diff options
Diffstat (limited to 'src/toys/sweep.cpp')
-rw-r--r-- | src/toys/sweep.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/toys/sweep.cpp b/src/toys/sweep.cpp new file mode 100644 index 0000000..4f26b81 --- /dev/null +++ b/src/toys/sweep.cpp @@ -0,0 +1,89 @@ +#include <2geom/sweep-bounds.h> + +#include <toys/path-cairo.h> +#include <toys/toy-framework-2.h> + +using namespace Geom; + +class Sweep: public Toy { +public: + PointSetHandle hand; + unsigned count_a, count_b; + void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override { + std::vector<Rect> rects_a, rects_b; + cairo_set_source_rgb(cr, 0,0,0); + + for(unsigned i = 0; i < count_a; i++) + rects_a.emplace_back(hand.pts[i*2], hand.pts[i*2+1]); + + for(unsigned i = 0; i < count_b; i++) + rects_b.emplace_back(hand.pts[i*2 + count_a*2], hand.pts[i*2+1 + count_a*2]); + + { + std::vector<std::vector<unsigned> > res = sweep_bounds(rects_a); + cairo_set_line_width(cr,0.5); + cairo_save(cr); + cairo_set_source_rgb(cr, 1, 0, 0); + for(unsigned i = 0; i < res.size(); i++) { + for(unsigned j = 0; j < res[i].size(); j++) { + draw_line_seg(cr, rects_a[i].midpoint(), rects_a[res[i][j]].midpoint()); + cairo_stroke(cr); + } + } + cairo_restore(cr); + }{ + std::vector<std::vector<unsigned> > res = sweep_bounds(rects_a, rects_b); + cairo_set_line_width(cr,0.5); + cairo_save(cr); + cairo_set_source_rgb(cr, 0.5, 0, 0.5); + for(unsigned i = 0; i < res.size(); i++) { + for(unsigned j = 0; j < res[i].size(); j++) { + draw_line_seg(cr, rects_a[i].midpoint(), rects_b[res[i][j]].midpoint()); + cairo_stroke(cr); + } + } + cairo_restore(cr); + } + cairo_set_line_width(cr,3); + cairo_set_source_rgba(cr,1,0,0,1); + for(unsigned i = 0; i < count_a; i++) + cairo_rectangle(cr, rects_a[i].left(), rects_a[i].top(), rects_a[i].width(), rects_a[i].height()); + cairo_stroke(cr); + + cairo_set_source_rgba(cr,0,0,1,1); + for(unsigned i = 0; i < count_b; i++) + cairo_rectangle(cr, rects_b[i].left(), rects_b[i].top(), rects_b[i].width(), rects_b[i].height()); + cairo_stroke(cr); + + Toy::draw(cr, notify, width, height, save,timer_stream); + } + bool should_draw_numbers() override { return false; } + public: + Sweep () { + count_a = 20; + count_b = 10; + for(unsigned i = 0; i < (count_a + count_b); i++) { + Point dim(uniform() * 90 + 10, uniform() * 90 + 10), + pos(uniform() * 500 + 50, uniform() * 500 + 50); + hand.pts.push_back(pos - dim/2); + hand.pts.push_back(pos + dim/2); + } + handles.push_back(&hand); + } +}; + +int main(int argc, char **argv) { + init(argc, argv, new Sweep()); + return 0; +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:fileencoding=utf-8:textwidth=99 : |