From: jfbarraud <jfbarraud@users.sourceforge.net>
Date: Fri, 5 Jun 2009 08:45:30 +0000 (+0000)
Subject: made ruler lpe "official" + restored a "unit" param and fixed end mark on closed... 
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=822f89451bdca5665d48668154c774a45ec30c85;p=inkscape.git

made ruler lpe "official" + restored a "unit" param and fixed end mark on closed path.
---

diff --git a/src/live_effects/effect.cpp b/src/live_effects/effect.cpp
index 088e9ff3a..316495eb4 100644
--- a/src/live_effects/effect.cpp
+++ b/src/live_effects/effect.cpp
@@ -100,7 +100,6 @@ const Util::EnumData<EffectType> LPETypeData[] = {
     {PERSPECTIVE_PATH,      N_("Perspective path"),        "perspective_path"},
     {COPY_ROTATE,           N_("Rotate copies"),           "copy_rotate"},
     {RECURSIVE_SKELETON,    N_("Recursive skeleton"),      "recursive_skeleton"},
-    {RULER,                 N_("Ruler"),                   "ruler"},
     {TANGENT_TO_CURVE,      N_("Tangent to curve"),        "tangent_to_curve"},
     {TEXT_LABEL,            N_("Text label"),              "text_label"},
 #endif
@@ -118,6 +117,7 @@ const Util::EnumData<EffectType> LPETypeData[] = {
     {INTERPOLATE,           N_("Interpolate Sub-Paths"),   "interpolate"},
     {ROUGH_HATCHES,         N_("Hatches (rough)"),         "rough_hatches"},
     {SKETCH,                N_("Sketch"),                  "sketch"},
+    {RULER,                 N_("Ruler"),                   "ruler"},
 };
 const Util::EnumDataConverter<EffectType> LPETypeConverter(LPETypeData, sizeof(LPETypeData)/sizeof(*LPETypeData));
 
diff --git a/src/live_effects/lpe-ruler.cpp b/src/live_effects/lpe-ruler.cpp
index 1df0e127a..67bffa1e2 100644
--- a/src/live_effects/lpe-ruler.cpp
+++ b/src/live_effects/lpe-ruler.cpp
@@ -40,6 +40,7 @@ static const Util::EnumDataConverter<BorderMarkType> BorderMarkTypeConverter(Bor
 
 LPERuler::LPERuler(LivePathEffectObject *lpeobject) :
     Effect(lpeobject),
+    unit(_("Unit"), _("Unit"), "unit", &wr, this),
     mark_distance(_("Mark distance"), _("Distance between successive ruler marks"), "mark_distance", &wr, this, 20.0),
     mark_length(_("Major length"), _("Length of major ruler marks"), "mark_length", &wr, this, 14.0),
     minor_mark_length(_("Minor length"), _("Length of minor ruler marks"), "minor_mark_length", &wr, this, 7.0),
@@ -49,6 +50,7 @@ LPERuler::LPERuler(LivePathEffectObject *lpeobject) :
     offset(_("Offset"), _("Offset of first mark"), "offset", &wr, this, 0.0),
     border_marks(_("Border marks"), _("Choose whether to draw marks at the beginning and end of the path"), "border_marks", BorderMarkTypeConverter, &wr, this, BORDERMARK_BOTH)
 {
+    registerParameter(dynamic_cast<Parameter *>(&unit));
     registerParameter(dynamic_cast<Parameter *>(&mark_distance));
     registerParameter(dynamic_cast<Parameter *>(&mark_length));
     registerParameter(dynamic_cast<Parameter *>(&minor_mark_length));
@@ -80,8 +82,14 @@ LPERuler::ruler_mark(Geom::Point const &A, Geom::Point const &n, MarkType const
 {
     using namespace Geom;
 
-    n_major = mark_length * n;
-    n_minor = minor_mark_length * n;
+    gboolean success;
+    double real_mark_length = mark_length;
+    success = sp_convert_distance(&real_mark_length, unit, &sp_unit_get_by_id(SP_UNIT_PX));
+    double real_minor_mark_length = minor_mark_length;
+    success = sp_convert_distance(&real_minor_mark_length, unit, &sp_unit_get_by_id(SP_UNIT_PX));
+
+    n_major = real_mark_length * n;
+    n_minor = real_minor_mark_length * n;
 
     Point C, D;
     switch (marktype) {
@@ -122,12 +130,17 @@ LPERuler::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_i
     
     //find at which times to draw a mark:
     std::vector<double> s_cuts;
-    for (double s = offset; s<totlength; s+=mark_distance){
+
+    double real_mark_distance = mark_distance;
+    gboolean success = sp_convert_distance(&real_mark_distance, unit, &sp_unit_get_by_id(SP_UNIT_PX));
+
+    double real_offset = offset;
+    success = sp_convert_distance(&real_offset, unit, &sp_unit_get_by_id(SP_UNIT_PX));
+    for (double s = real_offset; s<totlength; s+=real_mark_distance){
         s_cuts.push_back(s);
     }
     std::vector<std::vector<double> > roots = multi_roots(arclength, s_cuts);
     std::vector<double> t_cuts;
-    g_warning("times:");
     for (unsigned v=0; v<roots.size();v++){
         //FIXME: 2geom multi_roots solver seem to sometimes "repeat" solutions.
         //Here, we are supposed to have one and only one solution for each s.
@@ -154,6 +167,17 @@ LPERuler::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_i
     if (border_marks == BORDERMARK_END || border_marks == BORDERMARK_BOTH){
         Point A = pwd2_in.lastValue();
         Point n = rot90(unit_vector(speed.lastValue()))*sign;
+        //speed.lastValue() is somtimes wrong when the path is closed: a tiny line seg might added at the end to fix rounding errors...
+        //TODO: Find a better fix!! (How do we know if the path was closed?)
+        if ( A == pwd2_in.firstValue() &&
+             speed.segs.size() > 1 &&
+             speed.segs.back()[X].size() <= 1 &&
+             speed.segs.back()[Y].size() <= 1 &&
+             speed.segs.back()[X].tailError(0) <= 1e-10 &&
+             speed.segs.back()[Y].tailError(0) <= 1e-10 
+            ){
+            n = rot90(unit_vector(speed.segs[speed.segs.size()-2].at1()))*sign;
+        }
         output.concat (ruler_mark(A, n, MARK_MAJOR));
     }
 
diff --git a/src/live_effects/lpe-ruler.h b/src/live_effects/lpe-ruler.h
index 6a7a7282b..0c72f1637 100644
--- a/src/live_effects/lpe-ruler.h
+++ b/src/live_effects/lpe-ruler.h
@@ -19,6 +19,7 @@
 #include "live_effects/parameter/text.h"
 #include "live_effects/parameter/enum.h"
 #include "live_effects/parameter/bool.h"
+#include "live_effects/parameter/unit.h"
 
 namespace Inkscape {
 namespace LivePathEffect {
@@ -52,6 +53,7 @@ private:
     Geom::Piecewise<Geom::D2<Geom::SBasis> > ruler_mark(Geom::Point const &A, Geom::Point const &n, MarkType const &marktype);
 
     ScalarParam mark_distance;
+    UnitParam unit;
     ScalarParam mark_length;
     ScalarParam minor_mark_length;
     ScalarParam major_mark_steps;