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 <glib/gmem.h>
22 #include "xml/repr.h"
23 #include "svg/svg.h"
24 #include "sp-path.h"
25 #include "sp-shape.h"
26 #include "sp-marker.h"
27 #include "enums.h"
28 #include "sp-text.h"
29 #include "sp-item-group.h"
30 #include "style.h"
31 #include "inkscape.h"
32 #include "document.h"
33 #include "message-stack.h"
34 #include "selection.h"
35 #include "desktop-handles.h"
36 #include "desktop.h"
37 #include "display/canvas-bpath.h"
38 #include "display/curve.h"
39 #include <glibmm/i18n.h>
40 #include "prefs-utils.h"
42 #include "libnr/n-art-bpath.h"
43 #include "libnr/nr-path.h"
44 #include "xml/repr.h"
45 #include "xml/repr-sorting.h"
47 #include <libnr/nr-matrix-fns.h>
48 #include <libnr/nr-matrix-ops.h>
49 #include <libnr/nr-matrix-translate-ops.h>
50 #include <libnr/nr-scale-matrix-ops.h>
52 #include "livarot/Path.h"
53 #include "livarot/Shape.h"
55 #include "splivarot.h"
57 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
59 void sp_selected_path_boolop(bool_op bop);
60 void sp_selected_path_do_offset(bool expand, double prefOffset);
61 void sp_selected_path_create_offset_object(int expand, bool updating);
63 void
64 sp_selected_path_union()
65 {
66 sp_selected_path_boolop(bool_op_union);
67 }
69 void
70 sp_selected_path_intersect()
71 {
72 sp_selected_path_boolop(bool_op_inters);
73 }
75 void
76 sp_selected_path_diff()
77 {
78 sp_selected_path_boolop(bool_op_diff);
79 }
81 void
82 sp_selected_path_symdiff()
83 {
84 sp_selected_path_boolop(bool_op_symdiff);
85 }
86 void
87 sp_selected_path_cut()
88 {
89 sp_selected_path_boolop(bool_op_cut);
90 }
91 void
92 sp_selected_path_slice()
93 {
94 sp_selected_path_boolop(bool_op_slice);
95 }
98 // boolean operations
99 // take the source paths from the file, do the operation, delete the originals and add the results
100 void
101 sp_selected_path_boolop(bool_op bop)
102 {
103 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
105 Inkscape::Selection *selection = sp_desktop_selection(desktop);
107 GSList *il = (GSList *) selection->itemList();
109 if (g_slist_length(il) < 2) {
110 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
111 return;
112 }
114 if (g_slist_length(il) > 2) {
115 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
116 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
117 return;
118 }
119 }
121 // reverseOrderForOp marks whether the order of the list is the top->down order
122 // it's only used when there are 2 objects, and for operations who need to know the
123 // topmost object (differences, cuts)
124 bool reverseOrderForOp = false;
126 // mettre les elements de la liste dans l'ordre pour ces operations
127 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
128 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
129 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
130 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
132 if (a == NULL || b == NULL) {
133 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."));
134 return;
135 }
137 if (Ancetre(a, b)) {
138 // a is the parent of b, already in the proper order
139 } else if (Ancetre(b, a)) {
140 // reverse order
141 reverseOrderForOp = true;
142 } else {
144 // objects are not in parent/child relationship;
145 // find their lowest common ancestor
146 Inkscape::XML::Node *dad = LCA(a, b);
147 if (dad == NULL) {
148 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."));
149 return;
150 }
152 // find the children of the LCA that lead from it to the a and b
153 Inkscape::XML::Node *as = AncetreFils(a, dad);
154 Inkscape::XML::Node *bs = AncetreFils(b, dad);
156 // find out which comes first
157 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
158 if (child == as) {
159 /* a first, so reverse. */
160 reverseOrderForOp = true;
161 break;
162 }
163 if (child == bs)
164 break;
165 }
166 }
167 }
169 il = g_slist_copy(il);
171 // first check if all the input objects have shapes
172 // otherwise bail out
173 for (GSList *l = il; l != NULL; l = l->next)
174 {
175 SPItem *item = SP_ITEM(l->data);
176 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
177 {
178 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
179 g_slist_free(il);
180 return;
181 }
182 }
184 // extract the livarot Paths from the source objects
185 // also get the winding rule specified in the style
186 int nbOriginaux = g_slist_length(il);
187 std::vector<Path *> originaux(nbOriginaux);
188 std::vector<FillRule> origWind(nbOriginaux);
189 int curOrig;
190 {
191 curOrig = 0;
192 for (GSList *l = il; l != NULL; l = l->next)
193 {
194 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
195 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
196 if (val && strcmp(val, "nonzero") == 0) {
197 origWind[curOrig]= fill_nonZero;
198 } else if (val && strcmp(val, "evenodd") == 0) {
199 origWind[curOrig]= fill_oddEven;
200 } else {
201 origWind[curOrig]= fill_nonZero;
202 }
204 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
205 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
206 {
207 for (int i = curOrig; i >= 0; i--) delete originaux[i];
208 g_slist_free(il);
209 return;
210 }
211 curOrig++;
212 }
213 }
214 // reverse if needed
215 // note that the selection list keeps its order
216 if ( reverseOrderForOp ) {
217 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
218 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
219 }
221 // and work
222 // some temporary instances, first
223 Shape *theShapeA = new Shape;
224 Shape *theShapeB = new Shape;
225 Shape *theShape = new Shape;
226 Path *res = new Path;
227 res->SetBackData(false);
228 Path::cut_position *toCut=NULL;
229 int nbToCut=0;
231 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
232 // true boolean op
233 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
234 originaux[0]->ConvertWithBackData(0.1);
236 originaux[0]->Fill(theShape, 0);
238 theShapeA->ConvertToShape(theShape, origWind[0]);
240 curOrig = 1;
241 for (GSList *l = il->next; l != NULL; l = l->next) {
242 originaux[curOrig]->ConvertWithBackData(0.1);
244 originaux[curOrig]->Fill(theShape, curOrig);
246 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
248 // les elements arrivent en ordre inverse dans la liste
249 theShape->Booleen(theShapeB, theShapeA, bop);
251 {
252 Shape *swap = theShape;
253 theShape = theShapeA;
254 theShapeA = swap;
255 }
256 curOrig++;
257 }
259 {
260 Shape *swap = theShape;
261 theShape = theShapeA;
262 theShapeA = swap;
263 }
265 } else if ( bop == bool_op_cut ) {
266 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
267 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
268 // it is just uncrossed, and cleaned from duplicate edges and points
269 // then it's fed to Booleen() which will uncross it against the other path
270 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
271 // thus making a polygon. the weight of the edges of the cut are all 0, but
272 // the Booleen need to invert the ones inside the source polygon (for the subsequent
273 // ConvertToForme)
275 // the cut path needs to have the highest pathID in the back data
276 // that's how the Booleen() function knows it's an edge of the cut
278 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
279 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
280 // left it at 1.0. Investigate replacing this by a combination of difference and
281 // intersection of the same two paths. -- bb
282 {
283 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
284 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
285 }
286 originaux[0]->ConvertWithBackData(1.0);
288 originaux[0]->Fill(theShape, 0);
290 theShapeA->ConvertToShape(theShape, origWind[0]);
292 originaux[1]->ConvertWithBackData(1.0);
294 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
296 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
298 // les elements arrivent en ordre inverse dans la liste
299 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
301 } else if ( bop == bool_op_slice ) {
302 // slice is not really a boolean operation
303 // you just put the 2 shapes in a single polygon, uncross it
304 // the points where the degree is > 2 are intersections
305 // just check it's an intersection on the path you want to cut, and keep it
306 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
307 // make new subpath at each one of these positions
308 // inversion pour l'op\8eration
309 {
310 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
311 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
312 }
313 originaux[0]->ConvertWithBackData(1.0);
315 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
317 originaux[1]->ConvertWithBackData(1.0);
319 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
321 theShape->ConvertToShape(theShapeA, fill_justDont);
323 if ( theShape->hasBackData() ) {
324 // should always be the case, but ya never know
325 {
326 for (int i = 0; i < theShape->numberOfPoints(); i++) {
327 if ( theShape->getPoint(i).totalDegree() > 2 ) {
328 // possibly an intersection
329 // we need to check that at least one edge from the source path is incident to it
330 // before we declare it's an intersection
331 int cb = theShape->getPoint(i).incidentEdge[FIRST];
332 int nbOrig=0;
333 int nbOther=0;
334 int piece=-1;
335 float t=0.0;
336 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
337 if ( theShape->ebData[cb].pathID == 0 ) {
338 // the source has an edge incident to the point, get its position on the path
339 piece=theShape->ebData[cb].pieceID;
340 if ( theShape->getEdge(cb).st == i ) {
341 t=theShape->ebData[cb].tSt;
342 } else {
343 t=theShape->ebData[cb].tEn;
344 }
345 nbOrig++;
346 }
347 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
348 cb=theShape->NextAt(i, cb);
349 }
350 if ( nbOrig > 0 && nbOther > 0 ) {
351 // point incident to both path and cut: an intersection
352 // note that you only keep one position on the source; you could have degenerate
353 // cases where the source crosses itself at this point, and you wouyld miss an intersection
354 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
355 toCut[nbToCut].piece=piece;
356 toCut[nbToCut].t=t;
357 nbToCut++;
358 }
359 }
360 }
361 }
362 {
363 // i think it's useless now
364 int i = theShape->numberOfEdges() - 1;
365 for (;i>=0;i--) {
366 if ( theShape->ebData[i].pathID == 1 ) {
367 theShape->SubEdge(i);
368 }
369 }
370 }
372 }
373 }
375 int* nesting=NULL;
376 int* conts=NULL;
377 int nbNest=0;
378 // pour compenser le swap juste avant
379 if ( bop == bool_op_slice ) {
380 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
381 // res->ConvertForcedToMoveTo();
382 res->Copy(originaux[0]);
383 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
384 free(toCut);
385 } else if ( bop == bool_op_cut ) {
386 // il faut appeler pour desallouer PointData (pas vital, mais bon)
387 // the Booleen() function did not deallocated the point_data array in theShape, because this
388 // function needs it.
389 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
390 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
391 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
392 } else {
393 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
394 }
396 delete theShape;
397 delete theShapeA;
398 delete theShapeB;
399 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
401 if (res->descr_cmd.size() <= 1)
402 {
403 // only one command, presumably a moveto: it isn't a path
404 for (GSList *l = il; l != NULL; l = l->next)
405 {
406 SP_OBJECT(l->data)->deleteObject();
407 }
408 sp_document_done(sp_desktop_document(desktop));
409 selection->clear();
411 delete res;
412 g_slist_free(il);
413 return;
414 }
416 // remember important aspects of the source path, to be restored
417 Inkscape::XML::Node *repr_source;
418 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
419 if (reverseOrderForOp) {
420 repr_source = SP_OBJECT_REPR(il->data);
421 } else {
422 repr_source = SP_OBJECT_REPR(il->next->data);
423 }
424 } else {
425 // find out the bottom object
426 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
428 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
429 repr_source = ((Inkscape::XML::Node *) sorted->data);
430 g_slist_free(sorted);
431 }
432 gint pos = repr_source->position();
433 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
434 char const *id = repr_source->attribute("id");
435 char const *style = repr_source->attribute("style");
438 // remove source paths
439 selection->clear();
440 for (GSList *l = il; l != NULL; l = l->next) {
441 // if this is the bottommost object,
442 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
443 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
444 SP_OBJECT(l->data)->deleteObject(false);
445 } else {
446 // delete the object for real, so that its clones can take appropriate action
447 SP_OBJECT(l->data)->deleteObject();
448 }
449 }
450 g_slist_free(il);
452 // premultiply by the inverse of parent's repr
453 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
454 NR::Matrix local = sp_item_i2doc_affine(parent_item);
455 gchar affinestr[80];
456 gchar *transform = NULL;
457 if (!local.test_identity() && sp_svg_transform_write(affinestr, 79, local.inverse())) {
458 transform = affinestr;
459 }
461 // now that we have the result, add it on the canvas
462 if ( bop == bool_op_cut || bop == bool_op_slice ) {
463 int nbRP=0;
464 Path** resPath;
465 if ( bop == bool_op_slice ) {
466 // there are moveto's at each intersection, but it's still one unique path
467 // so break it down and add each subpath independently
468 // we could call break_apart to do this, but while we have the description...
469 resPath=res->SubPaths(nbRP, false);
470 } else {
471 // cut operation is a bit wicked: you need to keep holes
472 // that's why you needed the nesting
473 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
474 // to get the path for each part of the polygon. that's why you need the nesting info:
475 // to know in wich subpath to add a subpath
476 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
478 // cleaning
479 if ( conts ) free(conts);
480 if ( nesting ) free(nesting);
481 }
483 // add all the pieces resulting from cut or slice
484 for (int i=0;i<nbRP;i++) {
485 gchar *d = resPath[i]->svg_dump_path();
487 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
488 repr->setAttribute("style", style);
489 repr->setAttribute("d", d);
490 g_free(d);
492 // for slice, remove fill
493 if (bop == bool_op_slice) {
494 SPCSSAttr *css;
496 css = sp_repr_css_attr_new();
497 sp_repr_css_set_property(css, "fill", "none");
499 sp_repr_css_change(repr, css, "style");
501 sp_repr_css_attr_unref(css);
502 }
504 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
505 // this means it's basically random which of the pieces inherits the original's id and clones
506 // a better algorithm might figure out e.g. the biggest piece
507 repr->setAttribute("id", id);
509 repr->setAttribute("transform", transform);
511 // add the new repr to the parent
512 parent->appendChild(repr);
514 // move to the saved position
515 repr->setPosition(pos > 0 ? pos : 0);
517 selection->add(repr);
518 Inkscape::GC::release(repr);
520 delete resPath[i];
521 }
522 if ( resPath ) free(resPath);
524 } else {
525 gchar *d = res->svg_dump_path();
527 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
528 repr->setAttribute("style", style);
530 repr->setAttribute("d", d);
531 g_free(d);
533 repr->setAttribute("transform", transform);
535 repr->setAttribute("id", id);
536 parent->appendChild(repr);
537 repr->setPosition(pos > 0 ? pos : 0);
539 selection->add(repr);
540 Inkscape::GC::release(repr);
541 }
543 sp_document_done(sp_desktop_document(desktop));
545 delete res;
546 }
549 void
550 sp_selected_path_outline()
551 {
552 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
554 Inkscape::Selection *selection = sp_desktop_selection(desktop);
556 if (selection->isEmpty()) {
557 // TRANSLATORS: "to outline" means "to convert stroke to path"
558 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to outline."));
559 return;
560 }
562 bool did = false;
564 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
565 items != NULL;
566 items = items->next) {
568 SPItem *item = (SPItem *) items->data;
570 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
571 continue;
573 SPCurve *curve = NULL;
574 if (SP_IS_SHAPE(item)) {
575 curve = sp_shape_get_curve(SP_SHAPE(item));
576 if (curve == NULL)
577 continue;
578 }
579 if (SP_IS_TEXT(item)) {
580 curve = SP_TEXT(item)->getNormalizedBpath();
581 if (curve == NULL)
582 continue;
583 }
585 { // pas de stroke pas de chocolat
586 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
587 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
589 if (val == NULL || strcmp(val, "none") == 0) {
590 sp_curve_unref(curve);
591 continue;
592 }
593 }
595 // remember old stroke style, to be set on fill
596 SPCSSAttr *ncss;
597 {
598 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
599 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
600 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
602 ncss = sp_repr_css_attr_new();
604 sp_repr_css_set_property(ncss, "stroke", "none");
605 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
606 sp_repr_css_set_property(ncss, "fill", val);
607 if ( opac ) {
608 sp_repr_css_set_property(ncss, "fill-opacity", opac);
609 } else {
610 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
611 }
612 sp_repr_css_unset_property(ncss, "marker-start");
613 sp_repr_css_unset_property(ncss, "marker-mid");
614 sp_repr_css_unset_property(ncss, "marker-end");
615 }
617 NR::Matrix const transform(item->transform);
618 float const scale = transform.expansion();
619 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
620 SPStyle *i_style = SP_OBJECT(item)->style;
622 float o_width, o_miter;
623 JoinType o_join;
624 ButtType o_butt;
626 {
627 int jointype, captype;
629 jointype = i_style->stroke_linejoin.computed;
630 captype = i_style->stroke_linecap.computed;
631 o_width = i_style->stroke_width.computed;
633 switch (jointype) {
634 case SP_STROKE_LINEJOIN_MITER:
635 o_join = join_pointy;
636 break;
637 case SP_STROKE_LINEJOIN_ROUND:
638 o_join = join_round;
639 break;
640 default:
641 o_join = join_straight;
642 break;
643 }
645 switch (captype) {
646 case SP_STROKE_LINECAP_SQUARE:
647 o_butt = butt_square;
648 break;
649 case SP_STROKE_LINECAP_ROUND:
650 o_butt = butt_round;
651 break;
652 default:
653 o_butt = butt_straight;
654 break;
655 }
657 if (o_width < 0.1)
658 o_width = 0.1;
659 o_miter = i_style->stroke_miterlimit.value * o_width;
660 }
662 Path *orig = Path_for_item(item, false);
663 if (orig == NULL) {
664 g_free(style);
665 sp_curve_unref(curve);
666 continue;
667 }
669 Path *res = new Path;
670 res->SetBackData(false);
672 if (i_style->stroke_dash.n_dash) {
673 // For dashed strokes, use Stroke method, because Outline can't do dashes
674 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
676 orig->ConvertWithBackData(0.1);
678 orig->DashPolylineFromStyle(i_style, scale, 0);
680 Shape* theShape = new Shape;
681 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
682 0.5 * o_miter);
683 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
685 Shape *theRes = new Shape;
687 theRes->ConvertToShape(theShape, fill_positive);
689 Path *originaux[1];
690 originaux[0] = res;
691 theRes->ConvertToForme(orig, 1, originaux);
693 res->Coalesce(5.0);
695 delete theShape;
696 delete theRes;
698 } else {
700 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
702 orig->Coalesce(0.5 * o_width);
704 Shape *theShape = new Shape;
705 Shape *theRes = new Shape;
707 res->ConvertWithBackData(1.0);
708 res->Fill(theShape, 0);
709 theRes->ConvertToShape(theShape, fill_positive);
711 Path *originaux[1];
712 originaux[0] = res;
713 theRes->ConvertToForme(orig, 1, originaux);
715 delete theShape;
716 delete theRes;
717 }
719 if (orig->descr_cmd.size() <= 1) {
720 // ca a merd\8e, ou bien le resultat est vide
721 delete res;
722 delete orig;
723 g_free(style);
724 continue;
725 }
727 did = true;
729 // remember the position of the item
730 gint pos = SP_OBJECT_REPR(item)->position();
731 // remember parent
732 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
733 // remember id
734 char const *id = SP_OBJECT_REPR(item)->attribute("id");
736 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
738 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
740 // restore old style
741 repr->setAttribute("style", style);
743 // set old stroke style on fill
744 sp_repr_css_change(repr, ncss, "style");
746 sp_repr_css_attr_unref(ncss);
748 gchar *str = orig->svg_dump_path();
749 repr->setAttribute("d", str);
750 g_free(str);
753 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
755 Inkscape::XML::Node *g_repr = sp_repr_new("svg:g");
757 // add the group to the parent
758 parent->appendChild(g_repr);
759 // move to the saved position
760 g_repr->setPosition(pos > 0 ? pos : 0);
762 g_repr->appendChild(repr);
763 repr->setAttribute("id", id);
764 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
765 sp_item_write_transform(newitem, repr, transform);
767 SPShape *shape = SP_SHAPE(item);
769 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
770 for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
771 if (sp_shape_marker_required (shape, m, bp)) {
773 SPMarker* marker = SP_MARKER (shape->marker[m]);
774 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
776 NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
778 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
779 tr = NR::scale(i_style->stroke_width.computed) * tr;
780 }
782 // total marker transform
783 tr = marker_item->transform * marker->c2p * tr * transform;
785 if (SP_OBJECT_REPR(marker_item)) {
786 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate();
787 g_repr->appendChild(m_repr);
788 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
789 sp_item_write_transform(marker_item, m_repr, tr);
790 }
791 }
792 }
793 }
796 selection->add(g_repr);
798 Inkscape::GC::release(g_repr);
801 } else {
803 // add the new repr to the parent
804 parent->appendChild(repr);
806 // move to the saved position
807 repr->setPosition(pos > 0 ? pos : 0);
809 repr->setAttribute("id", id);
811 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
812 sp_item_write_transform(newitem, repr, transform);
814 selection->add(repr);
816 }
818 Inkscape::GC::release(repr);
820 sp_curve_unref(curve);
821 selection->remove(item);
822 SP_OBJECT(item)->deleteObject(false);
824 }
826 delete res;
827 delete orig;
828 g_free(style);
830 }
832 if (did) {
833 sp_document_done(sp_desktop_document(desktop));
834 } else {
835 // TRANSLATORS: "to outline" means "to convert stroke to path"
836 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> to outline in the selection."));
837 return;
838 }
839 }
842 void
843 sp_selected_path_offset()
844 {
845 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
847 sp_selected_path_do_offset(true, prefOffset);
848 }
849 void
850 sp_selected_path_inset()
851 {
852 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
854 sp_selected_path_do_offset(false, prefOffset);
855 }
857 void
858 sp_selected_path_offset_screen(double pixels)
859 {
860 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
861 }
863 void
864 sp_selected_path_inset_screen(double pixels)
865 {
866 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
867 }
870 void sp_selected_path_create_offset_object_zero()
871 {
872 sp_selected_path_create_offset_object(0, false);
873 }
875 void sp_selected_path_create_offset()
876 {
877 sp_selected_path_create_offset_object(1, false);
878 }
879 void sp_selected_path_create_inset()
880 {
881 sp_selected_path_create_offset_object(-1, false);
882 }
884 void sp_selected_path_create_updating_offset_object_zero()
885 {
886 sp_selected_path_create_offset_object(0, true);
887 }
889 void sp_selected_path_create_updating_offset()
890 {
891 sp_selected_path_create_offset_object(1, true);
892 }
893 void sp_selected_path_create_updating_inset()
894 {
895 sp_selected_path_create_offset_object(-1, true);
896 }
898 void
899 sp_selected_path_create_offset_object(int expand, bool updating)
900 {
901 Inkscape::Selection *selection;
902 Inkscape::XML::Node *repr;
903 SPItem *item;
904 SPCurve *curve;
905 gchar *style, *str;
906 SPDesktop *desktop;
907 float o_width, o_miter;
908 JoinType o_join;
909 ButtType o_butt;
911 curve = NULL;
913 desktop = SP_ACTIVE_DESKTOP;
915 selection = sp_desktop_selection(desktop);
917 item = selection->singleItem();
919 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
920 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
921 return;
922 }
923 if (SP_IS_SHAPE(item))
924 {
925 curve = sp_shape_get_curve(SP_SHAPE(item));
926 if (curve == NULL)
927 return;
928 }
929 if (SP_IS_TEXT(item))
930 {
931 curve = SP_TEXT(item)->getNormalizedBpath();
932 if (curve == NULL)
933 return;
934 }
936 NR::Matrix const transform(item->transform);
938 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
940 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
942 // remember the position of the item
943 gint pos = SP_OBJECT_REPR(item)->position();
944 // remember parent
945 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
947 {
948 SPStyle *i_style = SP_OBJECT(item)->style;
949 int jointype, captype;
951 jointype = i_style->stroke_linejoin.value;
952 captype = i_style->stroke_linecap.value;
953 o_width = i_style->stroke_width.computed;
954 if (jointype == SP_STROKE_LINEJOIN_MITER)
955 {
956 o_join = join_pointy;
957 }
958 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
959 {
960 o_join = join_round;
961 }
962 else
963 {
964 o_join = join_straight;
965 }
966 if (captype == SP_STROKE_LINECAP_SQUARE)
967 {
968 o_butt = butt_square;
969 }
970 else if (captype == SP_STROKE_LINECAP_ROUND)
971 {
972 o_butt = butt_round;
973 }
974 else
975 {
976 o_butt = butt_straight;
977 }
979 {
980 double prefOffset = 1.0;
981 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
982 o_width = prefOffset;
983 }
985 if (o_width < 0.01)
986 o_width = 0.01;
987 o_miter = i_style->stroke_miterlimit.value * o_width;
988 }
990 Path *orig = Path_for_item(item, true, false);
991 if (orig == NULL)
992 {
993 g_free(style);
994 sp_curve_unref(curve);
995 return;
996 }
998 Path *res = new Path;
999 res->SetBackData(false);
1001 {
1002 Shape *theShape = new Shape;
1003 Shape *theRes = new Shape;
1005 orig->ConvertWithBackData(1.0);
1006 orig->Fill(theShape, 0);
1008 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1009 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1010 if (val && strcmp(val, "nonzero") == 0)
1011 {
1012 theRes->ConvertToShape(theShape, fill_nonZero);
1013 }
1014 else if (val && strcmp(val, "evenodd") == 0)
1015 {
1016 theRes->ConvertToShape(theShape, fill_oddEven);
1017 }
1018 else
1019 {
1020 theRes->ConvertToShape(theShape, fill_nonZero);
1021 }
1023 Path *originaux[1];
1024 originaux[0] = orig;
1025 theRes->ConvertToForme(res, 1, originaux);
1027 delete theShape;
1028 delete theRes;
1029 }
1031 sp_curve_unref(curve);
1033 if (res->descr_cmd.size() <= 1)
1034 {
1035 // pas vraiment de points sur le resultat
1036 // donc il ne reste rien
1037 sp_document_done(sp_desktop_document(desktop));
1038 selection->clear();
1040 delete res;
1041 delete orig;
1042 g_free(style);
1043 return;
1044 }
1046 {
1047 gchar tstr[80];
1049 tstr[79] = '\0';
1051 repr = sp_repr_new("svg:path");
1052 repr->setAttribute("sodipodi:type", "inkscape:offset");
1053 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1054 ? o_width
1055 : expand < 0
1056 ? -o_width
1057 : 0 ));
1059 str = res->svg_dump_path();
1060 repr->setAttribute("inkscape:original", str);
1061 g_free(str);
1063 if ( updating ) {
1064 char const *id = SP_OBJECT(item)->repr->attribute("id");
1065 char const *uri = g_strdup_printf("#%s", id);
1066 repr->setAttribute("xlink:href", uri);
1067 g_free((void *) uri);
1068 } else {
1069 repr->setAttribute("inkscape:href", NULL);
1070 }
1072 repr->setAttribute("style", style);
1074 // add the new repr to the parent
1075 parent->appendChild(repr);
1077 // move to the saved position
1078 repr->setPosition(pos > 0 ? pos : 0);
1080 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1082 if ( updating ) {
1083 // on conserve l'original
1084 // we reapply the transform to the original (offset will feel it)
1085 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1086 } else {
1087 // delete original, apply the transform to the offset
1088 SP_OBJECT(item)->deleteObject(false);
1089 sp_item_write_transform(nitem, repr, transform);
1090 }
1092 // The object just created from a temporary repr is only a seed.
1093 // We need to invoke its write which will update its real repr (in particular adding d=)
1094 SP_OBJECT(nitem)->updateRepr();
1096 Inkscape::GC::release(repr);
1098 selection->set(nitem);
1099 }
1101 sp_document_done(sp_desktop_document(desktop));
1103 delete res;
1104 delete orig;
1106 g_free(style);
1107 }
1120 void
1121 sp_selected_path_do_offset(bool expand, double prefOffset)
1122 {
1123 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1125 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1127 if (selection->isEmpty()) {
1128 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1129 return;
1130 }
1132 bool did = false;
1134 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1135 items != NULL;
1136 items = items->next) {
1138 SPItem *item = (SPItem *) items->data;
1140 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1141 continue;
1143 SPCurve *curve = NULL;
1144 if (SP_IS_SHAPE(item)) {
1145 curve = sp_shape_get_curve(SP_SHAPE(item));
1146 if (curve == NULL)
1147 continue;
1148 }
1149 if (SP_IS_TEXT(item)) {
1150 curve = SP_TEXT(item)->getNormalizedBpath();
1151 if (curve == NULL)
1152 continue;
1153 }
1155 NR::Matrix const transform(item->transform);
1157 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1159 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1161 float o_width, o_miter;
1162 JoinType o_join;
1163 ButtType o_butt;
1165 {
1166 SPStyle *i_style = SP_OBJECT(item)->style;
1167 int jointype, captype;
1169 jointype = i_style->stroke_linejoin.value;
1170 captype = i_style->stroke_linecap.value;
1171 o_width = i_style->stroke_width.computed;
1173 switch (jointype) {
1174 case SP_STROKE_LINEJOIN_MITER:
1175 o_join = join_pointy;
1176 break;
1177 case SP_STROKE_LINEJOIN_ROUND:
1178 o_join = join_round;
1179 break;
1180 default:
1181 o_join = join_straight;
1182 break;
1183 }
1185 switch (captype) {
1186 case SP_STROKE_LINECAP_SQUARE:
1187 o_butt = butt_square;
1188 break;
1189 case SP_STROKE_LINECAP_ROUND:
1190 o_butt = butt_round;
1191 break;
1192 default:
1193 o_butt = butt_straight;
1194 break;
1195 }
1197 o_width = prefOffset;
1199 if (o_width < 0.1)
1200 o_width = 0.1;
1201 o_miter = i_style->stroke_miterlimit.value * o_width;
1202 }
1204 Path *orig = Path_for_item(item, false);
1205 if (orig == NULL) {
1206 g_free(style);
1207 sp_curve_unref(curve);
1208 continue;
1209 }
1211 Path *res = new Path;
1212 res->SetBackData(false);
1214 {
1215 Shape *theShape = new Shape;
1216 Shape *theRes = new Shape;
1218 orig->ConvertWithBackData(0.03);
1219 orig->Fill(theShape, 0);
1221 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1222 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1223 if (val && strcmp(val, "nonzero") == 0)
1224 {
1225 theRes->ConvertToShape(theShape, fill_nonZero);
1226 }
1227 else if (val && strcmp(val, "evenodd") == 0)
1228 {
1229 theRes->ConvertToShape(theShape, fill_oddEven);
1230 }
1231 else
1232 {
1233 theRes->ConvertToShape(theShape, fill_nonZero);
1234 }
1236 // et maintenant: offset
1237 // methode inexacte
1238 /* Path *originaux[1];
1239 originaux[0] = orig;
1240 theRes->ConvertToForme(res, 1, originaux);
1242 if (expand) {
1243 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1244 } else {
1245 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1246 }
1248 orig->ConvertWithBackData(1.0);
1249 orig->Fill(theShape, 0);
1250 theRes->ConvertToShape(theShape, fill_positive);
1251 originaux[0] = orig;
1252 theRes->ConvertToForme(res, 1, originaux);
1254 if (o_width >= 0.5) {
1255 // res->Coalesce(1.0);
1256 res->ConvertEvenLines(1.0);
1257 res->Simplify(1.0);
1258 } else {
1259 // res->Coalesce(o_width);
1260 res->ConvertEvenLines(1.0*o_width);
1261 res->Simplify(1.0 * o_width);
1262 } */
1263 // methode par makeoffset
1265 if (expand)
1266 {
1267 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1268 }
1269 else
1270 {
1271 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1272 }
1273 theRes->ConvertToShape(theShape, fill_positive);
1275 res->Reset();
1276 theRes->ConvertToForme(res);
1278 if (o_width >= 1.0)
1279 {
1280 res->ConvertEvenLines(1.0);
1281 res->Simplify(1.0);
1282 }
1283 else
1284 {
1285 res->ConvertEvenLines(1.0*o_width);
1286 res->Simplify(1.0 * o_width);
1287 }
1289 delete theShape;
1290 delete theRes;
1291 }
1293 did = true;
1295 sp_curve_unref(curve);
1296 // remember the position of the item
1297 gint pos = SP_OBJECT_REPR(item)->position();
1298 // remember parent
1299 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1300 // remember id
1301 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1303 selection->remove(item);
1304 SP_OBJECT(item)->deleteObject(false);
1306 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1308 gchar tstr[80];
1310 tstr[79] = '\0';
1312 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1314 repr->setAttribute("style", style);
1316 gchar *str = res->svg_dump_path();
1317 repr->setAttribute("d", str);
1318 g_free(str);
1320 // add the new repr to the parent
1321 parent->appendChild(repr);
1323 // move to the saved position
1324 repr->setPosition(pos > 0 ? pos : 0);
1326 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1328 // reapply the transform
1329 sp_item_write_transform(newitem, repr, transform);
1331 repr->setAttribute("id", id);
1333 selection->add(repr);
1335 Inkscape::GC::release(repr);
1336 }
1338 delete orig;
1339 delete res;
1340 }
1342 if (did) {
1343 sp_document_done(sp_desktop_document(desktop));
1344 } else {
1345 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1346 return;
1347 }
1348 }
1352 //return true if we changed something, else false
1353 bool
1354 sp_selected_path_simplify_item(SPDesktop *desktop, Inkscape::Selection *selection, SPItem *item,
1355 float threshold, bool justCoalesce,
1356 float angleLimit, bool breakableAngles,
1357 gdouble size, bool modifySelection)
1358 {
1359 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1360 return false;
1362 //If this is a group, do the children instead
1363 if (SP_IS_GROUP(item)) {
1365 bool didSomething = false;
1367 for ( GSList *children = sp_item_group_item_list(SP_GROUP(item));
1368 children ; children = children->next) {
1370 SPItem *child = (SPItem *) children->data;
1371 didSomething |= sp_selected_path_simplify_item(desktop, selection, child, threshold, justCoalesce,
1372 angleLimit, breakableAngles, size, false);
1373 }
1375 return didSomething;
1376 }
1379 SPCurve *curve = NULL;
1381 if (SP_IS_SHAPE(item)) {
1382 curve = sp_shape_get_curve(SP_SHAPE(item));
1383 if (!curve)
1384 return false;
1385 }
1387 if (SP_IS_TEXT(item)) {
1388 curve = SP_TEXT(item)->getNormalizedBpath();
1389 if (!curve)
1390 return false;
1391 }
1393 // save the transform, to re-apply it after simplification
1394 NR::Matrix const transform(item->transform);
1396 /*
1397 reset the transform, effectively transforming the item by transform.inverse();
1398 this is necessary so that the item is transformed twice back and forth,
1399 allowing all compensations to cancel out regardless of the preferences
1400 */
1401 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1403 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1405 Path *orig = Path_for_item(item, false);
1406 if (orig == NULL) {
1407 g_free(style);
1408 sp_curve_unref(curve);
1409 return false;
1410 }
1412 sp_curve_unref(curve);
1413 // remember the position of the item
1414 gint pos = SP_OBJECT_REPR(item)->position();
1415 // remember parent
1416 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1417 // remember id
1418 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1420 //If a group was selected, to not change the selection list
1421 if (modifySelection)
1422 selection->remove(item);
1424 SP_OBJECT(item)->deleteObject(false);
1426 if ( justCoalesce ) {
1427 orig->Coalesce(threshold * size);
1428 } else {
1429 orig->ConvertEvenLines(threshold * size);
1430 orig->Simplify(threshold * size);
1431 }
1433 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1435 repr->setAttribute("style", style);
1437 gchar *str = orig->svg_dump_path();
1438 repr->setAttribute("d", str);
1439 g_free(str);
1441 // restore id
1442 repr->setAttribute("id", id);
1444 // add the new repr to the parent
1445 parent->appendChild(repr);
1447 // move to the saved position
1448 repr->setPosition(pos > 0 ? pos : 0);
1450 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1452 // reapply the transform
1453 sp_item_write_transform(newitem, repr, transform);
1455 //If we are not in a selected group
1456 if (modifySelection)
1457 selection->add(repr);
1459 Inkscape::GC::release(repr);
1461 // clean up
1462 if (orig) delete orig;
1464 return true;
1465 }
1468 void
1469 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1470 float angleLimit, bool breakableAngles)
1471 {
1472 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1474 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1476 if (selection->isEmpty()) {
1477 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1478 _("Select <b>path(s)</b> to simplify."));
1479 return;
1480 }
1482 // remember selection size
1483 NR::Rect bbox = selection->bounds();
1484 gdouble size = L2(bbox.dimensions());
1486 bool didSomething = false;
1488 //Loop through all of the items in the selection
1489 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1490 items != NULL; items = items->next) {
1492 SPItem *item = (SPItem *) items->data;
1494 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1495 continue;
1497 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1498 threshold, justCoalesce, angleLimit, breakableAngles, size, true);
1499 }
1502 if (didSomething)
1503 sp_document_done(sp_desktop_document(desktop));
1504 else
1505 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1507 }
1510 // globals for keeping track of accelerated simplify
1511 static double previousTime = 0.0;
1512 static gdouble simplifyMultiply = 1.0;
1514 void
1515 sp_selected_path_simplify(void)
1516 {
1517 gdouble simplifyThreshold =
1518 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1519 bool simplifyJustCoalesce =
1520 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1522 //Get the current time
1523 GTimeVal currentTimeVal;
1524 g_get_current_time(¤tTimeVal);
1525 double currentTime = currentTimeVal.tv_sec * 1000000 +
1526 currentTimeVal.tv_usec;
1528 //Was the previous call to this function recent? (<0.5 sec)
1529 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1531 // add to the threshold 1/2 of its original value
1532 simplifyMultiply += 0.5;
1533 simplifyThreshold *= simplifyMultiply;
1535 } else {
1536 // reset to the default
1537 simplifyMultiply = 1;
1538 }
1540 //remember time for next call
1541 previousTime = currentTime;
1543 //g_print("%g\n", simplify_threshold);
1545 //Make the actual call
1546 sp_selected_path_simplify_selection(simplifyThreshold,
1547 simplifyJustCoalesce, 0.0, false);
1548 }
1552 // fonctions utilitaires
1554 bool
1555 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1556 {
1557 if (who == NULL || a == NULL)
1558 return false;
1559 if (who == a)
1560 return true;
1561 return Ancetre(sp_repr_parent(a), who);
1562 }
1564 Path *
1565 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1566 {
1567 SPCurve *curve;
1569 if (!item)
1570 return NULL;
1572 if (SP_IS_SHAPE(item))
1573 {
1574 curve = sp_shape_get_curve(SP_SHAPE(item));
1575 }
1576 else if (SP_IS_TEXT(item))
1577 {
1578 curve = SP_TEXT(item)->getNormalizedBpath();
1579 }
1580 else
1581 {
1582 curve = NULL;
1583 }
1585 if (!curve)
1586 return NULL;
1587 NArtBpath *bpath = SP_CURVE_BPATH(curve);
1588 if (bpath == NULL)
1589 return NULL;
1591 if ( doTransformation ) {
1592 if (transformFull)
1593 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), sp_item_i2doc_affine(item));
1594 else
1595 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), item->transform);
1596 sp_curve_unref(curve);
1597 curve=NULL;
1598 } else {
1599 bpath=SP_CURVE_BPATH(curve);
1600 }
1602 Path *dest = new Path;
1603 dest->SetBackData(false);
1604 {
1605 int i;
1606 bool closed = false;
1607 float lastX = 0.0;
1608 float lastY = 0.0;
1610 for (i = 0; bpath[i].code != NR_END; i++) {
1611 switch (bpath[i].code) {
1612 case NR_LINETO:
1613 lastX = bpath[i].x3;
1614 lastY = bpath[i].y3;
1615 {
1616 NR::Point tmp(lastX, lastY);
1617 dest->LineTo(tmp);
1618 }
1619 break;
1621 case NR_CURVETO:
1622 {
1623 NR::Point tmp, tms, tme;
1624 tmp[0]=bpath[i].x3;
1625 tmp[1]=bpath[i].y3;
1626 tms[0]=3 * (bpath[i].x1 - lastX);
1627 tms[1]=3 * (bpath[i].y1 - lastY);
1628 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1629 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1630 dest->CubicTo(tmp,tms,tme);
1631 }
1632 lastX = bpath[i].x3;
1633 lastY = bpath[i].y3;
1634 break;
1636 case NR_MOVETO_OPEN:
1637 case NR_MOVETO:
1638 if (closed)
1639 dest->Close();
1640 closed = (bpath[i].code == NR_MOVETO);
1641 lastX = bpath[i].x3;
1642 lastY = bpath[i].y3;
1643 {
1644 NR::Point tmp(lastX, lastY);
1645 dest->MoveTo(tmp);
1646 }
1647 break;
1648 default:
1649 break;
1650 }
1651 }
1652 if (closed)
1653 dest->Close();
1654 }
1656 if ( doTransformation ) {
1657 if ( bpath ) g_free(bpath);
1658 } else {
1659 sp_curve_unref(curve);
1660 }
1661 return dest;
1662 }
1664 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1665 {
1666 //get nearest position on path
1667 Path::cut_position pos = path->PointToCurvilignPosition(p);
1668 return pos;
1669 }
1671 NR::Point get_point_on_Path(Path *path, int piece, double t)
1672 {
1673 NR::Point p;
1674 path->PointAt(piece, t, p);
1675 return p;
1676 }
1679 /*
1680 Local Variables:
1681 mode:c++
1682 c-file-style:"stroustrup"
1683 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1684 indent-tabs-mode:nil
1685 fill-column:99
1686 End:
1687 */
1688 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :