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#include <stdio.h>
#include "agg_trans_affine.h"
#include "agg_conv_stroke.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_rendering_buffer.h"
#include "agg_scanline_u.h"
#include "agg_renderer_scanline.h"
#include "agg_gamma_lut.h"
#include "ctrl/agg_slider_ctrl.h"
#include "platform/agg_platform_support.h"
#define AGG_BGR24
//#define AGG_RGB24
//#define AGG_BGRA32
//#define AGG_RGBA32
//#define AGG_ARGB32
//#define AGG_ABGR32
//#define AGG_RGB565
//#define AGG_RGB555
#include "pixel_formats.h"
enum flip_y_e { flip_y = true };
class the_application : public agg::platform_support
{
agg::slider_ctrl<agg::rgba8> m_thickness;
agg::slider_ctrl<agg::rgba8> m_gamma;
agg::slider_ctrl<agg::rgba8> m_contrast;
double m_rx;
double m_ry;
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_thickness(5, 5, 400-5, 11, !flip_y),
m_gamma (5, 5+15, 400-5, 11+15, !flip_y),
m_contrast (5, 5+30, 400-5, 11+30, !flip_y)
{
add_ctrl(m_thickness);
add_ctrl(m_gamma);
add_ctrl(m_contrast);
m_thickness.label("Thickness=%3.2f");
m_gamma.label("Gamma=%3.2f");
m_contrast.label("Contrast");
m_thickness.range(0.0, 3.0);
m_gamma.range(0.5, 3.0);
m_contrast.range(0.0, 1.0);
m_thickness.value(1.0);
m_gamma.value(1.0);
m_contrast.value(1.0);
}
virtual void on_init()
{
m_rx = width() / 3.0;
m_ry = height() / 3.0;
}
virtual void on_draw()
{
typedef agg::gamma_lut<agg::int8u, agg::int8u, 8, 8> gamma_type;
typedef pixfmt_gamma<gamma_type> pixfmt_type;
typedef agg::renderer_base<pixfmt_type> ren_base;
double g = m_gamma.value();
gamma_type gamma(g);
pixfmt_type pixf(rbuf_window(), gamma);
ren_base renb(pixf);
renb.clear(agg::rgba(1, 1, 1));
double dark = 1.0 - m_contrast.value();
double light = m_contrast.value();
renb.copy_bar(0,0,int(width())/2, int(height()), agg::rgba(dark,dark,dark));
renb.copy_bar(int(width())/2+1,0, int(width()), int(height()), agg::rgba(light,light,light));
renb.copy_bar(0,int(height())/2+1, int(width()), int(height()), agg::rgba(1.0,dark,dark));
agg::rasterizer_scanline_aa<> ras;
agg::scanline_u8 sl;
agg::path_storage path;
unsigned i;
double x = (width() - 256.0) / 2.0;
double y = 50.0;
path.remove_all();
agg::gamma_power gp(g);
for(i = 0; i < 256; i++)
{
double v = double(i) / 255.0;
double gval = gp(v);
double dy = gval * 255.0;
if(i == 0) path.move_to(x + i, y + dy);
else path.line_to(x + i, y + dy);
}
agg::conv_stroke<agg::path_storage> gpoly(path);
gpoly.width(2.0);
ras.reset();
ras.add_path(gpoly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(80,127,80));
agg::ellipse ell(width() / 2, height() / 2, m_rx, m_ry, 150);
agg::conv_stroke<agg::ellipse> poly(ell);
poly.width(m_thickness.value());
ras.reset();
ras.add_path(poly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(255,0,0));
ell.init(width() / 2, height() / 2, m_rx-5.0, m_ry-5.0, 150);
ras.reset();
ras.add_path(poly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(0,255,0));
ell.init(width() / 2, height() / 2, m_rx-10.0, m_ry-10.0, 150);
ras.reset();
ras.add_path(poly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(0,0,255));
ell.init(width() / 2, height() / 2, m_rx-15.0, m_ry-15.0, 150);
ras.reset();
ras.add_path(poly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(0,0,0));
ell.init(width() / 2, height() / 2, m_rx-20.0, m_ry-20.0, 150);
ras.reset();
ras.add_path(poly);
agg::render_scanlines_aa_solid(ras, sl, renb, agg::rgba8(255,255,255));
agg::render_ctrl(ras, sl, renb, m_thickness);
agg::render_ctrl(ras, sl, renb, m_gamma);
agg::render_ctrl(ras, sl, renb, m_contrast);
}
virtual void on_mouse_button_down(int x, int y, unsigned flags)
{
if(flags & agg::mouse_left)
{
m_rx = fabs(width()/2 - x);
m_ry = fabs(height()/2 - y);
force_redraw();
}
}
virtual void on_mouse_move(int x, int y, unsigned flags)
{
on_mouse_button_down(x, y, flags);
}
};
int agg_main(int argc, char* argv[])
{
the_application app(pix_format, flip_y);
app.caption("AGG Example. Thin red ellipse");
if(app.init(400, 320, 0))
{
return app.run();
}
return 1;
}
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