public:
CanvasCairo(scalar_t scale, int width, int height);
-
~CanvasCairo();
+
+ virtual void set_line_width(scalar_t w);
virtual void set_drawing_color(scalar_t r, scalar_t g, scalar_t b);
virtual void draw_polygon(int filled, int nb, scalar_t *x, scalar_t *y);
virtual void write_png(FILE *file);