WIP clipping

1 files changed, 33 insertions, 0 deletions

diff --git a/nextus/src/lineClipper.cpp b/nextus/src/lineClipper.cpp
new file mode 100644
index 0000000..bbfa9eb
--- /dev/null
+++ b/nextus/src/lineClipper.cpp
@@ -0,0 +1,33 @@
+#include "lineClipper.h"
+
+vector <colourPolyline> lineClipper::mask(
+	vector <colourPolyline> shapes,
+	vector <ofPolyline> mask,
+	bool invert
+	)
+{
+	vector <colourPolyline> output;
+
+	ofx::Clipper clipper;
+		
+	for (auto& shape: shapes)
+    {	
+    	clipper.Clear();
+		clipper.addPolylines(mask, ClipperLib::ptClip);
+		vector <ofPolyline> polys; //TODO make clipper clip colourpolylines
+    	shapes.push_back(shape);
+    	clipper.addPolylines(polys,ClipperLib::ptSubject);
+		vector <ofPolyline> clipped;
+		if (invert){
+			clipped = clipper.getClipped(ClipperLib::ctDifference);
+		}else {
+			clipped = clipper.getClipped(ClipperLib::ctIntersection);
+		}
+		for (auto& clip: clipped)
+	    {
+	    	//clip.simplify(contour_simplify);
+	        output.push_back(colourPolyline(clip,shape.getColourAt(0)));
+	    }
+    }
+    return output;
+}
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