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);
}
}
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);
}
}