Examples of org.geotools.geometry.GeneralEnvelope.intersect()

Class org.geotools.geometry.GeneralEnvelope

Examples of org.geotools.geometry.GeneralEnvelope.intersect()

org.geotools.geometry.GeneralEnvelope.intersect()
Sets this envelope to the intersection if this envelope with the specified one.
This method assumes that the specified envelope uses the same CRS than this envelope. For performance reason, it will no be verified unless J2SE assertions are enabled. @param envelope the {@code Envelope} to intersect to this envelope. @throws MismatchedDimensionException if the specified envelope doesn't have the expected dimension.

        try {
                final GeneralEnvelope cropBBOXInRequestCRS = CRS.transform(cropBBox,
                        requestedBBox.getCoordinateReferenceSystem());
        cropBBOXInRequestCRS.setCoordinateReferenceSystem(requestedBBox.getCoordinateReferenceSystem());
        //make sure it falls within the requested envelope
        cropBBOXInRequestCRS.intersect(requestedBBox);
        
        //now go back to raster space 
        destinationRasterArea =  new GeneralGridEnvelope(CRS.transform(requestedWorldToGrid,cropBBOXInRequestCRS),PixelInCell.CELL_CORNER,false).toRectangle();
        //intersect with the original requested raster space to be sure that we stay within the requested raster area
        XRectangle2D.intersect(destinationRasterArea, requestedRasterArea, destinationRasterArea);

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                validArea = targetBox;
            } else if (targetBox == null) {
                validArea = sourceBox;
            } else {
                final GeneralEnvelope area = new GeneralEnvelope(sourceBox);
                area.intersect(new GeneralEnvelope(sourceBox));
                try {
                    validArea = new GeographicBoundingBoxImpl(area);
                } catch (TransformException e) {
                    // Should never happen, because we know that 'area' CRS is WGS84.
                    throw new AssertionError(e);

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        final GeneralEnvelope oldEnvelope = (GeneralEnvelope) gc.getEnvelope();
        // intersect the envelopes in order to prepare for cropping the coverage
        // down to the neded resolution
        final GeneralEnvelope intersectionEnvelope = new GeneralEnvelope(envelope);
        intersectionEnvelope.setCoordinateReferenceSystem(envelope.getCoordinateReferenceSystem());
        intersectionEnvelope.intersect((GeneralEnvelope) oldEnvelope);


        // Do we have something to show? After the crop I could get a null
        // coverage which would mean nothing to show.
        if (intersectionEnvelope.isEmpty()) {
            return null;

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    //
    // //
    final GeneralEnvelope intersectionEnvelope = new GeneralEnvelope((Envelope) destinationEnvelope);
    intersectionEnvelope.setCoordinateReferenceSystem(source.getCoordinateReferenceSystem());
    // intersect the envelopes
    intersectionEnvelope.intersect(sourceEnvelope);
    if (intersectionEnvelope.isEmpty())
      throw new CannotCropException(Errors.format(ErrorKeys.CANT_CROP));


        // intersect the ROI with the intersection envelope and throw an error if they do not intersect
        if(cropRoi != null) {

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            // intersect the requested area with the bounds of this
            // layer in native crs
            if (!adjustedRequestedEnvelope.intersects(baseEnvelope2D, true))
                return null;
            adjustedRequestedEnvelope.intersect(baseEnvelope2D);
            adjustedRequestedEnvelope.setCoordinateReferenceSystem(spatialReferenceSystem2D);


            // //
            //
            // transform the intersection envelope from the destination world

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            try {
                final GeneralEnvelope cropBBOXInRequestCRS = CRS.transform(cropBBox,
                        requestedBBox.getCoordinateReferenceSystem());
                cropBBOXInRequestCRS.setCoordinateReferenceSystem(requestedBBox.getCoordinateReferenceSystem());
                // make sure it falls within the requested envelope
                cropBBOXInRequestCRS.intersect(requestedBBox);


                // now go back to raster space
                destinationRasterArea = new GeneralGridEnvelope(CRS.transform(requestedWorldToGrid,
                        cropBBOXInRequestCRS), PixelInCell.CELL_CORNER, false).toRectangle();
                // intersect with the original requested raster space to be sure that we stay within the requested raster area

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            }


            // now we have enough info to read the coverage, grab the parameters
            // and add the grid geometry info
            final GeneralEnvelope intersectionEnvelopeInSourceCRS = new GeneralEnvelope(requestedEnvelopeInSourceCRS);
            intersectionEnvelopeInSourceCRS.intersect(originalEnvelope);
            final GeneralEnvelope intersectionEnvelope= 
              bboxToNativeTx.isIdentity()?
                  new GeneralEnvelope(intersectionEnvelopeInSourceCRS):
                  CRS.transform(bboxToNativeTx.inverse(), intersectionEnvelopeInSourceCRS);
            intersectionEnvelope.setCoordinateReferenceSystem(targetCRS);

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                }
            }
        }
        
        // just do the intersection since
        envelope.intersect(coverageBounds);
        
        if (envelope.isEmpty()) {
            return null;
        }

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            final CoordinateReferenceSystem nativeCRS = reader.getCrs();
            if(!CRS.equalsIgnoreMetadata(requestCRS, nativeCRS)) {
                requestedEnvelope = CRS.transform(CRS.findMathTransform(requestCRS, nativeCRS, true), requestedEnvelope);
            }
            // intersect with the native envelope, we cannot read outside of it
            requestedEnvelope.intersect(reader.getOriginalEnvelope());
            
            // check if we are still reading anything
            if(!requestedEnvelope.isEmpty()) {
                MathTransform crsToGrid = meta.getGrid().getGridToCRS().inverse();
                GeneralEnvelope requestedGrid = CRS.transform(crsToGrid, requestedEnvelope);

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            // now we have enough info to read the coverage, grab the parameters
            // and add the grid geometry info
            final GeneralEnvelope intersectionEnvelopeInSourceCRS = new GeneralEnvelope(
                    requestedEnvelopeInNativeCRS);
            intersectionEnvelopeInSourceCRS.intersect(originalEnvelope);


            final GridGeometry2D requestedGridGeometry = new GridGeometry2D(
                    PixelInCell.CELL_CENTER, gridToCRS, intersectionEnvelopeInSourceCRS, null);


            final ParameterValueGroup readParametersDescriptor = reader.getFormat()

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