From 0f2b7cf2e1aae16e3cf4e699ab7e3ca83deb1529 Mon Sep 17 00:00:00 2001
From: hwc487
Date: Mon, 23 Apr 2012 11:32:15 -0700
Subject: limits

---
 js/tools/PanTool.js | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/js/tools/PanTool.js b/js/tools/PanTool.js
index 0537a27b..ce7606a1 100755
--- a/js/tools/PanTool.js
+++ b/js/tools/PanTool.js
@@ -331,10 +331,26 @@ exports.PanTool = Montage.create(toolBase,
 				
 				if (!this._altKeyDown)
 					delta[2] = 0;
-				var transMat = Matrix.Translation( delta );
-				this._worldPt = wPt;
+
+				// limit the change
+				var ucMat = viewUtils.getMatrixFromElement(this.application.ninja.currentDocument.documentRoot);
+				var tooMuch = false
+				if ((ucMat[12] >  12000) && (delta[0] > 0))  tooMuch = true;
+				if ((ucMat[12] < -12000) && (delta[0] < 0))  tooMuch = true;
+				if ((ucMat[13] >  12000) && (delta[1] > 0))  tooMuch = true;
+				if ((ucMat[13] < -12000) && (delta[1] < 0))  tooMuch = true;
+				if ((ucMat[14] >  12000) && (delta[2] > 0))  tooMuch = true;
+				if ((ucMat[14] < -12000) && (delta[2] < 0))  tooMuch = true;
+				if (tooMuch)
+				{
+					this._isDrawing = false;
+					delta = [0,0,0];
+				}
+				else
+					this._worldPt = wPt;
 
 				// update everything
+				var transMat = Matrix.Translation( delta );
 				this.applyDeltaMat( transMat );
 			}
 		}
-- 
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