moving trunk for module inkscape

(bzr r1)

1 files changed, 1607 insertions, 0 deletions

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 <buliabyak@users.sf.net>
+ *  public domain
+ *
+ */
+
+/*
+ * contains lots of stitched pieces of path-chemistry.c
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#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 <glibmm/i18n.h>
+#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 <b>at least 2 paths</b> 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 <b>exactly 2 paths</b> 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 <b>z-order</b> 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 <b>z-order</b> 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 <b>not a path</b>, 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;i<nbRP;i++) {
+            gchar *d = resPath[i]->svg_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 <b>path(s)</b> 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, _("<b>No stroked paths</b> 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 <b>not a path</b>, 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 <b>path(s)</b> 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, _("<b>No paths</b> 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 <b>path(s)</b> 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, _("<b>No paths</b> 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(&currentTimeVal);
+    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<Path::cut_position> 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 :