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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 plCullTree_inc
#define plCullTree_inc
#include "hsBounds.h"
#include "hsGeometry3.h"
#include "hsBitVector.h"
#include "plCuller.h"
#include "plScene/plCullPoly.h"
#ifdef HS_DEBUGGING
#define DEBUG_POINTERS
#endif // HS_DEBUGGING
class plCullTree;
class plCullNode;
// for vis
struct hsPoint3;
struct hsVector3;
struct hsColorRGBA;
class plCullTree : public plCuller
{
protected:
// Visualization stuff, to be nuked from production version.
mutable hsBool fCapturePolys;
mutable hsTArray<hsPoint3> fVisVerts;
mutable hsTArray<hsVector3> fVisNorms;
mutable hsTArray<hsColorRGBA> fVisColors;
mutable hsTArray<uint16_t> fVisTris;
mutable float fVisYon;
mutable hsTArray<plCullPoly> fScratchPolys;
mutable hsLargeArray<int16_t> fScratchClear;
mutable hsLargeArray<int16_t> fScratchSplit;
mutable hsLargeArray<int16_t> fScratchCulled;
mutable hsBitVector fScratchBitVec;
mutable hsBitVector fScratchTotVec;
void IVisPolyShape(const plCullPoly& poly, hsBool dark) const;
void IVisPolyEdge(const hsPoint3& p0, const hsPoint3& p1, hsBool dark) const;
void IVisPoly(const plCullPoly& poly, hsBool dark) const;
hsPoint3 fViewPos;
int16_t fRoot;
mutable hsTArray<plCullNode> fNodeList; // Scratch list we make the tree from.
plCullNode* IGetRoot() const { return IGetNode(fRoot); }
plCullNode* IGetNode(int16_t i) const { return i >= 0 ? &fNodeList[i] : nil; }
void ITestNode(const plSpaceTree* space, int16_t who, hsTArray<int16_t>& outList) const; // Appends to outlist
void ITestList(const plSpaceTree* space, const hsTArray<int16_t>& inList, hsTArray<int16_t>& outList) const;
int16_t IAddPolyRecur(const plCullPoly& poly, int16_t iNode);
int16_t IMakeHoleSubTree(const plCullPoly& poly) const;
int16_t IMakePolySubTree(const plCullPoly& poly) const;
int16_t IMakePolyNode(const plCullPoly& poly, int i0, int i1) const;
// Some scratch areas for the nodes use when building the tree etc.
hsTArray<plCullPoly>& ScratchPolys() const { return fScratchPolys; }
hsLargeArray<int16_t>& ScratchClear() const { return fScratchClear; }
hsLargeArray<int16_t>& ScratchSplit() const { return fScratchSplit; }
hsLargeArray<int16_t>& ScratchCulled() const { return fScratchCulled; }
hsBitVector& ScratchBitVec() const { return fScratchBitVec; }
hsBitVector& ScratchTotVec() const { return fScratchTotVec; }
void ISetupScratch(uint16_t nNodes);
friend class plCullNode;
public:
plCullTree();
~plCullTree();
void Reset(); // Called before starting to add polys for this frame.
void InitFrustum(const hsMatrix44& world2NDC);
void SetViewPos(const hsPoint3& pos);
void AddPoly(const plCullPoly& poly);
uint32_t GetNumNodes() const { return fNodeList.GetCount(); }
virtual void Harvest(const plSpaceTree* space, hsTArray<int16_t>& outList) const;
virtual hsBool BoundsVisible(const hsBounds3Ext& bnd) const;
virtual hsBool SphereVisible(const hsPoint3& center, float rad) const;
// Visualization stuff. Only to be called by the pipeline (or some other vis manager).
void SetVisualizationYon(float y) const { fVisYon = y; }
void BeginCapturePolys() const { fCapturePolys = true; }
void EndCapturePolys() const { fCapturePolys = false; }
hsTArray<hsPoint3>& GetCaptureVerts() const { return fVisVerts; }
hsTArray<hsVector3>& GetCaptureNorms() const { return fVisNorms; }
hsTArray<hsColorRGBA>& GetCaptureColors() const { return fVisColors; }
hsTArray<uint16_t>& GetCaptureTris() const { return fVisTris; }
void ReleaseCapture() const;
};
class plCullNode
{
public:
enum plCullStatus
{
kClear,
kCulled,
kSplit,
kPureSplit
};
protected:
hsVector3 fNorm;
float fDist;
hsBool fIsFace;
int16_t fInnerChild;
int16_t fOuterChild;
const plCullTree* fTree;
plCullNode* IGetNode(int16_t i) const;
#ifdef DEBUG_POINTERS
mutable plCullNode* fInnerPtr;
mutable plCullNode* fOuterPtr;
void ISetPointersRecur() const;
#else // DEBUG_POINTERS
void ISetPointersRecur() const {}
#endif // DEBUG_POINTERS
// Bounds only version
plCullNode::plCullStatus ITestBoundsRecur(const hsBounds3Ext& bnd) const;
plCullNode::plCullStatus ITestSphereRecur(const hsPoint3& center, float rad) const;
// Using the nodes
plCullNode::plCullStatus ITestNode(const plSpaceTree* space, int16_t who, hsLargeArray<int16_t>& clear, hsLargeArray<int16_t>& split, hsLargeArray<int16_t>& culled) const;
void ITestNode(const plSpaceTree* space, int16_t who, hsBitVector& totList, hsBitVector& outList) const;
void IHarvest(const plSpaceTree* space, hsTArray<int16_t>& outList) const;
// Constructing the tree
float IInterpVert(const hsPoint3& p0, const hsPoint3& p1, hsPoint3& out) const;
plCullNode::plCullStatus ISplitPoly(const plCullPoly& poly, plCullPoly*& innerPoly, plCullPoly*& outerPoly) const;
void IMarkClipped(const plCullPoly& poly, const hsBitVector& onVerts) const;
void ITakeHalfPoly(const plCullPoly& scrPoly,
const hsTArray<int>& vtxIdx,
const hsBitVector& onVerts,
plCullPoly& outPoly) const;
void IBreakPoly(const plCullPoly& poly, const hsTArray<float>& depths,
hsBitVector& inVerts,
hsBitVector& outVerts,
hsBitVector& onVerts,
plCullPoly& srcPoly) const;
hsTArray<plCullPoly>& ScratchPolys() const { return fTree->ScratchPolys(); }
hsLargeArray<int16_t>& ScratchClear() const { return fTree->ScratchClear(); }
hsLargeArray<int16_t>& ScratchSplit() const { return fTree->ScratchSplit(); }
hsLargeArray<int16_t>& ScratchCulled() const { return fTree->ScratchCulled(); }
hsBitVector& ScratchBitVec() const { return fTree->ScratchBitVec(); }
hsBitVector& ScratchTotVec() const { return fTree->ScratchTotVec(); }
friend class plCullTree;
public:
void Init(const plCullTree* t, const hsVector3& n, float d) { fIsFace = false; fTree = t; fInnerChild = fOuterChild = -1; SetPlane(n, d); }
void Init(const plCullTree* t, const plCullPoly& poly) { Init(t, poly.fNorm, poly.fDist); }
void SetPlane(const hsVector3& n, float d) { fNorm = n; fDist = d; }
const hsVector3& GetNormal() const { return fNorm; }
const float GetDist() const { return fDist; }
plCullStatus TestBounds(const hsBounds3Ext& bnd) const;
plCullStatus TestSphere(const hsPoint3& center, float rad) const;
};
inline plCullNode* plCullNode::IGetNode(int16_t i) const
{
return fTree->IGetNode(i);
}
#endif // plCullTree_inc