282 lines
7.3 KiB
C++
282 lines
7.3 KiB
C++
#include <math.h>
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#include <stdio.h>
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#include <time.h>
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#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_rasterizer_outline.h"
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#include "agg_scanline_p.h"
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#include "agg_scanline_bin.h"
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#include "agg_renderer_scanline.h"
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#include "agg_renderer_primitives.h"
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#include "ctrl/agg_slider_ctrl.h"
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#include "ctrl/agg_cbox_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_BGR96
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#include "pixel_formats.h"
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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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double m_x[3];
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double m_y[3];
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double m_dx;
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double m_dy;
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int m_idx;
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agg::slider_ctrl<color_type> m_gamma;
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agg::slider_ctrl<color_type> m_alpha;
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agg::cbox_ctrl<color_type> m_test;
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agg::rasterizer_scanline_aa<> m_ras;
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agg::scanline_p8 m_sl_p8;
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agg::scanline_bin m_sl_bin;
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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_idx(-1),
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m_gamma(130 + 10.0, 10.0 + 4.0, 130 + 150.0, 10.0 + 8.0 + 4.0, !flip_y),
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m_alpha(130 + 150.0 + 10.0, 10.0 + 4.0, 500 - 10.0, 10.0 + 8.0 + 4.0, !flip_y),
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m_test(130 + 10.0, 10.0 + 4.0 + 16.0, "Test Performance", !flip_y)
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{
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m_x[0] = 100 + 120; m_y[0] = 60;
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m_x[1] = 369 + 120; m_y[1] = 170;
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m_x[2] = 143 + 120; m_y[2] = 310;
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add_ctrl(m_gamma);
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m_gamma.range(0.0, 1.0);
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m_gamma.value(0.5);
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m_gamma.label("Gamma=%1.2f");
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m_gamma.no_transform();
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add_ctrl(m_alpha);
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m_alpha.range(0.0, 1.0);
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m_alpha.value(1.0);
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m_alpha.label("Alpha=%1.2f");
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m_alpha.no_transform();
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add_ctrl(m_test);
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m_test.no_transform();
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}
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typedef agg::renderer_base<pixfmt> renderer_base;
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typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_aa;
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typedef agg::renderer_scanline_bin_solid<renderer_base> renderer_bin;
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void draw_anti_aliased()
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{
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pixfmt pixf(rbuf_window());
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renderer_base rb(pixf);
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renderer_aa ren_aa(rb);
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agg::path_storage path;
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path.move_to(m_x[0], m_y[0]);
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path.line_to(m_x[1], m_y[1]);
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path.line_to(m_x[2], m_y[2]);
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path.close_polygon();
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ren_aa.color(agg::rgba(0.7, 0.5, 0.1, m_alpha.value()));
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m_ras.gamma(agg::gamma_power(m_gamma.value() * 2.0));
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m_ras.add_path(path);
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agg::render_scanlines(m_ras, m_sl_p8, ren_aa);
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}
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void draw_aliased()
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{
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pixfmt pixf(rbuf_window());
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renderer_base rb(pixf);
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renderer_bin ren_bin(rb);
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agg::path_storage path;
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path.move_to(m_x[0] - 200, m_y[0]);
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path.line_to(m_x[1] - 200, m_y[1]);
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path.line_to(m_x[2] - 200, m_y[2]);
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path.close_polygon();
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ren_bin.color(agg::rgba(0.1, 0.5, 0.7, m_alpha.value()));
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m_ras.gamma(agg::gamma_threshold(m_gamma.value()));
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m_ras.add_path(path);
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agg::render_scanlines(m_ras, m_sl_bin, ren_bin);
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//-- Drawing an outline with subpixel accuracy (aliased)
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//typedef agg::renderer_primitives<renderer_base> renderer_pr;
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//renderer_pr ren_pr(rb);
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//agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
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//ren_pr.line_color(agg::rgba(0.0, 0.0, 0.0));
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//ras_line.add_path(path);
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}
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virtual void on_draw()
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{
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pixfmt pixf(rbuf_window());
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renderer_base rb(pixf);
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renderer_aa ren_aa(rb);
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rb.clear(agg::rgba(1, 1, 1));
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agg::rasterizer_scanline_aa<> ras_aa;
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draw_anti_aliased();
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draw_aliased();
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agg::render_ctrl(ras_aa, m_sl_p8, rb, m_gamma);
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agg::render_ctrl(ras_aa, m_sl_p8, rb, m_alpha);
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agg::render_ctrl(ras_aa, m_sl_p8, rb, m_test);
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}
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virtual void on_mouse_button_down(int x, int y, unsigned flags)
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{
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if(flags & agg::mouse_left)
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{
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unsigned i;
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for (i = 0; i < 3; i++)
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{
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if(sqrt( (x-m_x[i]) * (x-m_x[i]) + (y-m_y[i]) * (y-m_y[i]) ) < 20.0 ||
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sqrt( (x-m_x[i]+200) * (x-m_x[i]+200) + (y-m_y[i]) * (y-m_y[i]) ) < 20)
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{
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m_dx = x - m_x[i];
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m_dy = y - m_y[i];
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m_idx = i;
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break;
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}
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}
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if(i == 3)
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{
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if(agg::point_in_triangle(m_x[0], m_y[0],
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m_x[1], m_y[1],
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m_x[2], m_y[2],
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x, y) ||
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agg::point_in_triangle(m_x[0] - 200, m_y[0],
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m_x[1] - 200, m_y[1],
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m_x[2] - 200, m_y[2],
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x, y))
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{
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m_dx = x - m_x[0];
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m_dy = y - m_y[0];
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m_idx = 3;
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}
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}
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}
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}
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virtual void on_mouse_move(int x, int y, unsigned flags)
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{
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if(flags & agg::mouse_left)
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{
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if(m_idx == 3)
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{
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double dx = x - m_dx;
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double dy = y - m_dy;
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m_x[1] -= m_x[0] - dx;
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m_y[1] -= m_y[0] - dy;
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m_x[2] -= m_x[0] - dx;
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m_y[2] -= m_y[0] - dy;
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m_x[0] = dx;
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m_y[0] = dy;
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force_redraw();
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return;
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}
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if(m_idx >= 0)
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{
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m_x[m_idx] = x - m_dx;
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m_y[m_idx] = y - m_dy;
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force_redraw();
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}
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}
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else
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{
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on_mouse_button_up(x, y, flags);
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}
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}
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virtual void on_mouse_button_up(int x, int y, unsigned flags)
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{
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m_idx = -1;
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}
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virtual void on_ctrl_change()
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{
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if(m_test.status())
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{
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on_draw();
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update_window();
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m_test.status(false);
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start_timer();
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int i;
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for(i = 0; i < 1000; i++)
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{
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draw_aliased();
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}
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double t1 = elapsed_time();
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start_timer();
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for(i = 0; i < 1000; i++)
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{
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draw_anti_aliased();
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}
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double t2 = elapsed_time();
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update_window();
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char buf[100];
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sprintf(buf, "Time Aliased=%.2fms Time Anti-Aliased=%.2fms", t1, t2);
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message(buf);
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}
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}
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virtual void on_key(int x, int y, unsigned key, unsigned flags)
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{
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double dx = 0;
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double dy = 0;
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switch(key)
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{
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case agg::key_left: dx = -0.1; break;
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case agg::key_right: dx = 0.1; break;
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case agg::key_up: dy = 0.1; break;
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case agg::key_down: dy = -0.1; break;
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}
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m_x[0] += dx;
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m_y[0] += dy;
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m_x[1] += dx;
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m_y[1] += dy;
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force_redraw();
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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. Line Join");
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if(app.init(500, 330, 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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