#include <math.h> #include <stdio.h> #include <time.h> #include "agg_basics.h" #include "agg_rendering_buffer.h" #include "agg_conv_transform.h" #include "agg_conv_stroke.h" #include "agg_conv_clip_polyline.h" #include "agg_scanline_p.h" #include "agg_renderer_scanline.h" #include "agg_rasterizer_outline_aa.h" #include "agg_rasterizer_scanline_aa.h" #include "agg_pattern_filters_rgba.h" #include "agg_renderer_outline_aa.h" #include "agg_renderer_outline_image.h" #include "agg_pixfmt_rgb.h" #include "ctrl/agg_slider_ctrl.h" #include "ctrl/agg_bezier_ctrl.h" #include "platform/agg_platform_support.h" enum flip_y_e { flip_y = true }; typedef agg::pixfmt_bgr24 pixfmt; static agg::int8u brightness_to_alpha[256 * 3] = { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 251, 251, 251, 251, 251, 251, 251, 251, 251, 250, 250, 250, 250, 250, 250, 250, 250, 249, 249, 249, 249, 249, 249, 249, 248, 248, 248, 248, 248, 248, 248, 247, 247, 247, 247, 247, 246, 246, 246, 246, 246, 246, 245, 245, 245, 245, 245, 244, 244, 244, 244, 243, 243, 243, 243, 243, 242, 242, 242, 242, 241, 241, 241, 241, 240, 240, 240, 239, 239, 239, 239, 238, 238, 238, 238, 237, 237, 237, 236, 236, 236, 235, 235, 235, 234, 234, 234, 233, 233, 233, 232, 232, 232, 231, 231, 230, 230, 230, 229, 229, 229, 228, 228, 227, 227, 227, 226, 226, 225, 225, 224, 224, 224, 223, 223, 222, 222, 221, 221, 220, 220, 219, 219, 219, 218, 218, 217, 217, 216, 216, 215, 214, 214, 213, 213, 212, 212, 211, 211, 210, 210, 209, 209, 208, 207, 207, 206, 206, 205, 204, 204, 203, 203, 202, 201, 201, 200, 200, 199, 198, 198, 197, 196, 196, 195, 194, 194, 193, 192, 192, 191, 190, 190, 189, 188, 188, 187, 186, 186, 185, 184, 183, 183, 182, 181, 180, 180, 179, 178, 177, 177, 176, 175, 174, 174, 173, 172, 171, 171, 170, 169, 168, 167, 166, 166, 165, 164, 163, 162, 162, 161, 160, 159, 158, 157, 156, 156, 155, 154, 153, 152, 151, 150, 149, 148, 148, 147, 146, 145, 144, 143, 142, 141, 140, 139, 138, 137, 136, 135, 134, 133, 132, 131, 130, 129, 128, 128, 127, 125, 124, 123, 122, 121, 120, 119, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109, 108, 107, 106, 105, 104, 102, 101, 100, 99, 98, 97, 96, 95, 94, 93, 91, 90, 89, 88, 87, 86, 85, 84, 82, 81, 80, 79, 78, 77, 75, 74, 73, 72, 71, 70, 69, 67, 66, 65, 64, 63, 61, 60, 59, 58, 57, 56, 54, 53, 52, 51, 50, 48, 47, 46, 45, 44, 42, 41, 40, 39, 37, 36, 35, 34, 33, 31, 30, 29, 28, 27, 25, 24, 23, 22, 20, 19, 18, 17, 15, 14, 13, 12, 11, 9, 8, 7, 6, 4, 3, 2, 1 }; class pattern_src_brightness_to_alpha_rgba8 { public: pattern_src_brightness_to_alpha_rgba8(agg::rendering_buffer& rb) : m_rb(&rb), m_pf(*m_rb) {} unsigned width() const { return m_pf.width(); } unsigned height() const { return m_pf.height(); } agg::rgba8 pixel(int x, int y) const { agg::rgba8 c = m_pf.pixel(x, y); c.a = brightness_to_alpha[c.r + c.g + c.b]; return c; } private: agg::rendering_buffer* m_rb; pixfmt m_pf; }; class the_application : public agg::platform_support { agg::rgba8 m_ctrl_color; agg::bezier_ctrl<agg::rgba8> m_curve1; agg::bezier_ctrl<agg::rgba8> m_curve2; agg::bezier_ctrl<agg::rgba8> m_curve3; agg::bezier_ctrl<agg::rgba8> m_curve4; agg::bezier_ctrl<agg::rgba8> m_curve5; agg::bezier_ctrl<agg::rgba8> m_curve6; agg::bezier_ctrl<agg::rgba8> m_curve7; agg::bezier_ctrl<agg::rgba8> m_curve8; agg::bezier_ctrl<agg::rgba8> m_curve9; agg::slider_ctrl<agg::rgba8> m_scale_x; agg::slider_ctrl<agg::rgba8> m_start_x; public: typedef agg::renderer_base<pixfmt> renderer_base; typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_scanline; typedef agg::rasterizer_scanline_aa<> rasterizer_scanline; typedef agg::scanline_p8 scanline; the_application(agg::pix_format_e format, bool flip_y) : agg::platform_support(format, flip_y), m_ctrl_color(agg::rgba(0, 0.3, 0.5, 0.3)), m_scale_x(5.0, 5.0, 240.0, 12.0, !flip_y), m_start_x(250.0, 5.0, 495.0, 12.0, !flip_y) { m_curve1.line_color(m_ctrl_color); m_curve2.line_color(m_ctrl_color); m_curve3.line_color(m_ctrl_color); m_curve4.line_color(m_ctrl_color); m_curve5.line_color(m_ctrl_color); m_curve6.line_color(m_ctrl_color); m_curve7.line_color(m_ctrl_color); m_curve8.line_color(m_ctrl_color); m_curve9.line_color(m_ctrl_color); m_curve1.curve(64, 19, 14, 126, 118, 266, 19, 265); m_curve2.curve(112, 113, 178, 32, 200, 132, 125, 438); m_curve3.curve(401, 24, 326, 149, 285, 11, 177, 77); m_curve4.curve(188, 427, 129, 295, 19, 283, 25, 410); m_curve5.curve(451, 346, 302, 218, 265, 441, 459, 400); m_curve6.curve(454, 198, 14, 13, 220, 291, 483, 283); m_curve7.curve(301, 398, 355, 231, 209, 211, 170, 353); m_curve8.curve(484, 101, 222, 33, 486, 435, 487, 138); m_curve9.curve(143, 147, 11, 45, 83, 427, 132, 197); add_ctrl(m_curve1); add_ctrl(m_curve2); add_ctrl(m_curve3); add_ctrl(m_curve4); add_ctrl(m_curve5); add_ctrl(m_curve6); add_ctrl(m_curve7); add_ctrl(m_curve8); add_ctrl(m_curve9); m_curve1.no_transform(); m_curve2.no_transform(); m_curve3.no_transform(); m_curve4.no_transform(); m_curve5.no_transform(); m_curve6.no_transform(); m_curve7.no_transform(); m_curve8.no_transform(); m_curve9.no_transform(); m_scale_x.label("Scale X=%.2f"); m_scale_x.range(0.2, 3.0); m_scale_x.value(1.0); m_scale_x.no_transform(); add_ctrl(m_scale_x); m_start_x.label("Start X=%.2f"); m_start_x.range(0.0, 10.0); m_start_x.value(0.0); m_start_x.no_transform(); add_ctrl(m_start_x); } template<class Pattern, class Rasterizer, class Renderer, class PatternSource, class VertexSource> void draw_curve(Pattern& patt, Rasterizer& ras, Renderer& ren, PatternSource& src, VertexSource& vs) { patt.create(src); ren.scale_x(m_scale_x.value()); ren.start_x(m_start_x.value()); ras.add_path(vs); } virtual void on_draw() { pixfmt pf(rbuf_window()); renderer_base ren_base(pf); ren_base.clear(agg::rgba(1.0, 1.0, 0.95)); renderer_scanline ren(ren_base); rasterizer_scanline ras; scanline sl; // Pattern source. Must have an interface: // width() const // height() const // pixel(int x, int y) const // Any agg::renderer_base<> or derived // is good for the use as a source. //----------------------------------- pattern_src_brightness_to_alpha_rgba8 p1(rbuf_img(0)); pattern_src_brightness_to_alpha_rgba8 p2(rbuf_img(1)); pattern_src_brightness_to_alpha_rgba8 p3(rbuf_img(2)); pattern_src_brightness_to_alpha_rgba8 p4(rbuf_img(3)); pattern_src_brightness_to_alpha_rgba8 p5(rbuf_img(4)); pattern_src_brightness_to_alpha_rgba8 p6(rbuf_img(5)); pattern_src_brightness_to_alpha_rgba8 p7(rbuf_img(6)); pattern_src_brightness_to_alpha_rgba8 p8(rbuf_img(7)); pattern_src_brightness_to_alpha_rgba8 p9(rbuf_img(8)); agg::pattern_filter_bilinear_rgba8 fltr; // Filtering functor // agg::line_image_pattern is the main container for the patterns. It creates // a copy of the patterns extended according to the needs of the filter. // agg::line_image_pattern can operate with arbitrary image width, but if the // width of the pattern is power of 2, it's better to use the modified // version agg::line_image_pattern_pow2 because it works about 15-25 percent // faster than agg::line_image_pattern (because of using simple masking instead // of expensive '%' operation). typedef agg::line_image_pattern<agg::pattern_filter_bilinear_rgba8> pattern_type; typedef agg::renderer_base<pixfmt> base_ren_type; typedef agg::renderer_outline_image<base_ren_type, pattern_type> renderer_type; typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type; //-- Create with specifying the source //pattern_type patt(fltr, src); //-- Create uninitialized and set the source pattern_type patt(fltr); renderer_type ren_img(ren_base, patt); rasterizer_type ras_img(ren_img); draw_curve(patt, ras_img, ren_img, p1, m_curve1.curve()); draw_curve(patt, ras_img, ren_img, p2, m_curve2.curve()); draw_curve(patt, ras_img, ren_img, p3, m_curve3.curve()); draw_curve(patt, ras_img, ren_img, p4, m_curve4.curve()); draw_curve(patt, ras_img, ren_img, p5, m_curve5.curve()); draw_curve(patt, ras_img, ren_img, p6, m_curve6.curve()); draw_curve(patt, ras_img, ren_img, p7, m_curve7.curve()); draw_curve(patt, ras_img, ren_img, p8, m_curve8.curve()); draw_curve(patt, ras_img, ren_img, p9, m_curve9.curve()); agg::render_ctrl(ras, sl, ren_base, m_curve1); agg::render_ctrl(ras, sl, ren_base, m_curve2); agg::render_ctrl(ras, sl, ren_base, m_curve3); agg::render_ctrl(ras, sl, ren_base, m_curve4); agg::render_ctrl(ras, sl, ren_base, m_curve5); agg::render_ctrl(ras, sl, ren_base, m_curve6); agg::render_ctrl(ras, sl, ren_base, m_curve7); agg::render_ctrl(ras, sl, ren_base, m_curve8); agg::render_ctrl(ras, sl, ren_base, m_curve9); agg::render_ctrl(ras, sl, ren_base, m_scale_x); agg::render_ctrl(ras, sl, ren_base, m_start_x); } virtual void on_key(int x, int y, unsigned key, unsigned flags) { if(key == ' ') { FILE* fd = fopen(full_file_name("coord"), "w"); fprintf(fd, "%.0f, %.0f, %.0f, %.0f, %.0f, %.0f, %.0f, %.0f", m_curve1.x1(), m_curve1.y1(), m_curve1.x2(), m_curve1.y2(), m_curve1.x3(), m_curve1.y3(), m_curve1.x4(), m_curve1.y4()); fclose(fd); } } virtual void on_ctrl_change() { } }; int agg_main(int argc, char* argv[]) { the_application app(agg::pix_format_bgr24, flip_y); app.caption("AGG Example. Drawing Lines with Image Patterns"); if(!app.load_img(0, "1") || !app.load_img(1, "2") || !app.load_img(2, "3") || !app.load_img(3, "4") || !app.load_img(4, "5") || !app.load_img(5, "6") || !app.load_img(6, "7") || !app.load_img(7, "8") || !app.load_img(8, "9")) { char buf[256]; sprintf(buf, "There must be files 1%s...9%s\n" "Download and unzip:\n" "http://www.antigrain.com/line_patterns.bmp.zip\n" "or\n" "http://www.antigrain.com/line_patterns.ppm.tar.gz\n", app.img_ext(), app.img_ext()); app.message(buf); return 1; } if(app.init(500, 450, agg::window_resize)) { return app.run(); } return 1; } |