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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_ellipse.h"
#include "agg_trans_affine.h"
#include "agg_conv_transform.h"
#include "agg_span_image_filter_rgb.h"
#include "agg_span_image_filter_rgba.h"
#include "agg_span_image_filter_gray.h"
#include "agg_pixfmt_rgba.h"
#include "agg_scanline_u.h"
#include "agg_renderer_scanline.h"
#include "agg_span_allocator.h"
#include "agg_span_interpolator_linear.h"
#include "agg_image_accessors.h"
#include "ctrl/agg_slider_ctrl.h"
#include "platform/agg_platform_support.h"
enum flip_y_e { flip_y = true };
#define AGG_BGR24
#include "pixel_formats.h"
class the_application : public agg::platform_support
{
agg::slider_ctrl<agg::rgba8> m_angle;
agg::slider_ctrl<agg::rgba8> m_scale;
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_angle(5, 5, 300, 12, !flip_y),
m_scale(5, 5+15, 300, 12+15, !flip_y)
{
add_ctrl(m_angle);
add_ctrl(m_scale);
m_angle.label("Angle=%3.2f");
m_scale.label("Scale=%3.2f");
m_angle.range(-180.0, 180.0);
m_angle.value(0.0);
m_scale.range(0.1, 5.0);
m_scale.value(1.0);
}
virtual ~the_application()
{
}
virtual void on_draw()
{
typedef agg::renderer_base<pixfmt> renderer_base;
typedef agg::renderer_base<pixfmt_pre> renderer_base_pre;
pixfmt pixf(rbuf_window());
pixfmt_pre pixf_pre(rbuf_window());
renderer_base rb(pixf);
renderer_base_pre rb_pre(pixf_pre);
rb.clear(agg::rgba(1.0, 1.0, 1.0));
agg::trans_affine src_mtx;
src_mtx *= agg::trans_affine_translation(-initial_width()/2 - 10, -initial_height()/2 - 20 - 10);
src_mtx *= agg::trans_affine_rotation(m_angle.value() * agg::pi / 180.0);
src_mtx *= agg::trans_affine_scaling(m_scale.value());
src_mtx *= agg::trans_affine_translation(initial_width()/2, initial_height()/2 + 20);
src_mtx *= trans_affine_resizing();
agg::trans_affine img_mtx;
img_mtx *= agg::trans_affine_translation(-initial_width()/2 + 10, -initial_height()/2 + 20 + 10);
img_mtx *= agg::trans_affine_rotation(m_angle.value() * agg::pi / 180.0);
img_mtx *= agg::trans_affine_scaling(m_scale.value());
img_mtx *= agg::trans_affine_translation(initial_width()/2, initial_height()/2 + 20);
img_mtx *= trans_affine_resizing();
img_mtx.invert();
agg::span_allocator<color_type> sa;
typedef agg::span_interpolator_linear<> interpolator_type;
interpolator_type interpolator(img_mtx);
typedef agg::image_accessor_clip<pixfmt> img_source_type;
pixfmt img_pixf(rbuf_img(0));
img_source_type img_src(img_pixf, agg::rgba_pre(0, 0.4, 0, 0.5));
/*
// Version without filtering (nearest neighbor)
//------------------------------------------
typedef agg::span_image_filter_rgb_nn<img_source_type,
interpolator_type> span_gen_type;
span_gen_type sg(img_src, interpolator);
//------------------------------------------
*/
// Version with "hardcoded" bilinear filter and without
// image_accessor (direct filter, the old variant)
//------------------------------------------
typedef agg::span_image_filter_rgb_bilinear_clip<pixfmt,
interpolator_type> span_gen_type;
span_gen_type sg(img_pixf, agg::rgba_pre(0, 0.4, 0, 0.5), interpolator);
//------------------------------------------
/*
// Version with arbitrary 2x2 filter
//------------------------------------------
typedef agg::span_image_filter_rgb_2x2<img_source_type,
interpolator_type> span_gen_type;
agg::image_filter<agg::image_filter_kaiser> filter;
span_gen_type sg(img_src, interpolator, filter);
//------------------------------------------
*/
/*
// Version with arbitrary filter
//------------------------------------------
typedef agg::span_image_filter_rgb<img_source_type,
interpolator_type> span_gen_type;
agg::image_filter<agg::image_filter_spline36> filter;
span_gen_type sg(img_src, interpolator, filter);
//------------------------------------------
*/
agg::rasterizer_scanline_aa<> ras;
ras.clip_box(0, 0, width(), height());
agg::scanline_u8 sl;
double r = initial_width();
if(initial_height() - 60 < r) r = initial_height() - 60;
agg::ellipse ell(initial_width() / 2.0 + 10,
initial_height() / 2.0 + 20 + 10,
r / 2.0 + 16.0,
r / 2.0 + 16.0, 200);
agg::conv_transform<agg::ellipse> tr(ell, src_mtx);
ras.add_path(tr);
agg::render_scanlines_aa(ras, sl, rb_pre, sa, sg);
agg::render_ctrl(ras, sl, rb, m_angle);
agg::render_ctrl(ras, sl, rb, m_scale);
}
};
int agg_main(int argc, char* argv[])
{
the_application app(pix_format, flip_y);
app.caption("Image Affine Transformations with filtering");
const char* img_name = "spheres";
if(argc >= 2) img_name = argv[1];
if(!app.load_img(0, img_name))
{
char buf[256];
if(strcmp(img_name, "spheres") == 0)
{
sprintf(buf, "File not found: %s%s. Download http://www.antigrain.com/%s%s\n"
"or copy it from another directory if available.",
img_name, app.img_ext(), img_name, app.img_ext());
}
else
{
sprintf(buf, "File not found: %s%s", img_name, app.img_ext());
}
app.message(buf);
return 1;
}
if(app.init(app.rbuf_img(0).width() + 20, app.rbuf_img(0).height() + 40 + 20, agg::window_resize))
{
// Test the plain/premultiplied issue
//-------------------
//typedef agg::pixfmt_bgra32 pixfmt;
//typedef agg::renderer_base<pixfmt> renderer_base;
//pixfmt pixf(app.rbuf_img(0));
//renderer_base rb(pixf);
//for(unsigned i = 0; i < app.rbuf_img(0).height(); i += 2)
//{
// // Fully transparent
// rb.copy_hline(0, i, app.rbuf_img(0).width(), agg::rgba(0, 0, 0, 0));
// if(i + 1 < app.rbuf_img(0).height())
// {
// // Fully opaque white
// rb.copy_hline(0, i + 1, app.rbuf_img(0).width(), agg::rgba(1, 1, 1, 1));
// }
//}
return app.run();
}
return 0;
}
/*
E:\agg23\examples\image1.cpp(111) : error C2664:
'__thiscall agg::span_image_filter_gray_bilinear<struct agg::gray8,
struct agg::order_bgra,
class agg::span_interpolator_linear<class agg::trans_affine,8> >::agg::span_image_filter_gray_bilinear<struct agg::gray8,struct agg::order_bgra,class agg::span_interpolator_linear<class agg::trans_affine,8> >(class agg::span_interpolator_linear<class agg::trans_affine,8> &,const class agg::row_ptr_cache<unsigned char> &,const struct agg::gray8 &,struct agg::order_bgra &)' :
cannot convert parameter 1 from
'class agg::span_allocator<struct agg::gray8>' to
'class agg::span_interpolator_linear<class agg::trans_affine,8> &'
*/
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