CWE-ou-minkata/Sources/Tools/MaxMain/plMaxNodeBase.cpp

/*==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
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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,
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*==LICENSE==*/
#include "HeadSpin.h"
#include "plMaxNodeBase.h"
#include "plMaxNodeData.h"

// Max includes
#include "iparamm2.h"
#include "modstack.h"
#include "ISkin.h"
#include "dummy.h"

//To support the new Plasma Light Objs, the classes are included below
#include "MaxPlasmaLights/plRealTimeLightBase.h"


#include <vector>
#include <algorithm>

#include "GlobalUtility.h"  // Only needed for PLASMA_MAX_CLASSID, fix?

#include "pnKeyedObject/plUoid.h"
#include "pnKeyedObject/plKey.h"

#include "pnModifier/plModifier.h"

#include "MaxPlasmaMtls/Materials/plDecalMtl.h"

#include "MaxComponent/plComponentBase.h"

CoreExport void *__cdecl MAX_new(size_t size);
CoreExport void __cdecl MAX_delete(void* mem);

void plMaxNodeBase::SetMaxNodeData(plMaxNodeData * pdat)
{
    const char* dbgNodeName = GetName();

    // If object is a component, don't add node data
    if (IsComponent())
        return;

    AppDataChunk *adc = GetAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaMaxNodeDataChunk);

    // If pointer is nil, remove any data
    if (!pdat)
    {
        if( adc )
        {
            plMaxNodeData *pDataChunk = (plMaxNodeData*)adc->data;
            pDataChunk->DeInit();
        }
        RemoveAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaMaxNodeDataChunk);
        return;     
    }

    if (!adc)
    {
        // Does not exist, create a new one...
        int len = sizeof(plMaxNodeData);
        plMaxNodeData *pDataChunk = (plMaxNodeData *)MAX_new(len);
        memcpy(pDataChunk, pdat, sizeof(*pdat));
        pDataChunk->Init();
        *pDataChunk = *pdat;
        AddAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaMaxNodeDataChunk, len, pDataChunk);
    }
    else
    {
        plMaxNodeData *pDataChunk = (plMaxNodeData*)adc->data;
        // if someone does a GetMaxNodeData, they get a pointer to the data,
        // No need to set it, other wise set the Data chunk from the  MaxNodeData passed in
        if (pDataChunk != pdat)
            *pDataChunk = *pdat;
    }
}

plMaxNodeData *plMaxNodeBase::GetMaxNodeData()
{
    AppDataChunk *adc = GetAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaMaxNodeDataChunk);
    if (adc)
        return (plMaxNodeData*)adc->data;

    return nil;
}

#define GetMD   plMaxNodeData *pMD = GetMaxNodeData(); //hsAssert(pMD,"Missing MaxNodeData");   // Get MaxNode Data

plKey           plMaxNodeBase::GetKey()             { GetMD; return (pMD) ? pMD->GetKey() : nil;        }
plSceneObject*  plMaxNodeBase::GetSceneObject()     { GetMD; return (pMD) ? pMD->GetSceneObject() : nil;}
bool            plMaxNodeBase::GetForceLocal()          { GetMD; return (pMD) ? pMD->GetForceLocal() : nil; }
bool            plMaxNodeBase::GetReverseSort()         { GetMD; return (pMD) ? pMD->GetReverseSort() : nil;}
bool            plMaxNodeBase::GetSortAsOpaque()        { GetMD; return (pMD) ? pMD->GetSortAsOpaque() : nil;}
bool            plMaxNodeBase::GetVS()                  { GetMD; return (pMD) ? pMD->GetVS() : nil;}
bool            plMaxNodeBase::GetHasWaterHeight()      { GetMD; return (pMD) ? pMD->GetHasWaterHeight() : nil; }
float           plMaxNodeBase::GetWaterHeight()         { GetMD; return (pMD) ? pMD->GetWaterHeight() : nil; }
bool            plMaxNodeBase::GetSmoothAll()           { GetMD; return (pMD) ? pMD->GetSmoothAll() : nil;}
bool            plMaxNodeBase::GetForceSortable()       { GetMD; return (pMD) ? pMD->GetForceSortable() : nil;}
bool            plMaxNodeBase::GetConcave()             { GetMD; return (pMD) ? pMD->GetConcave() : nil;}
bool            plMaxNodeBase::GetCalcEdgeLens()        { GetMD; return (pMD) ? pMD->GetCalcEdgeLens() : nil;}
bool            plMaxNodeBase::GetRunTimeLight()        { GetMD; return (pMD) ? pMD->GetRunTimeLight() : nil;}
bool            plMaxNodeBase::GetForceMatShade()       { GetMD; return (pMD) ? pMD->GetForceMatShade() : nil;}
bool            plMaxNodeBase::GetForceVisLOS()         { GetMD; return (pMD) ? pMD->GetForceVisLOS() : nil;}
bool            plMaxNodeBase::GetEnviron()     { GetMD; return (pMD) ? pMD->GetEnviron() : nil;}
bool            plMaxNodeBase::GetEnvironOnly()     { GetMD; return (pMD) ? pMD->GetEnvironOnly() : nil;}
bool            plMaxNodeBase::GetWaterDecEnv()         { GetMD; return (pMD) ? pMD->GetWaterDecEnv() : nil; }
bool            plMaxNodeBase::GetNoPreShade()          { GetMD; return (pMD) ? pMD->GetNoPreShade() && !pMD->GetForcePreShade() : nil;}
bool            plMaxNodeBase::GetForcePreShade()       { GetMD; return (pMD) ? pMD->GetForcePreShade() : nil;}
plKey           plMaxNodeBase::GetRoomKey()         { GetMD; return (pMD) ? pMD->GetRoomKey() : nil;    }
bool            plMaxNodeBase::GetDrawable()            { GetMD; return (pMD) ? pMD->GetDrawable() : nil;   }
bool            plMaxNodeBase::GetPhysical()            { GetMD; return (pMD) ? pMD->GetPhysical() : nil;   }
bool            plMaxNodeBase::GetItinerant()           { GetMD; return (pMD) ? pMD->GetItinerant() : nil;  }
bool            plMaxNodeBase::GetUnBounded()           { GetMD; return (pMD) ? pMD->GetUnBounded() : nil;  }
bool            plMaxNodeBase::GetDisableNormal()       { GetMD; return (pMD) ? pMD->GetDisableNormal() : nil;  }
uint32_t        plMaxNodeBase::GetDecalLevel()          { GetMD; return (pMD) ? pMD->GetDecalLevel() : nil; }
bool            plMaxNodeBase::GetMovable()         { GetMD; return (pMD) ? pMD->GetMovable() : nil;    }
bool            plMaxNodeBase::GetIsBarney()            { GetMD; return (pMD) ? pMD->GetIsBarney() : nil;   }
bool            plMaxNodeBase::GetForceShadow()         { GetMD; return (pMD) ? pMD->GetForceShadow() : nil;    }
bool            plMaxNodeBase::GetAlphaTestHigh()       { GetMD; return (pMD) ? pMD->GetAlphaTestHigh() : nil;  }
bool            plMaxNodeBase::GetFilterInherit()           { GetMD; return (pMD) ? pMD->GetFilterInherit() : nil;  }
bool            plMaxNodeBase::GetNoShadow()            { GetMD; return (pMD) ? pMD->GetNoShadow() : nil;   }
bool            plMaxNodeBase::GetNoSpanSort()          { GetMD; return (pMD) ? pMD->GetNoSpanSort() : nil; }
bool            plMaxNodeBase::GetNoSpanReSort()        { GetMD; return (pMD) ? pMD->GetNoSpanReSort() : nil; }
bool            plMaxNodeBase::GetNoFaceSort()          { GetMD; return (pMD) ? pMD->GetNoFaceSort() : nil; }
bool            plMaxNodeBase::GetNoDeferDraw()     { GetMD; return (pMD) ? pMD->GetNoDeferDraw() : nil; }
bool            plMaxNodeBase::GetBlendToFB()       { GetMD; return (pMD) ? pMD->GetBlendToFB() : nil; }
bool            plMaxNodeBase::GetForceMaterialCopy()   { GetMD; return (pMD) ? pMD->GetForceMaterialCopy() : nil; }
bool            plMaxNodeBase::GetInstanced()           { GetMD; return (pMD) ? pMD->GetInstanced() : nil; }
bool            plMaxNodeBase::GetParticleRelated() { GetMD; return (pMD) ? pMD->GetParticleRelated() : nil; }
uint32_t        plMaxNodeBase::GetSoundIdxCounter() { GetMD; return (pMD) ? pMD->GetSoundIdxCounter() : 0; }
plSceneObject*  plMaxNodeBase::GetAvatarSO()            { GetMD; return (pMD) ? pMD->GetAvatarSO() : nil; }
BOOL            plMaxNodeBase::HasFade()                { GetMD; return (pMD) ? pMD->HasFade() : false; }
Box3            plMaxNodeBase::GetFade()                { GetMD; return (pMD) ? pMD->GetFade() : Box3(Point3(0,0,0), Point3(0,0,0)); }
bool            plMaxNodeBase::GetDup2Sided()           { GetMD; return (pMD) ? pMD->GetDup2Sided() : false;}
bool            plMaxNodeBase::GetRadiateNorms()        { GetMD; return (pMD) ? pMD->GetRadiateNorms() : false;}
BOOL            plMaxNodeBase::HasNormalChan()          { GetMD; return (pMD) ? pMD->HasNormalChan() : false; }
int             plMaxNodeBase::GetNormalChan()          { GetMD; return (pMD) ? pMD->GetNormalChan() : 0; }
bool            plMaxNodeBase::GetIsGUI()               { GetMD; return (pMD) ? pMD->GetIsGUI() : false; }
plSharedMesh*   plMaxNodeBase::GetSwappableGeom()       { GetMD; return (pMD) ? pMD->GetSwappableGeom() : nil; }
uint32_t        plMaxNodeBase::GetSwappableGeomTarget()     { GetMD; return (pMD) ? pMD->GetSwappableGeomTarget() : -1; }
plMaxBoneMap*   plMaxNodeBase::GetBoneMap()                 { GetMD; return (pMD) ? pMD->GetBoneMap() : nil; }
bool            plMaxNodeBase::GetOverrideHighLevelSDL()    { GetMD; return (pMD) ? pMD->GetOverrideHighLevelSDL() : false; }
uint8_t         plMaxNodeBase::GetAnimCompress()                    { GetMD; return (pMD) ? pMD->GetAnimCompress() : false; }
float           plMaxNodeBase::GetKeyReduceThreshold()              { GetMD; return (pMD) ? pMD->GetKeyReduceThreshold() : 0; }
int             plMaxNodeBase::NumRenderDependencies()              { GetMD; return (pMD) ? pMD->NumRenderDependencies() : 0; }
plMaxNodeBase*  plMaxNodeBase::GetRenderDependency(int i)           { GetMD; return (pMD) ? pMD->GetRenderDependency(i) : nil; }

int             plMaxNodeBase::NumBones()                           { GetMD; return (pMD) ? pMD->NumBones() : 0;    }
plMaxNodeBase*  plMaxNodeBase::GetBone(int i)                       { GetMD; return (pMD) ? pMD->GetBone(i) : nil;  }


//------------------------------
// Set Data from MaxNodeData
//------------------------------
void            plMaxNodeBase::SetCanConvert(bool b)              { GetMD; pMD->SetCanConvert(b);         }
void            plMaxNodeBase::SetMesh(hsGMesh *p)                  { GetMD; pMD->SetMesh(p);               }       
void            plMaxNodeBase::SetRoomKey(plKey p)                  { GetMD; pMD->SetRoomKey(p);            }
void            plMaxNodeBase::SetDrawable(bool b)                { GetMD; pMD->SetDrawable(b);           }
void            plMaxNodeBase::SetPhysical(bool b)                { GetMD; pMD->SetPhysical(b);           }
//void          plMaxNodeBase::SetItinerant(bool b);
void            plMaxNodeBase::SetUnBounded(bool b)               { GetMD; pMD->SetUnBounded(b);      }
void            plMaxNodeBase::SetDisableNormal(bool b)           { GetMD; pMD->SetDisableNormal(b);      }
void            plMaxNodeBase::SetDecalLevel(uint32_t i)              { GetMD; pMD->SetDecalLevel(i);         }
void            plMaxNodeBase::SetMovable(bool b)                 { GetMD; pMD->SetMovable(b); pMD->SetRunTimeLight(b); pMD->SetNoPreShade(b);            }
void            plMaxNodeBase::SetReverseSort(bool b)             { GetMD; pMD->SetReverseSort(b); }
void            plMaxNodeBase::SetSortAsOpaque(bool b)            { GetMD; pMD->SetSortAsOpaque(b); }
void            plMaxNodeBase::SetVS(bool b)                      { GetMD; pMD->SetVS(b); }
void            plMaxNodeBase::SetHasWaterHeight(bool b)          { GetMD; pMD->SetHasWaterHeight(b); }
void            plMaxNodeBase::SetWaterHeight(float h)           { GetMD; pMD->SetWaterHeight(h); }
void            plMaxNodeBase::SetSmoothAll(bool b)               { GetMD; pMD->SetSmoothAll(b); }
void            plMaxNodeBase::SetForceSortable(bool b)           { GetMD; pMD->SetForceSortable(b); }
void            plMaxNodeBase::SetConcave(bool b)                 { GetMD; pMD->SetConcave(b); }
void            plMaxNodeBase::SetCalcEdgeLens(bool b)            { GetMD; pMD->SetCalcEdgeLens(b); }
void            plMaxNodeBase::SetRunTimeLight(bool b)            { GetMD; pMD->SetRunTimeLight(b); }
void            plMaxNodeBase::SetForceMatShade(bool b)           { GetMD; pMD->SetForceMatShade(b); }
void            plMaxNodeBase::SetForceVisLOS(bool b)             { GetMD; pMD->SetForceVisLOS(b); }
void            plMaxNodeBase::SetEnviron(bool b)                 { GetMD; pMD->SetEnviron(b); }
void            plMaxNodeBase::SetEnvironOnly(bool b)             { GetMD; pMD->SetEnvironOnly(b); }
void            plMaxNodeBase::SetWaterDecEnv(bool b)             { GetMD; pMD->SetWaterDecEnv(b); }
void            plMaxNodeBase::SetNoPreShade(bool b)              { GetMD; pMD->SetNoPreShade(b);         }
void            plMaxNodeBase::SetForcePreShade(bool b)           { GetMD; pMD->SetForcePreShade(b);      }
void            plMaxNodeBase::SetForceLocal(bool b)              { GetMD; pMD->SetForceLocal(b);         }
void            plMaxNodeBase::SetIsBarney(bool b)                { GetMD; pMD->SetIsBarney(b);           }
void            plMaxNodeBase::SetForceShadow(bool b)             { GetMD; pMD->SetForceShadow(b);        }
void            plMaxNodeBase::SetAlphaTestHigh(bool b)           { GetMD; pMD->SetAlphaTestHigh(b);      }
void            plMaxNodeBase::SetFilterInherit(bool b)           { GetMD; pMD->SetFilterInherit(b);      }
void            plMaxNodeBase::SetNoShadow(bool b)                { GetMD; pMD->SetNoShadow(b);           }
void            plMaxNodeBase::SetNoSpanSort(bool b)              { GetMD; pMD->SetNoSpanSort(b);         }
void            plMaxNodeBase::SetNoSpanReSort(bool b)            { GetMD; pMD->SetNoSpanReSort(b);       }
void            plMaxNodeBase::SetNoFaceSort(bool b)              { GetMD; pMD->SetNoFaceSort(b);         }
void            plMaxNodeBase::SetNoDeferDraw(bool b)             { GetMD; pMD->SetNoDeferDraw(b);        }
void            plMaxNodeBase::SetBlendToFB(bool b)               { GetMD; pMD->SetBlendToFB(b);      }
void            plMaxNodeBase::SetForceMaterialCopy(bool b)       { GetMD; pMD->SetForceMaterialCopy(b);  }
void            plMaxNodeBase::SetInstanced(bool b)               { GetMD; pMD->SetInstanced(b);          }
void            plMaxNodeBase::SetParticleRelated(bool b)         { GetMD; pMD->SetParticleRelated(b);    }
void            plMaxNodeBase::SetSoundIdxCounter(uint32_t ctr)       { GetMD; pMD->SetSoundIdxCounter(ctr);  }
void            plMaxNodeBase::SetAvatarSO(plSceneObject *so)       { GetMD; pMD->SetAvatarSO(so);          }
void            plMaxNodeBase::SetFade(const Box3& b)               { GetMD; pMD->SetFade(b);               }
void            plMaxNodeBase::SetDup2Sided(bool b)               { GetMD; pMD->SetDup2Sided(b);          }
void            plMaxNodeBase::SetRadiateNorms(bool b)            { GetMD; pMD->SetRadiateNorms(b);       }
void            plMaxNodeBase::SetNormalChan(int n)                 { GetMD; pMD->SetNormalChan(n);         }
void            plMaxNodeBase::SetIsGUI(bool b)                   { GetMD; pMD->SetIsGUI(b);          }
void            plMaxNodeBase::SetSwappableGeom(plSharedMesh *sm)   { GetMD; pMD->SetSwappableGeom(sm); }
void            plMaxNodeBase::SetSwappableGeomTarget(uint32_t id)    { GetMD; pMD->SetSwappableGeomTarget(id);   }
void            plMaxNodeBase::SetBoneMap(plMaxBoneMap *bones)      { GetMD; pMD->SetBoneMap(bones);    }
void            plMaxNodeBase::SetOverrideHighLevelSDL(bool b)    { GetMD; pMD->SetOverrideHighLevelSDL(b); }
void            plMaxNodeBase::SetAnimCompress(uint8_t v)             { GetMD; pMD->SetAnimCompress(v); }
void            plMaxNodeBase::SetKeyReduceThreshold(float v)    { GetMD; pMD->SetKeyReduceThreshold(v); }
void            plMaxNodeBase::ClearRenderDependencies()            { GetMD; pMD->ClearRenderDependencies(); }

void            plMaxNodeBase::AddBone(plMaxNodeBase* m)            { GetMD; if(pMD) pMD->AddBone(m);       }
void            plMaxNodeBase::ClearBones()                         { GetMD; if(pMD) pMD->ClearBones();     }

plLocation plMaxNodeBase::GetLocation()
{
    plKey rmKey= GetRoomKey();
    plLocation loc;
    loc.Invalidate();
    if (rmKey)
        loc = rmKey->GetUoid().GetLocation();
    return loc;
}

bool plMaxNodeBase::GetDirty(uint8_t i)
{
    uint8_t *dirty = IGetSceneViewerChunk();
    return *dirty & i;
}

void plMaxNodeBase::SetDirty(uint8_t i, bool b)
{
    uint8_t *dirty = IGetSceneViewerChunk();

    if (b)
        *dirty |= i;
    else
        *dirty &= ~i;
}

bool plMaxNodeBase::HasLoadMask()
{
    GetMD;
    return pMD->HasLoadMask();
}

plLoadMask plMaxNodeBase::GetLoadMask()
{
    GetMD;
    return pMD->GetLoadMask();
}

void plMaxNodeBase::AddLoadMask(const plLoadMask& m)
{
    GetMD;
    pMD->AddLoadMask(m);
}

bool plMaxNodeBase::RenderDependsOn(plMaxNodeBase* m)
{
    if( m == this )
        return true;

    int i;
    for( i = 0; i < NumRenderDependencies(); i++ )
    {
        if( GetRenderDependency(i)->RenderDependsOn(m) )
            return true;
    }
    return false;
}

bool plMaxNodeBase::AddRenderDependency(plMaxNodeBase* m) 
{ 
    if( m->RenderDependsOn(this) )
        return false;
    GetMD; 
    pMD->AddRenderDependency(m); 
    return true;
}

uint8_t *plMaxNodeBase::IGetSceneViewerChunk()
{
    uint8_t *SVChunk = nil;

    AppDataChunk *adc = GetAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaSceneViewerChunk);
    if (adc)
        SVChunk = (uint8_t*)adc->data;
    else
    {
        // Does not exist, create a new one...
        SVChunk = (uint8_t*)MAX_new(1);
        *SVChunk = 0;
        AddAppDataChunk(PLASMA_MAX_CLASSID, GUP_CLASS_ID, kPlasmaSceneViewerChunk, 1, SVChunk);
    }

    hsAssert(SVChunk, "SceneViewer chunk not found or created");
    return SVChunk;
}

bool plMaxNodeBase::CanConvert(bool recalculate)
{
    // Try and find a cached return value
    plMaxNodeData *md = GetMaxNodeData();
    if (md && !recalculate)
        return md->CanConvert();

    if (UserPropExists("IGNORE"))
        return false;

    Object *obj = EvalWorldState(0/*hsConverterUtils::Instance().GetTime(GetInterface())*/).obj;
    if (obj)
    {
        if  (  obj->CanConvertToType(triObjectClassID)      // MeshObjs are accepted here
            || obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0) // Dummy boxes are accepted here
            || obj->SuperClassID() == CAMERA_CLASS_ID       // All Camera types are accepted here
            || obj->ClassID() == Class_ID(UTILITY_CLASS_ID, 0)      // All Camera targets are accepted here
            || (  obj->ClassID() ==  RTOMNI_LIGHT_CLASSID
                || obj->ClassID() == RTSPOT_LIGHT_CLASSID
                || obj->ClassID() == RTDIR_LIGHT_CLASSID 
                || obj->ClassID() == RTPDIR_LIGHT_CLASSID )
            || (  obj->SuperClassID() == LIGHT_CLASS_ID     // All run time lights are accepted here
               && UserPropExists("RunTimeLight"))

            || IsGroupMember()                              // Group objects are accepted here
            )
        return true;
    }
    return false;
}

bool plMaxNodeBase::IsTMAnimated()
{
    Control* tmControl = GetTMController();
    return (tmControl && tmControl->IsAnimated());
}

//// IsTMAnimatedRecur  - test recursively up the chain ///////////////////////////////////////////////////////////////
bool plMaxNodeBase::IsTMAnimatedRecur()
{
    const char* dbgNodeName = GetName();
    bool        shouldBe = false;

    if( !CanConvert() )
        return false;
    if( IsTMAnimated() )
        return true;

    return ((plMaxNodeBase*)GetParentNode())->IsTMAnimatedRecur();
}

//// IsMovable ///////////////////////////////////////////////////////////////
//  Returns whether this node is "animated" (i.e. could move at runtime)
bool plMaxNodeBase::IsMovable()
{
    const char* dbgNodeName = GetName();
    bool        shouldBe = false;


    if( !CanConvert() )
        return false;

    if( GetMovable() )
        return true;

    if( GetItinerant() )
        shouldBe = true;
    else if( FindSkinModifier() )
        shouldBe = true;

    // Moved this to plAnimComponent (so GetMovable() will reveal it)
    /*
    else if( IsTMAnimated() )
        shouldBe = true;
    */
    if( shouldBe )
    {
        SetMovable( true );
        return true;
    }

    return ((plMaxNodeBase*)GetParentNode())->IsMovable();
}

// Recursively set so we don't have to recursively check.
void plMaxNodeBase::SetItinerant(bool b)
{ 
    const char* dbgNodeName = GetName();

    if( !CanConvert() )
        return;

    GetMD; 
    pMD->SetItinerant(b);           

    int i;
    for( i = 0; i < NumChildren(); i++ )
    {
        ((plMaxNodeBase*)GetChildNode(i))->SetItinerant(b);
    }
}

//// FindSkinModifier ///////////////////////////////////////////////////////
//  Given an INode, gets the ISkin object of that node, or nil if there is
//  none. Taken from the Max4 SDK, ISkin.h
ISkin* plMaxNodeBase::FindSkinModifier()
{
    int modStackIndex;

    // Get object from node. Abort if no object.
    Object *pObj = GetObjectRef();
    if( pObj == nil )
        return nil;

    // Is derived object ?
    while( pObj->SuperClassID() == GEN_DERIVOB_CLASS_ID )
    {
        IDerivedObject *pDerObj = (IDerivedObject *)pObj;

        // Iterate over all entries of the modifier stack.
        for( modStackIndex = 0; modStackIndex < pDerObj->NumModifiers(); modStackIndex++ )
        {
            // Get current modifier.
            Modifier *mod = pDerObj->GetModifier( modStackIndex );

            // Is this Skin ?
            if( mod->ClassID() == SKIN_CLASSID )
            {
                ISkin* skin = (ISkin*)mod->GetInterface(I_SKIN);
                if( skin->GetNumBones() > 0 )
                    return skin;
            }
        }
        pObj = pDerObj->GetObjRef();
    }

    // Not found.
    return nil;
}

bool plMaxNodeBase::IsXRef()
{
    // Is this an XRef'd object?
    Object *obj = GetObjectRef();
    if (obj->SuperClassID() == SYSTEM_CLASS_ID && obj->ClassID() == XREFOBJ_CLASS_ID)
        return true;

    //
    // Is this part of an XRef'd scene?
    //
    // Walk up to our root node
    INode *root = GetParentNode();
    while (!root->IsRootNode())
        root = root->GetParentNode();
    // If our root isn't the main root, we're in an XRef'd scene.
    if (root != GetCOREInterface()->GetRootNode())
        return true;

    return false;
}

bool plMaxNodeBase::IsComponent(Object *obj)
{
    if (!obj)
        obj = GetObjectRef();

    if (obj && obj->CanConvertToType(COMPONENT_CLASSID))
        return true;

    return false;
}

bool plMaxNodeBase::IsExternComponent(Object *obj)
{
    if (!obj)
        obj = GetObjectRef();

    if (obj && obj->CanConvertToType(EXT_COMPONENT_CLASSID))
        return true;

    return false;
}

plComponentBase *plMaxNodeBase::ConvertToComponent()
{
    if (IsComponent())
        return (plComponentBase*)GetObjectRef();

    return nil;
}

// There isn't an easy way to determine if there are any components attached to a node.
// This method goes through the reflist of a node and backtracks up each ref (using
// IRefMakerToComponent) to determine if it is a component.  There are cases though
// where a component can show up as two or more refs to a node, when it has a legitimate
// target ref and some other ref like a proxy object.  To catch this case we maintain a
// list of the components found so far and ensure there aren't any duplicates.  Maybe it
// would be easier to just go through every component in the scene and check their target
// lists... -Colin
uint32_t plMaxNodeBase::NumAttachedComponents(bool all)
{
    uint32_t numComponents = 0;
    std::vector<plComponentBase*> comps;

    // Go through this item's reflist, looking for components
    DependentIterator di(this);
    ReferenceMaker* item = di.Next();
    while (item)
    {
        plComponentBase *comp = IRefMakerToComponent(item, all);
        if (comp && std::find(comps.begin(), comps.end(), comp) == comps.end())
        {
            comps.push_back(comp);
            numComponents++;
        }

        item = di.Next();
    }

    return numComponents;
}

plComponentBase *plMaxNodeBase::GetAttachedComponent(uint32_t i, bool all)
{
    uint32_t numComponents = 0;
    std::vector<plComponentBase*> comps;

    // Go through this item's reflist, looking for components
    DependentIterator di(this);
    ReferenceMaker* item = di.Next();
    while (item)
    {
        plComponentBase *comp = IRefMakerToComponent(item, all);
        if (comp && std::find(comps.begin(), comps.end(), comp) == comps.end())
        {
            if (numComponents == i)
                return comp;

            comps.push_back(comp);
            numComponents++;
        }

        item = di.Next();;
    }

    return nil;
}

plComponentBase *plMaxNodeBase::IRefMakerToComponent(ReferenceMaker *maker, bool all)
{
    if (!maker)
        return nil;

    // Is the refmaker a paramblock?  If so, it may be the
    // targets block of a component
    if (maker->SuperClassID() == PARAMETER_BLOCK2_CLASS_ID)
    {
        IParamBlock2 *pb = (IParamBlock2*)maker;
        ReferenceMaker *pbowner = pb->GetOwner();

        // Is the owner of the paramblock a helper object (component superclass)?
        if (pbowner && pbowner->SuperClassID() == HELPER_CLASS_ID)
        {
            Object *obj = (Object*)pbowner;
            // Is the owner of the paramblock a component?
            if (IsComponent(obj))
            {
                plComponentBase *comp = (plComponentBase*)obj;

                if (!all)
                {
                    // Does this component actually ref us? (A component can have other
                    // refs to a node, like a proxy object, so we want to make sure this
                    // node is actually in the target list.)
                    for (uint32_t i = 0; i < comp->NumTargets(); i++)
                    {
                        if (comp->GetTarget(i) == this)
                            return comp;
                    }
                }
                else
                    return comp;
            }
        }
    }

    return nil;
}

bool plMaxNodeBase::IRenderLevelSet(bool forBlend)
{
    plMaxNodeData* md = GetMaxNodeData();
    if( md )
        return forBlend ? md->BlendLevelSet() : md->OpaqueLevelSet();
    return false;
}

void plMaxNodeBase::ISetRenderLevel(const plRenderLevel& l, bool forBlend)
{
    plMaxNodeData* md = GetMaxNodeData();
    if( md )
    {
        if( forBlend )
            md->SetBlendLevel(l);
        else
            md->SetOpaqueLevel(l);
    }
}

const plRenderLevel& plMaxNodeBase::IGetRenderLevel(bool forBlend)
{
    plMaxNodeData* md = GetMaxNodeData();
    if( !md )
    {
        static plRenderLevel defRenderLevel;
        return defRenderLevel;
    }
    return forBlend ? md->GetBlendLevel() : md->GetOpaqueLevel();
}

uint32_t plMaxNodeBase::IGetMajorRenderLevel(bool forBlend)
{
    if( GetBlendToFB() )
        return plRenderLevel::kFBMajorLevel;

    if( GetNoDeferDraw() || GetAvatarSO() )
        forBlend = false;

    int numDep = NumRenderDependencies();
    if( !numDep )
        return forBlend ? plRenderLevel::kBlendRendMajorLevel : plRenderLevel::kDefRendMajorLevel;

    int iMaxDep = 0;
    const char* dbgNodeName = GetName();

    int i;
    for( i = 0; i < numDep; i++ )
    {
        plMaxNodeBase* dep = GetRenderDependency(i);
        if( dep )
        {
            const char* depNodeName = dep->GetName();
            int iDep = GetRenderDependency(i)->GetRenderLevel(forBlend).Major();
            if( iDep > iMaxDep )
                iMaxDep = iDep;
        }
    }

    return iMaxDep;
}

uint32_t plMaxNodeBase::IGetMinorRenderLevel(bool forBlend)
{
    if( GetAvatarSO() )
        return plRenderLevel::kAvatarRendMinorLevel;

    int numDep = NumRenderDependencies();
    if( !numDep )
        return plRenderLevel::kDefRendMinorLevel;

    int iMaxDep = 0;

    const char* dbgNodeName = GetName();

    int i;
    for( i = 0; i < numDep; i++ )
    {
        plMaxNodeBase* dep = GetRenderDependency(i);
        if( dep )
        {
            const char* depNodeName = dep->GetName();
            int iDep = GetRenderDependency(i)->GetRenderLevel(forBlend).Minor();
            if( iDep > iMaxDep )
                iMaxDep = iDep;
        }
    }

    return iMaxDep + 4;
}

plRenderLevel plMaxNodeBase::ICalcRenderLevel(bool forBlend)
{
    if( GetBlendToFB() )
        return plRenderLevel::kFBMajorLevel;

    if( GetAvatarSO() )
        return plRenderLevel(plRenderLevel::kOpaqueMajorLevel, plRenderLevel::kAvatarRendMinorLevel);

    if( GetNoDeferDraw() )
        forBlend = false;

    int numDep = NumRenderDependencies();
    if( !numDep )
        return forBlend 
            ? plRenderLevel(plRenderLevel::kBlendRendMajorLevel, plRenderLevel::kDefRendMinorLevel)
            : plRenderLevel(plRenderLevel::kDefRendMajorLevel, plRenderLevel::kDefRendMinorLevel);

    plRenderLevel maxLevel(plRenderLevel::kFBMajorLevel, plRenderLevel::kDefRendMinorLevel);

    const char* dbgNodeName = GetName();

    int i;
    for( i = 0; i < numDep; i++ )
    {
        plMaxNodeBase* dep = GetRenderDependency(i);
        if( dep )
        {
            const char* depNodeName = dep->GetName();

            plRenderLevel depLev = GetRenderDependency(i)->GetRenderLevel(forBlend);
            if( depLev > maxLevel )
                maxLevel = depLev;
        }
    }
    maxLevel.Set(maxLevel.Level() + 4);

    return maxLevel;
}

const plRenderLevel& plMaxNodeBase::GetRenderLevel(bool forBlend)
{
    if( !CanConvert() )
    {
        static plRenderLevel retVal;
        return retVal;
    }

    if( !IRenderLevelSet(forBlend) )
    {
#if 0

        uint32_t major = IGetMajorRenderLevel(forBlend);
        uint32_t minor = IGetMinorRenderLevel(forBlend);

        ISetRenderLevel(plRenderLevel(major, minor), forBlend);
#else
        ISetRenderLevel(ICalcRenderLevel(forBlend), forBlend);
#endif
    }

    return IGetRenderLevel(forBlend);
}

BOOL plMaxNodeBase::GetGeoDice(int& maxFaces, float& maxSize, int& minFaces)
{
    plMaxNodeData* md = GetMaxNodeData();
    if( md && md->GetGeoDice() )
    {
        maxFaces = md->GetGeoDiceMaxFaces();
        maxSize = md->GetGeoDiceMaxSize();
        minFaces = md->GetGeoDiceMinFaces();
        return true;
    }
    maxFaces = 0;
    maxSize = 0;
    minFaces = 0;
    return false;
}

void plMaxNodeBase::SetGeoDice(BOOL on, int maxFaces, float maxSize, int minFaces)
{
    plMaxNodeData* md = GetMaxNodeData();
    if( md )
    {
        md->SetGeoDice(on);
        md->SetGeoDiceMaxFaces(maxFaces);
        md->SetGeoDiceMaxSize(maxSize);
        md->SetGeoDiceMinFaces(minFaces);
    }
}

bool plMaxNodeBase::Contains(const Point3& worldPt)
{
    TimeValue currTime = 0;//hsConverterUtils::Instance().GetTime(GetInterface());
    Object *obj = EvalWorldState(currTime).obj;
    if( !obj )
        return false;

    Matrix3 l2w = GetObjectTM(currTime);
    Matrix3 w2l = Inverse(l2w);
    Point3 pt = w2l * worldPt;

    if( obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0) )
    {
        DummyObject* dummy = (DummyObject*)obj;
        Box3 bnd = dummy->GetBox();
        return bnd.Contains(pt);
    }
    if( obj->CanConvertToType(triObjectClassID) )
    {
        TriObject   *meshObj = (TriObject *)obj->ConvertToType(currTime, triObjectClassID);
        if( !meshObj )
            return false;

        Mesh& mesh = meshObj->mesh;
        Box3 bnd = mesh.getBoundingBox();
        if( !bnd.Contains(pt) )
        {
            if( meshObj != obj )
                meshObj->DeleteThis();
            return false;
        }

        bool retVal = true;
        int i;
        for( i = 0; i < mesh.getNumFaces(); i++ )
        {
            Face& face = mesh.faces[i];

            Point3 p0 = mesh.verts[face.v[0]];
            Point3 p1 = mesh.verts[face.v[1]];
            Point3 p2 = mesh.verts[face.v[2]];

            Point3 n = CrossProd(p1 - p0, p2 - p0);

            if( DotProd(pt, n) > DotProd(p0, n) )
            {
                retVal = false;
                break;
            }
        }

        if( meshObj != obj )
            meshObj->DeleteThis();

        return retVal;
    }

    // If we can't figure out what it is, the point isn't inside it.
    return false;
}

bool plMaxNodeBase::Contains(const Box3& bnd, const Matrix3& l2w)
{
    int i;
    for( i = 0; i < 8; i++ )
    {
        if( !Contains(l2w * bnd[i]) )
            return false;
    }
    return true;
}

float plMaxNodeBase::BoxVolume(const Box3& bnd, const Matrix3& l2w)
{
    Point3 corner = l2w * bnd[0]; // min, min, min
    float len[3];

    len[0] = Length((l2w * bnd[1]) - corner); // max, min, min
    len[1] = Length((l2w * bnd[2]) - corner); // min, max, min
    len[2] = Length((l2w * bnd[4]) - corner); // min, min, max

    return len[0] * len[1] * len[2];
}

float plMaxNodeBase::RegionPriority()
{
    TimeValue currTime = 0;//hsConverterUtils::Instance().GetTime(GetInterface());
    Object *obj = EvalWorldState(currTime).obj;
    if( !obj )
        return 0;

    Matrix3 l2w = GetObjectTM(currTime);

    if( obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0) )
    {
        DummyObject* dummy = (DummyObject*)obj;
        Box3 bnd = dummy->GetBox();

        return BoxVolume(bnd, l2w);
    }

    if( obj->CanConvertToType(triObjectClassID) )
    {
        TriObject   *meshObj = (TriObject *)obj->ConvertToType(currTime, triObjectClassID);
        if( !meshObj )
            return 0;

        Mesh& mesh = meshObj->mesh;
        Box3 bnd = mesh.getBoundingBox();
        
        if( meshObj != obj )
            meshObj->DeleteThis();

        return BoxVolume(bnd, l2w);
    }

    // Don't know how to interpret other, it's not contained.
    return 0;
}

hsMatrix44 plMaxNodeBase::GetLocalToParent44(TimeValue t)
{
    Matrix3 m3 = GetLocalToParent(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetParentToLocal44(TimeValue t)
{
    Matrix3 m3 = GetParentToLocal(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetLocalToWorld44(TimeValue t)
{
    Matrix3 m3 = GetLocalToWorld(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetWorldToLocal44(TimeValue t)
{
    Matrix3 m3 = GetWorldToLocal(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetOTM44(TimeValue t)
{
    Matrix3 m3 = GetOTM(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetVertToLocal44(TimeValue t)
{
    Matrix3 m3 = GetVertToLocal(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetLocalToVert44(TimeValue t)
{
    Matrix3 m3 = GetLocalToVert(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetLocalToOBB44(TimeValue t)
{
    Matrix3 m3 = GetLocalToOBB(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

hsMatrix44 plMaxNodeBase::GetOBBToLocal44(TimeValue t)
{
    Matrix3 m3 = GetOBBToLocal(t);
    hsMatrix44 m44 = Matrix3ToMatrix44(m3);
    return m44;
}

Matrix3 plMaxNodeBase::GetParentToWorld(TimeValue t)
{
    return Inverse(GetWorldToParent(t));
}

Matrix3 plMaxNodeBase::GetWorldToParent(TimeValue t)
{
    // This may look back-ass-ward, but that's only because it
    // is. If we've got inheritance filtering on, then our localtoworld
    // is no longer parentl2w * l2p, because we'll be ignoring
    // some of our parent's transform. More precisely, we'll be
    // clobbering parts of the product of our parent's current transform
    // and our current local to parent. So we're going to calculate
    // a parent to world transform here that would get us to the
    // right point and orientation in space, even though it has
    // little or nothing to do with our parent's real transform.
    // Note that we only go through this charade if we've got
    // filtering of inheritance active for this node.
    plMaxNodeBase* parent = (plMaxNodeBase*)GetParentNode();
    if( !GetFilterInherit() )
        return parent->GetWorldToLocal(t);

    // l2w = l2p * parentL2W
    // l2w * parentW2L = l2p
    // parentW2L = w2l * l2p
    Point3 pos;
    float rot[4];
    ScaleValue scl;
    Interval posInv;
    Interval rotInv;
    Interval sclInv;

    Matrix3Indirect parentMatrix(parent->GetNodeTM(t));

    TMComponentsArg cmpts(&pos, &posInv, rot, &rotInv, &scl, &sclInv);
    GetTMController()->GetLocalTMComponents(t, cmpts, parentMatrix);

    Quat q;
    if( cmpts.rotRep == TMComponentsArg::RotationRep::kQuat )
        q = Quat(rot);
    else
        EulerToQuat(rot, q, cmpts.rotRep);

    Matrix3 l2p(true);
    l2p.PreTranslate(pos);
    PreRotateMatrix(l2p, q);
    l2p.PreScale(scl.s);
    PreRotateMatrix(l2p, scl.q);

    Matrix3 w2l = GetWorldToLocal(t);

    return w2l * l2p;
}

Matrix3 plMaxNodeBase::GetLocalToParent(TimeValue t)
{
    // l2w = l2p * parentL2W
    // l2w * Inverse(parentL2W) = l2p
    // l2w * parentW2L = l2p
    Matrix3 l2w = GetLocalToWorld(t);
    Matrix3 w2p(true);
    if( !GetParentNode()->IsRootNode() )
        w2p = GetWorldToParent(t);

    Matrix3 l2p = l2w * w2p;
    return l2p;
}

Matrix3 plMaxNodeBase::GetParentToLocal(TimeValue t)
{
    Matrix3 loc2Par = GetLocalToParent(t);
    Matrix3 par2Loc = Inverse(loc2Par);
    return par2Loc;
}

Matrix3 plMaxNodeBase::GetLocalToWorld(TimeValue t)
{
    if( GetForceLocal() )
    {
        // v2l * l2w = objectTM
        // l2w = Inverse(v2l) * objectTM;
        // l2w = l2v * objectTM
        Matrix3 objectTM = GetObjectTM(t);
        Matrix3 l2w = GetLocalToVert(t) * objectTM ;
        return l2w;
    }
    if( !GetParentNode()->IsRootNode() )
        return GetParentToWorld(t);

    return Matrix3(true);
}

Matrix3 plMaxNodeBase::GetWorldToLocal(TimeValue t)
{
    Matrix3 l2w = GetLocalToWorld(t);
    Matrix3 w2l = Inverse(l2w);
    return w2l;
}

Matrix3 plMaxNodeBase::GetOTM(TimeValue t)
{
    // objectTM = otm * nodeTM
    // otm = objectTM * Inverse(nodeTM)
    Matrix3 objectTM = GetObjectTM(t);
    Matrix3 nodeTM = GetNodeTM(t);
    Matrix3 otm = objectTM * Inverse(nodeTM);
    otm.ValidateFlags();
    return otm;
}

Matrix3 plMaxNodeBase::GetVertToLocal(TimeValue t)
{
    Matrix3     objectTM;

    //
    // If animated or we want forced into local space
    // still return OTM to fold into vertices
    //
    if( GetForceLocal() )
    {
        return GetOTM(t);
    }

    // otherwise flatten our local to parent into the verts
    // note that our parent may have flattened their l2p into
    // their v2l as well.
    // so
    // objectTM = v2l * l2p * parentL2W
    // objectTM * Inverse(parentL2W) = v2l * l2p
    // objectTM * parentW2L = v2l (w/ l2p folded in)
    // 
    // Objects transformation ObjectTM = OTM * nodeTM 
    objectTM = GetObjectTM(t);

    Matrix3 w2p(true);
    if( !GetParentNode()->IsRootNode() )
        w2p = GetWorldToParent(t);

    Matrix3 v2l = objectTM * w2p;

    return v2l;
}

Matrix3 plMaxNodeBase::GetLocalToVert(TimeValue t)
{
    Matrix3 v2l = GetVertToLocal(t);
    Matrix3 l2v = Inverse(v2l);
    return l2v;
}

Matrix3 plMaxNodeBase::GetLocalToOBB(TimeValue t)
{
    return GetLocalToVert(t) * GetOTM(t);
}

Matrix3 plMaxNodeBase::GetOBBToLocal(TimeValue t)
{
    return Inverse(GetOTM(t)) * GetVertToLocal(t);
}

hsMatrix44 plMaxNodeBase::Matrix3ToMatrix44(const Matrix3& m3)
{
    const MRow* m = m3.GetAddr();

    hsMatrix44 m44;
    m44.Reset();
    m44.fMap[0][0] = m[0][0];
    m44.fMap[0][1] = m[1][0];
    m44.fMap[0][2] = m[2][0];
    m44.fMap[0][3] = m[3][0];
    
    m44.fMap[1][0] = m[0][1];
    m44.fMap[1][1] = m[1][1];
    m44.fMap[1][2] = m[2][1];
    m44.fMap[1][3] = m[3][1];
    
    m44.fMap[2][0] = m[0][2];
    m44.fMap[2][1] = m[1][2];
    m44.fMap[2][2] = m[2][2];
    m44.fMap[2][3] = m[3][2];
    
    m44.IsIdentity();

    return m44;
}

Matrix3 plMaxNodeBase::Matrix44ToMatrix3(const hsMatrix44& m44)
{
    Matrix3 m3;

    MRow* m = m3.GetAddr();

    m[0][0] = m44.fMap[0][0];
    m[1][0] = m44.fMap[0][1];
    m[2][0] = m44.fMap[0][2];
    m[3][0] = m44.fMap[0][3];

    m[0][1] = m44.fMap[1][0];
    m[1][1] = m44.fMap[1][1];
    m[2][1] = m44.fMap[1][2];
    m[3][1] = m44.fMap[1][3];

    m[0][2] = m44.fMap[2][0];
    m[1][2] = m44.fMap[2][1];
    m[2][2] = m44.fMap[2][2];
    m[3][2] = m44.fMap[2][3];

    m3.ValidateFlags();

    return m3;
}