Examples of org.opengis.referencing.operation.MathTransform2D.transform()

Package org.opengis.referencing.operation

Class org.opengis.referencing.operation.MathTransform2D

Examples of org.opengis.referencing.operation.MathTransform2D.transform()

org.opengis.referencing.operation.MathTransform2D.transform()
Transforms the specified {@code ptSrc} and stores the result in {@code ptDst}. If {@code ptDst} is {@code null}, a new {@link Point2D} object is allocatedand then the result of the transformation is stored in this object. In either case, {@code ptDst}, which contains the transformed point, is returned for convenience. If {@code ptSrc} and {@code ptDst} are the same object, the input point iscorrectly overwritten with the transformed point. @param ptSrc the coordinate point to be transformed. @param ptDst the coordinate point that stores the result of transforming {@code ptSrc}, or {@code null} if a new point should be created. @return the coordinate point after transforming {@code ptSrc} and stroring the resultin {@code ptDst} or in a new point if {@code ptDst} was null. @throws TransformException if the point can't be transformed.

            Point gridP = new Point();
            Point2D.Double geoP = new Point2D.Double();
            int[] covValue = new int[1];
            for (gridP.y = 0; gridP.y < gridDim.height; gridP.y++) {
                for (gridP.x = 0; gridP.x < gridDim.width; gridP.x++) {
                    mt.transform(gridP, geoP);
                }


                cov.evaluate(geoP, covValue);
                if (covValue[0] != 0) {
                    assertTrue(rects.get(covValue[0]).contains(geoP.x, geoP.y));

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            }
        }


        Point2D lc = toPoint2D(envelope.getLowerCorner());
        Point lcGrid = new Point();
        mt.transform(lc, lcGrid);


        Point2D uc = toPoint2D(envelope.getUpperCorner());
        Point ucGrid = new Point();
        mt.transform(uc, ucGrid);

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        Point lcGrid = new Point();
        mt.transform(lc, lcGrid);


        Point2D uc = toPoint2D(envelope.getUpperCorner());
        Point ucGrid = new Point();
        mt.transform(uc, ucGrid);


        GridEnvelope2D gridEnv = new GridEnvelope2D(
                Math.min(lcGrid.x, ucGrid.x),
                Math.min(lcGrid.y, ucGrid.y),
                Math.abs(lcGrid.x - ucGrid.x),

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        MathTransform2D mt = getGridToCRS2D();


        if (getGridRange2D().contains(gridEnv)) {
            GridCoordinates2D low = gridEnv.getLow();
            Point2D trLow = mt.transform(new Point2D.Double(low.x - 0.5, low.y - 0.5), null);


            GridCoordinates2D high = gridEnv.getHigh();
            Point2D trHigh = mt.transform(new Point2D.Double(high.x + 0.5, high.y + 0.5), null);


            return new Envelope2D(

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        if (getGridRange2D().contains(gridEnv)) {
            GridCoordinates2D low = gridEnv.getLow();
            Point2D trLow = mt.transform(new Point2D.Double(low.x - 0.5, low.y - 0.5), null);


            GridCoordinates2D high = gridEnv.getHigh();
            Point2D trHigh = mt.transform(new Point2D.Double(high.x + 0.5, high.y + 0.5), null);


            return new Envelope2D(
                    new DirectPosition2D(crs2D, trLow.getX(), trLow.getY()),
                    new DirectPosition2D(crs2D, trHigh.getX(), trHigh.getY()));

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