transformPoints() public method

public transformPoints ( float points ) : void
points float
return void
        public override BitMatrix sampleGrid(BitMatrix image, int dimension, PerspectiveTransform transform)
        {
            var bits = new BitMatrix(dimension);
            var points = new float[dimension << 1];
            for (int y = 0; y < dimension; y++)
            {
                int max = points.Length;

                float iValue = y + 0.5f;
                for (int x = 0; x < max; x += 2)
                {

                    points[x] = (x >> 1) + 0.5f;
                    points[x + 1] = iValue;
                }
                transform.transformPoints(points);
                // Quick check to see if points transformed to something inside the image;
                // sufficient to check the endpoints
                checkAndNudgePoints(image, points);
                try
                {
                    for (int x = 0; x < max; x += 2)
                    {

                        if (image.get_Renamed((int) points[x], (int) points[x + 1]))
                        {
                            // Black(-ish) pixel
                            bits.set_Renamed(x >> 1, y);
                        }
                    }
                }
                catch (IndexOutOfRangeException)
                {
                    // This feels wrong, but, sometimes if the finder patterns are misidentified, the resulting
                    // transform gets "twisted" such that it maps a straight line of points to a set of points
                    // whose endpoints are in bounds, but others are not. There is probably some mathematical
                    // way to detect this about the transformation that I don't know yet.
                    // This results in an ugly runtime exception despite our clever checks above -- can't have
                    // that. We could check each point's coordinates but that feels duplicative. We settle for
                    // catching and wrapping ArrayIndexOutOfBoundsException.
                    throw ReaderException.Instance;
                }
            }
            return bits;
        }