94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_scanline_p.h"
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#include "agg_renderer_scanline.h"
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#include "agg_ellipse.h"
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#include "agg_pixfmt_gray.h"
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#include "agg_pixfmt_rgb.h"
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#include "ctrl/agg_slider_ctrl.h"
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#include "platform/agg_platform_support.h"
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#define AGG_BGR24
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//#define AGG_BGR48
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//#define AGG_BGR96
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#include "pixel_formats.h"
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typedef agg::blender_gray<gray_type> gray_blender;
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enum flip_y_e { flip_y = true };
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class the_application : public agg::platform_support
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{
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agg::slider_ctrl<color_type> m_alpha;
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public:
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the_application(agg::pix_format_e format, bool flip_y) :
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agg::platform_support(format, flip_y),
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m_alpha(5, 5, 320-5, 10+5, !flip_y)
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{
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m_alpha.label("Alpha=%1.0f");
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m_alpha.range(0, 255);
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m_alpha.value(255);
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add_ctrl(m_alpha);
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}
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virtual void on_draw()
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{
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pixfmt pf(rbuf_window());
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typedef agg::pixfmt_alpha_blend_gray<gray_blender, agg::rendering_buffer, 3, 2> pixfmt_r;
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typedef agg::pixfmt_alpha_blend_gray<gray_blender, agg::rendering_buffer, 3, 1> pixfmt_g;
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typedef agg::pixfmt_alpha_blend_gray<gray_blender, agg::rendering_buffer, 3, 0> pixfmt_b;
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pixfmt_r pfr(rbuf_window());
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pixfmt_g pfg(rbuf_window());
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pixfmt_b pfb(rbuf_window());
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agg::renderer_base<pixfmt> rbase(pf);
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agg::renderer_base<pixfmt_r> rbr(pfr);
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agg::renderer_base<pixfmt_g> rbg(pfg);
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agg::renderer_base<pixfmt_b> rbb(pfb);
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agg::rasterizer_scanline_aa<> ras;
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agg::scanline_p8 sl;
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rbase.clear(agg::rgba(1,1,1));
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agg::ellipse er(width() / 2 - 0.87*50, height() / 2 - 0.5*50, 100, 100, 100);
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ras.add_path(er);
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agg::render_scanlines_aa_solid(ras, sl, rbr,
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gray_type(0, unsigned(m_alpha.value())));
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agg::ellipse eg(width() / 2 + 0.87*50, height() / 2 - 0.5*50, 100, 100, 100);
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ras.add_path(eg);
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agg::render_scanlines_aa_solid(ras, sl, rbg,
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gray_type(0, unsigned(m_alpha.value())));
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agg::ellipse eb(width() / 2, height() / 2 + 50, 100, 100, 100);
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ras.add_path(eb);
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agg::render_scanlines_aa_solid(ras, sl, rbb,
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gray_type(0, unsigned(m_alpha.value())));
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agg::render_ctrl(ras, sl, rbase, m_alpha);
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}
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};
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int agg_main(int argc, char* argv[])
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{
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the_application app(pix_format, flip_y);
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app.caption("AGG Example. Component Rendering");
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if(app.init(320, 320, 0))
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{
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return app.run();
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}
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return 1;
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}
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