Пример #1
0
        public static bool GetPoints(FileStream file, int cksize, ref lwPointList point, ref int flen)
        {
            byte[] f = new byte[cksize];
            int np;

            if (cksize == 1)
                return true;

            /* extend the point array to hold the new points */

            np = cksize / 12;
            point.offset = point.count;
            point.count += np;
            point.pt = new lwPoint[point.count];

            /* read the whole chunk */

            flen += file.Read(f, 0, cksize);
            lwio.revbytes(ref f, 4, np * 3);

            /* assign position values */

            for (int i = 0, j = 0; i < np; i++, j += 3)
            {
                point.pt[i].pos = new float[3];
                point.pt[i].pos[0] = BitConverter.ToSingle(f, j * 4);
                point.pt[i].pos[1] = BitConverter.ToSingle(f, (j + 1) * 4);
                point.pt[i].pos[2] = BitConverter.ToSingle(f, (j + 2) * 4);
            }

            return true;
        }
Пример #2
0
        public static bool GetPoints(FileStream file, int cksize, ref lwPointList point, ref int flen)
        {
            byte[] f = new byte[cksize];
            int    np;

            if (cksize == 1)
            {
                return(true);
            }

            /* extend the point array to hold the new points */

            np           = cksize / 12;
            point.offset = point.count;
            point.count += np;
            point.pt     = new lwPoint[point.count];

            /* read the whole chunk */

            flen += file.Read(f, 0, cksize);
            lwio.revbytes(ref f, 4, np * 3);

            /* assign position values */

            for (int i = 0, j = 0; i < np; i++, j += 3)
            {
                point.pt[i].pos    = new float[3];
                point.pt[i].pos[0] = BitConverter.ToSingle(f, j * 4);
                point.pt[i].pos[1] = BitConverter.ToSingle(f, (j + 1) * 4);
                point.pt[i].pos[2] = BitConverter.ToSingle(f, (j + 2) * 4);
            }

            return(true);
        }