the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_ctrl_color(agg::rgba(0, 0.3, 0.5, 0.3)),
m_line1(5),
m_scale_x(5.0, 5.0, 240.0, 12.0, !flip_y),
m_start_x(250.0, 5.0, 495.0, 12.0, !flip_y)
{
m_line1.line_color(m_ctrl_color);
m_line1.xn(0) = 20;
m_line1.yn(0) = 20;
m_line1.xn(1) = 500-20;
m_line1.yn(1) = 500-20;
m_line1.xn(2) = 500-60;
m_line1.yn(2) = 20;
m_line1.xn(3) = 40;
m_line1.yn(3) = 500-40;
m_line1.xn(4) = 100;
m_line1.yn(4) = 300;
m_line1.close(false);
add_ctrl(m_line1);
m_line1.transform(m_scale);
m_scale_x.label("Scale X=%.2f");
m_scale_x.range(0.2, 3.0);
m_scale_x.value(1.0);
add_ctrl(m_scale_x);
m_scale_x.no_transform();
m_start_x.label("Start X=%.2f");
m_start_x.range(0.0, 10.0);
m_start_x.value(0.0);
add_ctrl(m_start_x);
m_start_x.no_transform();
}
void draw_polyline(Rasterizer& ras,
Renderer& ren,
const double* polyline,
int num_points)
{
agg::poly_plain_adaptor<double> vs(polyline, num_points, m_line1.close());
agg::conv_transform<agg::poly_plain_adaptor<double> > trans(vs, m_scale);
ras.add_path(trans);
}