void on_idle()
    {
        if(m_run.status())
        {
            if(m_cur_angle < 360.0)
            {
                m_cur_angle += m_step.value();
                copy_img_to_img(1, 0);
#ifdef AGG_ACCURATE_TIME
                start_timer();
#endif
                transform_image(m_step.value());
#ifdef AGG_ACCURATE_TIME
                m_time2 += elapsed_time();
#endif
                m_num_steps++;
            }
            else
            {
                m_cur_angle = 0.0;
#ifndef AGG_ACCURATE_TIME
                m_time2 = clock();
#endif
                wait_mode(true);
                m_run.status(false);
            }
            force_redraw();
        }
        else
        {
            wait_mode(true);
        }
    }

    //------------------------------------------------------------------------
    virtual void on_idle() 
    {
        bool redraw = false;
        if(m_rotate_polygon.status())
        {
            m_polygon_angle.value(m_polygon_angle.value() + 0.5);
            if(m_polygon_angle.value() >= 180.0) 
            {
                m_polygon_angle.value(m_polygon_angle.value() - 360.0);
            }
            redraw = true;
        }

        if(m_rotate_pattern.status())
        {
            m_pattern_angle.value(m_pattern_angle.value() - 0.5);
            if(m_pattern_angle.value() <= -180.0) 
            {
                m_pattern_angle.value(m_pattern_angle.value() + 360.0);
            }
            generate_pattern();
            redraw = true;
        }

        if(redraw) force_redraw();

    }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_step  (115,  5,    400, 11,     !flip_y),
        m_radius(115,  5+15, 400, 11+15,  !flip_y),
        m_filters(0.0, 0.0, 110.0, 210.0, !flip_y),
        m_normalize  (8.0, 215.0, "Normalize Filter", !flip_y),
        m_run        (8.0, 245.0, "RUN Test!", !flip_y),
        m_single_step(8.0, 230.0, "Single Step", !flip_y),
        m_refresh    (8.0, 265.0, "Refresh", !flip_y),
        m_cur_angle(0.0),
        m_cur_filter(1),
        m_num_steps(0),
        m_num_pix(0.0),
        m_time1(0),
        m_time2(0)
    {
        add_ctrl(m_radius);
        add_ctrl(m_step);
        add_ctrl(m_filters);
        add_ctrl(m_run);
        add_ctrl(m_single_step);
        add_ctrl(m_normalize);
        add_ctrl(m_refresh);
        m_run.text_size(7.5);
        m_single_step.text_size(7.5);
        m_normalize.text_size(7.5);
        m_refresh.text_size(7.5);
        m_normalize.status(true);

        m_radius.label("Filter Radius=%.3f");
        m_step.label("Step=%3.2f");
        m_radius.range(2.0, 8.0);
        m_radius.value(4.0);
        m_step.range(1.0, 10.0);
        m_step.value(5.0);

        m_filters.add_item("simple (NN)");
        m_filters.add_item("bilinear");
        m_filters.add_item("bicubic");
        m_filters.add_item("spline16");
        m_filters.add_item("spline36");
        m_filters.add_item("hanning");
        m_filters.add_item("hamming");
        m_filters.add_item("hermite");
        m_filters.add_item("kaiser");
        m_filters.add_item("quadric");
        m_filters.add_item("catrom");
        m_filters.add_item("gaussian");
        m_filters.add_item("bessel");
        m_filters.add_item("mitchell");
        m_filters.add_item("sinc");
        m_filters.add_item("lanczos");
        m_filters.add_item("blackman");
        m_filters.cur_item(1);

        m_filters.border_width(0, 0);
        m_filters.background_color(agg::rgba(0.0, 0.0, 0.0, 0.1));
        m_filters.text_size(6.0);
        m_filters.text_thickness(0.85);
    }

    //------------------------------------------------------------------------
    virtual void on_idle() 
    {
        bool redraw = false;
        if(m_rotate_polygon.status())
        {
            m_polygon_angle.value(m_polygon_angle.value() + 0.5);
            if(m_polygon_angle.value() >= 180.0) 
            {
                m_polygon_angle.value(m_polygon_angle.value() - 360.0);
            }
            redraw = true;
        }

        if(m_rotate_image.status())
        {
            m_image_angle.value(m_image_angle.value() + 0.5);
            if(m_image_angle.value() >= 180.0) 
            {
                m_image_angle.value(m_image_angle.value() - 360.0);
            }
            redraw = true;
        }

        if(redraw) force_redraw();

    }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_feng(),
        m_fman(m_feng),
        m_poly1(6, 5.0),
        m_poly2(6, 5.0),
        m_num_points      (5.0, 5.0, 340.0, 12.0, !flip_y),
        m_fixed_len       (350, 5.0,  "Fixed Length", !flip_y),
        m_preserve_x_scale(465, 5.0,  "Preserve X scale", !flip_y),
        m_animate         (350, 25.0, "Animate", !flip_y),
        m_prev_animate(false)
    {
        add_ctrl(m_fixed_len);
        add_ctrl(m_preserve_x_scale);
        add_ctrl(m_animate);
        m_fixed_len.status(true);
        m_preserve_x_scale.status(true);
        m_num_points.range(10.0, 400.0);
        m_num_points.value(200.0);
        m_num_points.label("Number of intermediate Points = %.3f");
        add_ctrl(m_num_points);

        m_poly1.close(false);
        m_poly2.close(false);
    }

 //------------------------------------------------------------------------
 virtual void on_ctrl_change() {
   if (m_rotate_polygon.status() || m_rotate_image.status()) {
     wait_mode(false);
   } else {
     wait_mode(true);
   }
   force_redraw();
 }

 virtual void on_ctrl_change()
 {
     if(m_reset.status())
     {
         on_init();
         m_reset.status(false);
         force_redraw();
     }
 }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_rotate(10,  3, "Rotate", !flip_y),
        m_even_odd(60, 3, "Even-Odd", !flip_y),
        m_draft(130, 3, "Draft", !flip_y),
        m_roundoff(175, 3, "Roundoff", !flip_y),
        m_angle_delta(10, 21, 250-10, 27, !flip_y),
        m_redraw_flag(true)
    {
        m_angle_delta.label("Step=%4.3f degree");

        g_attr[g_npaths++] = path_attributes(g_path.start_new_path(),
                                             agg::rgba8(255, 255, 0),
                                             agg::rgba8(0,   0,   0),
                                             1.0);

        g_path.concat_poly(g_poly_bulb, AGG_POLY_SIZE(g_poly_bulb), true);

        g_attr[g_npaths++] = path_attributes(g_path.start_new_path(),
                                             agg::rgba8(255,  255, 200),
                                             agg::rgba8(90,   0,   0),
                                             0.7);

        g_path.concat_poly(g_poly_beam1, AGG_POLY_SIZE(g_poly_beam1), true); 
        g_path.concat_poly(g_poly_beam2, AGG_POLY_SIZE(g_poly_beam2), true); 
        g_path.concat_poly(g_poly_beam3, AGG_POLY_SIZE(g_poly_beam3), true); 
        g_path.concat_poly(g_poly_beam4, AGG_POLY_SIZE(g_poly_beam4), true); 

        g_attr[g_npaths++] = path_attributes(g_path.start_new_path(),
                                             agg::rgba8(0, 0, 0),
                                             agg::rgba8(0, 0, 0),
                                             0.0);

        g_path.concat_poly(g_poly_fig1, AGG_POLY_SIZE(g_poly_fig1), true); 
        g_path.concat_poly(g_poly_fig2, AGG_POLY_SIZE(g_poly_fig2), true); 
        g_path.concat_poly(g_poly_fig3, AGG_POLY_SIZE(g_poly_fig3), true); 
        g_path.concat_poly(g_poly_fig4, AGG_POLY_SIZE(g_poly_fig4), true); 
        g_path.concat_poly(g_poly_fig5, AGG_POLY_SIZE(g_poly_fig5), true); 
        g_path.concat_poly(g_poly_fig6, AGG_POLY_SIZE(g_poly_fig6), true); 

        m_rotate.text_size(7);
        m_even_odd.text_size(7);
        m_draft.text_size(7);
        m_roundoff.text_size(7);
        add_ctrl(m_rotate);
        add_ctrl(m_even_odd);
        add_ctrl(m_draft);
        add_ctrl(m_roundoff);
        add_ctrl(m_angle_delta);
        m_angle_delta.value(0.01);
    }

    //------------------------------------------------------------------------
    virtual void on_ctrl_change() 
    {
        if(m_rotate_polygon.status() || m_rotate_pattern.status())
        {
            wait_mode(false);
        }
        else
        {
            wait_mode(true);
        }

        generate_pattern();
        force_redraw();
    }

    virtual void on_draw()
    {
        typedef agg::gamma_lut<agg::int8u, agg::int8u, 8, 8> gamma_lut_type;
        typedef agg::pixfmt_bgr24_gamma<gamma_lut_type> pixfmt;
        typedef agg::renderer_base<pixfmt> renderer_base;
        typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;

        gamma_lut_type gamma(m_gamma.value());
        pixfmt pixf(rbuf_window(), gamma);
        renderer_base rb(pixf);
        renderer_solid ren(rb);

        rb.clear(m_white_on_black.status() ? agg::rgba(0,0,0) : agg::rgba(1,1,1));

        agg::rasterizer_scanline_aa<> ras;
        agg::scanline_p8 sl;

        agg::ellipse e;

        // Render two "control" circles
        ren.color(agg::rgba8(127,127,127));
        e.init(m_x[0], m_y[0], 3, 3, 16);
        ras.add_path(e);
        agg::render_scanlines(ras, sl, ren);
        e.init(m_x[1], m_y[1], 3, 3, 16);
        ras.add_path(e);
        agg::render_scanlines(ras, sl, ren);

        double d = m_offset.value();

        // Creating a rounded rectangle
        agg::rounded_rect r(m_x[0]+d, m_y[0]+d, m_x[1]+d, m_y[1]+d, m_radius.value());
        r.normalize_radius();

        // Drawing as an outline
        agg::conv_stroke<agg::rounded_rect> p(r);
        p.width(1.0);
        ras.add_path(p);
        ren.color(m_white_on_black.status() ? agg::rgba(1,1,1) : agg::rgba(0,0,0));
        agg::render_scanlines(ras, sl, ren);

        ras.gamma(agg::gamma_none());

        // Render the controls
        agg::render_ctrl(ras, sl, rb, m_radius);
        agg::render_ctrl(ras, sl, rb, m_gamma);
        agg::render_ctrl(ras, sl, rb, m_offset);
        agg::render_ctrl(ras, sl, rb, m_white_on_black);
    }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_type(-1, -1, -1, -1, !flip_y),
        m_width(110+80, 8.0, 110+200.0+80, 8.0 + 7.0, !flip_y),
        m_benchmark(110+200+80+8, 8.0-2.0, "Benchmark", !flip_y),
        m_draw_nodes(110+200+80+8, 8.0-2.0+15.0, "Draw Nodes", !flip_y),
        m_draw_edges(200+200+80+8, 8.0-2.0+15.0, "Draw Edges", !flip_y),
        m_draft(200+200+80+8, 8.0-2.0, "Draft Mode", !flip_y),
        m_translucent(110+80, 8.0-2.0+15.0, "Translucent Mode", !flip_y),
        m_graph(200, 100),
        m_gradient_colors(),
        m_draw(3)
    {
        add_ctrl(m_type);
        m_type.text_size(8.0);
        m_type.add_item("Solid lines");
        m_type.add_item("Bezier curves");
        m_type.add_item("Dashed curves");
        m_type.add_item("Poygons AA");
        m_type.add_item("Poygons Bin");
        m_type.cur_item(0);

        add_ctrl(m_width);
        m_width.num_steps(20);
        m_width.range(0.0, 5.0);
        m_width.value(2.0);
        m_width.label("Width=%1.2f");

        m_benchmark.text_size(8.0);
        m_draw_nodes.text_size(8.0);
        m_draft.text_size(8.0);
        m_draw_nodes.status(true);
        m_draw_edges.status(true);
        add_ctrl(m_benchmark);
        add_ctrl(m_draw_nodes);
        add_ctrl(m_draw_edges);
        add_ctrl(m_draft);
        add_ctrl(m_translucent);

        agg::rgba c1(1, 1, 0, 0.25);
        agg::rgba c2(0, 0, 1);

        int i;
        for(i = 0; i < 256; i++)
        {
            m_gradient_colors[i] = c1.gradient(c2, double(i) / 255.0);
        }
    }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_idx(-1),
        m_gamma(130 + 10.0, 10.0 + 4.0, 130 + 150.0, 10.0 + 8.0 + 4.0, !flip_y),
        m_alpha(130 + 150.0 + 10.0, 10.0 + 4.0, 500 - 10.0, 10.0 + 8.0 + 4.0, !flip_y),
        m_test(130 + 10.0, 10.0 + 4.0 + 16.0,    "Test Performance", !flip_y)
    {
        m_x[0] = 100 + 120; m_y[0] = 60;
        m_x[1] = 369 + 120; m_y[1] = 170;
        m_x[2] = 143 + 120; m_y[2] = 310;

        add_ctrl(m_gamma);
        m_gamma.range(0.0, 1.0);
        m_gamma.value(0.5);
        m_gamma.label("Gamma=%1.2f");
        m_gamma.no_transform();

        add_ctrl(m_alpha);
        m_alpha.range(0.0, 1.0);
        m_alpha.value(1.0);
        m_alpha.label("Alpha=%1.2f");
        m_alpha.no_transform();

        add_ctrl(m_test);
        m_test.no_transform();
    }

    //------------------------------------------------------------------------
    void draw_dashes_draft()
    {
        pixfmt pixf(rbuf_window());
        base_renderer rb(pixf);
        primitives_renderer prim(rb);
        outline_rasterizer ras(prim);

        int i;
        for(i = 0; i < m_graph.get_num_edges(); i++)
        {
            graph::edge e  = m_graph.get_edge(i);
            graph::node n1 = m_graph.get_node(e.node1, width(), height());
            graph::node n2 = m_graph.get_node(e.node2, width(), height());
            curve c(n1.x, n1.y, n2.x, n2.y);
            dash_stroke_draft<curve> s(c, 6.0, 3.0, m_width.value());

            int r = rand() & 0x7F;
            int g = rand() & 0x7F;
            int b = rand() & 0x7F;
            int a = 255;
            if(m_translucent.status()) a = 80;
            prim.line_color(agg::srgba8(r, g, b, a));
            ras.add_path(s);
        }
    }

    //------------------------------------------------------------------------
    void draw_scene(scanline_rasterizer& ras, 
                    solid_renderer& solid,
                    draft_renderer& draft)
    {
        ras.gamma(agg::gamma_none());
        srand(100);
        if(m_draw_nodes.status())
        {
            if(m_draft.status())
            {
                draw_nodes_draft();
            }
            else
            {
                draw_nodes_fine(ras);
            }
        }

        if(m_draw_edges.status())
        {
            if(m_draft.status()) 
            {
                switch(m_type.cur_item())
                {
                case 0: draw_lines_draft();    break;
                case 1: draw_curves_draft();   break;
                case 2: draw_dashes_draft();   break;
                }
            }
            else
            {
                switch(m_type.cur_item())
                {
                case 0: draw_lines_fine(ras, solid, draft);  break;
                case 1: draw_curves_fine(ras, solid, draft); break;
                case 2: draw_dashes_fine(ras, solid, draft); break;
                case 3: 
                case 4: draw_polygons(ras, solid, draft);    break;
                }
            }
        }
    }

    void on_ctrl_change()
    {
        if(m_single_step.status())
        {
            m_cur_angle += m_step.value();
            copy_img_to_img(1, 0);
            transform_image(m_step.value());
            m_num_steps++;
            force_redraw();
            m_single_step.status(false);
        }

        if(m_run.status())
        {
#ifdef AGG_ACCURATE_TIME
            start_timer();
            m_time1 = m_time2 = elapsed_time();
#else
            m_time1 = m_time2 = clock();
#endif
            m_num_pix = 0.0;
            wait_mode(false);
        }
        if(m_refresh.status() || m_filters.cur_item() != m_cur_filter)
        {
#ifdef AGG_ACCURATE_TIME
            start_timer();
            m_time1 = m_time2 = 0;
#else
            m_time1 = m_time2 = clock();
#endif
            m_num_pix = 0.0;
            m_cur_angle = 0.0;
            copy_img_to_img(1, 2);
            transform_image(0.0);
            m_refresh.status(false);
            m_cur_filter = m_filters.cur_item();
            m_num_steps = 0;
            force_redraw();
        }
    }

 virtual void on_ctrl_change()
 {
     if(m_animate.status() != m_prev_animate)
     {
         if(m_animate.status())
         {
             on_init();
             int i;
             for(i = 0; i < 6; i++)
             {
                 m_dx[i] = ((rand() % 1000) - 500) * 0.01;
                 m_dy[i] = ((rand() % 1000) - 500) * 0.01;
             }
             wait_mode(false);
         }
         else
         {
             wait_mode(true);
         }
         m_prev_animate = m_animate.status();
     }
 }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_idx(-1),
        m_cap(10.0, 10.0, 130.0, 80.0, !flip_y),
        m_width(130 + 10.0, 10.0 + 4.0, 130 + 150.0, 10.0 + 8.0 + 4.0, !flip_y),
        m_smooth(130 + 150.0 + 10.0, 10.0 + 4.0, 500 - 10.0, 10.0 + 8.0 + 4.0, !flip_y),
        m_close(130 + 10.0, 10.0 + 4.0 + 16.0,    "Close Polygons", !flip_y),
        m_even_odd(130 + 150.0 + 10.0, 10.0 + 4.0 + 16.0, "Even-Odd Fill", !flip_y)
    {
        m_x[0] = 57  + 100; m_y[0] = 60;
        m_x[1] = 369 + 100; m_y[1] = 170;
        m_x[2] = 143 + 100; m_y[2] = 310;

        add_ctrl(m_cap);
        m_cap.add_item("Butt Cap");
        m_cap.add_item("Square Cap");
        m_cap.add_item("Round Cap");
        m_cap.cur_item(0);
        m_cap.no_transform();

        add_ctrl(m_width);
        m_width.range(0.0, 10.0);
        m_width.value(3.0);
        m_width.label("Width=%1.2f");
        m_width.no_transform();

        add_ctrl(m_smooth);
        m_smooth.range(0.0, 2.0);
        m_smooth.value(1.0);
        m_smooth.label("Smooth=%1.2f");
        m_smooth.no_transform();

        add_ctrl(m_close);
        m_close.no_transform();

        add_ctrl(m_even_odd);
        m_even_odd.no_transform();
    }

    the_application(agg::pix_format_e format, bool flip_y) :
        agg::platform_support(format, flip_y),
        m_width_slider(5, 5, 150, 12, !flip_y),
        m_scanline(160, 5, "Use Scanline Rasterizer", !flip_y)
    {
        parse_lion();
        add_ctrl(m_width_slider);
        m_width_slider.no_transform();
        m_width_slider.range(0.0, 4.0);
        m_width_slider.value(1.0);
        m_width_slider.label("Width %3.2f");

        add_ctrl(m_scanline);
        m_scanline.no_transform();
    }

    virtual void on_draw()
    {
        int width = rbuf_window().width();
        int height = rbuf_window().height();

        typedef agg::renderer_base<pixfmt> renderer_base;
        typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;

        pixfmt pixf(rbuf_window());
        renderer_base rb(pixf);
        renderer_solid r(rb);
        rb.clear(agg::rgba(1,1,1));

        agg::trans_affine mtx;
        mtx *= agg::trans_affine_translation(-g_base_dx, -g_base_dy);
        mtx *= agg::trans_affine_scaling(g_scale, g_scale);
        mtx *= agg::trans_affine_rotation(g_angle + agg::pi);
        mtx *= agg::trans_affine_skewing(g_skew_x/1000.0, g_skew_y/1000.0);
        mtx *= agg::trans_affine_translation(width/2, height/2);

        if(m_scanline.status())
        {
            agg::conv_stroke<agg::path_storage> stroke(g_path);
            stroke.width(m_width_slider.value());
            stroke.line_join(agg::round_join);
            agg::conv_transform<agg::conv_stroke<agg::path_storage> > trans(stroke, mtx);
            agg::render_all_paths(g_rasterizer, g_scanline, r, trans, g_colors, g_path_idx, g_npaths);
        }
        else
        {
            typedef agg::renderer_outline_aa<renderer_base> renderer_type;
            typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type;

            double w = m_width_slider.value() * mtx.scale();

            agg::line_profile_aa profile(w, agg::gamma_none());
            renderer_type ren(rb, profile);
            rasterizer_type ras(ren);

            agg::conv_transform<agg::path_storage> trans(g_path, mtx);

            ras.render_all_paths(trans, g_colors, g_path_idx, g_npaths);
        }


        agg::render_ctrl(g_rasterizer, g_scanline, rb, m_width_slider);
        agg::render_ctrl(g_rasterizer, g_scanline, rb, m_scanline);
    }

    void render_edge_fine(scanline_rasterizer& ras, 
                          solid_renderer& ren_fine,
                          draft_renderer& ren_draft,
                          Source& src)
    {
        double x, y;
        switch(m_draw)
        {
            case 0:
                src.rewind(0);
                while(!agg::is_stop(src.vertex(&x, &y)));
            break;

            case 1:
                ras.reset();
                ras.add_path(src);
            break;

            case 2:
                ras.reset();
                ras.add_path(src);
                ras.sort();
            break;

            case 3:
            {
                int r = rand() & 0x7F;
                int g = rand() & 0x7F;
                int b = rand() & 0x7F;
                int a = 255;
                if(m_translucent.status()) a = 80;
                ras.add_path(src);

                if(m_type.cur_item() < 4)
                {
                    ren_fine.color(agg::srgba8(r, g, b, a));
                    agg::render_scanlines(ras, m_sl, ren_fine);
                }
                else
                {
                    ren_draft.color(agg::srgba8(r, g, b, a));
                    agg::render_scanlines(ras, m_sl, ren_draft);
                }
            }
            break;
        }
    }