we make a stack of edges traversed.
+ // precParc: previous in the stack
+ // suivParc: next in the stack
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ swdData[i].misc = nullptr;
+ swdData[i].precParc = swdData[i].suivParc = -1;
+ }
+
+ int searchInd = 0;
+
+ int lastPtUsed = 0;
+ do
+ {
+ // first get a starting point, and a starting edge
+ // -> take the upper left point, and take its first edge
+ // points traversed have swdData[].misc != 0, so it's easy
+ int startBord = -1;
+ {
+ int fi = 0;
+ for (fi = lastPtUsed; fi < numberOfPoints(); fi++)
+ {
+ if (getPoint(fi).incidentEdge[FIRST] >= 0 && swdData[getPoint(fi).incidentEdge[FIRST]].misc == nullptr)
+ break;
+ }
+ lastPtUsed = fi + 1;
+ if (fi < numberOfPoints())
+ {
+ int bestB = getPoint(fi).incidentEdge[FIRST];
+ while (bestB >= 0 && getEdge(bestB).st != fi)
+ bestB = NextAt (fi, bestB);
+ if (bestB >= 0)
+ {
+ startBord = bestB;
+ dest->MoveTo (getPoint(getEdge(startBord).en).x);
+ }
+ }
+ }
+ // and walk the graph, doing contours when needed
+ if (startBord >= 0)
+ {
+ // parcours en profondeur pour mettre les leF et riF a leurs valeurs
+ swdData[startBord].misc = (void *) 1;
+ // printf("part de %d\n",startBord);
+ int curBord = startBord;
+ bool back = false;
+ swdData[curBord].precParc = -1;
+ swdData[curBord].suivParc = -1;
+ do
+ {
+ int cPt = getEdge(curBord).en;
+ int nb = curBord;
+ // printf("de curBord= %d au point %i -> ",curBord,cPt);
+ // get next edge
+ do
+ {
+ int nnb = CycleNextAt (cPt, nb);
+ if (nnb == nb)
+ {
+ // cul-de-sac
+ nb = -1;
+ break;
+ }
+ nb = nnb;
+ if (nb < 0 || nb == curBord)
+ break;
+ }
+ while (swdData[nb].misc != nullptr || getEdge(nb).st != cPt);
+
+ if (nb < 0 || nb == curBord)
+ {
+ // no next edge: end of this contour, we get back
+ if (back == false)
+ dest->Close ();
+ back = true;
+ // retour en arriere
+ curBord = swdData[curBord].precParc;
+ // printf("retour vers %d\n",curBord);
+ if (curBord < 0)
+ break;
+ }
+ else
+ {
+ // new edge, maybe for a new contour
+ if (back)
+ {
+ // we were backtracking, so if we have a new edge, that means we're creating a new contour
+ dest->MoveTo (getPoint(cPt).x);
+ back = false;
+ }
+ swdData[nb].misc = (void *) 1;
+ swdData[nb].ind = searchInd++;
+ swdData[nb].precParc = curBord;
+ swdData[curBord].suivParc = nb;
+ curBord = nb;
+ // printf("suite %d\n",curBord);
+ {
+ // add that edge
+ dest->LineTo (getPoint(getEdge(nb).en).x);
+ }
+ }
+ }
+ while (true /*swdData[curBord].precParc >= 0 */ );
+ // fin du cas non-oriente
+ }
+ }
+ while (lastPtUsed < numberOfPoints());
+
+ MakePointData (false);
+ MakeEdgeData (false);
+ MakeSweepDestData (false);
+}
+
+// same as before, but each time we have a contour, try to reassemble the segments on it to make chunks of
+// the original(s) path(s)
+// originals are in the orig array, whose size is nbP
+void
+Shape::ConvertToForme (Path * dest, int nbP, Path * *orig, bool splitWhenForced)
+{
+ if (numberOfPoints() <= 1 || numberOfEdges() <= 1)
+ return;
+// if (Eulerian (true) == false)
+// return;
+
+ if (_has_back_data == false)
+ {
+ ConvertToForme (dest);
+ return;
+ }
+
+ dest->Reset ();
+
+ MakePointData (true);
+ MakeEdgeData (true);
+ MakeSweepDestData (true);
+
+ for (int i = 0; i < numberOfPoints(); i++)
+ {
+ pData[i].rx[0] = Round (getPoint(i).x[0]);
+ pData[i].rx[1] = Round (getPoint(i).x[1]);
+ }
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ eData[i].rdx = pData[getEdge(i).en].rx - pData[getEdge(i).st].rx;
+ }
+
+ SortEdges ();
+
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ swdData[i].misc = nullptr;
+ swdData[i].precParc = swdData[i].suivParc = -1;
+ }
+
+ int searchInd = 0;
+
+ int lastPtUsed = 0;
+ do
+ {
+ int startBord = -1;
+ {
+ int fi = 0;
+ for (fi = lastPtUsed; fi < numberOfPoints(); fi++)
+ {
+ if (getPoint(fi).incidentEdge[FIRST] >= 0 && swdData[getPoint(fi).incidentEdge[FIRST]].misc == nullptr)
+ break;
+ }
+ lastPtUsed = fi + 1;
+ if (fi < numberOfPoints())
+ {
+ int bestB = getPoint(fi).incidentEdge[FIRST];
+ while (bestB >= 0 && getEdge(bestB).st != fi)
+ bestB = NextAt (fi, bestB);
+ if (bestB >= 0)
+ {
+ startBord = bestB;
+ }
+ }
+ }
+ if (startBord >= 0)
+ {
+ // parcours en profondeur pour mettre les leF et riF a leurs valeurs
+ swdData[startBord].misc = (void *) 1;
+ //printf("part de %d\n",startBord);
+ int curBord = startBord;
+ bool back = false;
+ swdData[curBord].precParc = -1;
+ swdData[curBord].suivParc = -1;
+ int curStartPt=getEdge(curBord).st;
+ do
+ {
+ int cPt = getEdge(curBord).en;
+ int nb = curBord;
+ //printf("de curBord= %d au point %i -> ",curBord,cPt);
+ do
+ {
+ int nnb = CycleNextAt (cPt, nb);
+ if (nnb == nb)
+ {
+ // cul-de-sac
+ nb = -1;
+ break;
+ }
+ nb = nnb;
+ if (nb < 0 || nb == curBord)
+ break;
+ }
+ while (swdData[nb].misc != nullptr || getEdge(nb).st != cPt);
+
+ if (nb < 0 || nb == curBord)
+ {
+ if (back == false)
+ {
+ if (curBord == startBord || curBord < 0)
+ {
+ // probleme -> on vire le moveto
+ // dest->descr_nb--;
+ }
+ else
+ {
+ swdData[curBord].suivParc = -1;
+ AddContour (dest, nbP, orig, startBord, curBord,splitWhenForced);
+ }
+ // dest->Close();
+ }
+ back = true;
+ // retour en arriere
+ curBord = swdData[curBord].precParc;
+ //printf("retour vers %d\n",curBord);
+ if (curBord < 0)
+ break;
+ }
+ else
+ {
+ if (back)
+ {
+ back = false;
+ startBord = nb;
+ curStartPt=getEdge(nb).st;
+ } else {
+ if ( getEdge(curBord).en == curStartPt ) {
+ //printf("contour %i ",curStartPt);
+ swdData[curBord].suivParc = -1;
+ AddContour (dest, nbP, orig, startBord, curBord,splitWhenForced);
+ startBord=nb;
+ }
+ }
+ swdData[nb].misc = (void *) 1;
+ swdData[nb].ind = searchInd++;
+ swdData[nb].precParc = curBord;
+ swdData[curBord].suivParc = nb;
+ curBord = nb;
+ //printf("suite %d\n",curBord);
+ }
+ }
+ while (true /*swdData[curBord].precParc >= 0 */ );
+ // fin du cas non-oriente
+ }
+ }
+ while (lastPtUsed < numberOfPoints());
+
+ MakePointData (false);
+ MakeEdgeData (false);
+ MakeSweepDestData (false);
+}
+void
+Shape::ConvertToFormeNested (Path * dest, int nbP, Path * *orig, int /*wildPath*/,int &nbNest,int *&nesting,int *&contStart,bool splitWhenForced)
+{
+ nesting=nullptr;
+ contStart=nullptr;
+ nbNest=0;
+
+ if (numberOfPoints() <= 1 || numberOfEdges() <= 1)
+ return;
+ // if (Eulerian (true) == false)
+ // return;
+
+ if (_has_back_data == false)
+ {
+ ConvertToForme (dest);
+ return;
+ }
+
+ dest->Reset ();
+
+// MakePointData (true);
+ MakeEdgeData (true);
+ MakeSweepDestData (true);
+
+ for (int i = 0; i < numberOfPoints(); i++)
+ {
+ pData[i].rx[0] = Round (getPoint(i).x[0]);
+ pData[i].rx[1] = Round (getPoint(i).x[1]);
+ }
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ eData[i].rdx = pData[getEdge(i).en].rx - pData[getEdge(i).st].rx;
+ }
+
+ SortEdges ();
+
+ for (int i = 0; i < numberOfEdges(); i++)
+ {
+ swdData[i].misc = nullptr;
+ swdData[i].precParc = swdData[i].suivParc = -1;
+ }
+
+ int searchInd = 0;
+
+ int lastPtUsed = 0;
+ int parentContour=-1;
+ do
+ {
+ int childEdge = -1;
+ bool foundChild = false;
+ int startBord = -1;
+ {
+ int fi = 0;
+ for (fi = lastPtUsed; fi < numberOfPoints(); fi++)
+ {
+ if (getPoint(fi).incidentEdge[FIRST] >= 0 && swdData[getPoint(fi).incidentEdge[FIRST]].misc == nullptr)
+ break;
+ }
+ {
+ if (pData.size()<= fi || fi == numberOfPoints()) {
+ parentContour=-1;
+ } else {
+ int askTo = pData[fi].askForWindingB;
+ if (askTo < 0 || askTo >= numberOfEdges() ) {
+ parentContour=-1;
+ } else {
+ if (getEdge(askTo).prevS >= 0) {
+ parentContour = GPOINTER_TO_INT(swdData[askTo].misc);
+ parentContour-=1; // pour compenser le decalage
+ }
+ childEdge = getPoint(fi).incidentEdge[FIRST];
+ }
+ }
+ }
+ lastPtUsed = fi + 1;
+ if (fi < numberOfPoints())
+ {
+ int bestB = getPoint(fi).incidentEdge[FIRST];
+ while (bestB >= 0 && getEdge(bestB).st != fi)
+ bestB = NextAt (fi, bestB);
+ if (bestB >= 0)
+ {
+ startBord = bestB;
+ }
+ }
+ }
+ if (startBord >= 0)
+ {
+ // parcours en profondeur pour mettre les leF et riF a leurs valeurs
+ swdData[startBord].misc = (void *)(intptr_t)(1 + nbNest);
+ if (startBord == childEdge) {
+ foundChild = true;
+ }
+ //printf("part de %d\n",startBord);
+ int curBord = startBord;
+ bool back = false;
+ swdData[curBord].precParc = -1;
+ swdData[curBord].suivParc = -1;
+ int curStartPt=getEdge(curBord).st;
+ do
+ {
+ int cPt = getEdge(curBord).en;
+ int nb = curBord;
+ //printf("de curBord= %d au point %i -> ",curBord,cPt);
+ do
+ {
+ int nnb = CycleNextAt (cPt, nb);
+ if (nnb == nb)
+ {
+ // cul-de-sac
+ nb = -1;
+ break;
+ }
+ nb = nnb;
+ if (nb < 0 || nb == curBord)
+ break;
+ }
+ while (swdData[nb].misc != nullptr || getEdge(nb).st != cPt);
+
+ if (nb < 0 || nb == curBord)
+ {
+ if (back == false)
+ {
+ if (curBord == startBord || curBord < 0)
+ {
+ // probleme -> on vire le moveto
+ // dest->descr_nb--;
+ }
+ else
+ {
+// bool escapePath=false;
+// int tb=curBord;
+// while ( tb >= 0 && tb < numberOfEdges() ) {
+// if ( ebData[tb].pathID == wildPath ) {
+// escapePath=true;
+// break;
+// }
+// tb=swdData[tb].precParc;
+// }
+ nesting=(int*)g_realloc(nesting,(nbNest+1)*sizeof(int));
+ contStart=(int*)g_realloc(contStart,(nbNest+1)*sizeof(int));
+ contStart[nbNest]=dest->descr_cmd.size();
+ if (foundChild) {
+ nesting[nbNest++]=parentContour;
+ foundChild = false;
+ } else {
+ nesting[nbNest++]=-1; // contient des bouts de coupure -> a part
+ }
+ swdData[curBord].suivParc = -1;
+ AddContour (dest, nbP, orig, startBord, curBord,splitWhenForced);
+ }
+ // dest->Close();
+ }
+ back = true;
+ // retour en arriere
+ curBord = swdData[curBord].precParc;
+ //printf("retour vers %d\n",curBord);
+ if (curBord < 0)
+ break;
+ }
+ else
+ {
+ if (back)
+ {
+ back = false;
+ startBord = nb;
+ curStartPt=getEdge(nb).st;
+ } else {
+ if ( getEdge(curBord).en == curStartPt ) {
+ //printf("contour %i ",curStartPt);
+
+// bool escapePath=false;
+// int tb=curBord;
+// while ( tb >= 0 && tb < numberOfEdges() ) {
+// if ( ebData[tb].pathID == wildPath ) {
+// escapePath=true;
+// break;
+// }
+// tb=swdData[tb].precParc;
+// }
+ nesting=(int*)g_realloc(nesting,(nbNest+1)*sizeof(int));
+ contStart=(int*)g_realloc(contStart,(nbNest+1)*sizeof(int));
+ contStart[nbNest]=dest->descr_cmd.size();
+ if (foundChild) {
+ nesting[nbNest++]=parentContour;
+ foundChild = false;
+ } else {
+ nesting[nbNest++]=-1; // contient des bouts de coupure -> a part
+ }
+ swdData[curBord].suivParc = -1;
+ AddContour (dest, nbP, orig, startBord, curBord,splitWhenForced);
+ startBord=nb;
+ }
+ }
+ swdData[nb].misc = (void *)(intptr_t)(1 + nbNest);
+ swdData[nb].ind = searchInd++;
+ swdData[nb].precParc = curBord;
+ swdData[curBord].suivParc = nb;
+ curBord = nb;
+ if (nb == childEdge) {
+ foundChild = true;
+ }
+ //printf("suite %d\n",curBord);
+ }
+ }
+ while (true /*swdData[curBord].precParc >= 0 */ );
+ // fin du cas non-oriente
+ }
+ }
+ while (lastPtUsed < numberOfPoints());
+
+ MakePointData (false);
+ MakeEdgeData (false);
+ MakeSweepDestData (false);
+}
+
+
+int
+Shape::MakeTweak (int mode, Shape *a, double power, JoinType join, double miter, bool do_profile, Geom::Point c, Geom::Point vector, double radius, Geom::Affine *i2doc)
+{
+ Reset (0, 0);
+ MakeBackData(a->_has_back_data);
+
+ bool done_something = false;
+
+ if (power == 0)
+ {
+ _pts = a->_pts;
+ if (numberOfPoints() > maxPt)
+ {
+ maxPt = numberOfPoints();
+ if (_has_points_data) {
+ pData.resize(maxPt);
+ _point_data_initialised = false;
+ _bbox_up_to_date = false;
+ }
+ }
+
+ _aretes = a->_aretes;
+ if (numberOfEdges() > maxAr)
+ {
+ maxAr = numberOfEdges();
+ if (_has_edges_data)
+ eData.resize(maxAr);
+ if (_has_sweep_src_data)
+ swsData.resize(maxAr);
+ if (_has_sweep_dest_data)
+ swdData.resize(maxAr);
+ if (_has_raster_data)
+ swrData.resize(maxAr);
+ if (_has_back_data)
+ ebData.resize(maxAr);
+ }
+ return 0;
+ }
+ if (a->numberOfPoints() <= 1 || a->numberOfEdges() <= 1 || a->type != shape_polygon)
+ return shape_input_err;
+
+ a->SortEdges ();
+
+ a->MakeSweepDestData (true);
+ a->MakeSweepSrcData (true);
+
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ int stB = -1, enB = -1;
+ if (power <= 0 || mode == tweak_mode_push || mode == tweak_mode_repel || mode == tweak_mode_roughen) {
+ stB = a->CyclePrevAt (a->getEdge(i).st, i);
+ enB = a->CycleNextAt (a->getEdge(i).en, i);
+ } else {
+ stB = a->CycleNextAt (a->getEdge(i).st, i);
+ enB = a->CyclePrevAt (a->getEdge(i).en, i);
+ }
+
+ Geom::Point stD = a->getEdge(stB).dx;
+ Geom::Point seD = a->getEdge(i).dx;
+ Geom::Point enD = a->getEdge(enB).dx;
+
+ double stL = sqrt (dot(stD,stD));
+ double seL = sqrt (dot(seD,seD));
+ //double enL = sqrt (dot(enD,enD));
+ MiscNormalize (stD);
+ MiscNormalize (enD);
+ MiscNormalize (seD);
+
+ Geom::Point ptP;
+ int stNo, enNo;
+ ptP = a->getPoint(a->getEdge(i).st).x;
+
+ Geom::Point to_center = ptP * (*i2doc) - c;
+ Geom::Point to_center_normalized = (1/Geom::L2(to_center)) * to_center;
+
+ double this_power;
+ if (do_profile && i2doc) {
+ double alpha = 1;
+ double x;
+ if (mode == tweak_mode_repel) {
+ x = (Geom::L2(to_center)/radius);
+ } else {
+ x = (Geom::L2(ptP * (*i2doc) - c)/radius);
+ }
+ if (x > 1) {
+ this_power = 0;
+ } else if (x <= 0) {
+ if (mode == tweak_mode_repel) {
+ this_power = 0;
+ } else {
+ this_power = power;
+ }
+ } else {
+ this_power = power * (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
+ }
+ } else {
+ if (mode == tweak_mode_repel) {
+ this_power = 0;
+ } else {
+ this_power = power;
+ }
+ }
+
+ if (this_power != 0)
+ done_something = true;
+
+ double scaler = 1 / (*i2doc).descrim();
+
+ Geom::Point this_vec(0,0);
+ if (mode == tweak_mode_push) {
+ Geom::Affine tovec (*i2doc);
+ tovec[4] = tovec[5] = 0;
+ tovec = tovec.inverse();
+ this_vec = this_power * (vector * tovec) ;
+ } else if (mode == tweak_mode_repel) {
+ this_vec = this_power * scaler * to_center_normalized;
+ } else if (mode == tweak_mode_roughen) {
+ double angle = g_random_double_range(0, 2*M_PI);
+ this_vec = g_random_double_range(0, 1) * this_power * scaler * Geom::Point(sin(angle), cos(angle));
+ }
+
+ int usePathID=-1;
+ int usePieceID=0;
+ double useT=0.0;
+ if ( a->_has_back_data ) {
+ if ( a->ebData[i].pathID >= 0 && a->ebData[stB].pathID == a->ebData[i].pathID && a->ebData[stB].pieceID == a->ebData[i].pieceID
+ && a->ebData[stB].tEn == a->ebData[i].tSt ) {
+ usePathID=a->ebData[i].pathID;
+ usePieceID=a->ebData[i].pieceID;
+ useT=a->ebData[i].tSt;
+ } else {
+ usePathID=a->ebData[i].pathID;
+ usePieceID=0;
+ useT=0;
+ }
+ }
+
+ if (mode == tweak_mode_push || mode == tweak_mode_repel || mode == tweak_mode_roughen) {
+ Path::DoLeftJoin (this, 0, join, ptP+this_vec, stD+this_vec, seD+this_vec, miter, stL, seL,
+ stNo, enNo,usePathID,usePieceID,useT);
+ a->swsData[i].stPt = enNo;
+ a->swsData[stB].enPt = stNo;
+ } else {
+ if (power > 0) {
+ Path::DoRightJoin (this, this_power * scaler, join, ptP, stD, seD, miter, stL, seL,
+ stNo, enNo,usePathID,usePieceID,useT);
+ a->swsData[i].stPt = enNo;
+ a->swsData[stB].enPt = stNo;
+ } else {
+ Path::DoLeftJoin (this, -this_power * scaler, join, ptP, stD, seD, miter, stL, seL,
+ stNo, enNo,usePathID,usePieceID,useT);
+ a->swsData[i].stPt = enNo;
+ a->swsData[stB].enPt = stNo;
+ }
+ }
+ }
+
+ if (power < 0 || mode == tweak_mode_push || mode == tweak_mode_repel || mode == tweak_mode_roughen)
+ {
+ for (int i = 0; i < numberOfEdges(); i++)
+ Inverse (i);
+ }
+
+ if ( _has_back_data ) {
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ int nEd=AddEdge (a->swsData[i].stPt, a->swsData[i].enPt);
+ ebData[nEd]=a->ebData[i];
+ }
+ } else {
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ AddEdge (a->swsData[i].stPt, a->swsData[i].enPt);
+ }
+ }
+
+ a->MakeSweepSrcData (false);
+ a->MakeSweepDestData (false);
+
+ return (done_something? 0 : shape_nothing_to_do);
+}
+
+
+// offsets
+// take each edge, offset it, and make joins with previous at edge start and next at edge end (previous and
+// next being with respect to the clockwise order)
+// you gotta be very careful with the join, as anything but the right one will fuck everything up
+// see PathStroke.cpp for the "right" joins
+int
+Shape::MakeOffset (Shape * a, double dec, JoinType join, double miter, bool do_profile, double cx, double cy, double radius, Geom::Affine *i2doc)
+{
+ Reset (0, 0);
+ MakeBackData(a->_has_back_data);
+
+ bool done_something = false;
+
+ if (dec == 0)
+ {
+ _pts = a->_pts;
+ if (numberOfPoints() > maxPt)
+ {
+ maxPt = numberOfPoints();
+ if (_has_points_data) {
+ pData.resize(maxPt);
+ _point_data_initialised = false;
+ _bbox_up_to_date = false;
+ }
+ }
+
+ _aretes = a->_aretes;
+ if (numberOfEdges() > maxAr)
+ {
+ maxAr = numberOfEdges();
+ if (_has_edges_data)
+ eData.resize(maxAr);
+ if (_has_sweep_src_data)
+ swsData.resize(maxAr);
+ if (_has_sweep_dest_data)
+ swdData.resize(maxAr);
+ if (_has_raster_data)
+ swrData.resize(maxAr);
+ if (_has_back_data)
+ ebData.resize(maxAr);
+ }
+ return 0;
+ }
+ if (a->numberOfPoints() <= 1 || a->numberOfEdges() <= 1 || a->type != shape_polygon)
+ return shape_input_err;
+
+ a->SortEdges ();
+
+ a->MakeSweepDestData (true);
+ a->MakeSweepSrcData (true);
+
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ // int stP=a->swsData[i].stPt/*,enP=a->swsData[i].enPt*/;
+ int stB = -1, enB = -1;
+ if (dec > 0)
+ {
+ stB = a->CycleNextAt (a->getEdge(i).st, i);
+ enB = a->CyclePrevAt (a->getEdge(i).en, i);
+ }
+ else
+ {
+ stB = a->CyclePrevAt (a->getEdge(i).st, i);
+ enB = a->CycleNextAt (a->getEdge(i).en, i);
+ }
+
+ Geom::Point stD = a->getEdge(stB).dx;
+ Geom::Point seD = a->getEdge(i).dx;
+ Geom::Point enD = a->getEdge(enB).dx;
+
+ double stL = sqrt (dot(stD,stD));
+ double seL = sqrt (dot(seD,seD));
+ //double enL = sqrt (dot(enD,enD));
+ MiscNormalize (stD);
+ MiscNormalize (enD);
+ MiscNormalize (seD);
+
+ Geom::Point ptP;
+ int stNo, enNo;
+ ptP = a->getPoint(a->getEdge(i).st).x;
+
+ double this_dec;
+ if (do_profile && i2doc) {
+ double alpha = 1;
+ double x = (Geom::L2(ptP * (*i2doc) - Geom::Point(cx,cy))/radius);
+ if (x > 1) {
+ this_dec = 0;
+ } else if (x <= 0) {
+ this_dec = dec;
+ } else {
+ this_dec = dec * (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
+ }
+ } else {
+ this_dec = dec;
+ }
+
+ if (this_dec != 0)
+ done_something = true;
+
+ int usePathID=-1;
+ int usePieceID=0;
+ double useT=0.0;
+ if ( a->_has_back_data ) {
+ if ( a->ebData[i].pathID >= 0 && a->ebData[stB].pathID == a->ebData[i].pathID && a->ebData[stB].pieceID == a->ebData[i].pieceID
+ && a->ebData[stB].tEn == a->ebData[i].tSt ) {
+ usePathID=a->ebData[i].pathID;
+ usePieceID=a->ebData[i].pieceID;
+ useT=a->ebData[i].tSt;
+ } else {
+ usePathID=a->ebData[i].pathID;
+ usePieceID=0;
+ useT=0;
+ }
+ }
+ if (dec > 0)
+ {
+ Path::DoRightJoin (this, this_dec, join, ptP, stD, seD, miter, stL, seL,
+ stNo, enNo,usePathID,usePieceID,useT);
+ a->swsData[i].stPt = enNo;
+ a->swsData[stB].enPt = stNo;
+ }
+ else
+ {
+ Path::DoLeftJoin (this, -this_dec, join, ptP, stD, seD, miter, stL, seL,
+ stNo, enNo,usePathID,usePieceID,useT);
+ a->swsData[i].stPt = enNo;
+ a->swsData[stB].enPt = stNo;
+ }
+ }
+
+ if (dec < 0)
+ {
+ for (int i = 0; i < numberOfEdges(); i++)
+ Inverse (i);
+ }
+
+ if ( _has_back_data ) {
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ int nEd=AddEdge (a->swsData[i].stPt, a->swsData[i].enPt);
+ ebData[nEd]=a->ebData[i];
+ }
+ } else {
+ for (int i = 0; i < a->numberOfEdges(); i++)
+ {
+ AddEdge (a->swsData[i].stPt, a->swsData[i].enPt);
+ }
+ }
+
+ a->MakeSweepSrcData (false);
+ a->MakeSweepDestData (false);
+
+ return (done_something? 0 : shape_nothing_to_do);
+}
+
+
+
+// we found a contour, now reassemble the edges on it, instead of dumping them in the Path "dest" as a
+// polyline. since it was a DFS, the precParc and suivParc make a nice doubly-linked list of the edges in
+// the contour. the first and last edges of the contour are startBord and curBord
+void
+Shape::AddContour (Path * dest, int nbP, Path * *orig, int startBord, int curBord, bool splitWhenForced)
+{
+ int bord = startBord;
+
+ {
+ dest->MoveTo (getPoint(getEdge(bord).st).x);
+ }
+
+ while (bord >= 0)
+ {
+ int nPiece = ebData[bord].pieceID;
+ int nPath = ebData[bord].pathID;
+
+ if (nPath < 0 || nPath >= nbP || orig[nPath] == nullptr)
+ {
+ // segment batard
+ dest->LineTo (getPoint(getEdge(bord).en).x);
+ bord = swdData[bord].suivParc;
+ }
+ else
+ {
+ Path *from = orig[nPath];
+ if (nPiece < 0 || nPiece >= int(from->descr_cmd.size()))
+ {
+ // segment batard
+ dest->LineTo (getPoint(getEdge(bord).en).x);
+ bord = swdData[bord].suivParc;
+ }
+ else
+ {
+ int nType = from->descr_cmd[nPiece]->getType();
+ if (nType == descr_close || nType == descr_moveto
+ || nType == descr_forced)
+ {
+ // devrait pas arriver
+ dest->LineTo (getPoint(getEdge(bord).en).x);
+ bord = swdData[bord].suivParc;
+ }
+ else if (nType == descr_lineto)
+ {
+ bord = ReFormeLineTo (bord, curBord, dest, from);
+ }
+ else if (nType == descr_arcto)
+ {
+ bord = ReFormeArcTo (bord, curBord, dest, from);
+ }
+ else if (nType == descr_cubicto)
+ {
+ bord = ReFormeCubicTo (bord, curBord, dest, from);
+ }
+ else if (nType == descr_bezierto)
+ {
+ PathDescrBezierTo* nBData =
+ dynamic_cast<PathDescrBezierTo *>(from->descr_cmd[nPiece]);
+
+ if (nBData->nb == 0)
+ {
+ bord = ReFormeLineTo (bord, curBord, dest, from);
+ }
+ else
+ {
+ bord = ReFormeBezierTo (bord, curBord, dest, from);
+ }
+ }
+ else if (nType == descr_interm_bezier)
+ {
+ bord = ReFormeBezierTo (bord, curBord, dest, from);
+ }
+ else
+ {
+ // devrait pas arriver non plus
+ dest->LineTo (getPoint(getEdge(bord).en).x);
+ bord = swdData[bord].suivParc;
+ }
+ if (bord >= 0 && getPoint(getEdge(bord).st).totalDegree() > 2 ) {
+ dest->ForcePoint ();
+ } else if ( bord >= 0 && getPoint(getEdge(bord).st).oldDegree > 2 && getPoint(getEdge(bord).st).totalDegree() == 2) {
+ if ( splitWhenForced ) {
+ // pour les coupures
+ dest->ForcePoint ();
+ } else {
+ if ( _has_back_data ) {
+ int prevEdge=getPoint(getEdge(bord).st).incidentEdge[FIRST];
+ int nextEdge=getPoint(getEdge(bord).st).incidentEdge[LAST];
+ if ( getEdge(prevEdge).en != getEdge(bord).st ) {
+ int swai=prevEdge;prevEdge=nextEdge;nextEdge=swai;
+ }
+ if ( ebData[prevEdge].pieceID == ebData[nextEdge].pieceID && ebData[prevEdge].pathID == ebData[nextEdge].pathID ) {
+ if ( fabs(ebData[prevEdge].tEn-ebData[nextEdge].tSt) < 0.05 ) {
+ } else {
+ dest->ForcePoint ();
+ }
+ } else {
+ dest->ForcePoint ();
+ }
+ } else {
+ dest->ForcePoint ();
+ }
+ }
+ }
+ }
+ }
+ }
+ dest->Close ();
+}
+
+int
+Shape::ReFormeLineTo (int bord, int /*curBord*/, Path * dest, Path * /*orig*/)
+{
+ int nPiece = ebData[bord].pieceID;
+ int nPath = ebData[bord].pathID;
+ double /*ts=ebData[bord].tSt, */ te = ebData[bord].tEn;
+ Geom::Point nx = getPoint(getEdge(bord).en).x;
+ bord = swdData[bord].suivParc;
+ while (bord >= 0)
+ {
+ if (getPoint(getEdge(bord).st).totalDegree() > 2
+ || getPoint(getEdge(bord).st).oldDegree > 2)
+ {
+ break;
+ }
+ if (ebData[bord].pieceID == nPiece && ebData[bord].pathID == nPath)
+ {
+ if (fabs (te - ebData[bord].tSt) > 0.0001)
+ break;
+ nx = getPoint(getEdge(bord).en).x;
+ te = ebData[bord].tEn;
+ }
+ else
+ {
+ break;
+ }
+ bord = swdData[bord].suivParc;
+ }
+ {
+ dest->LineTo (nx);
+ }
+ return bord;
+}
+
+int
+Shape::ReFormeArcTo (int bord, int /*curBord*/, Path * dest, Path * from)
+{
+ int nPiece = ebData[bord].pieceID;
+ int nPath = ebData[bord].pathID;
+ double ts = ebData[bord].tSt, te = ebData[bord].tEn;
+ // double px=pts[getEdge(bord).st].x,py=pts[getEdge(bord).st].y;
+ Geom::Point nx = getPoint(getEdge(bord).en).x;
+ bord = swdData[bord].suivParc;
+ while (bord >= 0)
+ {
+ if (getPoint(getEdge(bord).st).totalDegree() > 2
+ || getPoint(getEdge(bord).st).oldDegree > 2)
+ {
+ break;
+ }
+ if (ebData[bord].pieceID == nPiece && ebData[bord].pathID == nPath)
+ {
+ if (fabs (te - ebData[bord].tSt) > 0.0001)
+ {
+ break;
+ }
+ nx = getPoint(getEdge(bord).en).x;
+ te = ebData[bord].tEn;
+ }
+ else
+ {
+ break;
+ }
+ bord = swdData[bord].suivParc;
+ }
+ double sang, eang;
+ PathDescrArcTo* nData = dynamic_cast<PathDescrArcTo *>(from->descr_cmd[nPiece]);
+ bool nLarge = nData->large;
+ bool nClockwise = nData->clockwise;
+ Path::ArcAngles (from->PrevPoint (nPiece - 1), nData->p,nData->rx,nData->ry,nData->angle*M_PI/180.0, nLarge, nClockwise, sang, eang);
+ if (nClockwise)
+ {
+ if (sang < eang)
+ sang += 2 * M_PI;
+ }
+ else
+ {
+ if (sang > eang)
+ sang -= 2 * M_PI;
+ }
+ double delta = eang - sang;
+ double ndelta = delta * (te - ts);
+ if (ts > te)
+ nClockwise = !nClockwise;
+ if (ndelta < 0)
+ ndelta = -ndelta;
+ if (ndelta > M_PI)
+ nLarge = true;
+ else
+ nLarge = false;
+ /* if ( delta < 0 ) delta=-delta;
+ if ( ndelta < 0 ) ndelta=-ndelta;
+ if ( ( delta < M_PI && ndelta < M_PI ) || ( delta >= M_PI && ndelta >= M_PI ) ) {
+ if ( ts < te ) {
+ } else {
+ nClockwise=!(nClockwise);
+ }
+ } else {
+ // nLarge=!(nLarge);
+ nLarge=false; // c'est un sous-segment -> l'arc ne peut que etre plus petit
+ if ( ts < te ) {
+ } else {
+ nClockwise=!(nClockwise);
+ }
+ }*/
+ {
+ PathDescrArcTo *nData = dynamic_cast<PathDescrArcTo *>(from->descr_cmd[nPiece]);
+ dest->ArcTo (nx, nData->rx,nData->ry,nData->angle, nLarge, nClockwise);
+ }
+ return bord;
+}
+
+int
+Shape::ReFormeCubicTo (int bord, int /*curBord*/, Path * dest, Path * from)
+{
+ int nPiece = ebData[bord].pieceID;
+ int nPath = ebData[bord].pathID;
+ double ts = ebData[bord].tSt, te = ebData[bord].tEn;
+ Geom::Point nx = getPoint(getEdge(bord).en).x;
+ bord = swdData[bord].suivParc;
+ while (bord >= 0)
+ {
+ if (getPoint(getEdge(bord).st).totalDegree() > 2
+ || getPoint(getEdge(bord).st).oldDegree > 2)
+ {
+ break;
+ }
+ if (ebData[bord].pieceID == nPiece && ebData[bord].pathID == nPath)
+ {
+ if (fabs (te - ebData[bord].tSt) > 0.0001)
+ {
+ break;
+ }
+ nx = getPoint(getEdge(bord).en).x;
+ te = ebData[bord].tEn;
+ }
+ else
+ {
+ break;
+ }
+ bord = swdData[bord].suivParc;
+ }
+ Geom::Point prevx = from->PrevPoint (nPiece - 1);
+
+ Geom::Point sDx, eDx;
+ {
+ PathDescrCubicTo *nData = dynamic_cast<PathDescrCubicTo *>(from->descr_cmd[nPiece]);
+ Path::CubicTangent (ts, sDx, prevx,nData->start,nData->p,nData->end);
+ Path::CubicTangent (te, eDx, prevx,nData->start,nData->p,nData->end);
+ }
+ sDx *= (te - ts);
+ eDx *= (te - ts);
+ {
+ dest->CubicTo (nx,sDx,eDx);
+ }
+ return bord;
+}
+
+int
+Shape::ReFormeBezierTo (int bord, int /*curBord*/, Path * dest, Path * from)
+{
+ int nPiece = ebData[bord].pieceID;
+ int nPath = ebData[bord].pathID;
+ double ts = ebData[bord].tSt, te = ebData[bord].tEn;
+ int ps = nPiece, pe = nPiece;
+ Geom::Point px = getPoint(getEdge(bord).st).x;
+ Geom::Point nx = getPoint(getEdge(bord).en).x;
+ int inBezier = -1, nbInterm = -1;
+ int typ;
+ typ = from->descr_cmd[nPiece]->getType();
+ PathDescrBezierTo *nBData = nullptr;
+ if (typ == descr_bezierto)
+ {
+ nBData = dynamic_cast<PathDescrBezierTo *>(from->descr_cmd[nPiece]);
+ inBezier = nPiece;
+ nbInterm = nBData->nb;
+ }
+ else
+ {
+ int n = nPiece - 1;
+ while (n > 0)
+ {
+ typ = from->descr_cmd[n]->getType();
+ if (typ == descr_bezierto)
+ {
+ inBezier = n;
+ nBData = dynamic_cast<PathDescrBezierTo *>(from->descr_cmd[n]);
+ nbInterm = nBData->nb;
+ break;
+ }
+ n--;
+ }
+ if (inBezier < 0)
+ {
+ bord = swdData[bord].suivParc;
+ dest->LineTo (nx);
+ return bord;
+ }
+ }
+ bord = swdData[bord].suivParc;
+ while (bord >= 0)
+ {
+ if (getPoint(getEdge(bord).st).totalDegree() > 2
+ || getPoint(getEdge(bord).st).oldDegree > 2)
+ {
+ break;
+ }
+ if (ebData[bord].pathID == nPath)
+ {
+ if (ebData[bord].pieceID < inBezier
+ || ebData[bord].pieceID >= inBezier + nbInterm)
+ break;
+ if (ebData[bord].pieceID == pe
+ && fabs (te - ebData[bord].tSt) > 0.0001)
+ break;
+ if (ebData[bord].pieceID != pe
+ && (ebData[bord].tSt > 0.0001 && ebData[bord].tSt < 0.9999))
+ break;
+ if (ebData[bord].pieceID != pe && (te > 0.0001 && te < 0.9999))
+ break;
+ nx = getPoint(getEdge(bord).en).x;
+ te = ebData[bord].tEn;
+ pe = ebData[bord].pieceID;
+ }
+ else
+ {
+ break;
+ }
+ bord = swdData[bord].suivParc;
+ }
+
+ g_return_val_if_fail(nBData != nullptr, 0);
+
+ if (pe == ps)
+ {
+ ReFormeBezierChunk (px, nx, dest, inBezier, nbInterm, from, ps,
+ ts, te);
+ }
+ else if (ps < pe)
+ {
+ if (ts < 0.0001)
+ {
+ if (te > 0.9999)
+ {
+ dest->BezierTo (nx);
+ for (int i = ps; i <= pe; i++)
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ }
+ else
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+1]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ dest->BezierTo (tx);
+ for (int i = ps; i < pe; i++)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ ReFormeBezierChunk (tx, nx, dest, inBezier, nbInterm,
+ from, pe, 0.0, te);
+ }
+ }
+ else
+ {
+ if (te > 0.9999)
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+1]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+2]);
+ tx = (psData->p + pnData->p) / 2;
+ }
+ ReFormeBezierChunk (px, tx, dest, inBezier, nbInterm,
+ from, ps, ts, 1.0);
+ dest->BezierTo (nx);
+ for (int i = ps + 1; i <= pe; i++)
+ {
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ }
+ else
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+1]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+2]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ ReFormeBezierChunk (px, tx, dest, inBezier, nbInterm,
+ from, ps, ts, 1.0);
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+1]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ dest->BezierTo (tx);
+ for (int i = ps + 1; i <= pe; i++)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ ReFormeBezierChunk (tx, nx, dest, inBezier, nbInterm,
+ from, pe, 0.0, te);
+ }
+ }
+ }
+ else
+ {
+ if (ts > 0.9999)
+ {
+ if (te < 0.0001)
+ {
+ dest->BezierTo (nx);
+ for (int i = ps; i >= pe; i--)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ }
+ else
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+1]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+2]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ dest->BezierTo (tx);
+ for (int i = ps; i > pe; i--)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i+1]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ ReFormeBezierChunk (tx, nx, dest, inBezier, nbInterm,
+ from, pe, 1.0, te);
+ }
+ }
+ else
+ {
+ if (te < 0.0001)
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+1]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ ReFormeBezierChunk (px, tx, dest, inBezier, nbInterm,
+ from, ps, ts, 0.0);
+ dest->BezierTo (nx);
+ for (int i = ps + 1; i >= pe; i--)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ }
+ else
+ {
+ Geom::Point tx;
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[ps+1]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ ReFormeBezierChunk (px, tx, dest, inBezier, nbInterm,
+ from, ps, ts, 0.0);
+ {
+ PathDescrIntermBezierTo* psData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+1]);
+ PathDescrIntermBezierTo* pnData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[pe+2]);
+ tx = (pnData->p + psData->p) / 2;
+ }
+ dest->BezierTo (tx);
+ for (int i = ps + 1; i > pe; i--)
+ {
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[i]);
+ dest->IntermBezierTo (nData->p);
+ }
+ dest->EndBezierTo ();
+ ReFormeBezierChunk (tx, nx, dest, inBezier, nbInterm,
+ from, pe, 1.0, te);
+ }
+ }
+ }
+ return bord;
+}
+
+void
+Shape::ReFormeBezierChunk (Geom::Point px, Geom::Point nx,
+ Path * dest, int inBezier, int nbInterm,
+ Path * from, int p, double ts, double te)
+{
+ PathDescrBezierTo* nBData = dynamic_cast<PathDescrBezierTo*>(from->descr_cmd[inBezier]);
+ Geom::Point bstx = from->PrevPoint (inBezier - 1);
+ Geom::Point benx = nBData->p;
+
+ Geom::Point mx;
+ if (p == inBezier)
+ {
+ // premier bout
+ if (nbInterm <= 1)
+ {
+ // seul bout de la spline
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[inBezier+1]);
+ mx = nData->p;
+ }
+ else
+ {
+ // premier bout d'une spline qui en contient plusieurs
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[inBezier+1]);
+ mx = nData->p;
+ nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[inBezier+2]);
+ benx = (nData->p + mx) / 2;
+ }
+ }
+ else if (p == inBezier + nbInterm - 1)
+ {
+ // dernier bout
+ // si nbInterm == 1, le cas a deja ete traite
+ // donc dernier bout d'une spline qui en contient plusieurs
+ PathDescrIntermBezierTo* nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[inBezier+nbInterm]);
+ mx = nData->p;
+ nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[inBezier+nbInterm-1]);
+ bstx = (nData->p + mx) / 2;
+ }
+ else
+ {
+ // la spline contient forcément plusieurs bouts, et ce n'est ni le premier ni le dernier
+ PathDescrIntermBezierTo *nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[p+1]);
+ mx = nData->p;
+ nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[p]);
+ bstx = (nData->p + mx) / 2;
+ nData = dynamic_cast<PathDescrIntermBezierTo*>(from->descr_cmd[p+2]);
+ benx = (nData->p + mx) / 2;
+ }
+ Geom::Point cx;
+ {
+ Path::QuadraticPoint ((ts + te) / 2, cx, bstx, mx, benx);
+ }
+ cx = 2 * cx - (px + nx) / 2;
+ {
+ dest->BezierTo (nx);
+ dest->IntermBezierTo (cx);
+ dest->EndBezierTo ();
+ }
+}
+
+#undef MiscNormalize
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 19:43:30 +0000