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#include "agg_basics.h"
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_scanline_p.h"
#include "agg_renderer_scanline.h"
#include "agg_ellipse.h"
#include "agg_pixfmt_gray.h"
#include "agg_pixfmt_rgb.h"
#include "ctrl/agg_slider_ctrl.h"
#include "platform/agg_platform_support.h"
enum flip_y_e { flip_y = true };
class the_application : public agg::platform_support
{
agg::slider_ctrl<agg::rgba8> m_alpha;
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_alpha(5, 5, 320-5, 10+5, !flip_y)
{
m_alpha.label("Alpha=%1.0f");
m_alpha.range(0, 255);
m_alpha.value(255);
add_ctrl(m_alpha);
}
virtual void on_draw()
{
agg::pixfmt_bgr24 pf(rbuf_window());
typedef agg::pixfmt_alpha_blend_gray<agg::blender_gray8, agg::rendering_buffer, 3, 2> pixfmt_gray8_bgr24r;
typedef agg::pixfmt_alpha_blend_gray<agg::blender_gray8, agg::rendering_buffer, 3, 1> pixfmt_gray8_bgr24g;
typedef agg::pixfmt_alpha_blend_gray<agg::blender_gray8, agg::rendering_buffer, 3, 0> pixfmt_gray8_bgr24b;
pixfmt_gray8_bgr24r pfr(rbuf_window());
pixfmt_gray8_bgr24g pfg(rbuf_window());
pixfmt_gray8_bgr24b pfb(rbuf_window());
agg::renderer_base<agg::pixfmt_bgr24> rbase(pf);
agg::renderer_base<pixfmt_gray8_bgr24r> rbr(pfr);
agg::renderer_base<pixfmt_gray8_bgr24g> rbg(pfg);
agg::renderer_base<pixfmt_gray8_bgr24b> rbb(pfb);
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
rbase.clear(agg::rgba(1,1,1));
agg::ellipse er(width() / 2 - 0.87*50, height() / 2 - 0.5*50, 100, 100, 100);
ras.add_path(er);
agg::render_scanlines_aa_solid(ras, sl, rbr,
agg::gray8(0, unsigned(m_alpha.value())));
agg::ellipse eg(width() / 2 + 0.87*50, height() / 2 - 0.5*50, 100, 100, 100);
ras.add_path(eg);
agg::render_scanlines_aa_solid(ras, sl, rbg,
agg::gray8(0, unsigned(m_alpha.value())));
agg::ellipse eb(width() / 2, height() / 2 + 50, 100, 100, 100);
ras.add_path(eb);
agg::render_scanlines_aa_solid(ras, sl, rbb,
agg::gray8(0, unsigned(m_alpha.value())));
agg::render_ctrl(ras, sl, rbase, m_alpha);
}
};
int agg_main(int argc, char* argv[])
{
the_application app(agg::pix_format_bgr24, flip_y);
app.caption("AGG Example. Component Rendering");
if(app.init(320, 320, 0))
{
return app.run();
}
return 1;
}
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