From: ThorstenB <brehmt@gmail.com>
Date: Sun, 29 May 2011 16:40:19 +0000 (+0200)
Subject: fixed #260: Scale animation also scales color
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=3c0966279c5bb27bd0cf9f3d850feb03ece783e4;p=simgear.git

fixed #260: Scale animation also scales color
Added missing normalization. Thanks to Lauri for analysing this.
---

diff --git a/simgear/scene/model/SGScaleTransform.cxx b/simgear/scene/model/SGScaleTransform.cxx
index ab9d6215..7b485590 100644
--- a/simgear/scene/model/SGScaleTransform.cxx
+++ b/simgear/scene/model/SGScaleTransform.cxx
@@ -35,6 +35,11 @@ SGScaleTransform::SGScaleTransform() :
   _boundScale(1)
 {
   setReferenceFrame(RELATIVE_RF);
+  // see osg::Transform doc: If the transformation matrix scales the subgraph
+  // then the normals of the underlying geometry will need to be renormalized
+  // to be unit vectors once more.
+  osg::StateSet* stateset = getOrCreateStateSet();
+  stateset->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
 }
 
 SGScaleTransform::SGScaleTransform(const SGScaleTransform& scale,