From c32d5db75cc72172a9064eaedecb362670c7b6e1 Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Sat, 13 Sep 2014 15:32:21 -0700
Subject: [PATCH] fix bug with attachments being stretched

---
 interface/src/renderer/Model.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/interface/src/renderer/Model.cpp b/interface/src/renderer/Model.cpp
index 85e4e9c94f..51e1249bd9 100644
--- a/interface/src/renderer/Model.cpp
+++ b/interface/src/renderer/Model.cpp
@@ -894,7 +894,21 @@ void Model::setScaleToFit(bool scaleToFit, const glm::vec3& dimensions) {
 }
 
 void Model::setScaleToFit(bool scaleToFit, float largestDimension) {
-    setScaleToFit(scaleToFit, glm::vec3(largestDimension, largestDimension, largestDimension));
+    if (_scaleToFit != scaleToFit || glm::length(_scaleToFitDimensions) != largestDimension) {
+        _scaleToFit = scaleToFit;
+        
+        // we only need to do this work if we're "turning on" scale to fit.
+        if (scaleToFit) {
+            Extents modelMeshExtents = getUnscaledMeshExtents();
+            float maxDimension = glm::distance(modelMeshExtents.maximum, modelMeshExtents.minimum);
+            float maxScale = largestDimension / maxDimension;
+            glm::vec3 modelMeshDimensions = modelMeshExtents.maximum - modelMeshExtents.minimum;
+            glm::vec3 dimensions = modelMeshDimensions * maxScale;
+        
+            _scaleToFitDimensions = dimensions;
+            _scaledToFit = false; // force rescaling
+        }
+    }
 }
 
 void Model::scaleToFit() {