GU_SDF

[alinakipoglu]

Hi,

Im using GU_SDF to build SDF's from files. Whenever i try, i get a box as a result.

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// Class to pass volume created via SDF

class VRAY_VolumeBuilder: public VRAY_Volume
{

public:

VRAY_VolumeBuilder( GU_SDF_REF sdfRef_, UT_BoundingBox bbox_ );
~VRAY_VolumeBuilder();

public:

virtual void getBoxes( UT_RefArray<UT_BoundingBox> &boxes, float radius, float dbound, float zerothreshold ) const;

virtual void getAttributeBinding( UT_StringArray &names, UT_IntArray &sizes ) const;

virtual void evaluate( const UT_Vector3 &pos, const UT_Filter &filter, float radius, float time, int idx, float *data ) const;

virtual UT_Vector3 gradient( const UT_Vector3 &pos, const UT_Filter &filter, float radius, float time, int idx ) const;

protected:

GU_SDF_REF sdfRef;
UT_BoundingBox bbox;

};

VRAY_VolumeBuilder::VRAY_VolumeBuilder( GU_SDF_REF sdfRef_, UT_BoundingBox bbox_ )
:sdfRef( sdfRef_ )
,bbox( bbox_ )
{}

VRAY_VolumeBuilder::~VRAY_VolumeBuilder()
{}

void VRAY_VolumeBuilder::getBoxes( UT_RefArray<UT_BoundingBox> &boxes, float radius, float dbound, float zerothreshold ) const
{
boxes.append( bbox );
}

void VRAY_VolumeBuilder::getAttributeBinding( UT_StringArray &names, UT_IntArray &sizes ) const
{
names.append( "density" );
}

void VRAY_VolumeBuilder::evaluate( const UT_Vector3 &pos, const UT_Filter &filter, float radius, float time, int idx, float *data ) const
{
data[ 0 ] = sdfRef->getFunction()->evaluate( pos, filter, radius );
}

UT_Vector3 VRAY_VolumeBuilder::gradient( const UT_Vector3 &pos, const UT_Filter &filter, float radius, float time, int idx ) const
{
return sdfRef->getGradient( pos );
}

// Inside VRAY Procedural Render Method

GU_SDF_REF sdfRef( new GU_SDF() );
GU_SDFParms sdfParameters;

sdfParameters.setMode( GU_SDFParms::RAY_INTERSECT );
sdfParameters.setLaserScan( true );
sdfParameters.setFixSigns( true );
sdfParameters.setSweepCount( 3 );
sdfParameters.setSweepThreshold( 2.0f );

sdfParameters.setDivisions( 100, 100, 100 );
sdfParameters.setBBox( bbox );

sdfRef->build( gu, sdfParameters );

openVolumeObject();
addVolume( new VRAY_VolumeBuilder( sdfRef, bbox ), cameraShutter );
closeObject();