Prefer Intersector::PROJECTION over Intersector::WINDOW

Kafou1 · Nov 30, 2015 · 576d511 · 576d511
1 parent 14b1432
commit 576d511
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/apps/openmw/mwrender/characterpreview.cpp b/apps/openmw/mwrender/characterpreview.cpp
@@ -269,7 +269,11 @@ namespace MWRender
 
     int InventoryPreview::getSlotSelected (int posX, int posY)
     {
-        osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector (new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, posX, posY));
+        float projX = (posX / mCamera->getViewport()->width()) * 2 - 1.f;
+        float projY = (posY / mCamera->getViewport()->height()) * 2 - 1.f;
+        // With Intersector::WINDOW, the intersection ratios are slightly inaccurate. TODO: investigate
+        osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector (new osgUtil::LineSegmentIntersector(osgUtil::Intersector::PROJECTION, projX, projY));
+
         intersector->setIntersectionLimit(osgUtil::LineSegmentIntersector::LIMIT_NEAREST);
         osgUtil::IntersectionVisitor visitor(intersector);
         visitor.setTraversalMode(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN);