Tracking Rectangles with Java/C++

[dvanvoorst]

Originally Posted by rudun

Would this be how to use the detectRectangles function in java. We looked at the ellipseDetect and I am thinking that hey do the same thing just based on different descriptors.

    private static final BlockingFunction imaqDetectRectanglesFn =
            NativeLibrary.getDefaultInstance().getBlockingFunction("imaqDetectRectangles");
    static { imaqDetectRectanglesFn.setTaskExecutor(NIVision.taskExecutor); }
    private static Pointer numberOfRectanglesDetected = new Pointer(4);
    
     public static RectangleMatch[] detectRectangles(MonoImage image, RectangleDescriptor rectangleDescriptor,
            CurveOptions curveOptions, ShapeDetectionOptions shapeDetectionOptions,
            RegionOfInterest roi) throws NIVisionException {

        int curveOptionsPointer = 0;
        if (curveOptions != null)
            curveOptionsPointer = curveOptions.getPointer().address().toUWord().toPrimitive();
        int shapeDetectionOptionsPointer = 0;
        if (shapeDetectionOptions != null)
            shapeDetectionOptionsPointer = shapeDetectionOptions.getPointer().address().toUWord().toPrimitive();
        int roiPointer = 0;
        if (roi != null)
            roiPointer = roi.getPointer().address().toUWord().toPrimitive();

        int returnedAddress =
                imaqDetectRectanglesFn.call6(
                image.image.address().toUWord().toPrimitive(),
                rectangleDescriptor.getPointer().address().toUWord().toPrimitive(),
                curveOptionsPointer, shapeDetectionOptionsPointer,
                roiPointer,
                numberOfRectanglesDetected.address().toUWord().toPrimitive());

        try {
            NIVision.assertCleanStatus(returnedAddress);
        } catch (NIVisionException ex) {
            if (!ex.getMessage().equals("No error."))
                throw ex;
        }

        RectanglesMatch[] matches = RectanglesMatch.getMatchesFromMemory(returnedAddress, numberOfRectanglesDetected.getInt(0));
        NIVision.dispose(new Pointer(returnedAddress,0));
        return matches;
    }

Where are RectangleMatch and RectangleDescriptor defined? I'd love to use this code to learn more about wrapping the IMAQ functions, but I'm running stuck getting it to compile.