261 lines
7.1 KiB
C++
261 lines
7.1 KiB
C++
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#include <stdlib.h>
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#include <ctype.h>
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#include <stdio.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_path_storage.h"
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#include "agg_conv_stroke.h"
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#include "agg_conv_transform.h"
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#include "agg_bounding_rect.h"
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#include "agg_scanline_u.h"
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#include "agg_scanline_p.h"
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#include "agg_pixfmt_rgb.h"
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#include "agg_renderer_base.h"
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#include "agg_renderer_outline_aa.h"
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#include "agg_rasterizer_outline_aa.h"
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#include "agg_renderer_scanline.h"
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#include "agg_span_allocator.h"
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#include "agg_ellipse.h"
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#include "platform/agg_platform_support.h"
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// Note: example currently only supports 8-bit color
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#define AGG_BGR24
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#include "pixel_formats.h"
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enum flip_y_e { flip_y = true };
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agg::path_storage g_path;
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agg::srgba8 g_colors[100];
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unsigned g_path_idx[100];
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unsigned g_npaths = 0;
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double g_x1 = 0;
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double g_y1 = 0;
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double g_x2 = 0;
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double g_y2 = 0;
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double g_base_dx = 0;
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double g_base_dy = 0;
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double g_angle = 0;
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double g_scale = 1.0;
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double g_skew_x = 0;
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double g_skew_y = 0;
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int g_nclick = 0;
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unsigned parse_lion(agg::path_storage& ps, agg::srgba8* colors, unsigned* path_idx);
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void parse_lion()
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{
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g_npaths = parse_lion(g_path, g_colors, g_path_idx);
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agg::pod_array_adaptor<unsigned> path_idx(g_path_idx, 100);
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agg::bounding_rect(g_path, path_idx, 0, g_npaths, &g_x1, &g_y1, &g_x2, &g_y2);
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g_base_dx = (g_x2 - g_x1) / 2.0;
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g_base_dy = (g_y2 - g_y1) / 2.0;
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}
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template<class Order> class span_simple_blur_rgb24
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{
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public:
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//--------------------------------------------------------------------
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span_simple_blur_rgb24() : m_source_image(0) {}
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//--------------------------------------------------------------------
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span_simple_blur_rgb24(const agg::rendering_buffer& src) :
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m_source_image(&src) {}
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//--------------------------------------------------------------------
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void source_image(const agg::rendering_buffer& src) { m_source_image = &src; }
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const agg::rendering_buffer& source_image() const { return *m_source_image; }
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//--------------------------------------------------------------------
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void prepare() {}
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//--------------------------------------------------------------------
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void generate(color_type* span, int x, int y, int len)
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{
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if(y < 1 || y >= int(m_source_image->height() - 1))
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{
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do
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{
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*span++ = color_type::no_color();
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}
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while(--len);
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return;
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}
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do
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{
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color_type::calc_type color[3];
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color[0] = color[1] = color[2] = 0;
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if(x > 0 && x < int(m_source_image->width()-1))
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{
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int i = 3;
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do
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{
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const agg::int8u* ptr = m_source_image->row_ptr(y - i + 2) + (x - 1) * 3;
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color[0] += *ptr++;
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color[1] += *ptr++;
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color[2] += *ptr++;
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color[0] += *ptr++;
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color[1] += *ptr++;
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color[2] += *ptr++;
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color[0] += *ptr++;
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color[1] += *ptr++;
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color[2] += *ptr++;
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}
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while(--i);
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color[0] /= 9;
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color[1] /= 9;
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color[2] /= 9;
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}
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*span++ = color_type(color[Order::R], color[Order::G], color[Order::B]);
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++x;
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}
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while(--len);
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}
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private:
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const agg::rendering_buffer* m_source_image;
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};
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class the_application : public agg::platform_support
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{
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double m_cx;
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double m_cy;
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public:
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virtual ~the_application()
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{
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}
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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_cx(100),
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m_cy(102)
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{
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parse_lion();
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}
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virtual void on_resize(int cx, int cy)
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{
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}
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virtual void on_draw()
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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_solid;
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pixfmt pixf(rbuf_window());
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renderer_base rb(pixf);
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renderer_solid rs(rb);
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rb.clear(agg::rgba(1, 1, 1));
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agg::trans_affine mtx;
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agg::conv_transform<agg::path_storage, agg::trans_affine> trans(g_path, mtx);
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mtx *= agg::trans_affine_translation(-g_base_dx, -g_base_dy);
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mtx *= agg::trans_affine_scaling(g_scale, g_scale);
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mtx *= agg::trans_affine_rotation(g_angle + agg::pi);
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mtx *= agg::trans_affine_skewing(g_skew_x/1000.0, g_skew_y/1000.0);
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mtx *= agg::trans_affine_translation(initial_width()/4, initial_height()/2);
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mtx *= trans_affine_resizing();
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agg::rasterizer_scanline_aa<> ras2;
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agg::scanline_p8 sl;
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agg::scanline_u8 sl2;
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agg::render_all_paths(ras2, sl, rs, trans, g_colors, g_path_idx, g_npaths);
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mtx *= ~trans_affine_resizing();
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mtx *= agg::trans_affine_translation(initial_width()/2, 0);
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mtx *= trans_affine_resizing();
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agg::line_profile_aa profile;
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profile.width(1.0);
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agg::renderer_outline_aa<renderer_base> rp(rb, profile);
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agg::rasterizer_outline_aa<agg::renderer_outline_aa<renderer_base> > ras(rp);
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ras.round_cap(true);
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ras.render_all_paths(trans, g_colors, g_path_idx, g_npaths);
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agg::ellipse ell(m_cx, m_cy, 100.0, 100.0, 100);
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agg::conv_stroke<agg::ellipse> ell_stroke1(ell);
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ell_stroke1.width(6.0);
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agg::conv_stroke<agg::conv_stroke<agg::ellipse> > ell_stroke2(ell_stroke1);
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ell_stroke2.width(2.0);
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rs.color(agg::rgba(0,0.2,0));
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ras2.add_path(ell_stroke2);
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agg::render_scanlines(ras2, sl, rs);
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typedef span_simple_blur_rgb24<component_order> span_blur_gen;
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typedef agg::span_allocator<color_type> span_blur_alloc;
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span_blur_alloc sa;
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span_blur_gen sg;
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sg.source_image(rbuf_img(0));
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ras2.add_path(ell);
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copy_window_to_img(0);
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agg::render_scanlines_aa(ras2, sl2, rb, sa, sg);
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// More blur if desired :-)
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//copy_window_to_img(0);
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//agg::render_scanlines(ras2, sl2, rblur);
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//copy_window_to_img(0);
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//agg::render_scanlines(ras2, sl2, rblur);
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//copy_window_to_img(0);
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//agg::render_scanlines(ras2, sl2, rblur);
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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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m_cx = x;
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m_cy = y;
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force_redraw();
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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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on_mouse_button_down(x, y, flags);
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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. Lion with Alpha-Masking");
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if(app.init(512, 400, 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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