1 files changed, 81 insertions, 0 deletions
diff --git a/src/2geom/crossing.cpp b/src/2geom/crossing.cpp
new file mode 100644
index 000000000..8f29635e8
--- /dev/null
+++ b/src/2geom/crossing.cpp
@@ -0,0 +1,81 @@
+#include "crossing.h"
+
+namespace Geom {
+
+void merge_crossings(Crossings &a, Crossings &b, unsigned i) {
+    Crossings n;
+    sort_crossings(b, i);
+    n.resize(a.size() + b.size());
+    std::merge(a.begin(), a.end(), b.begin(), b.end(), n.begin(), CrossingOrder(i));
+    a = n;
+}
+
+void offset_crossings(Crossings &cr, double a, double b) {
+    for(unsigned i = 0; i < cr.size(); i++) {
+        cr[i].ta += a;
+        cr[i].tb += b;
+    }
+}
+
+Crossings reverse_ta(Crossings const &cr, std::vector<double> max) {
+    Crossings ret;
+    for(Crossings::const_iterator i = cr.begin(); i != cr.end(); ++i) {
+        double mx = max[i->a];
+        ret.push_back(Crossing(i->ta > mx+0.01 ? (1 - (i->ta - mx) + mx) : mx - i->ta,
+                               i->tb, !i->dir));
+    }
+    return ret;
+}
+
+Crossings reverse_tb(Crossings const &cr, unsigned split, std::vector<double> max) {
+    Crossings ret;
+    for(Crossings::const_iterator i = cr.begin(); i != cr.end(); ++i) {
+        double mx = max[i->b - split];
+        std::cout << i->b << "\n";
+        ret.push_back(Crossing(i->ta, i->tb > mx+0.01 ? (1 - (i->tb - mx) + mx) : mx - i->tb,
+                               !i->dir));
+    }
+    return ret;
+}
+
+CrossingSet reverse_ta(CrossingSet const &cr, unsigned split, std::vector<double> max) {
+    CrossingSet ret;
+    for(unsigned i = 0; i < cr.size(); i++) {
+        Crossings res = reverse_ta(cr[i], max);
+        if(i < split) std::reverse(res.begin(), res.end());
+        ret.push_back(res);
+    }
+    return ret;
+}
+
+CrossingSet reverse_tb(CrossingSet const &cr, unsigned split, std::vector<double> max) {
+    CrossingSet ret;
+    for(unsigned i = 0; i < cr.size(); i++) {
+        Crossings res = reverse_tb(cr[i], split, max);
+        if(i >= split) std::reverse(res.begin(), res.end());
+        ret.push_back(res);
+    }
+    return ret;
+}
+
+void clean(Crossings &cr_a, Crossings &cr_b) {
+/*    if(cr_a.empty()) return;
+    
+    //Remove anything with dupes
+    
+    for(Eraser<Crossings> i(&cr_a); !i.ended(); i++) {
+        const Crossing cur = *i;
+        Eraser<Crossings> next(i);
+        next++;
+        if(near(cur, *next)) {
+            cr_b.erase(std::find(cr_b.begin(), cr_b.end(), cur));
+            for(i = next; near(*i, cur); i++) {
+                cr_b.erase(std::find(cr_b.begin(), cr_b.end(), *i));
+            }
+            continue;
+        }
+    }
+*/
+}
+
+}