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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 plClusterUtil_inc
#define plClusterUtil_inc
#include "hsGeometry3.h"
#include "hsColorRGBA.h"
#include "plDrawable/plSpanInstance.h"
class plMaxNode;
class plClusterGroup;
class plSpanTemplateB;
class hsBounds3Ext;
class plCluster;
class hsGMaterial;
class plDeformVert
{
public:
// Begin returns true if it's actually planning to do anything.
// If it returns false, End will still get called, but GetDel probably won't.
virtual hsBool Begin(INode* templNode, const hsBounds3Ext& wBnd) { return false; }
virtual void End() {}
hsVector3 GetDel(const hsPoint3& p) { return GetDel(Point3(p.fX, p.fY, p.fZ)); }
virtual hsVector3 GetDel(const Point3& p) { return hsVector3(0,0,0); }
};
class plShadeVert
{
public:
virtual hsBool Begin(INode* templNode, const hsBounds3Ext& wBnd) { return false; }
virtual void End() {}
Color GetShade(const hsPoint3& p, const hsVector3& n) { return GetShade(Point3(p.fX, p.fY, p.fZ), Point3(n.fX, n.fY, n.fZ)); }
virtual Color GetShade(const Point3& p, const Point3& n) { return Color(0,0,0); }
};
class plL2WTab : public Tab<Matrix3> {};
class plL2WTabTab : public Tab<plL2WTab*> {};
class plPoint3Tab : public Tab<hsVector3> {};
class plPoint3TabTab : public Tab<plPoint3Tab*> {};
class plColorTab : public Tab<UInt32> {};
class plColorTabTab : public Tab<plColorTab*> {};
class plSpanTemplTab : public Tab<plSpanTemplateB*> {};
class plClusterUtil
{
protected:
UInt32 fIdx;
plClusterGroup* fGroup;
plMaxNode* fTemplNode;
plSpanTemplateB* fTemplate;
int fMinFaces;
int fMaxFaces;
hsScalar fMinSize;
int fMinInsts;
int fMaxInsts;
plSpanEncoding ISelectEncoding(plPoint3TabTab& delPos, plColorTabTab& colors);
void IAllocPosAndColor(plSpanTemplateB* templ, const plL2WTab& insts,
plPoint3TabTab& delPos, plColorTabTab& colors);
void IDelPosAndColor(plSpanTemplateB* templ,
const plL2WTab& insts, plDeformVert* def, plShadeVert* shade,
plPoint3TabTab& delPos, plColorTabTab& colors);
void IAddInstsToCluster(plCluster* cluster, plSpanTemplateB* templ,
const plL2WTab& insts,
plPoint3TabTab& delPos,
plColorTabTab& colors);
void IFreePosAndColor(plPoint3TabTab& delPos, plColorTabTab& colors) const;
void IFreeClustersRecur(plL2WTabTab& dst) const;
void IFindClustersRecur(plSpanTemplateB* templ, plL2WTab& src, plL2WTabTab& dst);
hsBool ISplitCluster(plSpanTemplateB* templ, plL2WTab& src, plL2WTab& lo, plL2WTab& hi);
int ISelectAxis(const plL2WTab& src) const;
Box3 IBound(const plL2WTab& src) const;
Point3 ILength(const plL2WTab& src) const;
void ISortTemplate(plSpanTemplateB* templ) const;
plSpanTemplateB* IAddTemplate(plMaxNode* templNode, plGeometrySpan* geo);
void ITemplateFromGeo(plSpanTemplateB* templ, plGeometrySpan* geo);
void ISortTemplates(plSpanTemplTab& templs) const;
void IAddTemplates(plMaxNode* templNode, plSpanTemplTab& templs);
void ISetupGroupFromTemplate(plMaxNode* templ);
public:
plClusterUtil();
~plClusterUtil();
plSpanTemplTab MakeTemplates(INode* templNode);
plClusterGroup* CreateGroup(plMaxNode* node, const char* name);
plClusterGroup* SetupGroup(plClusterGroup* group, plMaxNode* node, plSpanTemplateB* templ);
plClusterGroup* GetGroup() const { return fGroup; }
void AddClusters(plL2WTab& insts, plDeformVert* def, plShadeVert* shade);
};
#endif // plClusterUtil_inc