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-rw-r--r--src/toys/sweep.cpp89
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 :