Ported some minor methods to XS

lib/Slic3r/Line.pm

@@ -5,8 +5,6 @@ use warnings;
 # a line is a two-points line
 use parent 'Slic3r::Polyline';
 
-use Slic3r::Geometry qw(A B X Y);
-
 sub intersection {
     my $self = shift;
     my ($line, $require_crossing) = @_;

lib/Slic3r/Polygon.pm

@@ -5,15 +5,7 @@ use warnings;
 # a polygon is a closed polyline.
 use parent 'Slic3r::Polyline';
 
-use Slic3r::Geometry qw(
-    polygon_segment_having_point
-    PI X1 X2 Y1 Y2 epsilon scaled_epsilon);
-use Slic3r::Geometry::Clipper qw(intersection_pl);
-
-sub wkt {
-    my $self = shift;
-    return sprintf "POLYGON((%s))", join ',', map "$_->[0] $_->[1]", @$self;
-}
+use Slic3r::Geometry qw(PI);
 
 sub dump_perl {
     my $self = shift;

lib/Slic3r/Polyline.pm

@@ -2,9 +2,7 @@ package Slic3r::Polyline;
 use strict;
 use warnings;
 
-use List::Util qw(first);
-use Slic3r::Geometry qw(X Y PI epsilon);
-use Slic3r::Geometry::Clipper qw(JT_SQUARE);
+use Slic3r::Geometry qw(X Y);
 
 sub new_scale {
     my $class = shift;
@@ -12,29 +10,4 @@ sub new_scale {
     return $class->new(map [ Slic3r::Geometry::scale($_->[X]), Slic3r::Geometry::scale($_->[Y]) ], @points);
 }
 
-sub wkt {
-    my $self = shift;
-    return sprintf "LINESTRING((%s))", join ',', map "$_->[0] $_->[1]", @$self;
-}
-
-sub bounding_box {
-    my $self = shift;
-    return Slic3r::Geometry::BoundingBox->new_from_points([ @$self ]);
-}
-
-sub size {
-    my $self = shift;
-    return [ Slic3r::Geometry::size_2D($self) ];
-}
-
-sub is_straight {
-    my ($self) = @_;
-    
-    # Check that each segment's direction is equal to the line connecting
-    # first point and last point. (Checking each line against the previous
-    # one would have caused the error to accumulate.)
-    my $dir = Slic3r::Line->new($self->first_point, $self->last_point)->direction;
-    return !defined first { !$_->parallel_to($dir) } @{$self->lines};
-}
-
 1;

xs/src/libslic3r/Polygon.cpp

@@ -209,6 +209,19 @@ Polygon::centroid() const
     return Point(x_temp/(6*area_temp), y_temp/(6*area_temp));
 }
 
+std::string
+Polygon::wkt() const
+{
+    std::ostringstream wkt;
+    wkt << "POLYGON((";
+    for (Points::const_iterator p = this->points.begin(); p != this->points.end(); ++p) {
+        wkt << p->x << " " << p->y;
+        if (p != this->points.end()-1) wkt << ",";
+    }
+    wkt << "))";
+    return wkt.str();
+}
+
 #ifdef SLIC3RXS
 REGISTER_CLASS(Polygon, "Polygon");
 

xs/src/libslic3r/Polygon.hpp

@@ -3,6 +3,7 @@
 
 #include <myinit.h>
 #include <vector>
+#include <string>
 #include "Line.hpp"
 #include "MultiPoint.hpp"
 #include "Polyline.hpp"
@@ -36,6 +37,7 @@ class Polygon : public MultiPoint {
     void simplify(double tolerance, Polygons &polygons) const;
     void triangulate_convex(Polygons* polygons) const;
     Point centroid() const;
+    std::string wkt() const;
     
     #ifdef SLIC3RXS
     void from_SV_check(SV* poly_sv);

xs/src/libslic3r/Polyline.cpp

@@ -1,6 +1,7 @@
 #include "Polyline.hpp"
 #include "Line.hpp"
 #include "Polygon.hpp"
+#include <iostream>
 
 namespace Slic3r {
 
@@ -162,6 +163,34 @@ Polyline::split_at(const Point &point, Polyline* p1, Polyline* p2) const
     }
 }
 
+bool
+Polyline::is_straight() const
+{
+    /*  Check that each segment's direction is equal to the line connecting
+        first point and last point. (Checking each line against the previous
+        one would cause the error to accumulate.) */
+    double dir = Line(this->first_point(), this->last_point()).direction();
+    
+    Lines lines = this->lines();
+    for (Lines::const_iterator line = lines.begin(); line != lines.end(); ++line) {
+        if (!line->parallel_to(dir)) return false;
+    }
+    return true;
+}
+
+std::string
+Polyline::wkt() const
+{
+    std::ostringstream wkt;
+    wkt << "LINESTRING((";
+    for (Points::const_iterator p = this->points.begin(); p != this->points.end(); ++p) {
+        wkt << p->x << " " << p->y;
+        if (p != this->points.end()-1) wkt << ",";
+    }
+    wkt << "))";
+    return wkt.str();
+}
+
 
 #ifdef SLIC3RXS
 REGISTER_CLASS(Polyline, "Polyline");

xs/src/libslic3r/Polyline.hpp

@@ -3,6 +3,7 @@
 
 #include "Line.hpp"
 #include "MultiPoint.hpp"
+#include <string>
 
 namespace Slic3r {
 
@@ -23,6 +24,8 @@ class Polyline : public MultiPoint {
     void equally_spaced_points(double distance, Points* points) const;
     void simplify(double tolerance);
     void split_at(const Point &point, Polyline* p1, Polyline* p2) const;
+    bool is_straight() const;
+    std::string wkt() const;
     
     #ifdef SLIC3RXS
     void from_SV_check(SV* poly_sv);

xs/xsp/Polygon.xsp

@@ -46,6 +46,7 @@
             RETVAL = new BoundingBox();
             THIS->bounding_box(RETVAL);
         %};
+    std::string wkt();
 %{
 
 Polygon*

xs/xsp/Polyline.xsp

@@ -34,6 +34,13 @@
     void simplify(double tolerance);
     void split_at(Point* point, Polyline* p1, Polyline* p2)
         %code{% THIS->split_at(*point, p1, p2); %};
+    bool is_straight();
+    BoundingBox* bounding_box()
+        %code{%
+            RETVAL = new BoundingBox();
+            THIS->bounding_box(RETVAL);
+        %};
+    std::string wkt();
 %{
 
 Polyline*
@@ -81,9 +88,7 @@ Polyline::grow(delta, scale = CLIPPER_OFFSET_SCALE, joinType = ClipperLib::jtSqu
     ClipperLib::JoinType    joinType
     double                  miterLimit
     CODE:
-        Polylines polylines;
-        polylines.push_back(*THIS);
-        offset(polylines, RETVAL, delta, scale, joinType, miterLimit);
+        offset(*THIS, RETVAL, delta, scale, joinType, miterLimit);
     OUTPUT:
         RETVAL