move transform from CGALEvaluator to Nef_polyhedron - reuse in resize(). also

move ZRemover code to cgalutils, also cleanup SVG code

1 files changed, 61 insertions, 45 deletions

diff --git a/src/svg.cc b/src/svg.cc
index 66e5797..c1231a5 100644
--- a/src/svg.cc
+++ b/src/svg.cc
@@ -2,13 +2,13 @@
 #include "cgalutils.h"
 #include "svg.h"
 #include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
 #include <map>
 
 namespace OpenSCAD {
 
 // SVG code
 // currently for debugging, not necessarily pretty or useful for users. (yet)
-int svg_cursor_py = 0;
 int svg_px_width = SVG_PXW;
 int svg_px_height = SVG_PXH;
 
@@ -27,6 +27,26 @@ std::string svg_label(std::string s)
 	return out.str();
 }
 
+std::string svg_styleblock(std::string strokewidth)
+{
+	std::stringstream out;
+	// halfedge: f1/f0 = face mark, b1/b0 = body or hole, m1/m0 = halfedge mark
+	out << "\
+ <style type='text/css'>\n\
+  .halfedge_f0_b1_m0 { stroke: gold; stroke-width: __STROKEW__px } \n\
+  .halfedge_f0_b1_m1 { stroke: gold; stroke-width: __STROKEW__px } \n\
+  .halfedge_f0_b0_m0 { stroke: green; stroke-width: __STROKEW__px } \n\
+  .halfedge_f0_b0_m1 { stroke: green; stroke-width: __STROKEW__px } \n\
+  .halfedge_f1_b1_m0 { stroke: gold; stroke-width: __STROKEW__px } \n\
+  .halfedge_f1_b1_m1 { stroke: gold; stroke-width: __STROKEW__px } \n\
+  .halfedge_f1_b0_m0 { stroke: green; stroke-width: __STROKEW__px } \n\
+  .halfedge_f1_b0_m1 { stroke: green; stroke-width: __STROKEW__px } \n\
+ </style>";
+	std::string tmp = out.str();
+	boost::replace_all( tmp, "__STROKEW__", strokewidth );
+	return tmp;
+}
+
 std::string svg_border()
 {
 	std::stringstream out;
@@ -93,36 +113,27 @@ std::string dump_cgal_nef_polyhedron2_face_svg(
 	CGAL_Nef_polyhedron2::Explorer::Halfedge_around_face_const_circulator c1,
 	CGAL_Nef_polyhedron2::Explorer::Halfedge_around_face_const_circulator c2,
 	CGAL_Nef_polyhedron2::Explorer explorer,
-	std::string color,
-	bool mark,
-	CGAL_Iso_rectangle_2e bbox )
+	bool facemark, bool body )
 {
+	std::stringstream style;
+	style << "halfedge_f" << facemark << "_b" << body << "_m";
+	std::string styleclass = style.str();
+
   std::stringstream out;
 	CGAL_For_all(c1, c2) {
 		if ( explorer.is_standard( explorer.target(c1) ) ) {
 			CGAL_Point_2e source = explorer.point( explorer.source( c1 ) );
 			CGAL_Point_2e target = explorer.point( explorer.target( c1 ) );
-			CGAL_Point_2e tp1 = project_svg_2to2( source, bbox );
-			CGAL_Point_2e tp2 = project_svg_2to2( target, bbox );
-			double mod=0;
-			if (color=="green") mod=10;
-			out << "      <!-- Halfedge. Mark: " << c1->mark() << " -->\n";
-      out << "       <line"
-			  << " x1='" << CGAL::to_double(tp1.x()) + mod << "'"
-			  << " y1='" << CGAL::to_double(tp1.y()) - mod << "'"
-			  << " x2='" << CGAL::to_double(tp2.x()) + mod << "'"
-			  << " y2='" << CGAL::to_double(tp2.y()) - mod << "'"
-			  << " stroke='" << color << "'";
-			if (!mark) out << " stroke-dasharray='4 4' />\n";
-			else out << " />\n";
-			// crude "arrowhead" to indicate directionality
-			out << "       <circle"
-			  << " cx='" << CGAL::to_double(tp1.x()+ (tp2.x()-tp1.x())* 7/8) + mod << "'"
-			  << " cy='" << CGAL::to_double(tp1.y()+ (tp2.y()-tp1.y())* 7/8) - mod << "'"
-			  << " r='2'"
-			  << " fill='" << color << "' stroke='" << color << "' />\n";
+			out << "    <!-- Halfedge. Mark: " << c1->mark() << " -->\n";
+			std::string he_mark = boost::lexical_cast<std::string>(c1->mark());
+      out << "     <line"
+			  << " x1='" << CGAL::to_double(source.x()) << "'"
+			  << " y1='" << CGAL::to_double(source.y()) << "'"
+			  << " x2='" << CGAL::to_double(target.x()) << "'"
+			  << " y2='" << CGAL::to_double(target.y()) << "'"
+			  << " class='" << styleclass + he_mark << "' />\n";
 		} else {
-			out << "       <!-- 2d Nef Rays - not implemented -->\n";
+			out << "     <!-- 2d Nef Rays - not implemented -->\n";
 		}
 	}
 	return out.str();
@@ -132,27 +143,27 @@ std::string dump_svg( const CGAL_Nef_polyhedron2 &N )
 {
   std::stringstream out;
   CGAL_Nef_polyhedron2::Explorer explorer = N.explorer();
-
 	CGAL_Iso_rectangle_2e bbox = bounding_box( N );
-
   CGAL_Nef_polyhedron2::Explorer::Face_const_iterator i;
-  out << " <svg y='" << svg_cursor_py << "' width='" << svg_px_width
-		<< "' height='" << svg_px_height
-		<< "' xmlns='http://www.w3.org/2000/svg' version='1.1'>\n";
-	out << svg_border() << "\n" << svg_axes() << "\n";
-	svg_cursor_py += svg_px_height;
+
+	std::string linewidth = "0.05";
+
+	out << "<!--CGAL_Nef_polyhedron2 dump begin-->\n";
+	out << svg_header() << "\n" << svg_styleblock( linewidth ) << "\n";
 
 	for ( i = explorer.faces_begin(); i!= explorer.faces_end(); ++i ) {
 			out << "  <!-- face begin. mark: " << i->mark() << "  -->\n";
+			out << "   <!-- body begin -->\n";
 			CGAL_Nef_polyhedron2::Explorer::Halfedge_around_face_const_circulator c1
 				= explorer.face_cycle( i ), c2 ( c1 );
-			out << dump_cgal_nef_polyhedron2_face_svg( c1, c2, explorer, "red", i->mark(), bbox );
+			out << dump_cgal_nef_polyhedron2_face_svg( c1, c2, explorer, i->mark(), true );
+			out << "   <!-- body end -->\n";
 
 		  CGAL_Nef_polyhedron2::Explorer::Hole_const_iterator j;
 			for ( j = explorer.holes_begin( i ); j!= explorer.holes_end( i ); ++j ) {
 				out << "   <!-- hole begin. mark: " << j->mark() << " -->\n";
 				CGAL_Nef_polyhedron2::Explorer::Halfedge_around_face_const_circulator c3( j ), c4 ( c3 );
-				out << dump_cgal_nef_polyhedron2_face_svg( c3, c4, explorer, "green", j->mark(), bbox );
+				out << dump_cgal_nef_polyhedron2_face_svg( c3, c4, explorer, "green", j->mark() );
 				out << "   <!-- hole end -->\n";
 			}
 			out << "  <!-- face end -->\n";
@@ -182,13 +193,13 @@ public:
 	void visit( CGAL_Nef_polyhedron3::Halffacet_const_handle hfacet )
 	{
 		int contour_count = 0;
-		out << "  <!-- Halffacet. Mark: " << (*hfacet).mark() << " -->\n";
+		out << "  <!-- Halffacet visit. Mark: " << (*hfacet).mark() << " -->\n";
 		std::string color = "gold";
 		if (!(*hfacet).mark()) color = "green";
 		CGAL_Nef_polyhedron3::Halffacet_cycle_const_iterator i;
 		CGAL_forall_facet_cycles_of( i, hfacet ) {
 			CGAL_Nef_polyhedron3::SHalfloop_const_handle shl_handle;
-			out << "   <!-- Halffacet cycle: -->\n";
+			out << "   <!-- Halffacet cycle begin: -->\n";
 			if ( contour_count == 0 ) {
 				out << "    <!-- Body contour:--> \n";
 			} else {
@@ -196,13 +207,15 @@ public:
 			}
 			CGAL_Nef_polyhedron3::SHalfedge_around_facet_const_circulator c1(i), c2(c1);
 			CGAL_For_all( c1, c2 ) {
-				out << "     <line";
 				// don't know why we use source()->source(), except thats what CGAL does internally
 				CGAL_Point_3 source = c1->source()->source()->point();
 				CGAL_Point_3 target = c1->source()->target()->point();
 				CGAL_Point_2e tp1 = project_svg_3to2 ( source, bbox );
 				CGAL_Point_2e tp2 = project_svg_3to2 ( target, bbox );
-				out << " "
+        out << "     <!-- " << CGAL::to_double(source.x()) << ","
+          << CGAL::to_double(source.y()) << ","
+          << CGAL::to_double(source.z()) << " -->\n";
+				out << "     <line "
 					<< "x1='" << CGAL::to_double(tp1.x()) << "' "
 					<< "y1='" << CGAL::to_double(tp1.y()) << "' "
 					<< "x2='" << CGAL::to_double(tp2.x()) << "' "
@@ -212,31 +225,34 @@ public:
 				else out << " />\n";
 			}
 			contour_count++;
-		} // next facet cycle (i.e. next contour)
-	} // visit()
-
+			out << "   <!-- Halffacet cycle end -->\n";
+		}
+		out << "  <!-- Halffacet visit end -->\n";
+	}
 };
 
 
 std::string dump_svg( const CGAL_Nef_polyhedron3 &N )
 {
   std::stringstream out;
-	out << svg_header() << "\n" << svg_border() << "\n" << svg_axes() << "\n";
+	std::string linewidth = "0.05";
 	out << "<!--CGAL_Nef_polyhedron3 dump begin-->\n";
+	out << svg_header() << "\n" << svg_border() << "\n";
+	out << svg_styleblock( linewidth ) << "\n" << svg_axes() << "\n";
 
   CGAL_Nef_polyhedron3::Volume_const_iterator c;
   CGAL_forall_volumes(c,N) {
-    out << " <!--Processing volume...-->\n";
+    out << " <!--Volume begin-->\n";
     out << "  <!--Mark: " << (*c).mark() << "-->\n";
     CGAL_Nef_polyhedron3::Shell_entry_const_iterator it;
     CGAL_forall_shells_of(it,c) {
-      out << "  <!--Processing shell...-->\n";
+      out << "  <!--Shell begin-->\n";
       NefPoly3_dumper_svg dumper_svg(N);
       N.visit_shell_objects(CGAL_Nef_polyhedron3::SFace_const_handle(it), dumper_svg );
 			out << dumper_svg.out.str();
-      out << "  <!--Processing shell end-->\n";
+      out << "  <!--Shell end-->\n";
     }
-    out << " <!--Processing volume end-->\n";
+    out << " <!--Volume end-->\n";
   }
   out << "<!--CGAL_Nef_polyhedron3 dump end-->\n";
 	out << "</svg>";