previousGrayImageDataList = [];

function updateGrayCanvasDataOnMatcghedLocation(termList, maskCanvasData, coloreImageData,
        grayImageData, grayImageMRDataList, bodyRegionId, canvasId)
{

  
    var n = maskCanvasData.data.length;
    var maskData = maskCanvasData.data;
    for (var z = 0; z < termList.length; z++) {

        if (previousGrayImageDataList[parseInt(bodyRegionId - 1)] != null) {
            grayImageData = previousGrayImageDataList[parseInt(bodyRegionId - 1)];

        }
      
        var grayImageDataVar = grayImageData.data;
        var coloredImageDataVar = coloreImageData.data;
        

        for (var i = 0; i < n; i += 4) {


            var RED = maskData[i] - 9;
            var GREEN = maskData[i + 1] - 9;
            var BLUE = maskData[i + 2] - 9;

            var Red;
            var Green;
            var Blue;
            var zero = "0";

            if ((RED).toString().length != 2) {
                Red = zero.concat((RED).toString())
            }
            else {
                Red = (RED).toString()
            }
            if ((GREEN).toString().length != 2) {
                Green = zero.concat((GREEN).toString())
            }
            else {
                Green = (GREEN).toString()

            }
            if ((BLUE).toString().length != 2) {
                Blue = zero.concat((BLUE).toString())
            }
            else {
                Blue = (BLUE).toString()

            }

            var Icolor = (Red + Green + Blue);

            if (parseInt(termList[z]._TermNumber) == parseInt(Icolor)) {

        

                var RED_coloredImage = coloredImageDataVar[i];

                grayImageDataVar[i] = RED_coloredImage;


                var GREEN_coloredImage = coloredImageDataVar[i + 1];
                grayImageDataVar[i + 1] = GREEN_coloredImage;

                var BLUE_coloredImage = coloredImageDataVar[i + 2];
                grayImageDataVar[i + 2] = BLUE_coloredImage;


                var ALPHA_coloredImage = coloredImageDataVar[i + 3];
                grayImageDataVar[i + 3] = ALPHA_coloredImage;

            }


        }

        previousGrayImageDataList[parseInt(bodyRegionId - 1)] = grayImageData;

 
}
    self.postMessage({
        'bodyRegionId': bodyRegionId,
        'value': grayImageData,
        'canvasId': canvasId


    });
}

self.onmessage = function (e) {
    
    updateGrayCanvasDataOnMatcghedLocation(e.data.termList, e.data.maskCanvasData, e.data.coloreImageData,
        e.data.grayImageData, e.data.grayImageMRDataList, e.data.bodyRegionId, e.data.canvasId);

}