constraints/constraintdeformer/orconstraintdeformer_constraint.cxx

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 Autodesk(R) Open Reality(R) Samples
 
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//--- Class declarations
#include "orconstraintdeformer_constraint.h"
#include "orconstraintdeformer_layout.h"

//--- Registration defines
#define ORCONSTRAINTDEFORMER__CLASS     ORCONSTRAINTDEFORMER__CLASSNAME
#define ORCONSTRAINTDEFORMER__NAME      "Q-Stretch Deformer"
#define ORCONSTRAINTDEFORMER__LABEL     "OR - Q-Stretch Deformer"
#define ORCONSTRAINTDEFORMER__DESC      "OR - Q-Stretch Deformation Constraint"

//--- implementation and registration
FBConstraintImplementation  (   ORCONSTRAINTDEFORMER__CLASS     );
FBRegisterConstraint        (   ORCONSTRAINTDEFORMER__NAME,
                                ORCONSTRAINTDEFORMER__CLASS,
                                ORCONSTRAINTDEFORMER__LABEL,
                                ORCONSTRAINTDEFORMER__DESC,
                                FB_DEFAULT_SDK_ICON             );  // Icon filename (default=Open Reality icon)


template <> const char* FBPropertyBaseEnum<enum FBAlterPoints>::mStrings[] = {"kFBAlterPointsEven", "kFBAlterPointsOdd", "kFBAlterPointsBoth", NULL};

/************************************************
 *  Creation function.
 ************************************************/
bool ORConstraintDeformer::FBCreate()
{
    // Create reference groups
    mGroupSource        = ReferenceGroupAdd( "Source Object",   1 );
    mGroupDeform        = ReferenceGroupAdd( "Deform",          1 );

    // Constraint options
    Deformer            = true;
    HasLayout           = true;

    // Member variables
    mSourceTranslation  = NULL;
    mFirstTime              = true;

    double lDispMultiplier = 0.94;
    DispMultiplier.Init( this, "DispMultiplier",        ANIMATIONNODE_TYPE_NUMBER, &lDispMultiplier );
    FBPropertyPublish( this,AlterPoints,"AlterPoints",NULL,NULL);
    return true;
}


/************************************************
 *  Destruction function.
 ************************************************/
void ORConstraintDeformer::FBDestroy()
{
}

/************************************************
 *  Deformer Binding.
 ************************************************/

bool ORConstraintDeformer::ReferenceAddNotify( int pGroupIndex, FBModel* pModel )
{
    // Create node for deform
    if ( pGroupIndex==mGroupDeform )
    {
        DeformerBind(pModel);
    }
    return true;
}

bool ORConstraintDeformer::ReferenceRemoveNotify( int pGroupIndex, FBModel* pModel )
{
    // Unbind deform node from deformer callback
    if (pGroupIndex==mGroupDeform)
    {
        DeformerUnBind(pModel);
    }
    return true;
}

/************************************************
 *  Setup all of the animation nodes.
 ************************************************/
void ORConstraintDeformer::SetupAllAnimationNodes()
{
    // Create node for source
    if ( ReferenceGet( mGroupSource, 0 ) )
    {
        mSourceTranslation  = AnimationNodeOutCreate( 0, ReferenceGet( mGroupSource, 0 ), ANIMATIONNODE_TYPE_TRANSLATION );
        mGhostNode          = AnimationNodeInCreate ( 0, ReferenceGet( mGroupSource, 0 ), ANIMATIONNODE_TYPE_TRANSLATION );;
    }

    // Create node for deform
    if ( ReferenceGet( mGroupDeform, 0 ) )
    {
        mDeformTranslation = AnimationNodeOutCreate( 1, ReferenceGet( mGroupDeform, 0 ), ANIMATIONNODE_TYPE_TRANSLATION );
    }
}


/************************************************
 *  Removed all of the animation nodes.
 ************************************************/
void ORConstraintDeformer::RemoveAllAnimationNodes()
{
}


/************************************************
 *  Suggest a freeze.
 ************************************************/
void ORConstraintDeformer::FreezeSuggested()
{
    mFirstTime = true;

    if( ReferenceGet( 0, 0) )
    {
        FreezeSRT( (FBModel*)ReferenceGet( 0, 0), true, true, true );
    }
}


/************************************************
 *  Real-Time Engine Evaluation.
 ************************************************/
bool ORConstraintDeformer::AnimationNodeNotify(FBAnimationNode* pConnector,FBEvaluateInfo* pEvaluateInfo,FBConstraintInfo* pConstraintInfo)
{
    double lPosition[3];

    if( mSourceTranslation )
    {
        mSourceTranslation->ReadData    ( lPosition, pEvaluateInfo );
        mGhostNode->WriteData           ( lPosition, pEvaluateInfo );
        mPosition = lPosition;
    }

    return true;
}


/************************************************
 *  Real-Time Deformer Evaluation.
 ************************************************/
bool ORConstraintDeformer::DeformerNotify(FBModel* pModel,const FBVertex*  pSrcVertex,const FBVertex* pSrcNormal,int pCount,FBVertex*  pDstVertex,FBVertex*  pDstNormal)
{
    if (!mFirstTime)
    {
        FBTVector  mDelta;

        FBSub   ( mDelta,        mOldPosition,  mPosition       );
        FBAdd   ( mDisplacement, mDisplacement, mDelta          );
        FBMult  ( mDisplacement, mDisplacement, DispMultiplier  );

        for (int Count=0; Count<pCount; Count++)
        {
            if((AlterPoints==kFBAlterPointsBoth)
                || ((AlterPoints==kFBAlterPointsEven) && Count % 2==0)
                || ((AlterPoints==kFBAlterPointsOdd) && Count % 2==1))
            {
                double mLength = FBLength(pSrcVertex[Count]);

                pDstVertex[Count][0] = pSrcVertex[Count][0] + mDisplacement[0]*mLength*0.1/mScaling[0];
                pDstVertex[Count][1] = pSrcVertex[Count][1] + mDisplacement[1]*mLength*0.1/mScaling[1];
                pDstVertex[Count][2] = pSrcVertex[Count][2] + mDisplacement[2]*mLength*0.1/mScaling[2];
            } else
            {
                pDstVertex[Count][0] = pSrcVertex[Count][0];
                pDstVertex[Count][1] = pSrcVertex[Count][1];
                pDstVertex[Count][2] = pSrcVertex[Count][2];
            }
        }
    }
    mOldPosition = mPosition;

    if( mFirstTime )
    {
        mFirstTime = false;
    }

    return true;
}


/************************************************
 *  FBX Storage.
 ************************************************/
bool ORConstraintDeformer::FbxStore( FBFbxObject* pFbxObject, kFbxObjectStore pStoreWhat )
{
    return true;
}


/************************************************
 *  FBX Retrieval.
 ************************************************/
bool ORConstraintDeformer::FbxRetrieve( FBFbxObject* pFbxObject, kFbxObjectStore pStoreWhat )
{
    return true;
}