From 179fa413b047bede6e32109e2ce82437c5fb8d34 Mon Sep 17 00:00:00 2001 From: MenTaLguY Date: Mon, 16 Jan 2006 02:36:01 +0000 Subject: moving trunk for module inkscape (bzr r1) --- src/splivarot.cpp | 1607 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1607 insertions(+) create mode 100644 src/splivarot.cpp (limited to 'src/splivarot.cpp') diff --git a/src/splivarot.cpp b/src/splivarot.cpp new file mode 100644 index 000000000..df5b82710 --- /dev/null +++ b/src/splivarot.cpp @@ -0,0 +1,1607 @@ +#define __SP_LIVAROT_C__ +/* + * splivarot.cpp + * Inkscape + * + * Created by fred on Fri Dec 05 2003. + * tweaked endlessly by bulia byak + * public domain + * + */ + +/* + * contains lots of stitched pieces of path-chemistry.c + */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include "xml/repr.h" +#include "svg/svg.h" +#include "sp-path.h" +#include "sp-text.h" +#include "sp-item-group.h" +#include "style.h" +#include "inkscape.h" +#include "document.h" +#include "message-stack.h" +#include "selection.h" +#include "desktop-handles.h" +#include "desktop.h" +#include "display/canvas-bpath.h" +#include "display/curve.h" +#include +#include "prefs-utils.h" + +#include "libnr/n-art-bpath.h" +#include "libnr/nr-path.h" +#include "xml/repr.h" +#include "xml/repr-sorting.h" + +#include "livarot/Path.h" +#include "livarot/Shape.h" + +Path *Path_for_item(SPItem *item, bool doTransformation, bool transformFull = true); +bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who); + +void sp_selected_path_boolop(bool_op bop); +void sp_selected_path_do_offset(bool expand, double prefOffset); +void sp_selected_path_create_offset_object(int expand, bool updating); + +void +sp_selected_path_union() +{ + sp_selected_path_boolop(bool_op_union); +} + +void +sp_selected_path_intersect() +{ + sp_selected_path_boolop(bool_op_inters); +} + +void +sp_selected_path_diff() +{ + sp_selected_path_boolop(bool_op_diff); +} + +void +sp_selected_path_symdiff() +{ + sp_selected_path_boolop(bool_op_symdiff); +} +void +sp_selected_path_cut() +{ + sp_selected_path_boolop(bool_op_cut); +} +void +sp_selected_path_slice() +{ + sp_selected_path_boolop(bool_op_slice); +} + + +// boolean operations +// take the source paths from the file, do the operation, delete the originals and add the results +void +sp_selected_path_boolop(bool_op bop) +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = SP_DT_SELECTION(desktop); + + GSList *il = (GSList *) selection->itemList(); + + if (g_slist_length(il) < 2) { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select at least 2 paths to perform a boolean operation.")); + return; + } + + if (g_slist_length(il) > 2) { + if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select exactly 2 paths to perform difference, XOR, division, or path cut.")); + return; + } + } + + // reverseOrderForOp marks whether the order of the list is the top->down order + // it's only used when there are 2 objects, and for operations who need to know the + // topmost object (differences, cuts) + bool reverseOrderForOp = false; + + // mettre les elements de la liste dans l'ordre pour ces operations + if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) { + // check in the tree to find which element of the selection list is topmost (for 2-operand commands only) + Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data); + Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data); + + if (a == NULL || b == NULL) { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the z-order of the objects selected for difference, XOR, division, or path cut.")); + return; + } + + if (Ancetre(a, b)) { + // a is the parent of b, already in the proper order + } else if (Ancetre(b, a)) { + // reverse order + reverseOrderForOp = true; + } else { + + // objects are not in parent/child relationship; + // find their lowest common ancestor + Inkscape::XML::Node *dad = LCA(a, b); + if (dad == NULL) { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the z-order of the objects selected for difference, XOR, division, or path cut.")); + return; + } + + // find the children of the LCA that lead from it to the a and b + Inkscape::XML::Node *as = AncetreFils(a, dad); + Inkscape::XML::Node *bs = AncetreFils(b, dad); + + // find out which comes first + for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) { + if (child == as) { + /* a first, so reverse. */ + reverseOrderForOp = true; + break; + } + if (child == bs) + break; + } + } + } + + il = g_slist_copy(il); + + // first check if all the input objects have shapes + // otherwise bail out + for (GSList *l = il; l != NULL; l = l->next) + { + SPItem *item = SP_ITEM(l->data); + if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item)) + { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is not a path, cannot perform boolean operation.")); + g_slist_free(il); + return; + } + } + + // extract the livarot Paths from the source objects + // also get the winding rule specified in the style + int nbOriginaux = g_slist_length(il); + Path *originaux[nbOriginaux]; + FillRule origWind[nbOriginaux]; + int curOrig; + { + curOrig = 0; + for (GSList *l = il; l != NULL; l = l->next) + { + SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style"); + gchar const *val = sp_repr_css_property(css, "fill-rule", NULL); + if (val && strcmp(val, "nonzero") == 0) { + origWind[curOrig]= fill_nonZero; + } else if (val && strcmp(val, "evenodd") == 0) { + origWind[curOrig]= fill_oddEven; + } else { + origWind[curOrig]= fill_nonZero; + } + + originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true); + if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1) + { + for (int i = curOrig; i >= 0; i--) delete originaux[i]; + g_slist_free(il); + return; + } + curOrig++; + } + } + // reverse if needed + // note that the selection list keeps its order + if ( reverseOrderForOp ) { + Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap; + FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai; + } + + // and work + // some temporary instances, first + Shape *theShapeA = new Shape; + Shape *theShapeB = new Shape; + Shape *theShape = new Shape; + Path *res = new Path; + res->SetBackData(false); + Path::cut_position *toCut=NULL; + int nbToCut=0; + + if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) { + // true boolean op + // get the polygons of each path, with the winding rule specified, and apply the operation iteratively + originaux[0]->ConvertWithBackData(0.001); + + originaux[0]->Fill(theShape, 0); + + theShapeA->ConvertToShape(theShape, origWind[0]); + + curOrig = 1; + for (GSList *l = il->next; l != NULL; l = l->next) { + originaux[curOrig]->ConvertWithBackData(0.001); + + originaux[curOrig]->Fill(theShape, curOrig); + + theShapeB->ConvertToShape(theShape, origWind[curOrig]); + + // les elements arrivent en ordre inverse dans la liste + theShape->Booleen(theShapeB, theShapeA, bop); + + { + Shape *swap = theShape; + theShape = theShapeA; + theShapeA = swap; + } + curOrig++; + } + + { + Shape *swap = theShape; + theShape = theShapeA; + theShapeA = swap; + } + + } else if ( bop == bool_op_cut ) { + // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi + // technically, the cut path is not necessarily a polygon (thus has no winding rule) + // it is just uncrossed, and cleaned from duplicate edges and points + // then it's fed to Booleen() which will uncross it against the other path + // then comes the trick: each edge of the cut path is duplicated (one in each direction), + // thus making a polygon. the weight of the edges of the cut are all 0, but + // the Booleen need to invert the ones inside the source polygon (for the subsequent + // ConvertToForme) + + // the cut path needs to have the highest pathID in the back data + // that's how the Booleen() function knows it's an edge of the cut + + // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing + // ConvertWithBackData parameter below simply increases the number of nodes, so for now I + // left it at 1.0. Investigate replacing this by a combination of difference and + // intersection of the same two paths. -- bb + { + Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap; + int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai; + } + originaux[0]->ConvertWithBackData(1.0); + + originaux[0]->Fill(theShape, 0); + + theShapeA->ConvertToShape(theShape, origWind[0]); + + originaux[1]->ConvertWithBackData(1.0); + + originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded + + theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers + + // les elements arrivent en ordre inverse dans la liste + theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1); + + } else if ( bop == bool_op_slice ) { + // slice is not really a boolean operation + // you just put the 2 shapes in a single polygon, uncross it + // the points where the degree is > 2 are intersections + // just check it's an intersection on the path you want to cut, and keep it + // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will + // make new subpath at each one of these positions + // inversion pour l'opŽration + { + Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap; + int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai; + } + originaux[0]->ConvertWithBackData(1.0); + + originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded + + originaux[1]->ConvertWithBackData(1.0); + + originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it + + theShape->ConvertToShape(theShapeA, fill_justDont); + + if ( theShape->hasBackData() ) { + // should always be the case, but ya never know + { + for (int i = 0; i < theShape->numberOfPoints(); i++) { + if ( theShape->getPoint(i).totalDegree() > 2 ) { + // possibly an intersection + // we need to check that at least one edge from the source path is incident to it + // before we declare it's an intersection + int cb = theShape->getPoint(i).incidentEdge[FIRST]; + int nbOrig=0; + int nbOther=0; + int piece=-1; + float t=0.0; + while ( cb >= 0 && cb < theShape->numberOfEdges() ) { + if ( theShape->ebData[cb].pathID == 0 ) { + // the source has an edge incident to the point, get its position on the path + piece=theShape->ebData[cb].pieceID; + if ( theShape->getEdge(cb).st == i ) { + t=theShape->ebData[cb].tSt; + } else { + t=theShape->ebData[cb].tEn; + } + nbOrig++; + } + if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point + cb=theShape->NextAt(i, cb); + } + if ( nbOrig > 0 && nbOther > 0 ) { + // point incident to both path and cut: an intersection + // note that you only keep one position on the source; you could have degenerate + // cases where the source crosses itself at this point, and you wouyld miss an intersection + toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position)); + toCut[nbToCut].piece=piece; + toCut[nbToCut].t=t; + nbToCut++; + } + } + } + } + { + // i think it's useless now + int i = theShape->numberOfEdges() - 1; + for (;i>=0;i--) { + if ( theShape->ebData[i].pathID == 1 ) { + theShape->SubEdge(i); + } + } + } + + } + } + + int* nesting=NULL; + int* conts=NULL; + int nbNest=0; + // pour compenser le swap juste avant + if ( bop == bool_op_slice ) { +// theShape->ConvertToForme(res, nbOriginaux, originaux, true); +// res->ConvertForcedToMoveTo(); + res->Copy(originaux[0]); + res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections + free(toCut); + } else if ( bop == bool_op_cut ) { + // il faut appeler pour desallouer PointData (pas vital, mais bon) + // the Booleen() function did not deallocated the point_data array in theShape, because this + // function needs it. + // this function uses the point_data to get the winding number of each path (ie: is a hole or not) + // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info) + theShape->ConvertToFormeNested(res, nbOriginaux, originaux, 1, nbNest, nesting, conts); + } else { + theShape->ConvertToForme(res, nbOriginaux, originaux); + } + + delete theShape; + delete theShapeA; + delete theShapeB; + for (int i = 0; i < nbOriginaux; i++) delete originaux[i]; + + if (res->descr_cmd.size() <= 1) + { + // only one command, presumably a moveto: it isn't a path + for (GSList *l = il; l != NULL; l = l->next) + { + SP_OBJECT(l->data)->deleteObject(); + } + sp_document_done(SP_DT_DOCUMENT(desktop)); + selection->clear(); + + delete res; + g_slist_free(il); + return; + } + + // remember important aspects of the source path, to be restored + Inkscape::XML::Node *repr_source; + if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) { + if (reverseOrderForOp) { + repr_source = SP_OBJECT_REPR(il->data); + } else { + repr_source = SP_OBJECT_REPR(il->next->data); + } + } else { + // find out the bottom object + GSList *sorted = g_slist_copy((GSList *) selection->reprList()); + + sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position); + repr_source = ((Inkscape::XML::Node *) sorted->data); + g_slist_free(sorted); + } + gint pos = repr_source->position(); + Inkscape::XML::Node *parent = sp_repr_parent(repr_source); + char const *id = repr_source->attribute("id"); + char const *style = repr_source->attribute("style"); + + + // remove source paths + selection->clear(); + for (GSList *l = il; l != NULL; l = l->next) { + // if this is the bottommost object, + if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) { + // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id + SP_OBJECT(l->data)->deleteObject(false); + } else { + // delete the object for real, so that its clones can take appropriate action + SP_OBJECT(l->data)->deleteObject(); + } + } + g_slist_free(il); + + // premultiply by the inverse of parent's repr + SPItem *parent_item = SP_ITEM(SP_DT_DOCUMENT(desktop)->getObjectByRepr(parent)); + NR::Matrix local = sp_item_i2doc_affine(parent_item); + gchar affinestr[80]; + gchar *transform = NULL; + if (!local.test_identity() && sp_svg_transform_write(affinestr, 79, local.inverse())) { + transform = affinestr; + } + + // now that we have the result, add it on the canvas + if ( bop == bool_op_cut || bop == bool_op_slice ) { + int nbRP=0; + Path** resPath; + if ( bop == bool_op_slice ) { + // there are moveto's at each intersection, but it's still one unique path + // so break it down and add each subpath independently + // we could call break_apart to do this, but while we have the description... + resPath=res->SubPaths(nbRP, false); + } else { + // cut operation is a bit wicked: you need to keep holes + // that's why you needed the nesting + // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need + // to get the path for each part of the polygon. that's why you need the nesting info: + // to know in wich subpath to add a subpath + resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts); + + // cleaning + if ( conts ) free(conts); + if ( nesting ) free(nesting); + } + + // add all the pieces resulting from cut or slice + for (int i=0;isvg_dump_path(); + + Inkscape::XML::Node *repr = sp_repr_new("svg:path"); + repr->setAttribute("style", style); + repr->setAttribute("d", d); + g_free(d); + + // for slice, remove fill + if (bop == bool_op_slice) { + SPCSSAttr *css; + + css = sp_repr_css_attr_new(); + sp_repr_css_set_property(css, "fill", "none"); + + sp_repr_css_change(repr, css, "style"); + + sp_repr_css_attr_unref(css); + } + + // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one + // this means it's basically random which of the pieces inherits the original's id and clones + // a better algorithm might figure out e.g. the biggest piece + repr->setAttribute("id", id); + + repr->setAttribute("transform", transform); + + // add the new repr to the parent + parent->appendChild(repr); + + // move to the saved position + repr->setPosition(pos > 0 ? pos : 0); + + selection->add(repr); + Inkscape::GC::release(repr); + + delete resPath[i]; + } + if ( resPath ) free(resPath); + + } else { + gchar *d = res->svg_dump_path(); + + Inkscape::XML::Node *repr = sp_repr_new("svg:path"); + repr->setAttribute("style", style); + + repr->setAttribute("d", d); + g_free(d); + + repr->setAttribute("transform", transform); + + repr->setAttribute("id", id); + parent->appendChild(repr); + repr->setPosition(pos > 0 ? pos : 0); + + selection->add(repr); + Inkscape::GC::release(repr); + } + + sp_document_done(SP_DT_DOCUMENT(desktop)); + + delete res; +} + + +void +sp_selected_path_outline() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = SP_DT_SELECTION(desktop); + + if (selection->isEmpty()) { + // TRANSLATORS: "to outline" means "to convert stroke to path" + desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select path(s) to outline.")); + return; + } + + bool did = false; + + for (GSList *items = g_slist_copy((GSList *) selection->itemList()); + items != NULL; + items = items->next) { + + SPItem *item = (SPItem *) items->data; + + if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item)) + continue; + + SPCurve *curve = NULL; + if (SP_IS_SHAPE(item)) { + curve = sp_shape_get_curve(SP_SHAPE(item)); + if (curve == NULL) + continue; + } + if (SP_IS_TEXT(item)) { + curve = SP_TEXT(item)->getNormalizedBpath(); + if (curve == NULL) + continue; + } + + { // pas de stroke pas de chocolat + SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style"); + gchar const *val = sp_repr_css_property(css, "stroke", NULL); + + if (val == NULL || strcmp(val, "none") == 0) { + sp_curve_unref(curve); + continue; + } + } + + // remember old stroke style, to be set on fill + SPCSSAttr *ncss; + { + SPCSSAttr *ocss = sp_repr_css_attr(SP_OBJECT_REPR(item), "style"); + gchar const *val = sp_repr_css_property(ocss, "stroke", NULL); + gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL); + + ncss = sp_repr_css_attr_new(); + + sp_repr_css_set_property(ncss, "stroke", "none"); + sp_repr_css_set_property(ncss, "stroke-opacity", "1.0"); + sp_repr_css_set_property(ncss, "fill", val); + if ( opac ) { + sp_repr_css_set_property(ncss, "fill-opacity", opac); + } else { + sp_repr_css_set_property(ncss, "fill-opacity", "1.0"); + } + } + + NR::Matrix const transform(item->transform); + gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style")); + + float o_width, o_miter; + JoinType o_join; + ButtType o_butt; + + { + SPStyle *i_style = SP_OBJECT(item)->style; + int jointype, captype; + + jointype = i_style->stroke_linejoin.computed; + captype = i_style->stroke_linecap.computed; + o_width = i_style->stroke_width.computed; + + switch (jointype) { + case SP_STROKE_LINEJOIN_MITER: + o_join = join_pointy; + break; + case SP_STROKE_LINEJOIN_ROUND: + o_join = join_round; + break; + default: + o_join = join_straight; + break; + } + + switch (captype) { + case SP_STROKE_LINECAP_SQUARE: + o_butt = butt_square; + break; + case SP_STROKE_LINECAP_ROUND: + o_butt = butt_round; + break; + default: + o_butt = butt_straight; + break; + } + + if (o_width < 0.1) + o_width = 0.1; + o_miter = i_style->stroke_miterlimit.value * o_width; + } + + Path *orig = Path_for_item(item, false); + if (orig == NULL) { + g_free(style); + sp_curve_unref(curve); + continue; + } + + Path *res = new Path; + res->SetBackData(false); + + + { + orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter); + + orig->Coalesce(0.5 * o_width); + + Shape *theShape = new Shape; + Shape *theRes = new Shape; + + res->ConvertWithBackData(1.0); + res->Fill(theShape, 0); + theRes->ConvertToShape(theShape, fill_positive); + + Path *originaux[1]; + originaux[0] = res; + theRes->ConvertToForme(orig, 1, originaux); + + delete theShape; + delete theRes; + } + + if (orig->descr_cmd.size() <= 1) { + // ca a merdŽ, ou bien le resultat est vide + delete res; + delete orig; + g_free(style); + continue; + } + + did = true; + + sp_curve_unref(curve); + // remember the position of the item + gint pos = SP_OBJECT_REPR(item)->position(); + // remember parent + Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent(); + // remember id + char const *id = SP_OBJECT_REPR(item)->attribute("id"); + + selection->remove(item); + SP_OBJECT(item)->deleteObject(false); + + if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether + + Inkscape::XML::Node *repr = sp_repr_new("svg:path"); + + // restore old style + repr->setAttribute("style", style); + + // set old stroke style on fill + sp_repr_css_change(repr, ncss, "style"); + + sp_repr_css_attr_unref(ncss); + + gchar *str = orig->svg_dump_path(); + repr->setAttribute("d", str); + g_free(str); + + // add the new repr to the parent + parent->appendChild(repr); + + // move to the saved position + repr->setPosition(pos > 0 ? pos : 0); + + repr->setAttribute("id", id); + + SPItem *newitem = (SPItem *) SP_DT_DOCUMENT(desktop)->getObjectByRepr(repr); + sp_item_write_transform(newitem, repr, transform); + + selection->add(repr); + + Inkscape::GC::release(repr); + } + + delete res; + delete orig; + g_free(style); + + } + + if (did) { + sp_document_done(SP_DT_DOCUMENT(desktop)); + } else { + // TRANSLATORS: "to outline" means "to convert stroke to path" + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("No stroked paths to outline in the selection.")); + return; + } +} + + +void +sp_selected_path_offset() +{ + double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0); + + sp_selected_path_do_offset(true, prefOffset); +} +void +sp_selected_path_inset() +{ + double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0); + + sp_selected_path_do_offset(false, prefOffset); +} + +void +sp_selected_path_offset_screen(double pixels) +{ + sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom()); +} + +void +sp_selected_path_inset_screen(double pixels) +{ + sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom()); +} + + +void sp_selected_path_create_offset_object_zero() +{ + sp_selected_path_create_offset_object(0, false); +} + +void sp_selected_path_create_offset() +{ + sp_selected_path_create_offset_object(1, false); +} +void sp_selected_path_create_inset() +{ + sp_selected_path_create_offset_object(-1, false); +} + +void sp_selected_path_create_updating_offset_object_zero() +{ + sp_selected_path_create_offset_object(0, true); +} + +void sp_selected_path_create_updating_offset() +{ + sp_selected_path_create_offset_object(1, true); +} +void sp_selected_path_create_updating_inset() +{ + sp_selected_path_create_offset_object(-1, true); +} + +void +sp_selected_path_create_offset_object(int expand, bool updating) +{ + Inkscape::Selection *selection; + Inkscape::XML::Node *repr; + SPItem *item; + SPCurve *curve; + gchar *style, *str; + SPDesktop *desktop; + float o_width, o_miter; + JoinType o_join; + ButtType o_butt; + + curve = NULL; + + desktop = SP_ACTIVE_DESKTOP; + + selection = SP_DT_SELECTION(desktop); + + item = selection->singleItem(); + + if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is not a path, cannot inset/outset.")); + return; + } + if (SP_IS_SHAPE(item)) + { + curve = sp_shape_get_curve(SP_SHAPE(item)); + if (curve == NULL) + return; + } + if (SP_IS_TEXT(item)) + { + curve = SP_TEXT(item)->getNormalizedBpath(); + if (curve == NULL) + return; + } + + NR::Matrix const transform(item->transform); + + sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity()); + + style = g_strdup(SP_OBJECT(item)->repr->attribute("style")); + + // remember the position of the item + gint pos = SP_OBJECT_REPR(item)->position(); + // remember parent + Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent(); + + { + SPStyle *i_style = SP_OBJECT(item)->style; + int jointype, captype; + + jointype = i_style->stroke_linejoin.value; + captype = i_style->stroke_linecap.value; + o_width = i_style->stroke_width.computed; + if (jointype == SP_STROKE_LINEJOIN_MITER) + { + o_join = join_pointy; + } + else if (jointype == SP_STROKE_LINEJOIN_ROUND) + { + o_join = join_round; + } + else + { + o_join = join_straight; + } + if (captype == SP_STROKE_LINECAP_SQUARE) + { + o_butt = butt_square; + } + else if (captype == SP_STROKE_LINECAP_ROUND) + { + o_butt = butt_round; + } + else + { + o_butt = butt_straight; + } + + { + double prefOffset = 1.0; + prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset); + o_width = prefOffset; + } + + if (o_width < 0.01) + o_width = 0.01; + o_miter = i_style->stroke_miterlimit.value * o_width; + } + + Path *orig = Path_for_item(item, true, false); + if (orig == NULL) + { + g_free(style); + sp_curve_unref(curve); + return; + } + + Path *res = new Path; + res->SetBackData(false); + + { + Shape *theShape = new Shape; + Shape *theRes = new Shape; + + orig->ConvertWithBackData(1.0); + orig->Fill(theShape, 0); + + SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style"); + gchar const *val = sp_repr_css_property(css, "fill-rule", NULL); + if (val && strcmp(val, "nonzero") == 0) + { + theRes->ConvertToShape(theShape, fill_nonZero); + } + else if (val && strcmp(val, "evenodd") == 0) + { + theRes->ConvertToShape(theShape, fill_oddEven); + } + else + { + theRes->ConvertToShape(theShape, fill_nonZero); + } + + Path *originaux[1]; + originaux[0] = orig; + theRes->ConvertToForme(res, 1, originaux); + + delete theShape; + delete theRes; + } + + sp_curve_unref(curve); + + if (res->descr_cmd.size() <= 1) + { + // pas vraiment de points sur le resultat + // donc il ne reste rien + sp_document_done(SP_DT_DOCUMENT(desktop)); + selection->clear(); + + delete res; + delete orig; + g_free(style); + return; + } + + { + gchar tstr[80]; + + tstr[79] = '\0'; + + repr = sp_repr_new("svg:path"); + repr->setAttribute("sodipodi:type", "inkscape:offset"); + sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0 + ? o_width + : expand < 0 + ? -o_width + : 0 )); + + str = res->svg_dump_path(); + repr->setAttribute("inkscape:original", str); + g_free(str); + + if ( updating ) { + char const *id = SP_OBJECT(item)->repr->attribute("id"); + char const *uri = g_strdup_printf("#%s", id); + repr->setAttribute("xlink:href", uri); + g_free((void *) uri); + } else { + repr->setAttribute("inkscape:href", NULL); + } + + repr->setAttribute("style", style); + + // add the new repr to the parent + parent->appendChild(repr); + + // move to the saved position + repr->setPosition(pos > 0 ? pos : 0); + + SPItem *nitem = (SPItem *) SP_DT_DOCUMENT(desktop)->getObjectByRepr(repr); + + if ( updating ) { + // on conserve l'original + // we reapply the transform to the original (offset will feel it) + sp_item_write_transform(item, SP_OBJECT_REPR(item), transform); + } else { + // delete original, apply the transform to the offset + SP_OBJECT(item)->deleteObject(false); + sp_item_write_transform(nitem, repr, transform); + } + + // The object just created from a temporary repr is only a seed. + // We need to invoke its write which will update its real repr (in particular adding d=) + SP_OBJECT(nitem)->updateRepr(); + + Inkscape::GC::release(repr); + + selection->set(nitem); + } + + sp_document_done(SP_DT_DOCUMENT(desktop)); + + delete res; + delete orig; + + g_free(style); +} + + + + + + + + + + + + +void +sp_selected_path_do_offset(bool expand, double prefOffset) +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = SP_DT_SELECTION(desktop); + + if (selection->isEmpty()) { + desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select path(s) to inset/outset.")); + return; + } + + bool did = false; + + for (GSList *items = g_slist_copy((GSList *) selection->itemList()); + items != NULL; + items = items->next) { + + SPItem *item = (SPItem *) items->data; + + if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item)) + continue; + + SPCurve *curve = NULL; + if (SP_IS_SHAPE(item)) { + curve = sp_shape_get_curve(SP_SHAPE(item)); + if (curve == NULL) + continue; + } + if (SP_IS_TEXT(item)) { + curve = SP_TEXT(item)->getNormalizedBpath(); + if (curve == NULL) + continue; + } + + NR::Matrix const transform(item->transform); + + sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity()); + + gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style")); + + float o_width, o_miter; + JoinType o_join; + ButtType o_butt; + + { + SPStyle *i_style = SP_OBJECT(item)->style; + int jointype, captype; + + jointype = i_style->stroke_linejoin.value; + captype = i_style->stroke_linecap.value; + o_width = i_style->stroke_width.computed; + + switch (jointype) { + case SP_STROKE_LINEJOIN_MITER: + o_join = join_pointy; + break; + case SP_STROKE_LINEJOIN_ROUND: + o_join = join_round; + break; + default: + o_join = join_straight; + break; + } + + switch (captype) { + case SP_STROKE_LINECAP_SQUARE: + o_butt = butt_square; + break; + case SP_STROKE_LINECAP_ROUND: + o_butt = butt_round; + break; + default: + o_butt = butt_straight; + break; + } + + o_width = prefOffset; + + if (o_width < 0.1) + o_width = 0.1; + o_miter = i_style->stroke_miterlimit.value * o_width; + } + + Path *orig = Path_for_item(item, false); + if (orig == NULL) { + g_free(style); + sp_curve_unref(curve); + continue; + } + + Path *res = new Path; + res->SetBackData(false); + + { + Shape *theShape = new Shape; + Shape *theRes = new Shape; + + orig->ConvertWithBackData(0.03); + orig->Fill(theShape, 0); + + SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style"); + gchar const *val = sp_repr_css_property(css, "fill-rule", NULL); + if (val && strcmp(val, "nonzero") == 0) + { + theRes->ConvertToShape(theShape, fill_nonZero); + } + else if (val && strcmp(val, "evenodd") == 0) + { + theRes->ConvertToShape(theShape, fill_oddEven); + } + else + { + theRes->ConvertToShape(theShape, fill_nonZero); + } + + // et maintenant: offset + // methode inexacte +/* Path *originaux[1]; + originaux[0] = orig; + theRes->ConvertToForme(res, 1, originaux); + + if (expand) { + res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter); + } else { + res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter); + } + + orig->ConvertWithBackData(1.0); + orig->Fill(theShape, 0); + theRes->ConvertToShape(theShape, fill_positive); + originaux[0] = orig; + theRes->ConvertToForme(res, 1, originaux); + + if (o_width >= 0.5) { + // res->Coalesce(1.0); + res->ConvertEvenLines(1.0); + res->Simplify(1.0); + } else { + // res->Coalesce(o_width); + res->ConvertEvenLines(1.0*o_width); + res->Simplify(1.0 * o_width); + } */ + // methode par makeoffset + + if (expand) + { + theShape->MakeOffset(theRes, o_width, o_join, o_miter); + } + else + { + theShape->MakeOffset(theRes, -o_width, o_join, o_miter); + } + theRes->ConvertToShape(theShape, fill_positive); + + res->Reset(); + theRes->ConvertToForme(res); + + if (o_width >= 1.0) + { + res->ConvertEvenLines(1.0); + res->Simplify(1.0); + } + else + { + res->ConvertEvenLines(1.0*o_width); + res->Simplify(1.0 * o_width); + } + + delete theShape; + delete theRes; + } + + did = true; + + sp_curve_unref(curve); + // remember the position of the item + gint pos = SP_OBJECT_REPR(item)->position(); + // remember parent + Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent(); + // remember id + char const *id = SP_OBJECT_REPR(item)->attribute("id"); + + selection->remove(item); + SP_OBJECT(item)->deleteObject(false); + + if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether + + gchar tstr[80]; + + tstr[79] = '\0'; + + Inkscape::XML::Node *repr = sp_repr_new("svg:path"); + + repr->setAttribute("style", style); + + gchar *str = res->svg_dump_path(); + repr->setAttribute("d", str); + g_free(str); + + // add the new repr to the parent + parent->appendChild(repr); + + // move to the saved position + repr->setPosition(pos > 0 ? pos : 0); + + SPItem *newitem = (SPItem *) SP_DT_DOCUMENT(desktop)->getObjectByRepr(repr); + + // reapply the transform + sp_item_write_transform(newitem, repr, transform); + + repr->setAttribute("id", id); + + selection->add(repr); + + Inkscape::GC::release(repr); + } + + delete orig; + delete res; + } + + if (did) { + sp_document_done(SP_DT_DOCUMENT(desktop)); + } else { + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("No paths to inset/outset in the selection.")); + return; + } +} + + + +//return true if we changed something, else false +bool +sp_selected_path_simplify_item(SPDesktop *desktop, Inkscape::Selection *selection, SPItem *item, + float threshold, bool justCoalesce, + float angleLimit, bool breakableAngles, + gdouble size, bool modifySelection) +{ + if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item))) + return false; + + //If this is a group, do the children instead + if (SP_IS_GROUP(item)) { + + bool didSomething = false; + + for ( GSList *children = sp_item_group_item_list(SP_GROUP(item)); + children ; children = children->next) { + + SPItem *child = (SPItem *) children->data; + didSomething |= sp_selected_path_simplify_item(desktop, selection, child, threshold, justCoalesce, + angleLimit, breakableAngles, size, false); + } + + return didSomething; + } + + + SPCurve *curve = NULL; + + if (SP_IS_SHAPE(item)) { + curve = sp_shape_get_curve(SP_SHAPE(item)); + if (!curve) + return false; + } + + if (SP_IS_TEXT(item)) { + curve = SP_TEXT(item)->getNormalizedBpath(); + if (!curve) + return false; + } + + // save the transform, to re-apply it after simplification + NR::Matrix const transform(item->transform); + + /* + reset the transform, effectively transforming the item by transform.inverse(); + this is necessary so that the item is transformed twice back and forth, + allowing all compensations to cancel out regardless of the preferences + */ + sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity()); + + gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style")); + + Path *orig = Path_for_item(item, false); + if (orig == NULL) { + g_free(style); + sp_curve_unref(curve); + return false; + } + + sp_curve_unref(curve); + // remember the position of the item + gint pos = SP_OBJECT_REPR(item)->position(); + // remember parent + Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent(); + // remember id + char const *id = SP_OBJECT_REPR(item)->attribute("id"); + + //If a group was selected, to not change the selection list + if (modifySelection) + selection->remove(item); + + SP_OBJECT(item)->deleteObject(false); + + if ( justCoalesce ) { + orig->Coalesce(threshold * size); + } else { + orig->ConvertEvenLines(threshold * size); + orig->Simplify(threshold * size); + } + + Inkscape::XML::Node *repr = sp_repr_new("svg:path"); + + repr->setAttribute("style", style); + + gchar *str = orig->svg_dump_path(); + repr->setAttribute("d", str); + g_free(str); + + // restore id + repr->setAttribute("id", id); + + // add the new repr to the parent + parent->appendChild(repr); + + // move to the saved position + repr->setPosition(pos > 0 ? pos : 0); + + SPItem *newitem = (SPItem *) SP_DT_DOCUMENT(desktop)->getObjectByRepr(repr); + + // reapply the transform + sp_item_write_transform(newitem, repr, transform); + + //If we are not in a selected group + if (modifySelection) + selection->add(repr); + + Inkscape::GC::release(repr); + + // clean up + if (orig) delete orig; + + return true; +} + + +void +sp_selected_path_simplify_selection(float threshold, bool justCoalesce, + float angleLimit, bool breakableAngles) +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = SP_DT_SELECTION(desktop); + + if (selection->isEmpty()) { + desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, + _("Select path(s) to simplify.")); + return; + } + + // remember selection size + NR::Rect bbox = selection->bounds(); + gdouble size = L2(bbox.dimensions()); + + bool didSomething = false; + + //Loop through all of the items in the selection + for (GSList *items = g_slist_copy((GSList *) selection->itemList()); + items != NULL; items = items->next) { + + SPItem *item = (SPItem *) items->data; + + if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item))) + continue; + + didSomething |= sp_selected_path_simplify_item(desktop, selection, item, + threshold, justCoalesce, angleLimit, breakableAngles, size, true); + } + + + if (didSomething) + sp_document_done(SP_DT_DOCUMENT(desktop)); + else + desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("No paths to simplify in the selection.")); + +} + + +// globals for keeping track of accelerated simplify +static double previousTime = 0.0; +static gdouble simplifyMultiply = 1.0; + +void +sp_selected_path_simplify(void) +{ + gdouble simplifyThreshold = + prefs_get_double_attribute("options.simplifythreshold", "value", 0.003); + bool simplifyJustCoalesce = + (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0); + + //Get the current time + GTimeVal currentTimeVal; + g_get_current_time(¤tTimeVal); + double currentTime = currentTimeVal.tv_sec * 1000000 + + currentTimeVal.tv_usec; + + //Was the previous call to this function recent? (<0.5 sec) + if (previousTime > 0.0 && currentTime - previousTime < 500000.0) { + + // add to the threshold 1/2 of its original value + simplifyMultiply += 0.5; + simplifyThreshold *= simplifyMultiply; + + } else { + // reset to the default + simplifyMultiply = 1; + } + + //remember time for next call + previousTime = currentTime; + + //g_print("%g\n", simplify_threshold); + + //Make the actual call + sp_selected_path_simplify_selection(simplifyThreshold, + simplifyJustCoalesce, 0.0, false); +} + + + +// fonctions utilitaires + +bool +Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who) +{ + if (who == NULL || a == NULL) + return false; + if (who == a) + return true; + return Ancetre(sp_repr_parent(a), who); +} + +Path * +Path_for_item(SPItem *item, bool doTransformation, bool transformFull) +{ + SPCurve *curve; + + if (!item) + return NULL; + + if (SP_IS_SHAPE(item)) + { + curve = sp_shape_get_curve(SP_SHAPE(item)); + } + else if (SP_IS_TEXT(item)) + { + curve = SP_TEXT(item)->getNormalizedBpath(); + } + else + { + curve = NULL; + } + + if (!curve) + return NULL; + NArtBpath *bpath = curve->bpath; + if (bpath == NULL) + return NULL; + + if ( doTransformation ) { + if (transformFull) + bpath = nr_artpath_affine(curve->bpath, sp_item_i2doc_affine(item)); + else + bpath = nr_artpath_affine(curve->bpath, item->transform); + sp_curve_unref(curve); + curve=NULL; + } else { + bpath=curve->bpath; + } + + Path *dest = new Path; + dest->SetBackData(false); + { + int i; + bool closed = false; + float lastX = 0.0; + float lastY = 0.0; + + for (i = 0; bpath[i].code != NR_END; i++) { + switch (bpath[i].code) { + case NR_LINETO: + lastX = bpath[i].x3; + lastY = bpath[i].y3; + { + NR::Point tmp(lastX, lastY); + dest->LineTo(tmp); + } + break; + + case NR_CURVETO: + { + NR::Point tmp, tms, tme; + tmp[0]=bpath[i].x3; + tmp[1]=bpath[i].y3; + tms[0]=3 * (bpath[i].x1 - lastX); + tms[1]=3 * (bpath[i].y1 - lastY); + tme[0]=3 * (bpath[i].x3 - bpath[i].x2); + tme[1]=3 * (bpath[i].y3 - bpath[i].y2); + dest->CubicTo(tmp,tms,tme); + } + lastX = bpath[i].x3; + lastY = bpath[i].y3; + break; + + case NR_MOVETO_OPEN: + case NR_MOVETO: + if (closed) + dest->Close(); + closed = (bpath[i].code == NR_MOVETO); + lastX = bpath[i].x3; + lastY = bpath[i].y3; + { + NR::Point tmp(lastX, lastY); + dest->MoveTo(tmp); + } + break; + default: + break; + } + } + if (closed) + dest->Close(); + } + + if ( doTransformation ) { + if ( bpath ) nr_free(bpath); + } else { + sp_curve_unref(curve); + } + return dest; +} + +NR::Maybe get_nearest_position_on_Path(SPItem *item, NR::Point p) +{ + //Create and initialize a livarot Path + Path *path = Path_for_item(item, true, true); + if (path == NULL) { + return NR::Nothing(); + } + path->ConvertWithBackData(0.01); + + //get nearest position on path + Path::cut_position pos = path->PointToCurvilignPosition(p); + delete path; + return pos; +} + +NR::Point get_point_on_Path(SPItem *item, int piece, double t) +{ + //Create and initialize a livarot Path + Path *path = Path_for_item(item, true, true); + path->ConvertWithBackData(0.01); + + //get nearest position on path + NR::Point p; + path->PointAt(piece, t, p); + delete path; + return p; +} + + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 : -- cgit v1.2.3