void WorldEditorSelection::scale(const VectorF & scale)
{
for( iterator iter = begin(); iter != end(); ++ iter )
{
SceneObject* object = dynamic_cast< SceneObject* >( *iter );
if( !object )
continue;
VectorF current = object->getScale();
current.convolve(scale);
// clamp scale to sensible limits
current.setMax( Point3F( 0.01f ) );
current.setMin( Point3F( 1000.0f ) );
object->setScale(current);
}
mCentroidValid = false;
}
void WorldEditorSelection::scale(const VectorF & scale, const Point3F & center)
{
for( iterator iter = begin(); iter != end(); ++ iter )
{
SceneObject* object = dynamic_cast< SceneObject* >( *iter );
if( !object )
continue;
VectorF current = object->getScale();
current.convolve(scale);
// clamp scale to sensible limits
current.setMax( Point3F( 0.01f ) );
current.setMin( Point3F( 1000.0f ) );
// Apply the scale first. If the object's scale doesn't change with
// this operation then this object doesn't scale. In this case
// we don't want to continue with the offset operation.
VectorF prevScale = object->getScale();
object->setScale(current);
if( !object->getScale().equal(current) )
continue;
// determine the actual scale factor to apply to the object offset
// need to account for the scale limiting above to prevent offsets
// being reduced to 0 which then cannot be restored by unscaling
VectorF adjustedScale = current / prevScale;
MatrixF mat = object->getTransform();
Point3F pos;
mat.getColumn(3, &pos);
Point3F offset = pos - center;
offset *= adjustedScale;
object->setPosition(offset + center);
}
}