From fbe6f6dcd9b1fedca68655ee24014d49290e18ec Mon Sep 17 00:00:00 2001
From: johanengelen <johanengelen@users.sourceforge.net>
Date: Sun, 22 Jun 2008 21:56:33 +0000
Subject: [PATCH] create method for Livarot paths to load PathVectors instead
 of NArtBpaths

---
 src/livarot/Path.h          |  7 ++++
 src/livarot/PathCutting.cpp | 69 +++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)

diff --git a/src/livarot/Path.h b/src/livarot/Path.h
index 2568f9ccc..4155bac31 100644
--- a/src/livarot/Path.h
+++ b/src/livarot/Path.h
@@ -14,6 +14,7 @@
 #include "livarot/livarot-forward.h"
 #include "libnr/nr-point.h"
 #include <libnr/nr-rect-l.h>
+#include <2geom/forward.h>
 
 struct SPStyle;
 
@@ -177,6 +178,8 @@ public:
   
   //utilitaire pour inkscape
   void  LoadArtBPath(void const *iP,NR::Matrix const &tr,bool doTransformation);
+  void  LoadPath(Geom::Path const &path, Geom::Matrix const &tr, bool doTransformation, bool append = false);
+  void  LoadPathVector(Geom::PathVector const &pv, Geom::Matrix const &tr, bool doTransformation);
 	void* MakeArtBPath();
 	
 	void  Transform(const NR::Matrix &trans);
@@ -381,6 +384,10 @@ public:
   bool   ExtendFit(int off, int N, fitting_tables &data,double treshhold, PathDescrCubicTo & res,int &worstP);
   double RaffineTk (NR::Point pt, NR::Point p0, NR::Point p1, NR::Point p2, NR::Point p3, double it);
   void   FlushPendingAddition(Path* dest,PathDescr *lastAddition,PathDescrCubicTo &lastCubic,int lastAD);
+
+private:
+    void  AddCurve(Geom::Curve const *c);
+
 };
 #endif
 
diff --git a/src/livarot/PathCutting.cpp b/src/livarot/PathCutting.cpp
index dddb7bdf4..872ae83e8 100644
--- a/src/livarot/PathCutting.cpp
+++ b/src/livarot/PathCutting.cpp
@@ -22,6 +22,10 @@
 #include "livarot/path-description.h"
 #include "libnr/n-art-bpath.h"
 #include "libnr/nr-point-matrix-ops.h"
+#include "libnr/nr-convert2geom.h"
+#include <2geom/pathvector.h>
+#include <2geom/matrix.h>
+#include <2geom/sbasis-to-bezier.h>
 
 void  Path::DashPolyline(float head,float tail,float body,int nbD,float *dashs,bool stPlain,float stOffset)
 {
@@ -405,6 +409,71 @@ void* Path::MakeArtBPath(void)
 	return bpath;
 }
 
+void  Path::AddCurve(Geom::Curve const *c)
+{
+    if(Geom::LineSegment const *line_segment = dynamic_cast<Geom::LineSegment const *>(c)) {
+        LineTo( NR::Point((*line_segment)[1][0], (*line_segment)[1][1]) );
+    }
+    /*
+    else if(Geom::QuadraticBezier const *quadratic_bezier = dynamic_cast<Geom::QuadraticBezier const  *>(c)) {
+        ...
+    }
+    */
+    else if(Geom::CubicBezier const *cubic_bezier = dynamic_cast<Geom::CubicBezier const *>(c)) {
+        Geom::Point tmp = (*cubic_bezier)[3];
+        Geom::Point tms = 3 * ((*cubic_bezier)[1] - (*cubic_bezier)[0]);
+        Geom::Point tme = 3 * ((*cubic_bezier)[3] - (*cubic_bezier)[2]);
+        CubicTo (from_2geom(tmp), from_2geom(tms), from_2geom(tme));
+    }
+    else if(Geom::EllipticalArc const *svg_elliptical_arc = dynamic_cast<Geom::EllipticalArc const *>(c)) {
+        ArcTo( from_2geom(svg_elliptical_arc->finalPoint()),
+               svg_elliptical_arc->ray(0), svg_elliptical_arc->ray(1),
+               svg_elliptical_arc->rotation_angle(),
+               svg_elliptical_arc->large_arc_flag(), svg_elliptical_arc->sweep_flag() );
+    } else { 
+        //this case handles sbasis as well as all other curve types
+        Geom::Path sbasis_path = Geom::path_from_sbasis(c->toSBasis(), 0.1);
+
+        //recurse to convert the new path resulting from the sbasis to svgd
+        for(Geom::Path::iterator iter = sbasis_path.begin(); iter != sbasis_path.end(); ++iter) {
+            AddCurve(&*iter);
+        }
+    }
+}
+
+/**  append is false by default: it means that the path should be resetted. If it is true, the path is not resetted and Geom::Path will be appended as a new path
+ */
+void  Path::LoadPath(Geom::Path const &path, Geom::Matrix const &tr, bool doTransformation, bool append)
+{
+    if (!append) {
+        SetBackData (false);
+        Reset();
+    }
+    if (path.empty())
+        return;
+
+    Geom::Path const pathtr = doTransformation ? path * tr : path;
+
+    MoveTo( from_2geom(pathtr.initialPoint()) );
+
+    for(Geom::Path::const_iterator cit = pathtr.begin(); cit != pathtr.end_open(); ++cit) {
+        AddCurve(&*cit);
+    }
+
+    if (pathtr.closed()) {
+        Close();
+    }
+}
+
+void  Path::LoadPathVector(Geom::PathVector const &pv, Geom::Matrix const &tr, bool doTransformation)
+{
+    SetBackData (false);
+    Reset();
+    for(Geom::PathVector::const_iterator it = pv.begin(); it != pv.end(); ++it) {
+        LoadPath(*it, tr, doTransformation, true);
+    }
+}
+
 void  Path::LoadArtBPath(void const *iV,NR::Matrix const &trans,bool doTransformation)
 {
   if ( iV == NULL ) return;
-- 
2.30.2