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#include <stdlib.h>
#include <ctype.h>
#include <stdio.h>
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_scanline_p.h"
#include "agg_renderer_scanline.h"
#include "agg_conv_bspline.h"
#include "ctrl/agg_cbox_ctrl.h"
#include "ctrl/agg_slider_ctrl.h"
#include "platform/agg_platform_support.h"
#include "interactive_polygon.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
{
public:
typedef agg::renderer_base<pixfmt> renderer_base;
typedef agg::scanline_p8 scanline_type;
agg::interactive_polygon m_poly;
agg::slider_ctrl<agg::rgba8> m_num_points;
agg::cbox_ctrl<agg::rgba8> m_close;
int m_flip;
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_poly(6, 5.0),
m_num_points(5.0, 5.0, 340.0, 12.0, !flip_y),
m_close (350, 5.0, "Close", !flip_y),
m_flip(0)
{
add_ctrl(m_close);
m_num_points.range(1.0, 40.0);
m_num_points.value(20.0);
m_num_points.label("Number of intermediate Points = %.3f");
add_ctrl(m_num_points);
}
virtual void on_init()
{
if(m_flip)
{
m_poly.xn(0) = 100;
m_poly.yn(0) = height() - 100;
m_poly.xn(1) = width() - 100;
m_poly.yn(1) = height() - 100;
m_poly.xn(2) = width() - 100;
m_poly.yn(2) = 100;
m_poly.xn(3) = 100;
m_poly.yn(3) = 100;
}
else
{
m_poly.xn(0) = 100;
m_poly.yn(0) = 100;
m_poly.xn(1) = width() - 100;
m_poly.yn(1) = 100;
m_poly.xn(2) = width() - 100;
m_poly.yn(2) = height() - 100;
m_poly.xn(3) = 100;
m_poly.yn(3) = height() - 100;
}
m_poly.xn(4) = width() / 2;
m_poly.yn(4) = height() / 2;
m_poly.xn(5) = width() / 2;
m_poly.yn(5) = height() / 3;
}
virtual void on_draw()
{
pixfmt pixf(rbuf_window());
renderer_base rb(pixf);
rb.clear(agg::rgba(1, 1, 1));
scanline_type sl;
agg::rasterizer_scanline_aa<> ras;
agg::simple_polygon_vertex_source path(m_poly.polygon(),
m_poly.num_points(),
false,
m_close.status());
typedef agg::conv_bspline<agg::simple_polygon_vertex_source> conv_bspline_type;
conv_bspline_type bspline(path);
bspline.interpolation_step(1.0 / m_num_points.value());
typedef agg::conv_stroke<conv_bspline_type> conv_stroke_type;
conv_stroke_type stroke(bspline);
stroke.width(2.0);
ras.add_path(stroke);
agg::render_scanlines_aa_solid(ras, sl, rb, agg::rgba(0, 0, 0));
//--------------------------
// Render the "poly" tool and controls
ras.add_path(m_poly);
agg::render_scanlines_aa_solid(ras, sl, rb, agg::rgba(0, 0.3, 0.5, 0.6));
agg::render_ctrl(ras, sl, rb, m_close);
agg::render_ctrl(ras, sl, rb, m_num_points);
//--------------------------
}
virtual void on_mouse_button_down(int x, int y, unsigned flags)
{
if(flags & agg::mouse_left)
{
if(m_poly.on_mouse_button_down(x, y))
{
force_redraw();
}
}
}
virtual void on_mouse_move(int x, int y, unsigned flags)
{
if(flags & agg::mouse_left)
{
if(m_poly.on_mouse_move(x, y))
{
force_redraw();
}
}
if((flags & agg::mouse_left) == 0)
{
on_mouse_button_up(x, y, flags);
}
}
virtual void on_mouse_button_up(int x, int y, unsigned flags)
{
if(m_poly.on_mouse_button_up(x, y))
{
force_redraw();
}
}
virtual void on_key(int x, int y, unsigned key, unsigned flags)
{
if(key == ' ')
{
m_flip ^= 1;
on_init();
force_redraw();
}
}
};
int agg_main(int argc, char* argv[])
{
the_application app(pix_format, flip_y);
app.caption("AGG Example. BSpline Interpolator");
if(app.init(600, 600, agg::window_resize))
{
return app.run();
}
return 1;
}
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