From 1d767981eed4ef6b748492ffc2f6beed80f0ab27 Mon Sep 17 00:00:00 2001
From: "Kae..pl" <Kaelthas_Spellsinger@o2.pl>
Date: Mon, 25 Jun 2012 20:39:07 +0000
Subject: [PATCH] Fixes for mirror modifier (fixing several NPE that occured
 when model hed no binging or UV buffers, and fixing ClassCastException when
 model was small and ShorBuffer instead of IntBuffer was used for vertex
 indexing).

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9523 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
---
 .../blender/modifiers/MirrorModifier.java     | 39 +++++++++++++------
 1 file changed, 28 insertions(+), 11 deletions(-)

diff --git a/engine/src/blender/com/jme3/scene/plugins/blender/modifiers/MirrorModifier.java b/engine/src/blender/com/jme3/scene/plugins/blender/modifiers/MirrorModifier.java
index d44147666..bf8d91810 100644
--- a/engine/src/blender/com/jme3/scene/plugins/blender/modifiers/MirrorModifier.java
+++ b/engine/src/blender/com/jme3/scene/plugins/blender/modifiers/MirrorModifier.java
@@ -11,8 +11,11 @@ import com.jme3.scene.plugins.blender.exceptions.BlenderFileException;
 import com.jme3.scene.plugins.blender.file.Pointer;
 import com.jme3.scene.plugins.blender.file.Structure;
 import com.jme3.scene.plugins.blender.objects.ObjectHelper;
+
+import java.nio.Buffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -110,7 +113,7 @@ import java.util.logging.Logger;
                         FloatBuffer cloneBindPosePosition = clone.getFloatBuffer(Type.BindPosePosition);
                         FloatBuffer cloneNormals = clone.getFloatBuffer(Type.Normal);
                         FloatBuffer cloneBindPoseNormals = clone.getFloatBuffer(Type.BindPoseNormal);
-                        IntBuffer cloneIndexes = (IntBuffer) clone.getBuffer(Type.Index).getData();
+                        Buffer cloneIndexes = clone.getBuffer(Type.Index).getData();
 
                         // modyfying data
                         for (int i = mirrorIndex; i < clonePosition.limit(); i += 3) {
@@ -119,32 +122,46 @@ import java.util.logging.Logger;
 
                             if (Math.abs(d) <= tolerance) {
                                 clonePosition.put(i, center[mirrorIndex]);
-                                cloneBindPosePosition.put(i, center[mirrorIndex]);
+                                if(cloneBindPosePosition != null) {
+                                	cloneBindPosePosition.put(i, center[mirrorIndex]);
+                                }
                                 position.put(i, center[mirrorIndex]);
-                                bindPosePosition.put(i, center[mirrorIndex]);
+                                if(bindPosePosition != null) {
+                                	bindPosePosition.put(i, center[mirrorIndex]);
+                                }
                             } else {
                                 clonePosition.put(i, value + 2.0f * d);
-                                cloneBindPosePosition.put(i, value + 2.0f * d);
+                                if(cloneBindPosePosition != null) {
+                                	cloneBindPosePosition.put(i, value + 2.0f * d);
+                                }
                             }
                             cloneNormals.put(i, -cloneNormals.get(i));
-                            cloneBindPoseNormals.put(i, -cloneNormals.get(i));
-
+                            if(cloneBindPoseNormals != null) {
+                            	cloneBindPoseNormals.put(i, -cloneNormals.get(i));
+                            }
+                            
                             //modifying clone indexes
                             int vertexIndex = (i - mirrorIndex) / 3;
                             if (vertexIndex % 3 == 0 && vertexIndex<cloneIndexes.limit()) {
-                                int index = cloneIndexes.get(vertexIndex + 2);
-                                cloneIndexes.put(vertexIndex + 2, cloneIndexes.get(vertexIndex + 1));
-                                cloneIndexes.put(vertexIndex + 1, index);
+                            	if(cloneIndexes instanceof ShortBuffer) {
+                            		short index = ((ShortBuffer)cloneIndexes).get(vertexIndex + 2);
+                            		((ShortBuffer)cloneIndexes).put(vertexIndex + 2, ((ShortBuffer)cloneIndexes).get(vertexIndex + 1));
+                            		((ShortBuffer)cloneIndexes).put(vertexIndex + 1, index);
+                            	} else {
+                            		int index = ((IntBuffer)cloneIndexes).get(vertexIndex + 2);
+                            		((IntBuffer)cloneIndexes).put(vertexIndex + 2, ((IntBuffer)cloneIndexes).get(vertexIndex + 1));
+                            		((IntBuffer)cloneIndexes).put(vertexIndex + 1, index);
+                            	}
                             }
                         }
 
-                        if (mirrorU) {
+                        if (mirrorU && clone.getBuffer(Type.TexCoord) != null) {
                             FloatBuffer cloneUVs = (FloatBuffer) clone.getBuffer(Type.TexCoord).getData();
                             for (int i = 0; i < cloneUVs.limit(); i += 2) {
                                 cloneUVs.put(i, 1.0f - cloneUVs.get(i));
                             }
                         }
-                        if (mirrorV) {
+                        if (mirrorV && clone.getBuffer(Type.TexCoord) != null) {
                             FloatBuffer cloneUVs = (FloatBuffer) clone.getBuffer(Type.TexCoord).getData();
                             for (int i = 1; i < cloneUVs.limit(); i += 2) {
                                 cloneUVs.put(i, 1.0f - cloneUVs.get(i));