Cairo support works, both to draw in the window and to write as a png image in a...

[universe.git] / polygon.cc

diff --git a/polygon.cc b/polygon.cc
index 1b8b362..1c109c3 100644 (file)
--- a/polygon.cc
+++ b/polygon.cc
@@ -47,8 +47,13 @@ Polygon *Polygon::clone() {
   return new Polygon(_mass, _red, _green, _blue, _relative_x, _relative_y, _nb_vertices);
 }
 
-void Polygon::print_fig(XFigTracer *tracer) {
-  tracer->draw_polygon(_nb_vertices, _x, _y);
+void Polygon::color_xfig(XFigTracer *tracer) {
+  tracer->add_color(int(255 * _red), int(255 * _green), int(255 * _blue));
+}
+
+void Polygon::print_xfig(XFigTracer *tracer) {
+  tracer->draw_polygon(int(255 * _red), int(255 * _green), int(255 * _blue),
+                       _nb_vertices, _x, _y);
 }
 
 void Polygon::draw(SimpleWindow *window) {
@@ -67,11 +72,39 @@ void Polygon::draw_contours(SimpleWindow *window) {
     x[n] = int(_x[n]);
     y[n] = int(_y[n]);
   }
-  window->color(0.0, 0.0, 0.0);
-  for(int n = 0; n < _nb_vertices; 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]);
+  }
 }
 
+#ifdef CAIRO_SUPPORT
+void Polygon::draw(cairo_t* context_resource) {
+  cairo_set_line_width(context_resource, 1.0);
+  cairo_set_source_rgb (context_resource, _red, _green, _blue);
+  cairo_move_to(context_resource, _x[0], _y[0]);
+  for(int n = 0; n < _nb_vertices; n++) {
+    cairo_line_to(context_resource, _x[n], _y[n]);
+  }
+  cairo_close_path(context_resource);
+  cairo_stroke_preserve(context_resource);
+  cairo_fill(context_resource);
+}
+
+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);
+  cairo_set_source_rgb (context_resource, 1.0, 1.0, 1.0);
+  cairo_move_to(context_resource, _x[0], _y[0]);
+  for(int n = 0; n < _nb_vertices; n++) {
+    cairo_line_to(context_resource, _x[n], _y[n]);
+  }
+  cairo_close_path(context_resource);
+  cairo_stroke(context_resource);
+}
+#endif
+
 void Polygon::set_vertex(int k, scalar_t x, scalar_t y) {
   _relative_x[k] = x;
   _relative_y[k] = y;
@@ -484,4 +517,3 @@ bool Polygon::collide(Polygon *p) {
 
   return false;
 }
-