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#include <stdio.h>
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_scanline_u.h"
#include "agg_renderer_scanline.h"
#include "agg_rounded_rect.h"
#include "agg_pixfmt_rgba.h"
#include "agg_span_allocator.h"
#include "agg_span_gradient.h"
#include "agg_gsv_text.h"
#include "agg_span_interpolator_linear.h"
#include "platform/agg_platform_support.h"
#include "ctrl/agg_slider_ctrl.h"
#include "ctrl/agg_rbox_ctrl.h"
enum flip_y_e { flip_y = true };
typedef agg::rgba8 color;
typedef agg::order_bgra order;
typedef agg::pixel32_type pixel_type;
#define pix_format agg::pix_format_bgra32
typedef agg::blender_rgba<color, order> prim_blender_type;
typedef agg::pixfmt_alpha_blend_rgba<prim_blender_type, agg::rendering_buffer, pixel_type> prim_pixfmt_type;
typedef agg::renderer_base<prim_pixfmt_type> prim_ren_base_type;
void force_comp_op_link()
{
// For unknown reason Digital Mars C++ doesn't want to link these
// functions if they are not specified explicitly.
agg::int8u p[4] = {0};
agg::comp_op_rgba_invert_rgb <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_invert <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_contrast <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_darken <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_lighten <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_color_dodge<color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_color_burn <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_hard_light <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_soft_light <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_difference <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_exclusion <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_src_atop <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_dst_atop <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_xor <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_plus <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_minus <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_multiply <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_screen <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_overlay <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_src <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_dst <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_src_over <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_dst_over <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_src_in <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_dst_in <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_src_out <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_dst_out <color, order>::blend_pix(p,0,0,0,0,0);
agg::comp_op_rgba_clear <color, order>::blend_pix(p,0,0,0,0,0);
}
template<class Container, class ColorT>
void generate_color_ramp(Container& c,
ColorT c1, ColorT c2, ColorT c3, ColorT c4)
{
unsigned i;
for(i = 0; i < 85; i++)
{
c[i] = c1.gradient(c2, i/85.0);
}
for(; i < 170; i++)
{
c[i] = c2.gradient(c3, (i - 85)/85.0);
}
for(; i < 256; i++)
{
c[i] = c3.gradient(c4, (i - 170)/85.0);
}
}
class the_application : public agg::platform_support
{
agg::slider_ctrl<color> m_alpha_dst;
agg::slider_ctrl<color> m_alpha_src;
agg::rbox_ctrl<agg::rgba8> m_comp_op;
agg::pod_auto_array<color, 256> m_ramp1;
agg::pod_auto_array<color, 256> m_ramp2;
agg::rasterizer_scanline_aa<> m_ras;
agg::scanline_u8 m_sl;
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_alpha_dst(5, 5, 400, 11, !flip_y),
m_alpha_src(5, 5+15, 400, 11+15, !flip_y),
m_comp_op(420, 5.0, 420+170.0, 395.0, !flip_y)
{
m_alpha_dst.label("Dst Alpha=%.2f");
m_alpha_dst.value(1.0);
add_ctrl(m_alpha_dst);
m_alpha_src.label("Src Alpha=%.2f");
m_alpha_src.value(1.0);
add_ctrl(m_alpha_src);
m_comp_op.text_size(6.8);
m_comp_op.add_item("clear");
m_comp_op.add_item("src");
m_comp_op.add_item("dst");
m_comp_op.add_item("src-over");
m_comp_op.add_item("dst-over");
m_comp_op.add_item("src-in");
m_comp_op.add_item("dst-in");
m_comp_op.add_item("src-out");
m_comp_op.add_item("dst-out");
m_comp_op.add_item("src-atop");
m_comp_op.add_item("dst-atop");
m_comp_op.add_item("xor");
m_comp_op.add_item("plus");
m_comp_op.add_item("minus");
m_comp_op.add_item("multiply");
m_comp_op.add_item("screen");
m_comp_op.add_item("overlay");
m_comp_op.add_item("darken");
m_comp_op.add_item("lighten");
m_comp_op.add_item("color-dodge");
m_comp_op.add_item("color-burn");
m_comp_op.add_item("hard-light");
m_comp_op.add_item("soft-light");
m_comp_op.add_item("difference");
m_comp_op.add_item("exclusion");
m_comp_op.add_item("contrast");
m_comp_op.add_item("invert");
m_comp_op.add_item("invert-rgb");
m_comp_op.cur_item(3);
add_ctrl(m_comp_op);
}
template<class RenBase, class ColorRamp>
void radial_shape(RenBase& rbase, const ColorRamp& colors,
double x1, double y1, double x2, double y2)
{
typedef RenBase renderer_base_type;
typedef agg::gradient_radial gradient_func_type;
typedef ColorRamp color_func_type;
typedef agg::span_interpolator_linear<> interpolator_type;
typedef agg::span_allocator<color> span_allocator_type;
typedef agg::span_gradient<color,
interpolator_type,
gradient_func_type,
color_func_type> span_gradient_type;
gradient_func_type gradient_func; // The gradient function
agg::trans_affine gradient_mtx;
interpolator_type span_interpolator(gradient_mtx); // Span interpolator
span_allocator_type span_allocator; // Span Allocator
span_gradient_type span_gradient(span_interpolator,
gradient_func,
colors,
0, 100);
double cx = (x1 + x2) / 2.0;
double cy = (y1 + y2) / 2.0;
double r = 0.5 * (((x2 - x1) < (y2 - y1)) ? (x2 - x1) : (y2 - y1));
gradient_mtx *= agg::trans_affine_scaling(r / 100.0);
gradient_mtx *= agg::trans_affine_translation(cx, cy);
gradient_mtx *= trans_affine_resizing();
gradient_mtx.invert();
agg::ellipse ell(cx, cy, r, r, 100);
agg::conv_transform<agg::ellipse> trans(ell, trans_affine_resizing());
m_ras.add_path(trans);
agg::render_scanlines_aa(m_ras, m_sl, rbase, span_allocator, span_gradient);
}
template<class RenBase> void render_scene(RenBase& rb)
{
typedef agg::comp_op_adaptor_rgba<color, order> blender_type;
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_type;
typedef agg::renderer_base<pixfmt_type> renderer_type;
pixfmt_type pixf(rbuf_window());
renderer_type ren(pixf);
pixf.comp_op(agg::comp_op_difference);
radial_shape(ren, m_ramp1, 50, 50, 50+320, 50+320);
pixf.comp_op(m_comp_op.cur_item());
double cx = 50;
double cy = 50;
radial_shape(ren, m_ramp2, cx+120-70, cy+120-70, cx+120+70, cy+120+70);
radial_shape(ren, m_ramp2, cx+200-70, cy+120-70, cx+200+70, cy+120+70);
radial_shape(ren, m_ramp2, cx+120-70, cy+200-70, cx+120+70, cy+200+70);
radial_shape(ren, m_ramp2, cx+200-70, cy+200-70, cx+200+70, cy+200+70);
}
virtual void on_draw()
{
prim_pixfmt_type pixf(rbuf_window());
prim_ren_base_type rb(pixf);
rb.clear(agg::rgba8(255, 255, 255));
generate_color_ramp(m_ramp1,
agg::rgba(0, 0, 0, m_alpha_dst.value()),
agg::rgba(0, 0, 1, m_alpha_dst.value()),
agg::rgba(0, 1, 0, m_alpha_dst.value()),
agg::rgba(1, 0, 0, 0));
generate_color_ramp(m_ramp2,
agg::rgba(0, 0, 0, m_alpha_src.value()),
agg::rgba(0, 0, 1, m_alpha_src.value()),
agg::rgba(0, 1, 0, m_alpha_src.value()),
agg::rgba(1, 0, 0, 0));
render_scene(rb);
agg::renderer_scanline_aa_solid<prim_ren_base_type> ren(rb);
agg::render_ctrl_rs(m_ras, m_sl, ren, m_alpha_dst);
agg::render_ctrl_rs(m_ras, m_sl, ren, m_alpha_src);
agg::render_ctrl_rs(m_ras, m_sl, ren, m_comp_op);
}
};
int agg_main(int argc, char* argv[])
{
force_comp_op_link();
the_application app(pix_format, flip_y);
app.caption("AGG Example. Compositing Modes");
if(app.init(600, 400, agg::window_resize|agg::window_keep_aspect_ratio))
{
return app.run();
}
return 1;
}
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