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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Additional permissions under GNU GPL version 3 section 7
If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef plAnimPath_inc
#define plAnimPath_inc
#include "hsTemplates.h"
#include "hsGeometry3.h"
#include "hsMatrix44.h"
#include "../plTransform/hsAffineParts.h"
#include "../pnFactory/plCreatable.h"
class plCompoundController;
class plAnimPath : public plCreatable
{
public:
enum Flags
{
kNone = 0x0,
kFavorFwdSearch = 0x1, // only move fwd on the curve when searching
kFavorBwdSearch = 0x2, // only move bwd on the curve when searching
kCalcPosOnly = 0x4, // only compute pos when calling SetCurTime()
kFarthest = 0x8,
kWrap = 0x10,
kIncrement = 0x20, // find the nearest / farthest point, but increment toward it
};
protected:
// The final product info
hsMatrix44 fXform;
hsPoint3 fPos;
hsVector3 fVel;
hsVector3 fAccel;
hsScalar fTime; // presumably seconds
// The paramters (and options) for this curve.
UInt32 fAnimPathFlags; // currently set at runtime only
hsScalar fMinDistSq;
hsScalar fLength; // presumably seconds
// Controller stuff only works in local space.
hsMatrix44 fLocalToWorld;
hsMatrix44 fWorldToLocal;
// Bounding sphere available for ignoring out of range
hsPoint3 fCenter;
hsScalar fRadius;
plCompoundController* fController;
hsAffineParts fParts;
// These are temps during a search. They're here to avoid recalc.
mutable hsScalar fLastTime;
mutable hsScalar fLastDistSq;
mutable hsScalar fThisTime;
mutable hsScalar fThisDistSq;
mutable hsScalar fNextTime;
mutable hsScalar fNextDistSq;
mutable hsScalar fDelTime;
mutable hsPoint3 fPrevPos, fCurPos;
void ICalcBounds();
hsScalar ICalcTotalLength();
hsScalar IShiftFore(hsPoint3 &pt) const;
hsScalar IShiftBack(hsPoint3 &pt) const;
hsScalar ISubDivFore(hsPoint3 &pt) const;
hsScalar ISubDivBack(hsPoint3 &pt) const;
void IInitInterval(hsScalar time, hsScalar delTime, hsPoint3 &pt) const;
hsScalar ICheckInterval(hsPoint3 &pt) const;
hsScalar IBestTime() const { return fLastDistSq < fThisDistSq
? (fLastDistSq < fNextDistSq
? fLastTime
: fNextTime)
: (fThisDistSq < fNextDistSq
? fThisTime
: fNextTime); }
// Visualization helper
void IMakeSegment(hsTArray<UInt16>& idx, hsTArray<hsPoint3>& pos,
hsPoint3& p1, hsPoint3& p2);
// For computing arclen
struct ArcLenDeltaInfo
{
hsScalar fT;
hsScalar fArcLenDelta; // arc len distance from prev sample point (array entry)
ArcLenDeltaInfo(hsScalar t, hsScalar del) : fT(t),fArcLenDelta(del) {}
ArcLenDeltaInfo() : fT(0),fArcLenDelta(0) {}
};
hsTArray<ArcLenDeltaInfo> fArcLenDeltas;
public:
plAnimPath();
virtual ~plAnimPath();
CLASSNAME_REGISTER( plAnimPath );
GETINTERFACE_ANY( plAnimPath, plCreatable );
void Reset();
void SetTransform(const hsMatrix44& l2w, const hsMatrix44& w2l);
const hsMatrix44& GetLocalToWorld() const { return fLocalToWorld; }
const hsMatrix44& GetWorldToLocal() const { return fWorldToLocal; }
// Visualization helper
void MakeDrawList(hsTArray<UInt16>& idx, hsTArray<hsPoint3>& pos);
void SetAnimPathFlags(UInt32 f) { fAnimPathFlags=f; }
UInt32 GetAnimPathFlags() const { return fAnimPathFlags; }
void SetWrap(hsBool on) { if(on)fAnimPathFlags |= kWrap; else fAnimPathFlags &= ~kWrap; }
hsBool GetWrap() const { return 0 != (fAnimPathFlags & kWrap); }
void SetFarthest(hsBool on) { if(on)fAnimPathFlags |= kFarthest; else fAnimPathFlags &= ~kFarthest; }
hsBool GetFarthest() const { return 0 != (fAnimPathFlags & kFarthest); }
void SetCurTime(hsScalar t, UInt32 calcFlags=0);
hsScalar GetCurTime() const { return fTime; }
void SetController(plCompoundController* tmc);
plCompoundController* GetController() const { return fController; }
hsScalar GetLength() const { return fLength; } // seconds
void SetMinDistance(hsScalar d) { fMinDistSq = d*d; }
hsScalar GetMinDistance() const { return hsSquareRoot(fMinDistSq); }
hsMatrix44* GetMatrix44(hsMatrix44* xOut) const { *xOut = fXform; return xOut; }
hsPoint3* GetPosition(hsPoint3* pOut) const { *pOut = fPos; return pOut; }
hsVector3* GetVelocity(hsVector3* vOut) const { *vOut = fVel; return vOut; }
hsVector3* GetDirection(hsVector3* dOut) const { dOut->Set(fXform.fMap[0][2], fXform.fMap[1][2], fXform.fMap[2][2]); return dOut; }
hsVector3* GetUp(hsVector3* uOut) const { uOut->Set(fXform.fMap[0][1], fXform.fMap[1][1], fXform.fMap[2][1]); return uOut; }
hsVector3* GetAcceleration(hsVector3* aOut) const { *aOut = fAccel; return aOut; }
hsBool OutOfRange(hsPoint3 &pt, hsScalar range) const;
const hsAffineParts* Parts() const { return &fParts; }
void InitParts(const hsAffineParts& p) { fParts = p; }
hsScalar GetExtremePoint(hsPoint3 &worldPt) const; // Exhaustive search
hsScalar GetExtremePoint(hsScalar lastTime, hsScalar delTime, hsPoint3 &worldPt) const; // Incremental search
// for arclen usage
void ComputeArcLenDeltas(Int32 numSamples=256);
hsScalar GetLookAheadTime(hsScalar startTime, hsScalar arcLength, hsBool bwd, Int32* startSrchIdx);
virtual void Read(hsStream* s, hsResMgr* mgr);
virtual void Write(hsStream* s, hsResMgr* mgr);
};
#endif plAnimPath_inc