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/**
* @file llflexibleobject.h
* @author JJ Ventrella, Andrew Meadows, Tom Yedwab
* @brief Flexible object definition
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
/**
* This is for specifying objects in the world that are animated and
* rendered locally - on the viewer. Flexible Objects are linear arrays
* of positions, which stay at a fixed distance from each other. One
* position is fixed as an "anchor" and is attached to some other object
* in the world, determined by the server. All the other positions are
* updated according to local physics.
*/
#ifndef LL_LLFLEXIBLEOBJECT_H
#define LL_LLFLEXIBLEOBJECT_H
#include "llprimitive.h"
#include "llvovolume.h"
#include "llwind.h"
// 10 ms for the whole thing!
const F32 FLEXIBLE_OBJECT_TIMESLICE = 0.003f;
const U32 FLEXIBLE_OBJECT_MAX_LOD = 10;
// See llprimitive.h for LLFlexibleObjectData and DEFAULT/MIN/MAX values
//-------------------------------------------------------------------
struct LLFlexibleObjectSection
{
// Input parameters
LLVector2 mScale;
LLQuaternion mAxisRotation;
// Simulated state
LLVector3 mPosition;
LLVector3 mVelocity;
LLVector3 mDirection;
LLQuaternion mRotation;
// Derivatives (Not all currently used, will come back with LLVolume changes to automagically generate normals)
LLVector3 mdPosition;
//LLMatrix4 mRotScale;
//LLMatrix4 mdRotScale;
};
//---------------------------------------------------------
// The LLVolumeImplFlexible class
//---------------------------------------------------------
class LLVolumeImplFlexible : public LLVolumeInterface
{
private:
static std::vector<LLVolumeImplFlexible*> sInstanceList;
S32 mInstanceIndex;
public:
static void updateClass();
LLVolumeImplFlexible(LLViewerObject* volume, LLFlexibleObjectData* attributes);
~LLVolumeImplFlexible();
// Implements LLVolumeInterface
U32 getID() const { return mID; }
LLVector3 getFramePosition() const;
LLQuaternion getFrameRotation() const;
LLVolumeInterfaceType getInterfaceType() const { return INTERFACE_FLEXIBLE; }
void updateRenderRes();
void doIdleUpdate();
bool doUpdateGeometry(LLDrawable *drawable);
LLVector3 getPivotPosition() const;
void onSetVolume(const LLVolumeParams &volume_params, const S32 detail);
void onSetScale(const LLVector3 &scale, bool damped);
void onParameterChanged(U16 param_type, LLNetworkData *data, bool in_use, bool local_origin);
void onShift(const LLVector4a &shift_vector);
bool isVolumeUnique() const { return true; }
bool isVolumeGlobal() const { return true; }
bool isActive() const { return true; }
const LLMatrix4& getWorldMatrix(LLXformMatrix* xform) const;
void updateRelativeXform(bool force_identity);
void doFlexibleUpdate(); // Called to update the simulation
void doFlexibleRebuild(bool rebuild_volume); // Called to rebuild the geometry
void preRebuild();
//void setAttributes( LLFlexibleObjectData );
void setParentPositionAndRotationDirectly( LLVector3 p, LLQuaternion r );
void setUsingCollisionSphere( bool u );
void setCollisionSphere( LLVector3 position, F32 radius );
void setRenderingCollisionSphere( bool r);
LLVector3 getEndPosition();
LLQuaternion getEndRotation();
LLVector3 getNodePosition( int nodeIndex );
LLVector3 getAnchorPosition() const;
private:
//--------------------------------------
// private members
//--------------------------------------
// Backlink only; don't make this an LLPointer.
LLViewerObject* mVO;
LLTimer mTimer;
LLVector3 mAnchorPosition;
LLVector3 mParentPosition;
LLQuaternion mParentRotation;
LLQuaternion mLastFrameRotation;
LLQuaternion mLastSegmentRotation;
bool mInitialized;
bool mUpdated;
LLFlexibleObjectData* mAttributes;
LLFlexibleObjectSection mSection [ (1<<FLEXIBLE_OBJECT_MAX_SECTIONS)+1 ];
S32 mInitializedRes;
S32 mSimulateRes;
S32 mRenderRes;
U64 mLastFrameNum;
U32 mLastUpdatePeriod;
LLVector3 mCollisionSpherePosition;
F32 mCollisionSphereRadius;
U32 mID;
//--------------------------------------
// private methods
//--------------------------------------
void setAttributesOfAllSections (LLVector3* inScale = NULL);
void remapSections(LLFlexibleObjectSection *source, S32 source_sections,
LLFlexibleObjectSection *dest, S32 dest_sections);
public:
// Global setting for update rate
static F32 sUpdateFactor;
};// end of class definition
#endif // LL_LLFLEXIBLEOBJECT_H
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