Fix for thinning strokes at intersections between visible and background hidden lines.

This commit is intended to fully fix the problem described in
https://developer.blender.org/T36425#19 (see also the previous commit rB08528f577dcb).

Addition of a small offset (to avoid singularity in stroke rendering due to overlapping vertices)
was not performed for all overlapping vertices.

Removed the StrokeCleaner and related helper functions which were added as a
temporary workaround in rB2a5b6d9c8f16.

1 files changed, 4 insertions, 5 deletions

diff --git a/source/blender/freestyle/intern/stroke/Operators.cpp b/source/blender/freestyle/intern/stroke/Operators.cpp
index 2f05413fcbe..427994f80f1 100644
--- a/source/blender/freestyle/intern/stroke/Operators.cpp
+++ b/source/blender/freestyle/intern/stroke/Operators.cpp
@@ -1147,17 +1147,16 @@ static Stroke *createStroke(Interface1D& inter)
 				StrokeVertex *sv;
 				std::vector<StrokeVertex *>::iterator it = overlapping_vertices.begin();
 				if (!reverse) {
-					for (int n = 1; n < nvert; n++) {
+					for (int n = 0; n < nvert; n++) {
 						sv = (*it);
-						sv->setPoint(sv->getPoint() + offset * n);
+						sv->setPoint(sv->getPoint() + offset * (n + 1));
 						++it;
 					}
 				}
 				else {
-					int last = nvert - 1;
-					for (int n = 0; n < last; n++) {
+					for (int n = 0; n < nvert; n++) {
 						sv = (*it);
-						sv->setPoint(sv->getPoint() + offset * (last - n));
+						sv->setPoint(sv->getPoint() + offset * (nvert - n));
 						++it;
 					}
 				}