328 lines
8.8 KiB
C++
328 lines
8.8 KiB
C++
#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 "agg_conv_segmentator.h"
|
|
#include "agg_font_freetype.h"
|
|
#include "agg_trans_single_path.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 };
|
|
|
|
|
|
|
|
|
|
static char text[] =
|
|
"Anti-Grain Geometry is designed as a set of loosely coupled "
|
|
"algorithms and class templates united with a common idea, "
|
|
"so that all the components can be easily combined. Also, "
|
|
"the template based design allows you to replace any part of "
|
|
"the library without the necessity to modify a single byte in "
|
|
"the existing code. ";
|
|
|
|
|
|
|
|
|
|
class the_application : public agg::platform_support
|
|
{
|
|
public:
|
|
typedef agg::renderer_base<pixfmt> renderer_base;
|
|
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
|
|
typedef agg::scanline_p8 scanline_type;
|
|
typedef agg::font_engine_freetype_int16 font_engine_type;
|
|
typedef agg::font_cache_manager<font_engine_type> font_manager_type;
|
|
|
|
font_engine_type m_feng;
|
|
font_manager_type m_fman;
|
|
agg::interactive_polygon m_poly;
|
|
agg::slider_ctrl<color_type> m_num_points;
|
|
agg::cbox_ctrl<color_type> m_close;
|
|
agg::cbox_ctrl<color_type> m_preserve_x_scale;
|
|
agg::cbox_ctrl<color_type> m_fixed_len;
|
|
agg::cbox_ctrl<color_type> m_animate;
|
|
double m_dx[6];
|
|
double m_dy[6];
|
|
bool m_prev_animate;
|
|
|
|
the_application(agg::pix_format_e format, bool flip_y) :
|
|
agg::platform_support(format, flip_y),
|
|
m_feng(),
|
|
m_fman(m_feng),
|
|
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_preserve_x_scale(460, 5.0, "Preserve X scale", !flip_y),
|
|
m_fixed_len (350, 25.0, "Fixed Length", !flip_y),
|
|
m_animate (460, 25.0, "Animate", !flip_y),
|
|
m_prev_animate(false)
|
|
{
|
|
add_ctrl(m_close);
|
|
add_ctrl(m_preserve_x_scale);
|
|
add_ctrl(m_fixed_len);
|
|
add_ctrl(m_animate);
|
|
m_preserve_x_scale.status(true);
|
|
m_fixed_len.status(true);
|
|
m_num_points.range(10.0, 400.0);
|
|
m_num_points.value(200.0);
|
|
m_num_points.label("Number of intermediate Points = %.3f");
|
|
add_ctrl(m_num_points);
|
|
}
|
|
|
|
|
|
virtual void on_init()
|
|
{
|
|
m_poly.xn(0) = 50;
|
|
m_poly.yn(0) = 50;
|
|
m_poly.xn(1) = 150 + 20;
|
|
m_poly.yn(1) = 150 - 20;
|
|
m_poly.xn(2) = 250 - 20;
|
|
m_poly.yn(2) = 250 + 20;
|
|
m_poly.xn(3) = 350 + 20;
|
|
m_poly.yn(3) = 350 - 20;
|
|
m_poly.xn(4) = 450 - 20;
|
|
m_poly.yn(4) = 450 + 20;
|
|
m_poly.xn(5) = 550;
|
|
m_poly.yn(5) = 550;
|
|
}
|
|
|
|
|
|
|
|
|
|
virtual void on_draw()
|
|
{
|
|
pixfmt pixf(rbuf_window());
|
|
renderer_base rb(pixf);
|
|
renderer_solid r(rb);
|
|
rb.clear(agg::rgba(1, 1, 1));
|
|
|
|
scanline_type sl;
|
|
agg::rasterizer_scanline_aa<> ras;
|
|
|
|
m_poly.close(m_close.status());
|
|
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());
|
|
|
|
agg::trans_single_path tcurve;
|
|
tcurve.add_path(bspline);
|
|
tcurve.preserve_x_scale(m_preserve_x_scale.status());
|
|
if(m_fixed_len.status()) tcurve.base_length(1120);
|
|
|
|
typedef agg::conv_curve<font_manager_type::path_adaptor_type> conv_font_curve_type;
|
|
typedef agg::conv_segmentator<conv_font_curve_type> conv_font_segm_type;
|
|
typedef agg::conv_transform<conv_font_segm_type, agg::trans_single_path> conv_font_trans_type;
|
|
conv_font_curve_type fcurves(m_fman.path_adaptor());
|
|
|
|
conv_font_segm_type fsegm(fcurves);
|
|
conv_font_trans_type ftrans(fsegm, tcurve);
|
|
fsegm.approximation_scale(3.0);
|
|
fcurves.approximation_scale(2.0);
|
|
|
|
if(m_feng.load_font(full_file_name("timesi.ttf"), 0, agg::glyph_ren_outline))
|
|
{
|
|
double x = 0.0;
|
|
double y = 3.0;
|
|
const char* p = text;
|
|
|
|
m_feng.hinting(false);
|
|
m_feng.height(40);
|
|
|
|
while(*p)
|
|
{
|
|
const agg::glyph_cache* glyph = m_fman.glyph(*p);
|
|
if(glyph)
|
|
{
|
|
if(x > tcurve.total_length()) break;
|
|
|
|
m_fman.add_kerning(&x, &y);
|
|
m_fman.init_embedded_adaptors(glyph, x, y);
|
|
|
|
if(glyph->data_type == agg::glyph_data_outline)
|
|
{
|
|
ras.reset();
|
|
ras.add_path(ftrans);
|
|
r.color(agg::srgba8(0, 0, 0));
|
|
agg::render_scanlines(ras, sl, r);
|
|
}
|
|
|
|
// increment pen position
|
|
x += glyph->advance_x;
|
|
y += glyph->advance_y;
|
|
}
|
|
++p;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
message("Please copy file timesi.ttf to the current directory\n"
|
|
"or unzip it from ../art/timesi.zip");
|
|
}
|
|
|
|
|
|
|
|
typedef agg::conv_stroke<conv_bspline_type> conv_stroke_type;
|
|
conv_stroke_type stroke(bspline);
|
|
|
|
stroke.width(2.0);
|
|
|
|
r.color(agg::srgba8(170, 50, 20, 100));
|
|
ras.add_path(stroke);
|
|
agg::render_scanlines(ras, sl, r);
|
|
|
|
//--------------------------
|
|
// Render the "poly" tool and controls
|
|
r.color(agg::rgba(0, 0.3, 0.5, 0.3));
|
|
ras.add_path(m_poly);
|
|
agg::render_scanlines(ras, sl, r);
|
|
|
|
agg::render_ctrl(ras, sl, rb, m_close);
|
|
agg::render_ctrl(ras, sl, rb, m_preserve_x_scale);
|
|
agg::render_ctrl(ras, sl, rb, m_fixed_len);
|
|
agg::render_ctrl(ras, sl, rb, m_animate);
|
|
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)
|
|
{
|
|
}
|
|
|
|
|
|
virtual void on_ctrl_change()
|
|
{
|
|
if(m_animate.status() != m_prev_animate)
|
|
{
|
|
if(m_animate.status())
|
|
{
|
|
on_init();
|
|
int i;
|
|
for(i = 0; i < 6; i++)
|
|
{
|
|
m_dx[i] = ((rand() % 1000) - 500) * 0.01;
|
|
m_dy[i] = ((rand() % 1000) - 500) * 0.01;
|
|
}
|
|
wait_mode(false);
|
|
}
|
|
else
|
|
{
|
|
wait_mode(true);
|
|
}
|
|
m_prev_animate = m_animate.status();
|
|
}
|
|
}
|
|
|
|
|
|
void move_point(double& x, double& y, double& dx, double& dy)
|
|
{
|
|
if(x < 0.0) { x = 0.0; dx = -dx; }
|
|
if(x > width()) { x = width(); dx = -dx; }
|
|
if(y < 0.0) { y = 0.0; dy = -dy; }
|
|
if(y > height()) { y = height(); dy = -dy; }
|
|
x += dx;
|
|
y += dy;
|
|
}
|
|
|
|
|
|
|
|
virtual void on_idle()
|
|
{
|
|
int i;
|
|
for(i = 0; i < 6; i++)
|
|
{
|
|
move_point(m_poly.xn(i), m_poly.yn(i), m_dx[i], m_dy[i]);
|
|
}
|
|
force_redraw();
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
int agg_main(int argc, char* argv[])
|
|
{
|
|
the_application app(pix_format, flip_y);
|
|
app.caption("AGG Example. Non-linear \"Along-A-Curve\" Transformer");
|
|
|
|
if(app.init(600, 600, agg::window_resize))
|
|
{
|
|
return app.run();
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|