Extracted mWearableDatas from LLAgentWearables into llappearance/LLWearableData. Moved LLDriverParam into llappearance

9 files changed, 1292 insertions, 13 deletions

diff --git a/indra/llappearance/CMakeLists.txt b/indra/llappearance/CMakeLists.txt
index 0206f76546..41da898457 100644
--- a/indra/llappearance/CMakeLists.txt
+++ b/indra/llappearance/CMakeLists.txt
@@ -42,6 +42,7 @@ include_directories(
 
 set(llappearance_SOURCE_FILES
     llavatarappearance.cpp
+    lldriverparam.cpp
     llinventoryicon.cpp
     lllocaltextureobject.cpp
     lltexglobalcolor.cpp
@@ -49,6 +50,7 @@ set(llappearance_SOURCE_FILES
     lltexlayerparams.cpp
     lltexturemanagerbridge.cpp
     llwearable.cpp
+    llwearabledata.cpp
     llwearabletype.cpp
     llviewervisualparam.cpp
     llavatarappearancedefines.cpp
@@ -58,6 +60,7 @@ set(llappearance_HEADER_FILES
     CMakeLists.txt
 
     llavatarappearance.h
+    lldriverparam.h
     llinventoryicon.h
     lljointpickname.h
     lllocaltextureobject.h
@@ -66,6 +69,7 @@ set(llappearance_HEADER_FILES
     lltexlayerparams.h
     lltexturemanagerbridge.h
     llwearable.h
+    llwearabledata.h
     llwearabletype.h
     llviewervisualparam.h
     llavatarappearancedefines.h
diff --git a/indra/llappearance/llavatarappearance.cpp b/indra/llappearance/llavatarappearance.cpp
index 75b9c1ffa5..0f0942d8dc 100644
--- a/indra/llappearance/llavatarappearance.cpp
+++ b/indra/llappearance/llavatarappearance.cpp
@@ -29,16 +29,19 @@
 #include "llavatarappearance.h"
 #include "lldeleteutils.h"
 #include "lltexglobalcolor.h"
+#include "llwearabledata.h"
 
 const LLColor4 DUMMY_COLOR = LLColor4(0.5,0.5,0.5,1.0);
 
-LLAvatarAppearance::LLAvatarAppearance() :
+LLAvatarAppearance::LLAvatarAppearance(LLWearableData* wearable_data) :
 	LLCharacter(),
+	mIsDummy(FALSE),
 	mTexSkinColor( NULL ),
 	mTexHairColor( NULL ),
 	mTexEyeColor( NULL ),
-	mIsDummy(FALSE)
+	mWearableData(wearable_data)
 {
+	llassert(mWearableData);
 }
 
 // virtual
@@ -51,6 +54,17 @@ LLAvatarAppearance::~LLAvatarAppearance()
 
 using namespace LLAvatarAppearanceDefines;
 
+// virtual
+BOOL LLAvatarAppearance::isValid() const
+{
+	// This should only be called on ourself.
+	if (!isSelf())
+	{
+		llerrs << "Called LLAvatarAppearance::isValid() on when isSelf() == false" << llendl;
+	}
+	return TRUE;
+}
+
 //static
 BOOL LLAvatarAppearance::teToColorParams( ETextureIndex te, U32 *param_name )
 {
@@ -178,5 +192,47 @@ LLColor4 LLAvatarAppearance::getGlobalColor( const std::string& color_name ) con
 	}
 }
 
+// Unlike most wearable functions, this works for both self and other.
+// virtual
+BOOL LLAvatarAppearance::isWearingWearableType(LLWearableType::EType type) const
+{
+	if (mIsDummy) return TRUE;
+
+	switch(type)
+	{
+		case LLWearableType::WT_SHAPE:
+		case LLWearableType::WT_SKIN:
+		case LLWearableType::WT_HAIR:
+		case LLWearableType::WT_EYES:
+			return TRUE;  // everyone has all bodyparts
+		default:
+			break; // Do nothing
+	}
+
+	/* switch(type)
+		case LLWearableType::WT_SHIRT:
+			indicator_te = TEX_UPPER_SHIRT; */
+	for (LLAvatarAppearanceDictionary::Textures::const_iterator tex_iter = LLAvatarAppearanceDictionary::getInstance()->getTextures().begin();
+		 tex_iter != LLAvatarAppearanceDictionary::getInstance()->getTextures().end();
+		 ++tex_iter)
+	{
+		const LLAvatarAppearanceDictionary::TextureEntry *texture_dict = tex_iter->second;
+		if (texture_dict->mWearableType == type)
+		{
+			// If you're checking another avatar's clothing, you don't have component textures.
+			// Thus, you must check to see if the corresponding baked texture is defined.
+			// NOTE: this is a poor substitute if you actually want to know about individual pieces of clothing
+			// this works for detecting a skirt (most important), but is ineffective at any piece of clothing that
+			// gets baked into a texture that always exists (upper or lower).
+			if (texture_dict->mIsUsedByBakedTexture)
+			{
+				const EBakedTextureIndex baked_index = texture_dict->mBakedTextureIndex;
+				return isTextureDefined(LLAvatarAppearanceDictionary::getInstance()->getBakedTexture(baked_index)->mTextureIndex);
+			}
+			return FALSE;
+		}
+	}
+	return FALSE;
+}
 
 
diff --git a/indra/llappearance/llavatarappearance.h b/indra/llappearance/llavatarappearance.h
index 0e746b3b9d..2209ede927 100644
--- a/indra/llappearance/llavatarappearance.h
+++ b/indra/llappearance/llavatarappearance.h
@@ -33,6 +33,7 @@
 
 class LLTexLayerSet;
 class LLTexGlobalColor;
+class LLWearableData;
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // LLAvatarAppearance
@@ -47,9 +48,12 @@ class LLAvatarAppearance : public LLCharacter
  **                                                                            **
  **                    INITIALIZATION
  **/
+private:
+	// Hide default constructor.
+	LLAvatarAppearance() {}
 
 public:
-	LLAvatarAppearance();
+	LLAvatarAppearance(LLWearableData* wearable_data);
 	virtual ~LLAvatarAppearance();
 
 /**                    Initialization
@@ -62,6 +66,7 @@ public:
  **/
 public:
 	virtual bool 	isSelf() const { return false; } // True if this avatar is for this viewer's agent
+	virtual BOOL	isValid() const;
 	virtual BOOL	isUsingBakedTextures() const = 0;
 	
 /**                    State
@@ -145,15 +150,13 @@ public:
  **/
 
 public:
-	virtual BOOL			isWearingWearableType(LLWearableType::EType type ) const = 0;
-
-	virtual U32				getWearableCount(const LLWearableType::EType type) const = 0;
-	virtual U32				getWearableCount(const U32 tex_index) const = 0;
-
-	virtual LLWearable*			getWearable(const LLWearableType::EType type, U32 index /*= 0*/) = 0;
-	virtual const LLWearable* 	getWearable(const LLWearableType::EType type, U32 index /*= 0*/) const = 0;
-
+	LLWearableData*			getWearableData() { return mWearableData; }
+	const LLWearableData*	getWearableData() const { return mWearableData; }
+	virtual BOOL isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex te, U32 index = 0 ) const = 0;
+	virtual BOOL			isWearingWearableType(LLWearableType::EType type ) const;
 
+private:
+	LLWearableData* mWearableData;
 };
 
 #endif // LL_AVATAR_APPEARANCE_H
diff --git a/indra/llappearance/lldriverparam.cpp b/indra/llappearance/lldriverparam.cpp
new file mode 100644
index 0000000000..1092b525d0
--- /dev/null
+++ b/indra/llappearance/lldriverparam.cpp
@@ -0,0 +1,614 @@
+/** 
+ * @file lldriverparam.cpp
+ * @brief A visual parameter that drives (controls) other visual parameters.
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lldriverparam.h"
+
+#include "llavatarappearance.h"
+#include "llwearable.h"
+#include "llwearabledata.h"
+
+//-----------------------------------------------------------------------------
+// LLDriverParamInfo
+//-----------------------------------------------------------------------------
+
+LLDriverParamInfo::LLDriverParamInfo() :
+	mDriverParam(NULL)
+{
+}
+
+BOOL LLDriverParamInfo::parseXml(LLXmlTreeNode* node)
+{
+	llassert( node->hasName( "param" ) && node->getChildByName( "param_driver" ) );
+
+	if( !LLViewerVisualParamInfo::parseXml( node ))
+		return FALSE;
+
+	LLXmlTreeNode* param_driver_node = node->getChildByName( "param_driver" );
+	if( !param_driver_node )
+		return FALSE;
+
+	for (LLXmlTreeNode* child = param_driver_node->getChildByName( "driven" );
+		 child;
+		 child = param_driver_node->getNextNamedChild())
+	{
+		S32 driven_id;
+		static LLStdStringHandle id_string = LLXmlTree::addAttributeString("id");
+		if( child->getFastAttributeS32( id_string, driven_id ) )
+		{
+			F32 min1 = mMinWeight;
+			F32 max1 = mMaxWeight;
+			F32 max2 = max1;
+			F32 min2 = max1;
+
+			//	driven    ________							//
+			//	^        /|       |\						//
+			//	|       / |       | \						//
+			//	|      /  |       |  \						//
+			//	|     /   |       |   \						//
+			//	|    /    |       |    \					//
+			//-------|----|-------|----|-------> driver		//
+			//  | min1   max1    max2  min2
+
+			static LLStdStringHandle min1_string = LLXmlTree::addAttributeString("min1");
+			child->getFastAttributeF32( min1_string, min1 ); // optional
+			static LLStdStringHandle max1_string = LLXmlTree::addAttributeString("max1");
+			child->getFastAttributeF32( max1_string, max1 ); // optional
+			static LLStdStringHandle max2_string = LLXmlTree::addAttributeString("max2");
+			child->getFastAttributeF32( max2_string, max2 ); // optional
+			static LLStdStringHandle min2_string = LLXmlTree::addAttributeString("min2");
+			child->getFastAttributeF32( min2_string, min2 ); // optional
+
+			// Push these on the front of the deque, so that we can construct
+			// them in order later (faster)
+			mDrivenInfoList.push_front( LLDrivenEntryInfo( driven_id, min1, max1, max2, min2 ) );
+		}
+		else
+		{
+			llerrs << "<driven> Unable to resolve driven parameter: " << driven_id << llendl;
+			return FALSE;
+		}
+	}
+	return TRUE;
+}
+
+//virtual 
+void LLDriverParamInfo::toStream(std::ostream &out)
+{
+	LLViewerVisualParamInfo::toStream(out);
+	out << "driver" << "\t";
+	out << mDrivenInfoList.size() << "\t";
+	for (entry_info_list_t::iterator iter = mDrivenInfoList.begin(); iter != mDrivenInfoList.end(); iter++)
+	{
+		LLDrivenEntryInfo driven = *iter;
+		out << driven.mDrivenID << "\t";
+	}
+
+	out << std::endl;
+
+	if(mDriverParam && mDriverParam->getAvatarAppearance()->isSelf() &&
+		mDriverParam->getAvatarAppearance()->isValid())
+	{
+		for (entry_info_list_t::iterator iter = mDrivenInfoList.begin(); iter != mDrivenInfoList.end(); iter++)
+		{
+			LLDrivenEntryInfo driven = *iter;
+			LLViewerVisualParam *param = 
+				(LLViewerVisualParam*)mDriverParam->getAvatarAppearance()->getVisualParam(driven.mDrivenID);
+			if (param)
+			{
+				param->getInfo()->toStream(out);
+				if (param->getWearableType() != mWearableType)
+				{
+					if(param->getCrossWearable())
+					{
+						out << "cross-wearable" << "\t";
+					}
+					else
+					{
+						out << "ERROR!" << "\t";
+					}
+				}
+				else
+				{
+					out << "valid" << "\t";
+				}
+			}
+			else
+			{
+				llwarns << "could not get parameter " << driven.mDrivenID << " from avatar " 
+						<< mDriverParam->getAvatarAppearance() 
+						<< " for driver parameter " << getID() << llendl;
+			}
+			out << std::endl;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// LLDriverParam
+//-----------------------------------------------------------------------------
+
+LLDriverParam::LLDriverParam(LLAvatarAppearance *appearance, LLWearable* wearable /* = NULL */) :
+	mCurrentDistortionParam( NULL ), 
+	mAvatarAppearance(appearance), 
+	mWearablep(wearable)
+{
+	llassert(mAvatarAppearance);
+	if (mWearablep)
+	{
+		llassert(mAvatarAppearance->isSelf());
+	}
+	mDefaultVec.clear();
+}
+
+LLDriverParam::~LLDriverParam()
+{
+}
+
+BOOL LLDriverParam::setInfo(LLDriverParamInfo *info)
+{
+	llassert(mInfo == NULL);
+	if (info->mID < 0)
+		return FALSE;
+	mInfo = info;
+	mID = info->mID;
+	info->mDriverParam = this;
+
+	setWeight(getDefaultWeight(), FALSE );
+
+	return TRUE;
+}
+
+/*virtual*/ LLViewerVisualParam* LLDriverParam::cloneParam(LLWearable* wearable) const
+{
+	llassert(wearable);
+	LLDriverParam *new_param = new LLDriverParam(mAvatarAppearance, wearable);
+	*new_param = *this;
+	return new_param;
+}
+
+void LLDriverParam::setWeight(F32 weight, BOOL upload_bake)
+{
+	F32 min_weight = getMinWeight();
+	F32 max_weight = getMaxWeight();
+	if (mIsAnimating)
+	{
+		// allow overshoot when animating
+		mCurWeight = weight;
+	}
+	else
+	{
+		mCurWeight = llclamp(weight, min_weight, max_weight);
+	}
+
+	//	driven    ________
+	//	^        /|       |\       ^
+	//	|       / |       | \      |
+	//	|      /  |       |  \     |
+	//	|     /   |       |   \    |
+	//	|    /    |       |    \   |
+	//-------|----|-------|----|-------> driver
+	//  | min1   max1    max2  min2
+
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		LLDrivenEntryInfo* info = driven->mInfo;
+		
+		F32 driven_weight = 0.f;
+		F32 driven_min = driven->mParam->getMinWeight();
+		F32 driven_max = driven->mParam->getMaxWeight();
+
+		if (mIsAnimating)
+		{
+			// driven param doesn't interpolate (textures, for example)
+			if (!driven->mParam->getAnimating())
+			{
+				continue;
+			}
+			if( mCurWeight < info->mMin1 )
+			{
+				if (info->mMin1 == min_weight)
+				{
+					if (info->mMin1 == info->mMax1)
+					{
+						driven_weight = driven_max;
+					}
+					else
+					{
+						//up slope extrapolation
+						F32 t = (mCurWeight - info->mMin1) / (info->mMax1 - info->mMin1 );
+						driven_weight = driven_min + t * (driven_max - driven_min);
+					}
+				}
+				else
+				{
+					driven_weight = driven_min;
+				}
+				
+				setDrivenWeight(driven,driven_weight,upload_bake);
+				continue;
+			}
+			else 
+			if ( mCurWeight > info->mMin2 )
+			{
+				if (info->mMin2 == max_weight)
+				{
+					if (info->mMin2 == info->mMax2)
+					{
+						driven_weight = driven_max;
+					}
+					else
+					{
+						//down slope extrapolation					
+						F32 t = (mCurWeight - info->mMax2) / (info->mMin2 - info->mMax2 );
+						driven_weight = driven_max + t * (driven_min - driven_max);
+					}
+				}
+				else
+				{
+					driven_weight = driven_min;
+				}
+
+				setDrivenWeight(driven,driven_weight,upload_bake);
+				continue;
+			}
+		}
+
+		driven_weight = getDrivenWeight(driven, mCurWeight);
+		setDrivenWeight(driven,driven_weight,upload_bake);
+	}
+}
+
+F32	LLDriverParam::getTotalDistortion()
+{
+	F32 sum = 0.f;
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		sum += driven->mParam->getTotalDistortion();
+	}
+
+	return sum; 
+}
+
+const LLVector4a	&LLDriverParam::getAvgDistortion()	
+{
+	// It's not actually correct to take the average of averages, but it good enough here.
+	LLVector4a sum;
+	sum.clear();
+	S32 count = 0;
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		sum.add(driven->mParam->getAvgDistortion());
+		count++;
+	}
+	sum.mul( 1.f/(F32)count);
+
+	mDefaultVec = sum;
+	return mDefaultVec; 
+}
+
+F32	LLDriverParam::getMaxDistortion() 
+{
+	F32 max = 0.f;
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		F32 param_max = driven->mParam->getMaxDistortion();
+		if( param_max > max )
+		{
+			max = param_max;
+		}
+	}
+
+	return max; 
+}
+
+
+LLVector4a	LLDriverParam::getVertexDistortion(S32 index, LLPolyMesh *poly_mesh)
+{
+	LLVector4a sum;
+	sum.clear();
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		sum.add(driven->mParam->getVertexDistortion( index, poly_mesh ));
+	}
+	return sum;
+}
+
+const LLVector4a*	LLDriverParam::getFirstDistortion(U32 *index, LLPolyMesh **poly_mesh)
+{
+	mCurrentDistortionParam = NULL;
+	const LLVector4a* v = NULL;
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		v = driven->mParam->getFirstDistortion( index, poly_mesh );
+		if( v )
+		{
+			mCurrentDistortionParam = driven->mParam;
+			break;
+		}
+	}
+
+	return v;
+};
+
+const LLVector4a*	LLDriverParam::getNextDistortion(U32 *index, LLPolyMesh **poly_mesh)
+{
+	llassert( mCurrentDistortionParam );
+	if( !mCurrentDistortionParam )
+	{
+		return NULL;
+	}
+
+	LLDrivenEntry* driven = NULL;
+	entry_list_t::iterator iter;
+	
+	// Set mDriven iteration to the right point
+	for( iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		driven = &(*iter);
+		if( driven->mParam == mCurrentDistortionParam )
+		{
+			break;
+		}
+	}
+
+	llassert(driven);
+	if (!driven)
+	{
+		return NULL; // shouldn't happen, but...
+	}
+
+	// We're already in the middle of a param's distortions, so get the next one.
+	const LLVector4a* v = driven->mParam->getNextDistortion( index, poly_mesh );
+	if( (!v) && (iter != mDriven.end()) )
+	{
+		// This param is finished, so start the next param.  It might not have any
+		// distortions, though, so we have to loop to find the next param that does.
+		for( iter++; iter != mDriven.end(); iter++ )
+		{
+			driven = &(*iter);
+			v = driven->mParam->getFirstDistortion( index, poly_mesh );
+			if( v )
+			{
+				mCurrentDistortionParam = driven->mParam;
+				break;
+			}
+		}
+	}
+
+	return v;
+};
+
+S32 LLDriverParam::getDrivenParamsCount() const
+{
+	return mDriven.size();
+}
+
+const LLViewerVisualParam* LLDriverParam::getDrivenParam(S32 index) const
+{
+	if (0 > index || index >= mDriven.size())
+	{
+		return NULL;
+	}
+	return mDriven[index].mParam;
+}
+
+//-----------------------------------------------------------------------------
+// setAnimationTarget()
+//-----------------------------------------------------------------------------
+void LLDriverParam::setAnimationTarget( F32 target_value, BOOL upload_bake )
+{
+	LLVisualParam::setAnimationTarget(target_value, upload_bake);
+
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		F32 driven_weight = getDrivenWeight(driven, mTargetWeight);
+
+		// this isn't normally necessary, as driver params handle interpolation of their driven params
+		// but texture params need to know to assume their final value at beginning of interpolation
+		driven->mParam->setAnimationTarget(driven_weight, upload_bake);
+	}
+}
+
+//-----------------------------------------------------------------------------
+// stopAnimating()
+//-----------------------------------------------------------------------------
+void LLDriverParam::stopAnimating(BOOL upload_bake)
+{
+	LLVisualParam::stopAnimating(upload_bake);
+
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		driven->mParam->setAnimating(FALSE);
+	}
+}
+
+/*virtual*/ 
+BOOL LLDriverParam::linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params)
+{
+	BOOL success = TRUE;
+	LLDriverParamInfo::entry_info_list_t::iterator iter;
+	for (iter = getInfo()->mDrivenInfoList.begin(); iter != getInfo()->mDrivenInfoList.end(); ++iter)
+	{
+		LLDrivenEntryInfo *driven_info = &(*iter);
+		S32 driven_id = driven_info->mDrivenID;
+
+		// check for already existing links. Do not overwrite.
+		BOOL found = FALSE;
+		for (entry_list_t::iterator driven_iter = mDriven.begin(); driven_iter != mDriven.end() && !found; ++driven_iter)
+		{
+			if (driven_iter->mInfo->mDrivenID == driven_id)
+			{
+				found = TRUE;
+			}
+		}
+
+		if (!found)
+		{
+			LLViewerVisualParam* param = (LLViewerVisualParam*)mapper(driven_id);
+			bool push = param && (!only_cross_params || param->getCrossWearable());
+			if (push)
+			{
+				mDriven.push_back(LLDrivenEntry( param, driven_info ));
+			}
+			else
+			{
+				success = FALSE;
+			}
+		}
+	}
+	
+	return success;	
+}
+
+void LLDriverParam::resetDrivenParams()
+{
+	mDriven.clear();
+	mDriven.reserve(getInfo()->mDrivenInfoList.size());
+}
+
+void LLDriverParam::updateCrossDrivenParams(LLWearableType::EType driven_type)
+{
+	bool needs_update = (getWearableType()==driven_type);
+
+	// if the driver has a driven entry for the passed-in wearable type, we need to refresh the value
+	for( entry_list_t::iterator iter = mDriven.begin(); iter != mDriven.end(); iter++ )
+	{
+		LLDrivenEntry* driven = &(*iter);
+		if (driven && driven->mParam && driven->mParam->getCrossWearable() && driven->mParam->getWearableType() == driven_type)
+		{
+			needs_update = true;
+		}
+	}
+
+
+	if (needs_update)
+	{
+		LLWearableType::EType driver_type = (LLWearableType::EType)getWearableType();
+		
+		// If we've gotten here, we've added a new wearable of type "type"
+		// Thus this wearable needs to get updates from the driver wearable.
+		// The call to setVisualParamWeight seems redundant, but is necessary
+		// as the number of driven wearables has changed since the last update. -Nyx
+		LLWearable *wearable = mAvatarAppearance->getWearableData()->getTopWearable(driver_type);
+		if (wearable)
+		{
+			wearable->setVisualParamWeight(mID, wearable->getVisualParamWeight(mID), false);
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// getDrivenWeight()
+//-----------------------------------------------------------------------------
+F32 LLDriverParam::getDrivenWeight(const LLDrivenEntry* driven, F32 input_weight)
+{
+	F32 min_weight = getMinWeight();
+	F32 max_weight = getMaxWeight();
+	const LLDrivenEntryInfo* info = driven->mInfo;
+
+	F32 driven_weight = 0.f;
+	F32 driven_min = driven->mParam->getMinWeight();
+	F32 driven_max = driven->mParam->getMaxWeight();
+
+	if( input_weight <= info->mMin1 )
+	{
+		if( info->mMin1 == info->mMax1 && 
+			info->mMin1 <= min_weight)
+		{
+			driven_weight = driven_max;
+		}
+		else
+		{
+			driven_weight = driven_min;
+		}
+	}
+	else
+	if( input_weight <= info->mMax1 )
+	{
+		F32 t = (input_weight - info->mMin1) / (info->mMax1 - info->mMin1 );
+		driven_weight = driven_min + t * (driven_max - driven_min);
+	}
+	else
+	if( input_weight <= info->mMax2 )
+	{
+		driven_weight = driven_max;
+	}
+	else
+	if( input_weight <= info->mMin2 )
+	{
+		F32 t = (input_weight - info->mMax2) / (info->mMin2 - info->mMax2 );
+		driven_weight = driven_max + t * (driven_min - driven_max);
+	}
+	else
+	{
+		if (info->mMax2 >= max_weight)
+		{
+			driven_weight = driven_max;
+		}
+		else
+		{
+			driven_weight = driven_min;
+		}
+	}
+
+	return driven_weight;
+}
+
+void LLDriverParam::setDrivenWeight(LLDrivenEntry *driven, F32 driven_weight, bool upload_bake)
+{
+	bool use_self = false;
+	if(mWearablep &&
+		mAvatarAppearance->isValid() &&
+		driven->mParam->getCrossWearable())
+	{
+		LLWearable* wearable = dynamic_cast<LLWearable*> (mWearablep);
+		if (mAvatarAppearance->getWearableData()->isOnTop(wearable))
+		{
+			use_self = true;
+		}
+	}
+
+	if (use_self)
+	{
+		// call setWeight through LLVOAvatarSelf so other wearables can be updated with the correct values
+		mAvatarAppearance->setVisualParamWeight( (LLVisualParam*)driven->mParam, driven_weight, upload_bake );
+	}
+	else
+	{
+		driven->mParam->setWeight( driven_weight, upload_bake );
+	}
+}
diff --git a/indra/llappearance/lldriverparam.h b/indra/llappearance/lldriverparam.h
new file mode 100644
index 0000000000..30e71daad9
--- /dev/null
+++ b/indra/llappearance/lldriverparam.h
@@ -0,0 +1,133 @@
+/** 
+ * @file lldriverparam.h
+ * @brief A visual parameter that drives (controls) other visual parameters.
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLDRIVERPARAM_H
+#define LL_LLDRIVERPARAM_H
+
+#include "llviewervisualparam.h"
+#include "llwearabletype.h"
+
+class LLAvatarAppearance;
+class LLDriverParam;
+class LLWearable;
+
+//-----------------------------------------------------------------------------
+
+struct LLDrivenEntryInfo
+{
+	LLDrivenEntryInfo( S32 id, F32 min1, F32 max1, F32 max2, F32 min2 )
+		: mDrivenID( id ), mMin1( min1 ), mMax1( max1 ), mMax2( max2 ), mMin2( min2 ) {}
+	S32					mDrivenID;
+	F32					mMin1;
+	F32					mMax1;
+	F32					mMax2;
+	F32					mMin2;
+};
+
+struct LLDrivenEntry
+{
+	LLDrivenEntry( LLViewerVisualParam* param, LLDrivenEntryInfo *info )
+		: mParam( param ), mInfo( info ) {}
+	LLViewerVisualParam* mParam;
+	LLDrivenEntryInfo*	 mInfo;
+};
+
+//-----------------------------------------------------------------------------
+
+class LLDriverParamInfo : public LLViewerVisualParamInfo
+{
+	friend class LLDriverParam;
+public:
+	LLDriverParamInfo();
+	/*virtual*/ ~LLDriverParamInfo() {};
+	
+	/*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+
+	/*virtual*/ void toStream(std::ostream &out);	
+
+protected:
+	typedef std::deque<LLDrivenEntryInfo> entry_info_list_t;
+	entry_info_list_t mDrivenInfoList;
+	LLDriverParam* mDriverParam; // backpointer
+};
+
+//-----------------------------------------------------------------------------
+
+class LLDriverParam : public LLViewerVisualParam
+{
+private:
+	// Hide the default constructor.  Force construction with LLAvatarAppearance.
+	LLDriverParam() {}
+public:
+	LLDriverParam(LLAvatarAppearance *appearance, LLWearable* wearable = NULL);
+	~LLDriverParam();
+
+	// Special: These functions are overridden by child classes
+	LLDriverParamInfo*		getInfo() const { return (LLDriverParamInfo*)mInfo; }
+	//   This sets mInfo and calls initialization functions
+	BOOL					setInfo(LLDriverParamInfo *info);
+
+	LLAvatarAppearance* getAvatarAppearance() { return mAvatarAppearance; }
+	const LLAvatarAppearance* getAvatarAppearance() const { return mAvatarAppearance; }
+
+	void					updateCrossDrivenParams(LLWearableType::EType driven_type);
+
+	/*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable) const;
+
+	// LLVisualParam Virtual functions
+	/*virtual*/ void				apply( ESex sex ) {} // apply is called separately for each driven param.
+	/*virtual*/ void				setWeight(F32 weight, BOOL upload_bake);
+	/*virtual*/ void				setAnimationTarget( F32 target_value, BOOL upload_bake );
+	/*virtual*/ void				stopAnimating(BOOL upload_bake);
+	/*virtual*/ BOOL				linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params);
+	/*virtual*/ void				resetDrivenParams();
+	
+	// LLViewerVisualParam Virtual functions
+	/*virtual*/ F32					getTotalDistortion();
+	/*virtual*/ const LLVector4a&	getAvgDistortion();
+	/*virtual*/ F32					getMaxDistortion();
+	/*virtual*/ LLVector4a			getVertexDistortion(S32 index, LLPolyMesh *poly_mesh);
+	/*virtual*/ const LLVector4a*	getFirstDistortion(U32 *index, LLPolyMesh **poly_mesh);
+	/*virtual*/ const LLVector4a*	getNextDistortion(U32 *index, LLPolyMesh **poly_mesh);
+
+	S32								getDrivenParamsCount() const;
+	const LLViewerVisualParam*		getDrivenParam(S32 index) const;
+
+protected:
+	F32 getDrivenWeight(const LLDrivenEntry* driven, F32 input_weight);
+	void setDrivenWeight(LLDrivenEntry *driven, F32 driven_weight, bool upload_bake);
+
+
+	LLVector4a	mDefaultVec; // temp holder
+	typedef std::vector<LLDrivenEntry> entry_list_t;
+	entry_list_t mDriven;
+	LLViewerVisualParam* mCurrentDistortionParam;
+	// Backlink only; don't make this an LLPointer.
+	LLAvatarAppearance* mAvatarAppearance;
+	LLWearable* mWearablep;
+};
+
+#endif  // LL_LLDRIVERPARAM_H
diff --git a/indra/llappearance/lltexlayer.cpp b/indra/llappearance/lltexlayer.cpp
index a741a83af7..9b70f737a0 100644
--- a/indra/llappearance/lltexlayer.cpp
+++ b/indra/llappearance/lltexlayer.cpp
@@ -40,6 +40,7 @@
 #include "lltexturemanagerbridge.h"
 #include "llui.h"
 #include "llwearable.h"
+#include "llwearabledata.h"
 #include "llvertexbuffer.h"
 #include "llviewervisualparam.h"
 
@@ -1560,11 +1561,11 @@ U32 LLTexLayerTemplate::updateWearableCache() const
 		return 0;
 	}
 	LLWearableType::EType wearable_type = LLAvatarAppearanceDictionary::getTEWearableType((ETextureIndex)te);
-	U32 num_wearables = getAvatarAppearance()->getWearableCount(wearable_type);
+	U32 num_wearables = getAvatarAppearance()->getWearableData()->getWearableCount(wearable_type);
 	U32 added = 0;
 	for (U32 i = 0; i < num_wearables; i++)
 	{
-		LLWearable*  wearable = getAvatarAppearance()->getWearable(wearable_type, i);
+		LLWearable*  wearable = getAvatarAppearance()->getWearableData()->getWearable(wearable_type, i);
 		if (!wearable)
 		{
 			continue;
diff --git a/indra/llappearance/llwearable.h b/indra/llappearance/llwearable.h
index 8a99debac8..e1cd26bdef 100644
--- a/indra/llappearance/llwearable.h
+++ b/indra/llappearance/llwearable.h
@@ -33,6 +33,7 @@
 #include "llwearabletype.h"
 #include "lllocaltextureobject.h"
 
+class LLMD5;
 class LLVisualParam;
 class LLTexGlobalColorInfo;
 class LLTexGlobalColor;
@@ -98,6 +99,12 @@ public:
 	typedef std::map<S32, LLUUID> texture_id_map_t;
 	const texture_id_map_t& getTextureIDMap() const { return mTextureIDMap; }
 
+	// Something happened that requires the wearable to be updated (e.g. worn/unworn).
+	virtual void		setUpdated() const = 0;
+
+	// Update the baked texture hash.
+	virtual void		addToBakedTextureHash(LLMD5& hash) const = 0;
+
 protected:
 	virtual void 	createVisualParams() = 0;
 
diff --git a/indra/llappearance/llwearabledata.cpp b/indra/llappearance/llwearabledata.cpp
new file mode 100644
index 0000000000..d70bbf286a
--- /dev/null
+++ b/indra/llappearance/llwearabledata.cpp
@@ -0,0 +1,353 @@
+/** 
+ * @file llwearabledata.cpp
+ * @brief LLWearableData class implementation
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llwearabledata.h"
+
+#include "llavatarappearance.h"
+#include "llavatarappearancedefines.h"
+#include "lldriverparam.h"
+#include "llmd5.h"
+
+LLWearableData::LLWearableData() :
+	mAvatarAppearance(NULL)
+{
+}
+
+// virtual
+LLWearableData::~LLWearableData()
+{
+}
+
+using namespace LLAvatarAppearanceDefines;
+
+LLWearable* LLWearableData::getWearable(const LLWearableType::EType type, U32 index)
+{
+	wearableentry_map_t::iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		return NULL;
+	}
+	wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	if (index>=wearable_vec.size())
+	{
+		return NULL;
+	}
+	else
+	{
+		return wearable_vec[index];
+	}
+}
+
+void LLWearableData::setWearable(const LLWearableType::EType type, U32 index, LLWearable *wearable)
+{
+	LLWearable *old_wearable = getWearable(type,index);
+	if (!old_wearable)
+	{
+		pushWearable(type,wearable);
+		return;
+	}
+	
+	wearableentry_map_t::iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		llwarns << "invalid type, type " << type << " index " << index << llendl; 
+		return;
+	}
+	wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	if (index>=wearable_vec.size())
+	{
+		llwarns << "invalid index, type " << type << " index " << index << llendl; 
+	}
+	else
+	{
+		wearable_vec[index] = wearable;
+		old_wearable->setUpdated();
+		const BOOL removed = FALSE;
+		wearableUpdated(wearable, removed);
+	}
+}
+
+U32 LLWearableData::pushWearable(const LLWearableType::EType type, 
+								   LLWearable *wearable,
+								   bool trigger_updated /* = true */)
+{
+	if (wearable == NULL)
+	{
+		// no null wearables please!
+		llwarns << "Null wearable sent for type " << type << llendl;
+		return MAX_CLOTHING_PER_TYPE;
+	}
+	if (type < LLWearableType::WT_COUNT || mWearableDatas[type].size() < MAX_CLOTHING_PER_TYPE)
+	{
+		mWearableDatas[type].push_back(wearable);
+		if (trigger_updated)
+		{
+			const BOOL removed = FALSE;
+			wearableUpdated(wearable, removed);
+		}
+		return mWearableDatas[type].size()-1;
+	}
+	return MAX_CLOTHING_PER_TYPE;
+}
+
+// virtual
+void LLWearableData::wearableUpdated(LLWearable *wearable, BOOL removed)
+{
+	wearable->setUpdated();
+	if (!removed)
+	{
+		pullCrossWearableValues(wearable->getType());
+	}
+}
+
+void LLWearableData::popWearable(LLWearable *wearable)
+{
+	if (wearable == NULL)
+	{
+		// nothing to do here. move along.
+		return;
+	}
+
+	U32 index = getWearableIndex(wearable);
+	const LLWearableType::EType type = wearable->getType();
+
+	if (index < MAX_CLOTHING_PER_TYPE && index < getWearableCount(type))
+	{
+		popWearable(type, index);
+	}
+}
+
+void LLWearableData::popWearable(const LLWearableType::EType type, U32 index)
+{
+	LLWearable *wearable = getWearable(type, index);
+	if (wearable)
+	{
+		mWearableDatas[type].erase(mWearableDatas[type].begin() + index);
+		const BOOL removed = TRUE;
+		wearableUpdated(wearable, removed);
+	}
+}
+
+void LLWearableData::clearWearableType(const LLWearableType::EType type)
+{
+	wearableentry_map_t::iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		return;
+	}
+	wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	wearable_vec.clear();
+}
+
+bool LLWearableData::swapWearables(const LLWearableType::EType type, U32 index_a, U32 index_b)
+{
+	wearableentry_map_t::iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		return false;
+	}
+
+	wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	if (0 > index_a || index_a >= wearable_vec.size()) return false;
+	if (0 > index_b || index_b >= wearable_vec.size()) return false;
+
+	LLWearable* wearable = wearable_vec[index_a];
+	wearable_vec[index_a] = wearable_vec[index_b];
+	wearable_vec[index_b] = wearable;
+	return true;
+}
+
+void LLWearableData::pullCrossWearableValues(const LLWearableType::EType type)
+{
+	llassert(mAvatarAppearance);
+	// scan through all of the avatar's visual parameters
+	for (LLViewerVisualParam* param = (LLViewerVisualParam*) mAvatarAppearance->getFirstVisualParam(); 
+		 param;
+		 param = (LLViewerVisualParam*) mAvatarAppearance->getNextVisualParam())
+	{
+		if( param )
+		{
+			LLDriverParam *driver_param = dynamic_cast<LLDriverParam*>(param);
+			if(driver_param)
+			{
+				// parameter is a driver parameter, have it update its cross-driven params
+				driver_param->updateCrossDrivenParams(type);
+			}
+		}
+	}
+}
+
+
+U32	LLWearableData::getWearableIndex(const LLWearable *wearable) const
+{
+	if (wearable == NULL)
+	{
+		return MAX_CLOTHING_PER_TYPE;
+	}
+
+	const LLWearableType::EType type = wearable->getType();
+	wearableentry_map_t::const_iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		llwarns << "tried to get wearable index with an invalid type!" << llendl;
+		return MAX_CLOTHING_PER_TYPE;
+	}
+	const wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	for(U32 index = 0; index < wearable_vec.size(); index++)
+	{
+		if (wearable_vec[index] == wearable)
+		{
+			return index;
+		}
+	}
+
+	return MAX_CLOTHING_PER_TYPE;
+}
+
+BOOL LLWearableData::isOnTop(LLWearable* wearable) const
+{
+	if (!wearable) return FALSE;
+	const LLWearableType::EType type = wearable->getType();
+	return ( getTopWearable(type) == wearable );
+}
+
+const LLWearable* LLWearableData::getWearable(const LLWearableType::EType type, U32 index) const
+{
+	wearableentry_map_t::const_iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		return NULL;
+	}
+	const wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	if (index>=wearable_vec.size())
+	{
+		return NULL;
+	}
+	else
+	{
+		return wearable_vec[index];
+	}
+}
+
+LLWearable* LLWearableData::getTopWearable(const LLWearableType::EType type)
+{
+	U32 count = getWearableCount(type);
+	if ( count == 0)
+	{
+		return NULL;
+	}
+
+	return getWearable(type, count-1);
+}
+
+const LLWearable* LLWearableData::getTopWearable(const LLWearableType::EType type) const
+{
+	U32 count = getWearableCount(type);
+	if ( count == 0)
+	{
+		return NULL;
+	}
+
+	return getWearable(type, count-1);
+}
+
+LLWearable* LLWearableData::getBottomWearable(const LLWearableType::EType type)
+{
+	if (getWearableCount(type) == 0)
+	{
+		return NULL;
+	}
+
+	return getWearable(type, 0);
+}
+
+const LLWearable* LLWearableData::getBottomWearable(const LLWearableType::EType type) const
+{
+	if (getWearableCount(type) == 0)
+	{
+		return NULL;
+	}
+
+	return getWearable(type, 0);
+}
+
+U32 LLWearableData::getWearableCount(const LLWearableType::EType type) const
+{
+	wearableentry_map_t::const_iterator wearable_iter = mWearableDatas.find(type);
+	if (wearable_iter == mWearableDatas.end())
+	{
+		return 0;
+	}
+	const wearableentry_vec_t& wearable_vec = wearable_iter->second;
+	return wearable_vec.size();
+}
+
+U32 LLWearableData::getWearableCount(const U32 tex_index) const
+{
+	const LLWearableType::EType wearable_type = LLAvatarAppearanceDictionary::getTEWearableType((LLAvatarAppearanceDefines::ETextureIndex)tex_index);
+	return getWearableCount(wearable_type);
+}
+
+LLUUID LLWearableData::computeBakedTextureHash(LLAvatarAppearanceDefines::EBakedTextureIndex baked_index,
+												 BOOL generate_valid_hash) // Set to false if you want to upload the baked texture w/o putting it in the cache
+{
+	LLUUID hash_id;
+	bool hash_computed = false;
+	LLMD5 hash;
+	const LLAvatarAppearanceDictionary::BakedEntry *baked_dict = LLAvatarAppearanceDictionary::getInstance()->getBakedTexture(baked_index);
+
+	for (U8 i=0; i < baked_dict->mWearables.size(); i++)
+	{
+		const LLWearableType::EType baked_type = baked_dict->mWearables[i];
+		const U32 num_wearables = getWearableCount(baked_type);
+		for (U32 index = 0; index < num_wearables; ++index)
+		{
+			const LLWearable* wearable = getWearable(baked_type,index);
+			if (wearable)
+			{
+				wearable->addToBakedTextureHash(hash);
+				hash_computed = true;
+			}
+		}
+	}
+	if (hash_computed)
+	{
+		hash.update((const unsigned char*)baked_dict->mWearablesHashID.mData, UUID_BYTES);
+
+		if (!generate_valid_hash)
+		{
+			invalidateBakedTextureHash(hash);
+		}
+		hash.finalize();
+		hash.raw_digest(hash_id.mData);
+	}
+
+	return hash_id;
+}
+
+
diff --git a/indra/llappearance/llwearabledata.h b/indra/llappearance/llwearabledata.h
new file mode 100644
index 0000000000..2931424131
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+++ b/indra/llappearance/llwearabledata.h
@@ -0,0 +1,108 @@
+/** 
+ * @file llwearabledata.h
+ * @brief LLWearableData class header file
+ *
+ * $LicenseInfo:firstyear=20012license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_WEARABLEDATA_H
+#define LL_WEARABLEDATA_H
+
+#include "llavatarappearancedefines.h"
+#include "llerror.h"
+
+class LLAvatarAppearance;
+
+class LLWearableData
+{
+	// *TODO: Figure out why this is causing compile error.
+	//LOG_CLASS(LLWearableData);
+
+	//--------------------------------------------------------------------
+	// Constructors / destructors / Initializers
+	//--------------------------------------------------------------------
+public:
+	LLWearableData();
+	virtual ~LLWearableData();
+
+	void setAvatarAppearance(LLAvatarAppearance* appearance) { mAvatarAppearance = appearance; }
+
+protected:
+	//--------------------------------------------------------------------
+	// Accessors
+	//--------------------------------------------------------------------
+public:
+	LLWearable*			getWearable(const LLWearableType::EType type, U32 index /*= 0*/); 
+	const LLWearable* 	getWearable(const LLWearableType::EType type, U32 index /*= 0*/) const;
+	LLWearable*			getTopWearable(const LLWearableType::EType type);
+	const LLWearable*	getTopWearable(const LLWearableType::EType type) const;
+	LLWearable*			getBottomWearable(const LLWearableType::EType type);
+	const LLWearable*	getBottomWearable(const LLWearableType::EType type) const;
+	U32				getWearableCount(const LLWearableType::EType type) const;
+	U32				getWearableCount(const U32 tex_index) const;
+	U32				getWearableIndex(const LLWearable *wearable) const;
+
+	BOOL			isOnTop(LLWearable* wearable) const;
+
+	static const U32 MAX_CLOTHING_PER_TYPE = 5; 
+
+	//--------------------------------------------------------------------
+	// Setters
+	//--------------------------------------------------------------------
+protected:
+	// Low-level data structure setter - public access is via setWearableItem, etc.
+	void 			setWearable(const LLWearableType::EType type, U32 index, LLWearable *wearable);
+	U32 			pushWearable(const LLWearableType::EType type, LLWearable *wearable, 
+								 bool trigger_updated = true);
+	virtual void	wearableUpdated(LLWearable *wearable, BOOL removed);
+	void 			popWearable(LLWearable *wearable);
+	void			popWearable(const LLWearableType::EType type, U32 index);
+	void			clearWearableType(const LLWearableType::EType type);
+	bool			swapWearables(const LLWearableType::EType type, U32 index_a, U32 index_b);
+
+private:
+	void			pullCrossWearableValues(const LLWearableType::EType type);
+
+	//--------------------------------------------------------------------
+	// Server Communication
+	//--------------------------------------------------------------------
+public:
+	LLUUID			computeBakedTextureHash(LLAvatarAppearanceDefines::EBakedTextureIndex baked_index,
+											BOOL generate_valid_hash = TRUE);
+protected:
+	virtual void	invalidateBakedTextureHash(LLMD5& hash) const {}
+
+	//--------------------------------------------------------------------
+	// Member variables
+	//--------------------------------------------------------------------
+private:
+	LLAvatarAppearance* mAvatarAppearance;
+	typedef std::vector<LLWearable*> wearableentry_vec_t; // all wearables of a certain type (EG all shirts)
+	typedef std::map<LLWearableType::EType, wearableentry_vec_t> wearableentry_map_t;	// wearable "categories" arranged by wearable type
+	wearableentry_map_t mWearableDatas;
+
+};
+
+
+
+#endif // LL_WEARABLEDATA_H
+