private Geometry getSimpleLine(final Geometry geometry, final double dTolerance) {
Geometry simple;
if (m_bPreserve) {
simple = TopologyPreservingSimplifier.simplify(geometry, dTolerance);
} else {
simple = DouglasPeuckerSimplifier.simplify(geometry, dTolerance);
}
return simple;
}
/**
* Utility method for transforming a geometry ROI into the raster space, using the provided affine
* transformation.
*
* @param roi a {@link Geometry} in model space.
* @param mt2d an {@link AffineTransform} that maps from raster to model space. This is already
* referred to the pixel corner.
* @return a {@link ROI} suitable for using with JAI.
* @throws ProcessException in case there are problems with ivnerting the provided {@link
* AffineTransform}. Very unlikely to happen.
*/
public static ROI prepareROI(Geometry roi, AffineTransform mt2d) throws ProcessException {
// transform the geometry to raster space so that we can use it as a ROI source
Geometry rasterSpaceGeometry;
try {
rasterSpaceGeometry = JTS.transform(roi, new AffineTransform2D(mt2d.createInverse()));
} catch (MismatchedDimensionException e) {
throw new ProcessException(e);
} catch (TransformException e) {
throw new ProcessException(e);
} catch (NoninvertibleTransformException e) {
throw new ProcessException(e);
}
// System.out.println(rasterSpaceGeometry);
// System.out.println(rasterSpaceGeometry.getEnvelopeInternal());
// simplify the geometry so that it's as precise as the coverage, excess coordinates
// just make it slower to determine the point in polygon relationship
Geometry simplifiedGeometry = DouglasPeuckerSimplifier.simplify(rasterSpaceGeometry, 1);
// build a shape using a fast point in polygon wrapper
return new ROIGeometry(simplifiedGeometry);
}
