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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/>.
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