252 lines
6.5 KiB
C++
252 lines
6.5 KiB
C++
#include <stdio.h>
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#include <stdlib.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_gsv_text.h"
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#include "agg_conv_stroke.h"
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#include "agg_path_storage.h"
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#include "ctrl/agg_gamma_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_RGB24
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//#define AGG_BGR96
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//#define AGG_BGRA32
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//#define AGG_RGBA32
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//#define AGG_ARGB32
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//#define AGG_ABGR32
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//#define AGG_BGRA128
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//#define AGG_RGB565
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//#define AGG_RGB555
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#include "pixel_formats.h"
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enum flip_y_e { flip_y = true };
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agg::gamma_ctrl<color_type> g_ctrl(10.0, 10.0, 300.0, 200.0, !flip_y);
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void read_gamma(const char* fname)
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{
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FILE* fd = fopen(fname, "rb");
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if(fd)
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{
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char buf[32];
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double kx1, ky1, kx2, ky2;
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fgets(buf, 30, fd); kx1 = atof(buf);
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fgets(buf, 30, fd); ky1 = atof(buf);
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fgets(buf, 30, fd); kx2 = atof(buf);
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fgets(buf, 30, fd); ky2 = atof(buf);
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g_ctrl.values(kx1, ky1, kx2, ky2);
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fclose(fd);
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}
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}
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void write_gamma_bin(const char* fname)
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{
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const unsigned char* gamma = g_ctrl.gamma();
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FILE* fd = fopen(fname, "wb");
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if(fd)
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{
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fwrite(gamma, 256, 1, fd);
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fclose(fd);
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}
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}
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void write_gamma_txt(const char* fname)
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{
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const unsigned char* gamma = g_ctrl.gamma();
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FILE* fd = fopen(fname, "w");
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if(fd)
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{
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double kx1, ky1, kx2, ky2;
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g_ctrl.values(&kx1, &ky1, &kx2, &ky2);
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fprintf(fd, "%5.3f\n", kx1);
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fprintf(fd, "%5.3f\n", ky1);
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fprintf(fd, "%5.3f\n", kx2);
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fprintf(fd, "%5.3f\n", ky2);
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for(int i = 0; i < 16; i++)
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{
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for(int j = 0; j < 16; j++)
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{
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fprintf(fd, "%3d,", gamma[i*16 + j]);
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}
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fprintf(fd, "\n");
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}
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fclose(fd);
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}
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}
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class the_application : public agg::platform_support
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{
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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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{
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add_ctrl(g_ctrl);
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}
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virtual void on_init()
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{
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read_gamma(full_file_name("gamma.txt"));
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}
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virtual ~the_application()
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{
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write_gamma_txt(full_file_name("gamma.txt"));
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write_gamma_bin(full_file_name("gamma.bin"));
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}
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virtual void on_draw()
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{
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double ewidth = initial_width() / 2 - 10;
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double ecenter = initial_width() / 2;
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typedef agg::renderer_base<pixfmt> ren_base;
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pixfmt pixf(rbuf_window());
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ren_base rb(pixf);
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agg::srgba8 color;
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rb.clear(agg::rgba(1, 1, 1));
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g_ctrl.text_size(10.0, 12.0);
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agg::rasterizer_scanline_aa<> ras;
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agg::scanline_p8 sl;
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agg::render_ctrl(ras, sl, rb, g_ctrl);
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ras.gamma(g_ctrl);
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agg::ellipse ellipse;
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agg::conv_stroke<agg::ellipse> poly(ellipse);
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agg::conv_transform<agg::conv_stroke<agg::ellipse> > tpoly(poly, trans_affine_resizing());
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color = agg::srgba8(0, 0, 0);
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ellipse.init(ecenter, 220, ewidth, 15, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 220, 11, 11, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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color = agg::srgba8(127, 127, 127);
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ellipse.init(ecenter, 260, ewidth, 15, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 260, 11, 11, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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color = agg::srgba8(192, 192, 192);
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ellipse.init(ecenter, 300, ewidth, 15, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 300, 11, 11, 100);
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poly.width(2.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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color = agg::rgba(0.0, 0.0, 0.4);
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ellipse.init(ecenter, 340, ewidth, 15.5, 100);
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poly.width(1.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 340, 10.5, 10.5, 100);
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poly.width(1.0);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 380, ewidth, 15.5, 100);
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poly.width(0.4);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 380, 10.5, 10.5, 100);
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poly.width(0.4);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 420, ewidth, 15.5, 100);
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poly.width(0.1);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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ellipse.init(ecenter, 420, 10.5, 10.5, 100);
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poly.width(0.1);
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ras.add_path(tpoly, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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agg::trans_affine mtx;
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mtx *= agg::trans_affine_skewing(0.15, 0.0);
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mtx *= trans_affine_resizing();
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agg::gsv_text text;
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agg::gsv_text_outline<agg::trans_affine> text1(text, mtx);
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text.text("Text 2345");
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text.size(50, 20);
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text1.width(2.0);
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text.start_point(320, 10);
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color = agg::rgba(0.0, 0.5, 0.0);
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ras.add_path(text1, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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color = agg::rgba(0.5, 0.0, 0.0);
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agg::path_storage path;
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path.move_to(30, -1.0);
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path.line_to(60, 0.0);
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path.line_to(30, 1.0);
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path.move_to(27, -1.0);
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path.line_to(10, 0.0);
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path.line_to(27, 1.0);
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agg::conv_transform<agg::path_storage> trans(path, mtx);
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for(int i = 0; i < 35; i++)
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{
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mtx.reset();
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mtx *= agg::trans_affine_rotation(double(i) / 35.0 * agg::pi * 2.0);
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mtx *= agg::trans_affine_translation(400, 130);
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mtx *= trans_affine_resizing();
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ras.add_path(trans, 0);
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agg::render_scanlines_aa_solid(ras, sl, rb, color);
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}
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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("Anti-Aliasing Gamma Correction");
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if(app.init(500, 400, agg::window_resize))
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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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