public Present Evaluate(Present[] paramList)
{
D.Assert(paramList.Length == 4);
MapRectangleParameter parameter = (MapRectangleParameter)paramList[0];
SizeParameter parameter2 = (SizeParameter)paramList[1];
Present present = paramList[2];
Present present2 = paramList[3];
double num = Math.Min(parameter.value.LonExtent, parameter.value.LatExtent);
int num2 = Math.Max(parameter2.value.Width, parameter2.value.Height);
if ((num > 1.0) && (num2 <= 0x400))
{
IFuture future = this.prototype.Curry(new ParamDict(new object[] { TermName.ImageBounds, new MapRectangleParameter(this.unitRectangle), TermName.OutputSize, new SizeParameter(this.memoizedSize), TermName.UseDocumentTransparency, present, TermName.ExactColors, present2 }));
StrongHash hash = new StrongHash();
future.AccumulateRobustHash(hash);
D.Sayf(0, "Future {0} hashes to {1}", new object[] { RobustHashTools.DebugString(future), hash.ToString() });
Present present3 = future.Realize("sourceImageDownsampler-memo");
if (present3 is ImageRef)
{
try
{
ImageRef ref2 = (ImageRef)present3;
GDIBigLockedImage image = new GDIBigLockedImage(parameter2.value, "sourceImageDownsampler-downsample");
lock (ref2.image)
{
lock (image)
{
Graphics graphics = image.IPromiseIAmHoldingGDISLockSoPleaseGiveMeTheGraphics();
MapRectangle region = parameter.value.Intersect(this.unitRectangle);
if (!region.IsEmpty())
{
RectangleF srcRect = this.SelectSubRectangle(this.unitRectangle, region, this.memoizedSize);
RectangleF destRect = this.SelectSubRectangle(parameter.value, region, parameter2.value);
Image image2 = ref2.image.IPromiseIAmHoldingGDISLockSoPleaseGiveMeTheImage();
graphics.InterpolationMode = InterpolationMode.HighQualityBilinear;
graphics.DrawImage(image2, destRect, srcRect, GraphicsUnit.Pixel);
}
graphics.Dispose();
return(new ImageRef(new ImageRefCounted(image)));
}
}
}
catch (ArgumentException)
{
return(new PresentFailureCode("Image processing overflow"));
}
catch (OverflowException)
{
return(new PresentFailureCode("Image processing overflow"));
}
catch (Exception exception)
{
return(new PresentFailureCode(exception));
}
finally
{
present3.Dispose();
}
}
return(present3);
}
return(this.prototype.Curry(new ParamDict(new object[] { TermName.ImageBounds, parameter, TermName.OutputSize, parameter2, TermName.UseDocumentTransparency, present, TermName.ExactColors, present2 })).Realize("sourceImageDownsampler-passthru"));
}
