Hi
I have posted this problem in a previous question and Bill kindly looked at it but couldn't find a solution, so I emailed it to Fabrizio who is obviously busy. I have kept trying to find a solution to the problem but despite my best efforts have still failed to come up with the answer.
Basically what I'm trying to do is to 'scrape' separate map images together from the internet and then tile them to produce a map. The problem is that the final PNG image that I end up with should be coloured but ends up being black and white. If I save the original TIEBitMap that I have constructed as a TBitMap this is saved correctly as a coloured BMP, so the problem you would think, must occur when I assign the TIEBitMap to the TImageEnView component before saving it as a PNG.
Here is my problem in pseudo code:
var
iebmp : TIEBitMap;
xpos : integer;
ypos : integer;
col : integer;
row : integer;
bmp : TBitMap;
for row:=1 to 5 do
begin
xpos:=0;
for col:=1 to 5 do
begin
Image.IO.LoadFromURL(SomeURL); Image.IEBitmap.RenderToTIEBitmapEx(iebmp,xpos,ypos,256,256,0,0,256,256,255,rfHermite);
inc(xpos,256);
end;
inc(ypos,256);
end;
bmp:=TBitMap.Create;
try
iebmp.CopyToTBitmap(bmp);
bmp.SaveToFile('Image.BMP');
finally
bmp.Free;
end;
Image.Clear;
Image.IEBitmap.Assign(iebmp);
Image.IO.SaveToFilePNG('Image.PNG');
Bruce.
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Tiling images problem
Posted - Nov 18 2013 : 08:16:02
