[mapguide-users] Transform Coordinates from MgPoint

[Jim O'Leary]

I am able to transform coordinates on the fly from a FeatureReader,
but not from an MgPoint. Both codes below produce an MgGeometry object, 
and both codes produce a $transform object like this:

$coordSysFactory = new MgCoordinateSystemFactory();
$source = $coordSysFactory->Create($map->GetMapSRS());
$target = $coordSysFactory->Create($LL84WKT);// $LL84WKT is a the WKT string
for LL84
$transform =  new MgCoordinateSystemTransform($source, $target);

I've pasted the doxygen comments in the code below for clarity.
The FeatureReader code that works goes:

$agfWriter = new MgAgfReaderWriter();
while ($featureReader->ReadNext())
{
    // MgByteReader *  GetGeometry (CREFSTRING propertyName)=0
    // Gets the Geometry for the specified property.
    $byteReader = $featureReader->GetGeometry('GEOMETRY');
    // MgGeometry *  Read (MgByteReader *agf)
    // Translates an MgByteReader object into an MgGeometry object.
    $geometry = $agfReaderWriter->Read($byteReader);
    $geometry = $geometry->Transform($transform);

The MgPoint code that doesn't work goes:

// MgCoordinate *  CreateCoordinateXY (double x, double y)
// Creates an MgCoordinate object with Dimension = XY
$coord = $geometryFactory->CreateCoordinateXY((double) $_REQUEST['x'],
(double) $_REQUEST['y']);
// MgPoint *  CreatePoint (MgCoordinate *coordinate)
// Creates a point from a coordinate.
$point = $geometryFactory->CreatePoint($coord);
// MgPoint is a subclass of MgGeometry
$point = $point->Transform($transform);

One MgGeometry object can transform, but one cannot. All I get from the
second is a nonsense number. Suggestions?
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