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#include <stdio.h>
#include <stdlib.h>
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_scanline_p.h"
#include "agg_renderer_scanline.h"
#include "agg_gsv_text.h"
#include "agg_conv_stroke.h"
#include "agg_path_storage.h"
#include "ctrl/agg_gamma_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 };
agg::gamma_ctrl<agg::rgba8> g_ctrl(10.0, 10.0, 300.0, 200.0, !flip_y);
void read_gamma(const char* fname)
{
FILE* fd = fopen(fname, "rb");
if(fd)
{
char buf[32];
double kx1, ky1, kx2, ky2;
fgets(buf, 30, fd); kx1 = atof(buf);
fgets(buf, 30, fd); ky1 = atof(buf);
fgets(buf, 30, fd); kx2 = atof(buf);
fgets(buf, 30, fd); ky2 = atof(buf);
g_ctrl.values(kx1, ky1, kx2, ky2);
fclose(fd);
}
}
void write_gamma_bin(const char* fname)
{
const unsigned char* gamma = g_ctrl.gamma();
FILE* fd = fopen(fname, "wb");
if(fd)
{
fwrite(gamma, 256, 1, fd);
fclose(fd);
}
}
void write_gamma_txt(const char* fname)
{
const unsigned char* gamma = g_ctrl.gamma();
FILE* fd = fopen(fname, "w");
if(fd)
{
double kx1, ky1, kx2, ky2;
g_ctrl.values(&kx1, &ky1, &kx2, &ky2);
fprintf(fd, "%5.3f\n", kx1);
fprintf(fd, "%5.3f\n", ky1);
fprintf(fd, "%5.3f\n", kx2);
fprintf(fd, "%5.3f\n", ky2);
for(int i = 0; i < 16; i++)
{
for(int j = 0; j < 16; j++)
{
fprintf(fd, "%3d,", gamma[i*16 + j]);
}
fprintf(fd, "\n");
}
fclose(fd);
}
}
class the_application : public agg::platform_support
{
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y)
{
add_ctrl(g_ctrl);
}
virtual void on_init()
{
read_gamma(full_file_name("gamma.txt"));
}
virtual ~the_application()
{
write_gamma_txt(full_file_name("gamma.txt"));
write_gamma_bin(full_file_name("gamma.bin"));
}
virtual void on_draw()
{
double ewidth = initial_width() / 2 - 10;
double ecenter = initial_width() / 2;
typedef agg::renderer_base<pixfmt> ren_base;
pixfmt pixf(rbuf_window());
ren_base rb(pixf);
agg::rgba8 color;
rb.clear(agg::rgba(1, 1, 1));
g_ctrl.text_size(10.0, 12.0);
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
agg::render_ctrl(ras, sl, rb, g_ctrl);
ras.gamma(g_ctrl);
agg::ellipse ellipse;
agg::conv_stroke<agg::ellipse> poly(ellipse);
agg::conv_transform<agg::conv_stroke<agg::ellipse> > tpoly(poly, trans_affine_resizing());
color = agg::rgba8(0, 0, 0);
ellipse.init(ecenter, 220, ewidth, 15, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 220, 11, 11, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
color = agg::rgba8(127, 127, 127);
ellipse.init(ecenter, 260, ewidth, 15, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 260, 11, 11, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
color = agg::rgba8(192, 192, 192);
ellipse.init(ecenter, 300, ewidth, 15, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 300, 11, 11, 100);
poly.width(2.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
color = agg::rgba(0.0, 0.0, 0.4);
ellipse.init(ecenter, 340, ewidth, 15.5, 100);
poly.width(1.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 340, 10.5, 10.5, 100);
poly.width(1.0);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 380, ewidth, 15.5, 100);
poly.width(0.4);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 380, 10.5, 10.5, 100);
poly.width(0.4);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 420, ewidth, 15.5, 100);
poly.width(0.1);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
ellipse.init(ecenter, 420, 10.5, 10.5, 100);
poly.width(0.1);
ras.add_path(tpoly, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
agg::trans_affine mtx;
mtx *= agg::trans_affine_skewing(0.15, 0.0);
mtx *= trans_affine_resizing();
agg::gsv_text text;
agg::gsv_text_outline<agg::trans_affine> text1(text, mtx);
text.text("Text 2345");
text.size(50, 20);
text1.width(2.0);
text.start_point(320, 10);
color = agg::rgba(0.0, 0.5, 0.0);
ras.add_path(text1, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
color = agg::rgba(0.5, 0.0, 0.0);
agg::path_storage path;
path.move_to(30, -1.0);
path.line_to(60, 0.0);
path.line_to(30, 1.0);
path.move_to(27, -1.0);
path.line_to(10, 0.0);
path.line_to(27, 1.0);
agg::conv_transform<agg::path_storage> trans(path, mtx);
for(int i = 0; i < 35; i++)
{
mtx.reset();
mtx *= agg::trans_affine_rotation(double(i) / 35.0 * agg::pi * 2.0);
mtx *= agg::trans_affine_translation(400, 130);
mtx *= trans_affine_resizing();
ras.add_path(trans, 0);
agg::render_scanlines_aa_solid(ras, sl, rb, color);
}
}
};
int agg_main(int argc, char* argv[])
{
the_application app(pix_format, flip_y);
app.caption("Anti-Aliasing Gamma Correction");
if(app.init(500, 400, agg::window_resize))
{
return app.run();
}
return 1;
}
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