コード例 #1
0
        public void VisitPixel(Rectangle aoiRect, int[] aoi, int[] bandNos, Action <int, T[]> extractAction)
        {
            IRasterBand[] bands    = GetRasterBands(bandNos);
            T[][]         buffers  = BuildBuffers(aoiRect, bandNos.Length);
            enumDataType  dataType = _argProvider.DataProvider.DataType;
            int           width    = _argProvider.DataProvider.Width;

            T[] pixelBuffer = new T[bandNos.Length];
            int oIdx = 0, idx = 0;

            GCHandle[] handles = GetHandles(buffers);
            try
            {
                if (aoi == null || aoi.Length == 0)
                {
                    for (int r = aoiRect.Top; r < aoiRect.Bottom; r++, oIdx = r * width, idx = 0)
                    {
                        for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                        {
                            bands[bIdx].Read(aoiRect.Left, r, aoiRect.Width, 1, handles[bIdx].AddrOfPinnedObject(), dataType, aoiRect.Width, 1);
                        }
                        oIdx += aoiRect.Left;
                        for (int c = aoiRect.Left; c < aoiRect.Width; c++, oIdx++, idx++)
                        {
                            for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                            {
                                pixelBuffer[bIdx] = buffers[bIdx][idx];
                            }
                            extractAction(oIdx, pixelBuffer);
                        }
                    }
                }
                else
                {
                    Dictionary <int, AOIHelper.AOIRowRange> aoirows = AOIHelper.ComputeRowIndexRange(aoi, new Size(_argProvider.DataProvider.Width, _argProvider.DataProvider.Height));
                    foreach (int r in aoirows.Keys)
                    {
                        for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                        {
                            bands[bIdx].Read(aoiRect.Left, r, aoiRect.Width, 1, handles[bIdx].AddrOfPinnedObject(), dataType, aoiRect.Width, 1);
                        }
                        idx = 0;
                        AOIHelper.AOIRowRange range = aoirows[r];
                        for (int aoiidx = range.BeginIndex; aoiidx < range.EndIndex; aoiidx++)
                        {
                            oIdx = aoi[aoiidx];
                            int orow = oIdx / width;
                            int ocol = oIdx - orow * width;
                            for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                            {
                                pixelBuffer[bIdx] = buffers[bIdx][ocol - aoiRect.Left];
                            }
                            extractAction(oIdx, pixelBuffer);
                        }
                    }
                }
            }
            finally
            {
                FreeHandles(handles);
            }
        }
コード例 #2
0
        public void VisitPixelWnd(Rectangle aoiRect, int[] aoi, int[] bandNos, int[] wndBandNos, int minWndSize, int maxWndSize, Func <int, int, T[], T[][], bool> isNeedIncWndSize, Action <int, int, T[], T[][]> extractAction)
        {
            _wndAccessor.Reset(wndBandNos, aoiRect);
            int crtWndSize = minWndSize;

            IRasterBand[] bands    = GetRasterBands(bandNos);
            T[][]         buffers  = BuildBuffers(aoiRect, bandNos.Length);
            enumDataType  dataType = _argProvider.DataProvider.DataType;
            int           width    = _argProvider.DataProvider.Width;

            T[]   pixelBuffer = new T[bandNos.Length];
            T[][] wndBuffers  = new T[wndBandNos.Length][];
            BuildWndBuffers(crtWndSize, wndBuffers);
            int oIdx = 0, idx = 0;

            GCHandle[] handles = GetHandles(buffers);
            try
            {
                if (aoi == null || aoi.Length == 0)
                {
                    for (int r = aoiRect.Top; r < aoiRect.Bottom; r++, oIdx = r * width, idx = 0)
                    {
                        for (int bandIdx = 0; bandIdx < bands.Length; bandIdx++)
                        {
                            bands[bandIdx].Read(aoiRect.Left, r, aoiRect.Width, 1, handles[bandIdx].AddrOfPinnedObject(), dataType, aoiRect.Width, 1);
                        }
                        oIdx += aoiRect.Left;
                        for (int c = aoiRect.Left; c < aoiRect.Width; c++, oIdx++, idx++)
                        {
                            for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                            {
                                pixelBuffer[bIdx] = buffers[bIdx][idx];
                            }
                            //
                            if (!_wndAccessor.ReadWndPixels(oIdx, crtWndSize, wndBuffers))
                            {
                                continue;
                            }
                            while (isNeedIncWndSize(oIdx, crtWndSize, pixelBuffer, wndBuffers) && crtWndSize < maxWndSize)
                            {
                                crtWndSize += 2;//1,3,5,7,9,...
                                BuildWndBuffers(crtWndSize, wndBuffers);
                                //目前这里有个bug,扩大窗口后,没有为wndBuffers赋值,但是直接在这里读取的话,程序速度会很慢。
                            }
                            //by chennan 20121226修改火点判识与一期不一致问题
                            crtWndSize = minWndSize;
                            BuildWndBuffers(crtWndSize, wndBuffers);
                            _wndAccessor.ReadWndPixels(oIdx, crtWndSize, wndBuffers);
                            //
                            extractAction(oIdx, crtWndSize, pixelBuffer, wndBuffers);
                        }
                    }
                }
                else
                {
                    Dictionary <int, AOIHelper.AOIRowRange> aoirows = AOIHelper.ComputeRowIndexRange(aoi, new Size(_argProvider.DataProvider.Width, _argProvider.DataProvider.Height));
                    foreach (int r in aoirows.Keys)
                    {
                        for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                        {
                            bands[bIdx].Read(aoiRect.Left, r, aoiRect.Width, 1, handles[bIdx].AddrOfPinnedObject(), dataType, aoiRect.Width, 1);
                        }
                        idx = 0;
                        AOIHelper.AOIRowRange range = aoirows[r];
                        for (int aoiidx = range.BeginIndex; aoiidx < range.EndIndex; aoiidx++)
                        {
                            oIdx = aoi[aoiidx];
                            int orow = oIdx / width;
                            int ocol = oIdx - orow * width;
                            for (int bIdx = 0; bIdx < bands.Length; bIdx++)
                            {
                                pixelBuffer[bIdx] = buffers[bIdx][ocol - aoiRect.Left];
                            }
                            //
                            if (!_wndAccessor.ReadWndPixels(oIdx, crtWndSize, wndBuffers))
                            {
                                continue;
                            }
                            while (isNeedIncWndSize(oIdx, crtWndSize, pixelBuffer, wndBuffers) && crtWndSize < maxWndSize)
                            {
                                crtWndSize += 2;
                                BuildWndBuffers(crtWndSize, wndBuffers);
                                ////by chennan 高温火点窗口数据读取
                                //_wndAccessor.ReadWndPixels(oIdx, crtWndSize-2, wndBuffers);
                                //目前这里有个bug,扩大窗口后,没有为wndBuffers赋值,但是直接在这里读取的话,程序速度会很慢。
                            }
                            //by chennan 20121226修改火点判识与一期不一致问题
                            crtWndSize = minWndSize;
                            BuildWndBuffers(crtWndSize, wndBuffers);
                            _wndAccessor.ReadWndPixels(oIdx, crtWndSize, wndBuffers);
                            //
                            extractAction(oIdx, crtWndSize, pixelBuffer, wndBuffers);
                        }
                    }
                }
            }
            finally
            {
                FreeHandles(handles);
            }
        }