Code

* src/path-prefix.h: Add missing CREATE_* directory locations
[inkscape.git] / src / splivarot.cpp
1 #define __SP_LIVAROT_C__
2 /*
3  *  splivarot.cpp
4  *  Inkscape
5  *
6  *  Created by fred on Fri Dec 05 2003.
7  *  tweaked endlessly by bulia byak <buliabyak@users.sf.net>
8  *  public domain
9  *
10  */
12 /*
13  * contains lots of stitched pieces of path-chemistry.c
14  */
16 #ifdef HAVE_CONFIG_H
17 # include <config.h>
18 #endif
20 #include <vector>
21 #include "xml/repr.h"
22 #include "svg/svg.h"
23 #include "sp-path.h"
24 #include "sp-text.h"
25 #include "sp-item-group.h"
26 #include "style.h"
27 #include "inkscape.h"
28 #include "document.h"
29 #include "message-stack.h"
30 #include "selection.h"
31 #include "desktop-handles.h"
32 #include "desktop.h"
33 #include "display/canvas-bpath.h"
34 #include "display/curve.h"
35 #include <glibmm/i18n.h>
36 #include "prefs-utils.h"
38 #include "libnr/n-art-bpath.h"
39 #include "libnr/nr-path.h"
40 #include "xml/repr.h"
41 #include "xml/repr-sorting.h"
43 #include "livarot/Path.h"
44 #include "livarot/Shape.h"
46 #include "splivarot.h"
48 bool   Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
50 void sp_selected_path_boolop(bool_op bop);
51 void sp_selected_path_do_offset(bool expand, double prefOffset);
52 void sp_selected_path_create_offset_object(int expand, bool updating);
54 void
55 sp_selected_path_union()
56 {
57     sp_selected_path_boolop(bool_op_union);
58 }
60 void
61 sp_selected_path_intersect()
62 {
63     sp_selected_path_boolop(bool_op_inters);
64 }
66 void
67 sp_selected_path_diff()
68 {
69     sp_selected_path_boolop(bool_op_diff);
70 }
72 void
73 sp_selected_path_symdiff()
74 {
75     sp_selected_path_boolop(bool_op_symdiff);
76 }
77 void
78 sp_selected_path_cut()
79 {
80     sp_selected_path_boolop(bool_op_cut);
81 }
82 void
83 sp_selected_path_slice()
84 {
85     sp_selected_path_boolop(bool_op_slice);
86 }
89 // boolean operations
90 // take the source paths from the file, do the operation, delete the originals and add the results
91 void
92 sp_selected_path_boolop(bool_op bop)
93 {
94     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
96     Inkscape::Selection *selection = sp_desktop_selection(desktop);
98     GSList *il = (GSList *) selection->itemList();
100     if (g_slist_length(il) < 2) {
101         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
102         return;
103     }
105     if (g_slist_length(il) > 2) {
106         if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
107             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
108             return;
109         }
110     }
112     // reverseOrderForOp marks whether the order of the list is the top->down order
113     // it's only used when there are 2 objects, and for operations who need to know the
114     // topmost object (differences, cuts)
115     bool reverseOrderForOp = false;
117     // mettre les elements de la liste dans l'ordre pour ces operations
118     if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
119         // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
120         Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
121         Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
123         if (a == NULL || b == NULL) {
124             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
125             return;
126         }
128         if (Ancetre(a, b)) {
129             // a is the parent of b, already in the proper order
130         } else if (Ancetre(b, a)) {
131             // reverse order
132             reverseOrderForOp = true;
133         } else {
135             // objects are not in parent/child relationship;
136             // find their lowest common ancestor
137             Inkscape::XML::Node *dad = LCA(a, b);
138             if (dad == NULL) {
139                 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
140                 return;
141             }
143             // find the children of the LCA that lead from it to the a and b
144             Inkscape::XML::Node *as = AncetreFils(a, dad);
145             Inkscape::XML::Node *bs = AncetreFils(b, dad);
147             // find out which comes first
148             for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
149                 if (child == as) {
150                     /* a first, so reverse. */
151                     reverseOrderForOp = true;
152                     break;
153                 }
154                 if (child == bs)
155                     break;
156             }
157         }
158     }
160     il = g_slist_copy(il);
162     // first check if all the input objects have shapes
163     // otherwise bail out
164     for (GSList *l = il; l != NULL; l = l->next)
165     {
166         SPItem *item = SP_ITEM(l->data);
167         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
168         {
169             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
170             g_slist_free(il);
171             return;
172         }
173     }
175     // extract the livarot Paths from the source objects
176     // also get the winding rule specified in the style
177     int nbOriginaux = g_slist_length(il);
178     std::vector<Path *> originaux(nbOriginaux);
179     std::vector<FillRule> origWind(nbOriginaux);
180     int curOrig;
181     {
182         curOrig = 0;
183         for (GSList *l = il; l != NULL; l = l->next)
184         {
185             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
186             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
187             if (val && strcmp(val, "nonzero") == 0) {
188                 origWind[curOrig]= fill_nonZero;
189             } else if (val && strcmp(val, "evenodd") == 0) {
190                 origWind[curOrig]= fill_oddEven;
191             } else {
192                 origWind[curOrig]= fill_nonZero;
193             }
195             originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
196             if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
197             {
198                 for (int i = curOrig; i >= 0; i--) delete originaux[i];
199                 g_slist_free(il);
200                 return;
201             }
202             curOrig++;
203         }
204     }
205     // reverse if needed
206     // note that the selection list keeps its order
207     if ( reverseOrderForOp ) {
208         Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
209         FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
210     }
212     // and work
213     // some temporary instances, first
214     Shape *theShapeA = new Shape;
215     Shape *theShapeB = new Shape;
216     Shape *theShape = new Shape;
217     Path *res = new Path;
218     res->SetBackData(false);
219     Path::cut_position  *toCut=NULL;
220     int                  nbToCut=0;
222     if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
223         // true boolean op
224         // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
225         originaux[0]->ConvertWithBackData(0.1);
227         originaux[0]->Fill(theShape, 0);
229         theShapeA->ConvertToShape(theShape, origWind[0]);
231         curOrig = 1;
232         for (GSList *l = il->next; l != NULL; l = l->next) {
233             originaux[curOrig]->ConvertWithBackData(0.1);
235             originaux[curOrig]->Fill(theShape, curOrig);
237             theShapeB->ConvertToShape(theShape, origWind[curOrig]);
239             // les elements arrivent en ordre inverse dans la liste
240             theShape->Booleen(theShapeB, theShapeA, bop);
242             {
243                 Shape *swap = theShape;
244                 theShape = theShapeA;
245                 theShapeA = swap;
246             }
247             curOrig++;
248         }
250         {
251             Shape *swap = theShape;
252             theShape = theShapeA;
253             theShapeA = swap;
254         }
256     } else if ( bop == bool_op_cut ) {
257         // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
258         // technically, the cut path is not necessarily a polygon (thus has no winding rule)
259         // it is just uncrossed, and cleaned from duplicate edges and points
260         // then it's fed to Booleen() which will uncross it against the other path
261         // then comes the trick: each edge of the cut path is duplicated (one in each direction),
262         // thus making a polygon. the weight of the edges of the cut are all 0, but
263         // the Booleen need to invert the ones inside the source polygon (for the subsequent
264         // ConvertToForme)
266         // the cut path needs to have the highest pathID in the back data
267         // that's how the Booleen() function knows it's an edge of the cut
269         // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
270         // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
271         // left it at 1.0. Investigate replacing this by a combination of difference and
272         // intersection of the same two paths. -- bb
273         {
274             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
275             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
276         }
277         originaux[0]->ConvertWithBackData(1.0);
279         originaux[0]->Fill(theShape, 0);
281         theShapeA->ConvertToShape(theShape, origWind[0]);
283         originaux[1]->ConvertWithBackData(1.0);
285         originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
287         theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
289         // les elements arrivent en ordre inverse dans la liste
290         theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
292     } else if ( bop == bool_op_slice ) {
293         // slice is not really a boolean operation
294         // you just put the 2 shapes in a single polygon, uncross it
295         // the points where the degree is > 2 are intersections
296         // just check it's an intersection on the path you want to cut, and keep it
297         // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
298         // make new subpath at each one of these positions
299         // inversion pour l'op\8eration
300         {
301             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
302             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
303         }
304         originaux[0]->ConvertWithBackData(1.0);
306         originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
308         originaux[1]->ConvertWithBackData(1.0);
310         originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
312         theShape->ConvertToShape(theShapeA, fill_justDont);
314         if ( theShape->hasBackData() ) {
315             // should always be the case, but ya never know
316             {
317                 for (int i = 0; i < theShape->numberOfPoints(); i++) {
318                     if ( theShape->getPoint(i).totalDegree() > 2 ) {
319                         // possibly an intersection
320                         // we need to check that at least one edge from the source path is incident to it
321                         // before we declare it's an intersection
322                         int cb = theShape->getPoint(i).incidentEdge[FIRST];
323                         int   nbOrig=0;
324                         int   nbOther=0;
325                         int   piece=-1;
326                         float t=0.0;
327                         while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
328                             if ( theShape->ebData[cb].pathID == 0 ) {
329                                 // the source has an edge incident to the point, get its position on the path
330                                 piece=theShape->ebData[cb].pieceID;
331                                 if ( theShape->getEdge(cb).st == i ) {
332                                     t=theShape->ebData[cb].tSt;
333                                 } else {
334                                     t=theShape->ebData[cb].tEn;
335                                 }
336                                 nbOrig++;
337                             }
338                             if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
339                             cb=theShape->NextAt(i, cb);
340                         }
341                         if ( nbOrig > 0 && nbOther > 0 ) {
342                             // point incident to both path and cut: an intersection
343                             // note that you only keep one position on the source; you could have degenerate
344                             // cases where the source crosses itself at this point, and you wouyld miss an intersection
345                             toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
346                             toCut[nbToCut].piece=piece;
347                             toCut[nbToCut].t=t;
348                             nbToCut++;
349                         }
350                     }
351                 }
352             }
353             {
354                 // i think it's useless now
355                 int i = theShape->numberOfEdges() - 1;
356                 for (;i>=0;i--) {
357                     if ( theShape->ebData[i].pathID == 1 ) {
358                         theShape->SubEdge(i);
359                     }
360                 }
361             }
363         }
364     }
366     int*    nesting=NULL;
367     int*    conts=NULL;
368     int     nbNest=0;
369     // pour compenser le swap juste avant
370     if ( bop == bool_op_slice ) {
371 //    theShape->ConvertToForme(res, nbOriginaux, originaux, true);
372 //    res->ConvertForcedToMoveTo();
373         res->Copy(originaux[0]);
374         res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
375         free(toCut);
376     } else if ( bop == bool_op_cut ) {
377         // il faut appeler pour desallouer PointData (pas vital, mais bon)
378         // the Booleen() function did not deallocated the point_data array in theShape, because this
379         // function needs it.
380         // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
381         // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
382         theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
383     } else {
384         theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
385     }
387     delete theShape;
388     delete theShapeA;
389     delete theShapeB;
390     for (int i = 0; i < nbOriginaux; i++)  delete originaux[i];
392     if (res->descr_cmd.size() <= 1)
393     {
394         // only one command, presumably a moveto: it isn't a path
395         for (GSList *l = il; l != NULL; l = l->next)
396         {
397             SP_OBJECT(l->data)->deleteObject();
398         }
399         sp_document_done(sp_desktop_document(desktop));
400         selection->clear();
402         delete res;
403         g_slist_free(il);
404         return;
405     }
407     // remember important aspects of the source path, to be restored
408     Inkscape::XML::Node *repr_source;
409     if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
410         if (reverseOrderForOp) {
411              repr_source = SP_OBJECT_REPR(il->data);
412         } else {
413              repr_source = SP_OBJECT_REPR(il->next->data);
414         }
415     } else {
416         // find out the bottom object
417         GSList *sorted = g_slist_copy((GSList *) selection->reprList());
419         sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
420         repr_source = ((Inkscape::XML::Node *) sorted->data);
421         g_slist_free(sorted);
422     }
423     gint pos = repr_source->position();
424     Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
425     char const *id = repr_source->attribute("id");
426     char const *style = repr_source->attribute("style");
429     // remove source paths
430     selection->clear();
431     for (GSList *l = il; l != NULL; l = l->next) {
432         // if this is the bottommost object,
433         if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
434             // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
435             SP_OBJECT(l->data)->deleteObject(false);
436         } else {
437             // delete the object for real, so that its clones can take appropriate action
438             SP_OBJECT(l->data)->deleteObject();
439         }
440     }
441     g_slist_free(il);
443     // premultiply by the inverse of parent's repr
444     SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
445     NR::Matrix local = sp_item_i2doc_affine(parent_item);
446     gchar affinestr[80];
447     gchar *transform = NULL;
448     if (!local.test_identity() && sp_svg_transform_write(affinestr, 79, local.inverse())) {
449         transform = affinestr;
450     }
452     // now that we have the result, add it on the canvas
453     if ( bop == bool_op_cut || bop == bool_op_slice ) {
454         int    nbRP=0;
455         Path** resPath;
456         if ( bop == bool_op_slice ) {
457             // there are moveto's at each intersection, but it's still one unique path
458             // so break it down and add each subpath independently
459             // we could call break_apart to do this, but while we have the description...
460             resPath=res->SubPaths(nbRP, false);
461         } else {
462             // cut operation is a bit wicked: you need to keep holes
463             // that's why you needed the nesting
464             // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
465             // to get the path for each part of the polygon. that's why you need the nesting info:
466             // to know in wich subpath to add a subpath
467             resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
469             // cleaning
470             if ( conts ) free(conts);
471             if ( nesting ) free(nesting);
472         }
474         // add all the pieces resulting from cut or slice
475         for (int i=0;i<nbRP;i++) {
476             gchar *d = resPath[i]->svg_dump_path();
478             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
479             repr->setAttribute("style", style);
480             repr->setAttribute("d", d);
481             g_free(d);
483             // for slice, remove fill
484             if (bop == bool_op_slice) {
485                 SPCSSAttr *css;
487                 css = sp_repr_css_attr_new();
488                 sp_repr_css_set_property(css, "fill", "none");
490                 sp_repr_css_change(repr, css, "style");
492                 sp_repr_css_attr_unref(css);
493             }
495             // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
496             // this means it's basically random which of the pieces inherits the original's id and clones
497             // a better algorithm might figure out e.g. the biggest piece
498             repr->setAttribute("id", id);
500             repr->setAttribute("transform", transform);
502             // add the new repr to the parent
503             parent->appendChild(repr);
505             // move to the saved position
506             repr->setPosition(pos > 0 ? pos : 0);
508             selection->add(repr);
509             Inkscape::GC::release(repr);
511             delete resPath[i];
512         }
513         if ( resPath ) free(resPath);
515     } else {
516         gchar *d = res->svg_dump_path();
518         Inkscape::XML::Node *repr = sp_repr_new("svg:path");
519         repr->setAttribute("style", style);
521         repr->setAttribute("d", d);
522         g_free(d);
524         repr->setAttribute("transform", transform);
526         repr->setAttribute("id", id);
527         parent->appendChild(repr);
528         repr->setPosition(pos > 0 ? pos : 0);
530         selection->add(repr);
531         Inkscape::GC::release(repr);
532     }
534     sp_document_done(sp_desktop_document(desktop));
536     delete res;
540 void
541 sp_selected_path_outline()
543     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
545     Inkscape::Selection *selection = sp_desktop_selection(desktop);
547     if (selection->isEmpty()) {
548         // TRANSLATORS: "to outline" means "to convert stroke to path"
549         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to outline."));
550         return;
551     }
553     bool did = false;
555     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
556          items != NULL;
557          items = items->next) {
559         SPItem *item = (SPItem *) items->data;
561         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
562             continue;
564         SPCurve *curve = NULL;
565         if (SP_IS_SHAPE(item)) {
566             curve = sp_shape_get_curve(SP_SHAPE(item));
567             if (curve == NULL)
568                 continue;
569         }
570         if (SP_IS_TEXT(item)) {
571             curve = SP_TEXT(item)->getNormalizedBpath();
572             if (curve == NULL)
573                 continue;
574         }
576         {   // pas de stroke pas de chocolat
577             SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
578             gchar const *val = sp_repr_css_property(css, "stroke", NULL);
580             if (val == NULL || strcmp(val, "none") == 0) {
581                 sp_curve_unref(curve);
582                 continue;
583             }
584         }
586         // remember old stroke style, to be set on fill
587         SPCSSAttr *ncss;
588         {
589             SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
590             gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
591             gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
593             ncss = sp_repr_css_attr_new();
595             sp_repr_css_set_property(ncss, "stroke", "none");
596             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
597             sp_repr_css_set_property(ncss, "fill", val);
598             if ( opac ) {
599                 sp_repr_css_set_property(ncss, "fill-opacity", opac);
600             } else {
601                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
602             }
603         }
605         NR::Matrix const transform(item->transform);
606         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
608         float o_width, o_miter;
609         JoinType o_join;
610         ButtType o_butt;
612         {
613             SPStyle *i_style = SP_OBJECT(item)->style;
614             int jointype, captype;
616             jointype = i_style->stroke_linejoin.computed;
617             captype = i_style->stroke_linecap.computed;
618             o_width = i_style->stroke_width.computed;
620             switch (jointype) {
621                 case SP_STROKE_LINEJOIN_MITER:
622                     o_join = join_pointy;
623                     break;
624                 case SP_STROKE_LINEJOIN_ROUND:
625                     o_join = join_round;
626                     break;
627                 default:
628                     o_join = join_straight;
629                     break;
630             }
632             switch (captype) {
633                 case SP_STROKE_LINECAP_SQUARE:
634                     o_butt = butt_square;
635                     break;
636                 case SP_STROKE_LINECAP_ROUND:
637                     o_butt = butt_round;
638                     break;
639                 default:
640                     o_butt = butt_straight;
641                     break;
642             }
644             if (o_width < 0.1)
645                 o_width = 0.1;
646             o_miter = i_style->stroke_miterlimit.value * o_width;
647         }
649         Path *orig = Path_for_item(item, false);
650         if (orig == NULL) {
651             g_free(style);
652             sp_curve_unref(curve);
653             continue;
654         }
656         Path *res = new Path;
657         res->SetBackData(false);
660         {
661             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
663             orig->Coalesce(0.5 * o_width);
665             Shape *theShape = new Shape;
666             Shape *theRes = new Shape;
668             res->ConvertWithBackData(1.0);
669             res->Fill(theShape, 0);
670             theRes->ConvertToShape(theShape, fill_positive);
672             Path *originaux[1];
673             originaux[0] = res;
674             theRes->ConvertToForme(orig, 1, originaux);
676             delete theShape;
677             delete theRes;
678         }
680         if (orig->descr_cmd.size() <= 1) {
681             // ca a merd\8e, ou bien le resultat est vide
682             delete res;
683             delete orig;
684             g_free(style);
685             continue;
686         }
688         did = true;
690         sp_curve_unref(curve);
691         // remember the position of the item
692         gint pos = SP_OBJECT_REPR(item)->position();
693         // remember parent
694         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
695         // remember id
696         char const *id = SP_OBJECT_REPR(item)->attribute("id");
698         selection->remove(item);
699         SP_OBJECT(item)->deleteObject(false);
701         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
703             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
705             // restore old style
706             repr->setAttribute("style", style);
708             // set old stroke style on fill
709             sp_repr_css_change(repr, ncss, "style");
711             sp_repr_css_attr_unref(ncss);
713             gchar *str = orig->svg_dump_path();
714             repr->setAttribute("d", str);
715             g_free(str);
717             // add the new repr to the parent
718             parent->appendChild(repr);
720             // move to the saved position
721             repr->setPosition(pos > 0 ? pos : 0);
723             repr->setAttribute("id", id);
725             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
726             sp_item_write_transform(newitem, repr, transform);
728             selection->add(repr);
730             Inkscape::GC::release(repr);
731         }
733         delete res;
734         delete orig;
735         g_free(style);
737     }
739     if (did) {
740         sp_document_done(sp_desktop_document(desktop));
741     } else {
742         // TRANSLATORS: "to outline" means "to convert stroke to path"
743         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> to outline in the selection."));
744         return;
745     }
749 void
750 sp_selected_path_offset()
752     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
754     sp_selected_path_do_offset(true, prefOffset);
756 void
757 sp_selected_path_inset()
759     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
761     sp_selected_path_do_offset(false, prefOffset);
764 void
765 sp_selected_path_offset_screen(double pixels)
767     sp_selected_path_do_offset(true,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
770 void
771 sp_selected_path_inset_screen(double pixels)
773     sp_selected_path_do_offset(false,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
777 void sp_selected_path_create_offset_object_zero()
779     sp_selected_path_create_offset_object(0, false);
782 void sp_selected_path_create_offset()
784     sp_selected_path_create_offset_object(1, false);
786 void sp_selected_path_create_inset()
788     sp_selected_path_create_offset_object(-1, false);
791 void sp_selected_path_create_updating_offset_object_zero()
793     sp_selected_path_create_offset_object(0, true);
796 void sp_selected_path_create_updating_offset()
798     sp_selected_path_create_offset_object(1, true);
800 void sp_selected_path_create_updating_inset()
802     sp_selected_path_create_offset_object(-1, true);
805 void
806 sp_selected_path_create_offset_object(int expand, bool updating)
808     Inkscape::Selection *selection;
809     Inkscape::XML::Node *repr;
810     SPItem *item;
811     SPCurve *curve;
812     gchar *style, *str;
813     SPDesktop *desktop;
814     float o_width, o_miter;
815     JoinType o_join;
816     ButtType o_butt;
818     curve = NULL;
820     desktop = SP_ACTIVE_DESKTOP;
822     selection = sp_desktop_selection(desktop);
824     item = selection->singleItem();
826     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
827         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
828         return;
829     }
830     if (SP_IS_SHAPE(item))
831     {
832         curve = sp_shape_get_curve(SP_SHAPE(item));
833         if (curve == NULL)
834             return;
835     }
836     if (SP_IS_TEXT(item))
837     {
838         curve = SP_TEXT(item)->getNormalizedBpath();
839         if (curve == NULL)
840             return;
841     }
843     NR::Matrix const transform(item->transform);
845     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
847     style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
849     // remember the position of the item
850     gint pos = SP_OBJECT_REPR(item)->position();
851     // remember parent
852     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
854     {
855         SPStyle *i_style = SP_OBJECT(item)->style;
856         int jointype, captype;
858         jointype = i_style->stroke_linejoin.value;
859         captype = i_style->stroke_linecap.value;
860         o_width = i_style->stroke_width.computed;
861         if (jointype == SP_STROKE_LINEJOIN_MITER)
862         {
863             o_join = join_pointy;
864         }
865         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
866         {
867             o_join = join_round;
868         }
869         else
870         {
871             o_join = join_straight;
872         }
873         if (captype == SP_STROKE_LINECAP_SQUARE)
874         {
875             o_butt = butt_square;
876         }
877         else if (captype == SP_STROKE_LINECAP_ROUND)
878         {
879             o_butt = butt_round;
880         }
881         else
882         {
883             o_butt = butt_straight;
884         }
886         {
887             double prefOffset = 1.0;
888             prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
889             o_width = prefOffset;
890         }
892         if (o_width < 0.01)
893             o_width = 0.01;
894         o_miter = i_style->stroke_miterlimit.value * o_width;
895     }
897     Path *orig = Path_for_item(item, true, false);
898     if (orig == NULL)
899     {
900         g_free(style);
901         sp_curve_unref(curve);
902         return;
903     }
905     Path *res = new Path;
906     res->SetBackData(false);
908     {
909         Shape *theShape = new Shape;
910         Shape *theRes = new Shape;
912         orig->ConvertWithBackData(1.0);
913         orig->Fill(theShape, 0);
915         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
916         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
917         if (val && strcmp(val, "nonzero") == 0)
918         {
919             theRes->ConvertToShape(theShape, fill_nonZero);
920         }
921         else if (val && strcmp(val, "evenodd") == 0)
922         {
923             theRes->ConvertToShape(theShape, fill_oddEven);
924         }
925         else
926         {
927             theRes->ConvertToShape(theShape, fill_nonZero);
928         }
930         Path *originaux[1];
931         originaux[0] = orig;
932         theRes->ConvertToForme(res, 1, originaux);
934         delete theShape;
935         delete theRes;
936     }
938     sp_curve_unref(curve);
940     if (res->descr_cmd.size() <= 1)
941     {
942         // pas vraiment de points sur le resultat
943         // donc il ne reste rien
944         sp_document_done(sp_desktop_document(desktop));
945         selection->clear();
947         delete res;
948         delete orig;
949         g_free(style);
950         return;
951     }
953     {
954         gchar tstr[80];
956         tstr[79] = '\0';
958         repr = sp_repr_new("svg:path");
959         repr->setAttribute("sodipodi:type", "inkscape:offset");
960         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
961                                                           ? o_width
962                                                           : expand < 0
963                                                           ? -o_width
964                                                           : 0 ));
966         str = res->svg_dump_path();
967         repr->setAttribute("inkscape:original", str);
968         g_free(str);
970         if ( updating ) {
971             char const *id = SP_OBJECT(item)->repr->attribute("id");
972             char const *uri = g_strdup_printf("#%s", id);
973             repr->setAttribute("xlink:href", uri);
974             g_free((void *) uri);
975         } else {
976             repr->setAttribute("inkscape:href", NULL);
977         }
979         repr->setAttribute("style", style);
981         // add the new repr to the parent
982         parent->appendChild(repr);
984         // move to the saved position
985         repr->setPosition(pos > 0 ? pos : 0);
987         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
989         if ( updating ) {
990             // on conserve l'original
991             // we reapply the transform to the original (offset will feel it)
992             sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
993         } else {
994             // delete original, apply the transform to the offset
995             SP_OBJECT(item)->deleteObject(false);
996             sp_item_write_transform(nitem, repr, transform);
997         }
999         // The object just created from a temporary repr is only a seed.
1000         // We need to invoke its write which will update its real repr (in particular adding d=)
1001         SP_OBJECT(nitem)->updateRepr();
1003         Inkscape::GC::release(repr);
1005         selection->set(nitem);
1006     }
1008     sp_document_done(sp_desktop_document(desktop));
1010     delete res;
1011     delete orig;
1013     g_free(style);
1027 void
1028 sp_selected_path_do_offset(bool expand, double prefOffset)
1030     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1032     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1034     if (selection->isEmpty()) {
1035         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1036         return;
1037     }
1039     bool did = false;
1041     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1042          items != NULL;
1043          items = items->next) {
1045         SPItem *item = (SPItem *) items->data;
1047         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1048             continue;
1050         SPCurve *curve = NULL;
1051         if (SP_IS_SHAPE(item)) {
1052             curve = sp_shape_get_curve(SP_SHAPE(item));
1053             if (curve == NULL)
1054                 continue;
1055         }
1056         if (SP_IS_TEXT(item)) {
1057             curve = SP_TEXT(item)->getNormalizedBpath();
1058             if (curve == NULL)
1059                 continue;
1060         }
1062         NR::Matrix const transform(item->transform);
1064         sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1066         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1068         float o_width, o_miter;
1069         JoinType o_join;
1070         ButtType o_butt;
1072         {
1073             SPStyle *i_style = SP_OBJECT(item)->style;
1074             int jointype, captype;
1076             jointype = i_style->stroke_linejoin.value;
1077             captype = i_style->stroke_linecap.value;
1078             o_width = i_style->stroke_width.computed;
1080             switch (jointype) {
1081                 case SP_STROKE_LINEJOIN_MITER:
1082                     o_join = join_pointy;
1083                     break;
1084                 case SP_STROKE_LINEJOIN_ROUND:
1085                     o_join = join_round;
1086                     break;
1087                 default:
1088                     o_join = join_straight;
1089                     break;
1090             }
1092             switch (captype) {
1093                 case SP_STROKE_LINECAP_SQUARE:
1094                     o_butt = butt_square;
1095                     break;
1096                 case SP_STROKE_LINECAP_ROUND:
1097                     o_butt = butt_round;
1098                     break;
1099                 default:
1100                     o_butt = butt_straight;
1101                     break;
1102             }
1104             o_width = prefOffset;
1106             if (o_width < 0.1)
1107                 o_width = 0.1;
1108             o_miter = i_style->stroke_miterlimit.value * o_width;
1109         }
1111         Path *orig = Path_for_item(item, false);
1112         if (orig == NULL) {
1113             g_free(style);
1114             sp_curve_unref(curve);
1115             continue;
1116         }
1118         Path *res = new Path;
1119         res->SetBackData(false);
1121         {
1122             Shape *theShape = new Shape;
1123             Shape *theRes = new Shape;
1125             orig->ConvertWithBackData(0.03);
1126             orig->Fill(theShape, 0);
1128             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1129             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1130             if (val && strcmp(val, "nonzero") == 0)
1131             {
1132                 theRes->ConvertToShape(theShape, fill_nonZero);
1133             }
1134             else if (val && strcmp(val, "evenodd") == 0)
1135             {
1136                 theRes->ConvertToShape(theShape, fill_oddEven);
1137             }
1138             else
1139             {
1140                 theRes->ConvertToShape(theShape, fill_nonZero);
1141             }
1143             // et maintenant: offset
1144             // methode inexacte
1145 /*                      Path *originaux[1];
1146                         originaux[0] = orig;
1147                         theRes->ConvertToForme(res, 1, originaux);
1149                         if (expand) {
1150                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1151                         } else {
1152                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1153                         }
1155                         orig->ConvertWithBackData(1.0);
1156                         orig->Fill(theShape, 0);
1157                         theRes->ConvertToShape(theShape, fill_positive);
1158                         originaux[0] = orig;
1159                         theRes->ConvertToForme(res, 1, originaux);
1161                         if (o_width >= 0.5) {
1162                         //     res->Coalesce(1.0);
1163                         res->ConvertEvenLines(1.0);
1164                         res->Simplify(1.0);
1165                         } else {
1166                         //      res->Coalesce(o_width);
1167                         res->ConvertEvenLines(1.0*o_width);
1168                         res->Simplify(1.0 * o_width);
1169                         }    */
1170             // methode par makeoffset
1172             if (expand)
1173             {
1174                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1175             }
1176             else
1177             {
1178                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1179             }
1180             theRes->ConvertToShape(theShape, fill_positive);
1182             res->Reset();
1183             theRes->ConvertToForme(res);
1185             if (o_width >= 1.0)
1186             {
1187                 res->ConvertEvenLines(1.0);
1188                 res->Simplify(1.0);
1189             }
1190             else
1191             {
1192                 res->ConvertEvenLines(1.0*o_width);
1193                 res->Simplify(1.0 * o_width);
1194             }
1196             delete theShape;
1197             delete theRes;
1198         }
1200         did = true;
1202         sp_curve_unref(curve);
1203         // remember the position of the item
1204         gint pos = SP_OBJECT_REPR(item)->position();
1205         // remember parent
1206         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1207         // remember id
1208         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1210         selection->remove(item);
1211         SP_OBJECT(item)->deleteObject(false);
1213         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1215             gchar tstr[80];
1217             tstr[79] = '\0';
1219             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1221             repr->setAttribute("style", style);
1223             gchar *str = res->svg_dump_path();
1224             repr->setAttribute("d", str);
1225             g_free(str);
1227             // add the new repr to the parent
1228             parent->appendChild(repr);
1230             // move to the saved position
1231             repr->setPosition(pos > 0 ? pos : 0);
1233             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1235             // reapply the transform
1236             sp_item_write_transform(newitem, repr, transform);
1238             repr->setAttribute("id", id);
1240             selection->add(repr);
1242             Inkscape::GC::release(repr);
1243         }
1245         delete orig;
1246         delete res;
1247     }
1249     if (did) {
1250         sp_document_done(sp_desktop_document(desktop));
1251     } else {
1252         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1253         return;
1254     }
1259 //return true if we changed something, else false
1260 bool
1261 sp_selected_path_simplify_item(SPDesktop *desktop, Inkscape::Selection *selection, SPItem *item,
1262                  float threshold,  bool justCoalesce,
1263                  float angleLimit, bool breakableAngles,
1264                  gdouble size,     bool modifySelection)
1266     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1267         return false;
1269     //If this is a group, do the children instead
1270     if (SP_IS_GROUP(item)) {
1272         bool didSomething = false;
1274         for ( GSList *children = sp_item_group_item_list(SP_GROUP(item));
1275                  children  ; children = children->next) {
1277             SPItem *child = (SPItem *) children->data;
1278             didSomething |= sp_selected_path_simplify_item(desktop, selection, child, threshold, justCoalesce,
1279                    angleLimit, breakableAngles, size, false);
1280         }
1282         return didSomething;
1283     }
1286     SPCurve *curve = NULL;
1288     if (SP_IS_SHAPE(item)) {
1289         curve = sp_shape_get_curve(SP_SHAPE(item));
1290         if (!curve)
1291             return false;
1292     }
1294     if (SP_IS_TEXT(item)) {
1295         curve = SP_TEXT(item)->getNormalizedBpath();
1296         if (!curve)
1297             return false;
1298     }
1300     // save the transform, to re-apply it after simplification
1301     NR::Matrix const transform(item->transform);
1303     /*
1304        reset the transform, effectively transforming the item by transform.inverse();
1305        this is necessary so that the item is transformed twice back and forth,
1306        allowing all compensations to cancel out regardless of the preferences
1307     */
1308     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1310     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1312     Path *orig = Path_for_item(item, false);
1313     if (orig == NULL) {
1314         g_free(style);
1315         sp_curve_unref(curve);
1316         return false;
1317     }
1319     sp_curve_unref(curve);
1320     // remember the position of the item
1321     gint pos = SP_OBJECT_REPR(item)->position();
1322     // remember parent
1323     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1324     // remember id
1325     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1327     //If a group was selected, to not change the selection list
1328     if (modifySelection)
1329         selection->remove(item);
1331     SP_OBJECT(item)->deleteObject(false);
1333     if ( justCoalesce ) {
1334         orig->Coalesce(threshold * size);
1335     } else {
1336         orig->ConvertEvenLines(threshold * size);
1337         orig->Simplify(threshold * size);
1338     }
1340     Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1342     repr->setAttribute("style", style);
1344     gchar *str = orig->svg_dump_path();
1345     repr->setAttribute("d", str);
1346     g_free(str);
1348     // restore id
1349     repr->setAttribute("id", id);
1351     // add the new repr to the parent
1352     parent->appendChild(repr);
1354     // move to the saved position
1355     repr->setPosition(pos > 0 ? pos : 0);
1357     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1359     // reapply the transform
1360     sp_item_write_transform(newitem, repr, transform);
1362     //If we are not in a selected group
1363     if (modifySelection)
1364         selection->add(repr);
1366     Inkscape::GC::release(repr);
1368     // clean up
1369     if (orig) delete orig;
1371     return true;
1375 void
1376 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1377                        float angleLimit, bool breakableAngles)
1379     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1381     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1383     if (selection->isEmpty()) {
1384         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1385                          _("Select <b>path(s)</b> to simplify."));
1386         return;
1387     }
1389     // remember selection size
1390     NR::Rect bbox = selection->bounds();
1391     gdouble size  = L2(bbox.dimensions());
1393     bool didSomething = false;
1395     //Loop through all of the items in the selection
1396     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1397                         items != NULL; items = items->next) {
1399         SPItem *item = (SPItem *) items->data;
1401         if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1402             continue;
1404         didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1405                            threshold, justCoalesce, angleLimit, breakableAngles, size, true);
1406     }
1409     if (didSomething)
1410         sp_document_done(sp_desktop_document(desktop));
1411     else
1412         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1417 // globals for keeping track of accelerated simplify
1418 static double previousTime      = 0.0;
1419 static gdouble simplifyMultiply = 1.0;
1421 void
1422 sp_selected_path_simplify(void)
1424     gdouble simplifyThreshold =
1425         prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1426     bool simplifyJustCoalesce =
1427         (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1429     //Get the current time
1430     GTimeVal currentTimeVal;
1431     g_get_current_time(&currentTimeVal);
1432     double currentTime = currentTimeVal.tv_sec * 1000000 +
1433                 currentTimeVal.tv_usec;
1435     //Was the previous call to this function recent? (<0.5 sec)
1436     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1438         // add to the threshold 1/2 of its original value
1439         simplifyMultiply  += 0.5;
1440         simplifyThreshold *= simplifyMultiply;
1442     } else {
1443         // reset to the default
1444         simplifyMultiply = 1;
1445     }
1447     //remember time for next call
1448     previousTime = currentTime;
1450     //g_print("%g\n", simplify_threshold);
1452     //Make the actual call
1453     sp_selected_path_simplify_selection(simplifyThreshold,
1454                       simplifyJustCoalesce, 0.0, false);
1459 // fonctions utilitaires
1461 bool
1462 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1464     if (who == NULL || a == NULL)
1465         return false;
1466     if (who == a)
1467         return true;
1468     return Ancetre(sp_repr_parent(a), who);
1471 Path *
1472 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1474     SPCurve *curve;
1476     if (!item)
1477         return NULL;
1479     if (SP_IS_SHAPE(item))
1480     {
1481         curve = sp_shape_get_curve(SP_SHAPE(item));
1482     }
1483     else if (SP_IS_TEXT(item))
1484     {
1485         curve = SP_TEXT(item)->getNormalizedBpath();
1486     }
1487     else
1488     {
1489         curve = NULL;
1490     }
1492     if (!curve)
1493         return NULL;
1494     NArtBpath *bpath = SP_CURVE_BPATH(curve);
1495     if (bpath == NULL)
1496         return NULL;
1498     if ( doTransformation ) {
1499         if (transformFull)
1500             bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), sp_item_i2doc_affine(item));
1501         else
1502             bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), item->transform);
1503         sp_curve_unref(curve);
1504         curve=NULL;
1505     } else {
1506         bpath=SP_CURVE_BPATH(curve);
1507     }
1509     Path *dest = new Path;
1510     dest->SetBackData(false);
1511     {
1512         int   i;
1513         bool  closed = false;
1514         float lastX  = 0.0;
1515         float lastY  = 0.0;
1517         for (i = 0; bpath[i].code != NR_END; i++) {
1518             switch (bpath[i].code) {
1519                 case NR_LINETO:
1520                     lastX = bpath[i].x3;
1521                     lastY = bpath[i].y3;
1522                     {
1523                         NR::Point tmp(lastX, lastY);
1524                         dest->LineTo(tmp);
1525                     }
1526                     break;
1528                 case NR_CURVETO:
1529                 {
1530                     NR::Point tmp, tms, tme;
1531                     tmp[0]=bpath[i].x3;
1532                     tmp[1]=bpath[i].y3;
1533                     tms[0]=3 * (bpath[i].x1 - lastX);
1534                     tms[1]=3 * (bpath[i].y1 - lastY);
1535                     tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1536                     tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1537                     dest->CubicTo(tmp,tms,tme);
1538                 }
1539                 lastX = bpath[i].x3;
1540                 lastY = bpath[i].y3;
1541                 break;
1543                 case NR_MOVETO_OPEN:
1544                 case NR_MOVETO:
1545                     if (closed)
1546                         dest->Close();
1547                     closed = (bpath[i].code == NR_MOVETO);
1548                     lastX = bpath[i].x3;
1549                     lastY = bpath[i].y3;
1550                     {
1551                         NR::Point  tmp(lastX, lastY);
1552                         dest->MoveTo(tmp);
1553                     }
1554                     break;
1555                 default:
1556                     break;
1557             }
1558         }
1559         if (closed)
1560             dest->Close();
1561     }
1563     if ( doTransformation ) {
1564         if ( bpath ) nr_free(bpath);
1565     } else {
1566         sp_curve_unref(curve);
1567     }
1568     return dest;
1571 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1573     //get nearest position on path
1574     Path::cut_position pos = path->PointToCurvilignPosition(p);
1575     return pos;
1578 NR::Point get_point_on_Path(Path *path, int piece, double t)
1580     NR::Point p;
1581     path->PointAt(piece, t, p);
1582     return p;
1586 /*
1587   Local Variables:
1588   mode:c++
1589   c-file-style:"stroustrup"
1590   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1591   indent-tabs-mode:nil
1592   fill-column:99
1593   End:
1594 */
1595 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :