From 7c16630874230d886aa1d94f620c8b332676d93a Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Fri, 13 Nov 2015 00:21:30 +0100
Subject: [PATCH] NifOsg::Emitter: ignore psToWorld scale

Seems wrong to me, but MW appears to do it that way. Without this fix, the light_de_candle_08_64 from http://www.nexusmods.com/morrowind/mods/41654/ has flame particles in the wrong spot.
---
 components/nifosg/particle.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/components/nifosg/particle.cpp b/components/nifosg/particle.cpp
index 68f3de8aa..44d062d8b 100644
--- a/components/nifosg/particle.cpp
+++ b/components/nifosg/particle.cpp
@@ -264,7 +264,9 @@ void Emitter::emitParticles(double dt)
     osg::MatrixList worldMats = getParticleSystem()->getWorldMatrices();
     if (!worldMats.empty())
     {
-        const osg::Matrix psToWorld = worldMats[0];
+        osg::Matrix psToWorld = worldMats[0];
+        // ignore scales in particlesystem world matrix. this seems wrong, but have to do so for MW compatibility.
+        psToWorld.orthoNormalize(psToWorld);
         worldToPs = osg::Matrix::inverse(psToWorld);
     }