void
UsdMayaGLSoftSelectHelper::_PopulateWeights()
{
// we don't want to fallback to the active selection if there is no sot
// select
bool defaultToActiveSelection = false;
MRichSelection softSelect;
MGlobal::getRichSelection(softSelect, defaultToActiveSelection);
MSelectionList selection;
softSelect.getSelection(selection);
for (MItSelectionList iter( selection, MFn::kInvalid); !iter.isDone(); iter.next() ) {
MDagPath dagPath;
MObject component;
iter.getDagPath(dagPath, component);
// component.isNull() indcates that we're selecting a whole object, as
// opposed to a component.
if (!component.isNull()) {
continue;
}
float weight = 0.0f;
_dagPathsToWeight[dagPath] = weight;
}
}
MStatus richMoveCmd::action( int flag )
//
// Description
// Do the actual work here to move the objects by vector
//
{
MStatus stat;
MVector vector = delta;
switch( flag )
{
case UNDOIT: // undo
vector.x = -vector.x;
vector.y = -vector.y;
vector.z = -vector.z;
break;
case REDOIT: // redo
break;
case DOIT: // do command
break;
default:
break;
}
// Create a selection list iterator
//
MSelectionList slist;
MSpace::Space spc = MSpace::kWorld;
MRichSelection rs;
MGlobal::getRichSelection( rs);
// Translate all selected objects
//
rs.getSelection( slist);
if( !slist.isEmpty())
{
for ( MItSelectionList iter( slist, MFn::kInvalid); !iter.isDone(); iter.next() )
{
// Get path and possibly a component
//
MDagPath mdagPath; // Item dag path
MObject mComponent; // Current component
iter.getDagPath( mdagPath, mComponent );
MPlane seam;
rs.getSymmetryPlane( mdagPath, spc, seam);
if( mComponent.isNull())
{
// Transform move
MFnTransform transFn( mdagPath, &stat );
if ( MS::kSuccess == stat ) {
stat = transFn.translateBy( vector, spc );
CHECKRESULT(stat,"Error doing translate on transform");
continue;
}
}
else
{
// Component move
iter.getDagPath( mdagPath, mComponent );
for( MItGeometry geoIter( mdagPath, mComponent); !geoIter.isDone(); geoIter.next())
{
MVector origPosition = geoIter.position( spc);
MWeight weight = geoIter.weight();
// Calculate the soft move
MVector position = origPosition + vector * weight.influence();
// Calculate the soft seam
position += seam.normal() * (weight.seam() * (seam.directedDistance( origPosition) - seam.directedDistance( position)));
geoIter.setPosition( position, spc);
}
}
}
}
// Translate all symmetry objects
//
slist.clear();
rs.getSymmetry( slist);
if( !slist.isEmpty())
{
for ( MItSelectionList iter( slist, MFn::kInvalid); !iter.isDone(); iter.next() )
{
// Get path and possibly a component
//
MDagPath mdagPath; // Item dag path
MObject mComponent; // Current component
iter.getDagPath( mdagPath, mComponent );
MPlane seam;
rs.getSymmetryPlane( mdagPath, spc, seam);
// Reflect our world space move
//
MMatrix symmetryMatrix;
rs.getSymmetryMatrix( mdagPath, spc, symmetryMatrix);
MVector symmetryVector = vector * symmetryMatrix;
if( mComponent.isNull())
{
// Transform move
MFnTransform transFn( mdagPath, &stat );
if ( MS::kSuccess == stat ) {
stat = transFn.translateBy( symmetryVector, spc );
CHECKRESULT(stat,"Error doing translate on transform");
continue;
}
}
else
{
// Component move
iter.getDagPath( mdagPath, mComponent );
for( MItGeometry geoIter( mdagPath, mComponent); !geoIter.isDone(); geoIter.next())
{
MVector origPosition = geoIter.position( spc);
MWeight weight = geoIter.weight();
// Calculate the soft move
MVector position = origPosition + symmetryVector * weight.influence();
// Calculate the soft seam
position += seam.normal() * (weight.seam() * (seam.directedDistance( origPosition) - seam.directedDistance( position)));
geoIter.setPosition( position, spc);
}
}
}
}
return MS::kSuccess;
}