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/**
* @file llmodel.h
* @brief Model handling class definitions
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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_LLMODEL_H
#define LL_LLMODEL_H
#include "llpointer.h"
#include "llvolume.h"
#include "v4math.h"
#include "m4math.h"
class daeElement;
class domMesh;
#define MAX_MODEL_FACES 8
class LLMeshSkinInfo
{
public:
LLUUID mMeshID;
std::vector<std::string> mJointNames;
std::vector<LLMatrix4> mInvBindMatrix;
std::vector<LLMatrix4> mAlternateBindMatrix;
std::map<std::string, U32> mJointMap;
LLMeshSkinInfo() { }
LLMeshSkinInfo(LLSD& data);
void fromLLSD(LLSD& data);
LLSD asLLSD(bool include_joints) const;
LLMatrix4 mBindShapeMatrix;
float mPelvisOffset;
};
class LLModel : public LLVolume
{
public:
enum
{
LOD_IMPOSTOR = 0,
LOD_LOW,
LOD_MEDIUM,
LOD_HIGH,
LOD_PHYSICS,
NUM_LODS
};
//convex_hull_decomposition is a vector of convex hulls
//each convex hull is a set of points
typedef std::vector<std::vector<LLVector3> > convex_hull_decomposition;
typedef std::vector<LLVector3> hull;
class PhysicsMesh
{
public:
std::vector<LLVector3> mPositions;
std::vector<LLVector3> mNormals;
void clear()
{
mPositions.clear();
mNormals.clear();
}
bool empty() const
{
return mPositions.empty();
}
};
class Decomposition
{
public:
Decomposition() { }
Decomposition(LLSD& data);
void fromLLSD(LLSD& data);
LLSD asLLSD() const;
void merge(const Decomposition* rhs);
LLUUID mMeshID;
LLModel::convex_hull_decomposition mHull;
LLModel::hull mBaseHull;
std::vector<LLModel::PhysicsMesh> mMesh;
LLModel::PhysicsMesh mBaseHullMesh;
LLModel::PhysicsMesh mPhysicsShapeMesh;
};
LLModel(LLVolumeParams& params, F32 detail);
~LLModel();
bool loadModel(std::istream& is);
bool loadSkinInfo(LLSD& header, std::istream& is);
bool loadDecomposition(LLSD& header, std::istream& is);
static LLSD writeModel(
std::ostream& ostr,
LLModel* physics,
LLModel* high,
LLModel* medium,
LLModel* low,
LLModel* imposotr,
const LLModel::Decomposition& decomp,
BOOL upload_skin,
BOOL upload_joints,
BOOL nowrite = FALSE);
static LLSD writeModelToStream(
std::ostream& ostr,
LLSD& mdl,
BOOL nowrite = FALSE);
static LLModel* loadModelFromDomMesh(domMesh* mesh);
static std::string getElementLabel(daeElement* element);
std::string getName() const;
void appendFaces(LLModel* model, LLMatrix4& transform, LLMatrix4& normal_transform);
void appendFace(const LLVolumeFace& src_face, std::string src_material, LLMatrix4& mat, LLMatrix4& norm_mat);
void setNumVolumeFaces(S32 count);
void setVolumeFaceData(
S32 f,
LLStrider<LLVector3> pos,
LLStrider<LLVector3> norm,
LLStrider<LLVector2> tc,
LLStrider<U16> ind,
U32 num_verts,
U32 num_indices);
void generateNormals(F32 angle_cutoff);
void addFace(const LLVolumeFace& face);
void normalizeVolumeFaces();
void optimizeVolumeFaces();
void offsetMesh( const LLVector3& pivotPoint );
void getNormalizedScaleTranslation(LLVector3& scale_out, LLVector3& translation_out);
std::vector<std::string> mMaterialList;
//data used for skin weights
class JointWeight
{
public:
S32 mJointIdx;
F32 mWeight;
JointWeight()
{
mJointIdx = 0;
mWeight = 0.f;
}
JointWeight(S32 idx, F32 weight)
: mJointIdx(idx), mWeight(weight)
{
}
bool operator<(const JointWeight& rhs) const
{
if (mWeight == rhs.mWeight)
{
return mJointIdx < rhs.mJointIdx;
}
return mWeight < rhs.mWeight;
}
};
struct CompareWeightGreater
{
bool operator()(const JointWeight& lhs, const JointWeight& rhs)
{
return rhs < lhs; // strongest = first
}
};
//copy of position array for this model -- mPosition[idx].mV[X,Y,Z]
std::vector<LLVector3> mPosition;
//map of positions to skin weights --- mSkinWeights[pos].mV[0..4] == <joint_index>.<weight>
//joint_index corresponds to mJointList
typedef std::vector<JointWeight> weight_list;
typedef std::map<LLVector3, weight_list > weight_map;
weight_map mSkinWeights;
//get list of weight influences closest to given position
weight_list& getJointInfluences(const LLVector3& pos);
LLMeshSkinInfo mSkinInfo;
std::string mRequestedLabel; // name requested in UI, if any.
std::string mLabel; // name computed from dae.
LLVector3 mNormalizedScale;
LLVector3 mNormalizedTranslation;
float mPelvisOffset;
// convex hull decomposition
S32 mDecompID;
void setConvexHullDecomposition(
const convex_hull_decomposition& decomp);
void updateHullCenters();
LLVector3 mCenterOfHullCenters;
std::vector<LLVector3> mHullCenter;
U32 mHullPoints;
//ID for storing this model in a .slm file
S32 mLocalID;
Decomposition mPhysics;
protected:
void addVolumeFacesFromDomMesh(domMesh* mesh);
virtual BOOL createVolumeFacesFromDomMesh(domMesh *mesh);
};
#endif //LL_LLMODEL_H
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