1 files changed, 65 insertions, 0 deletions
diff --git a/src/2geom/path-intersection.h b/src/2geom/path-intersection.h
new file mode 100644
index 000000000..3401386e0
--- /dev/null
+++ b/src/2geom/path-intersection.h
@@ -0,0 +1,65 @@
+#ifndef __GEOM_PATH_INTERSECTION_H
+#define __GEOM_PATH_INTERSECTION_H
+
+#include "path.h"
+
+#include "crossing.h"
+
+#include "sweep.h"
+
+namespace Geom {
+
+int winding(Path const &path, Point p);
+bool path_direction(Path const &p);
+
+inline bool contains(Path const & p, Point i, bool evenodd = true) {
+    return (evenodd ? winding(p, i) % 2 : winding(p, i)) != 0;
+}
+
+template<typename T>
+Crossings curve_sweep(Path const &a, Path const &b) {
+    T t;
+    Crossings ret;
+    std::vector<Rect> bounds_a = bounds(a), bounds_b = bounds(b);
+    std::vector<std::vector<unsigned> > ixs = sweep_bounds(bounds_a, bounds_b);
+    for(unsigned i = 0; i < a.size(); i++) {
+        for(std::vector<unsigned>::iterator jp = ixs[i].begin(); jp != ixs[i].end(); jp++) {
+            Crossings cc = t.crossings(a[i], b[*jp]);
+            offset_crossings(cc, i, *jp);
+            ret.insert(ret.end(), cc.begin(), cc.end());
+        }
+    }
+    return ret;
+}
+
+struct SimpleCrosser : public Crosser<Path> {
+    Crossings crossings(Curve const &a, Curve const &b);
+    Crossings crossings(Path const &a, Path const &b) { return curve_sweep<SimpleCrosser>(a, b); }
+    CrossingSet crossings(std::vector<Path> const &a, std::vector<Path> const &b) { return Crosser<Path>::crossings(a, b); }
+};
+
+struct MonoCrosser : public Crosser<Path> {
+    Crossings crossings(Path const &a, Path const &b) { return crossings(std::vector<Path>(1,a), std::vector<Path>(1,b))[0]; }
+    CrossingSet crossings(std::vector<Path> const &a, std::vector<Path> const &b);
+};
+
+typedef SimpleCrosser DefaultCrosser;
+
+std::vector<double> path_mono_splits(Path const &p);
+
+CrossingSet crossings_among(std::vector<Path> const & p);
+inline Crossings self_crossings(Path const & a) { return crossings_among(std::vector<Path>(1, a))[0]; }
+
+inline Crossings crossings(Path const & a, Path const & b) {
+    DefaultCrosser c = DefaultCrosser();
+    return c.crossings(a, b);
+}
+
+inline CrossingSet crossings(std::vector<Path> const & a, std::vector<Path> const & b) {
+    DefaultCrosser c = DefaultCrosser();
+    return c.crossings(a, b);
+}
+
+}
+
+#endif