X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=polygon.cc;h=35bbd9cbe0c429aab6ba7bd5eff0d7dc6a089123;hb=599bf3fa2eb01b05ec677b628e65adb2fe4f91c3;hp=e957ec11e845a49c763371860c6c0f800c4ef754;hpb=fe0be986e63c5dabed472d68b0aa7c91ca0651db;p=universe.git

diff --git a/polygon.cc b/polygon.cc
index e957ec1..35bbd9c 100644
--- a/polygon.cc
+++ b/polygon.cc
@@ -2,9 +2,13 @@
 // Written and (C) by Francois Fleuret
 // Contact <francois.fleuret@idiap.ch> for comments & bug reports
 
+#include <iostream>
+
 #include <cmath>
 #include "polygon.h"
 
+using namespace std;
+
 static const scalar_t dl = 20.0;
 static const scalar_t repulsion_constant = 0.2;
 static const scalar_t dissipation = 0.5;
@@ -47,6 +51,7 @@ Polygon *Polygon::clone() {
   return new Polygon(_mass, _red, _green, _blue, _relative_x, _relative_y, _nb_vertices);
 }
 
+#ifdef XFIG_SUPPORT
 void Polygon::color_xfig(XFigTracer *tracer) {
   tracer->add_color(int(255 * _red), int(255 * _green), int(255 * _blue));
 }
@@ -55,7 +60,9 @@ void Polygon::print_xfig(XFigTracer *tracer) {
   tracer->draw_polygon(int(255 * _red), int(255 * _green), int(255 * _blue),
                        _nb_vertices, _x, _y);
 }
+#endif
 
+#ifdef X11_SUPPORT
 void Polygon::draw(SimpleWindow *window) {
   window->color(_red, _green, _blue);
   int x[_nb_vertices], y[_nb_vertices];
@@ -73,25 +80,22 @@ void Polygon::draw_contours(SimpleWindow *window) {
     y[n] = int(_y[n]);
   }
   window->color(0.0, 0.0, 0.0);
+  // window->color(1.0, 1.0, 1.0);
   for(int n = 0; n < _nb_vertices; n++) {
     window->draw_line(x[n], y[n], x[(n+1)%_nb_vertices], y[(n+1)%_nb_vertices]);
   }
 }
+#endif
 
-#ifdef CAIRO_SUPPORT
-void Polygon::draw(cairo_t* context_resource) {
+void Polygon::draw(Canvas *canvas) {
+  canvas->set_drawing_color(_red, _green, _blue);
+  canvas->draw_polygon(1, _nb_vertices, _x, _y);
 }
 
-void Polygon::draw_contours(cairo_t* context_resource) {
-  cairo_set_line_width(context_resource, 1.0);
-  cairo_set_source_rgb (context_resource, 0.0, 0.0, 0.0);
-  for(int n = 0; n < _nb_vertices; n++) {
-    cairo_move_to(context_resource, _x[n], _y[n]);
-    cairo_line_to(context_resource, _x[(n+1)%_nb_vertices], _y[(n+1)%_nb_vertices]);
-  }
-  cairo_stroke(context_resource);
+void Polygon::draw_contours(Canvas *canvas) {
+  canvas->set_drawing_color(0.0, 0.0, 0.0);
+  canvas->draw_polygon(0, _nb_vertices, _x, _y);
 }
-#endif
 
 void Polygon::set_vertex(int k, scalar_t x, scalar_t y) {
   _relative_x[k] = x;
@@ -195,7 +199,9 @@ void Polygon::initialize(int nb_polygons) {
 
   _nb_polygons = nb_polygons;
 
-  a = _relative_x[_nb_vertices - 1] * _relative_y[0] - _relative_x[0] * _relative_y[_nb_vertices - 1];
+  a = _relative_x[_nb_vertices - 1] * _relative_y[0]
+    - _relative_x[0] * _relative_y[_nb_vertices - 1];
+
   for(int n = 0; n < _nb_vertices - 1; n++)
     a += _relative_x[n] * _relative_y[n+1] - _relative_x[n+1] * _relative_y[n];
   a *= 0.5;