Hallo,
I have some Rasterfiles (tif) and I use the KeyColors-Property to make the white Color transparent. But it doesn't work. I use GeoTiffRasterLayer with the following code:
this.KeyColors.Add(new GeoColor(0, 255, 255, 255));
this.LibraryType = GeoTiffLibraryType.UnmanagedLibTiff;
Oversee I something? Map-Units are meters.
I have attached one of these files.
Hi Torsten,
You should change it to this.KeyColors.Add(new GeoColor(255, 255, 255, 255)), the GeoColor is the color which you want to make transparent.
Regards,
Edgar
Hi Edgar,
Thank you for your answer. But the image is still not transparent. Any suggestions?
Torsten,
I tested your tiff image with the version 6.0.199.0 again, the result is correct, attached is the sample code and the result picture.
You can clearly see the white has disappeared.
Regards,
Edgar
post10861.txt (1.06 KB)
winformsMap1.GeoCanvas = new WicBitmapGeoCanvas();
Hallo Edgar,
after some tests I have found the reason. If I use WicBitmapGeoCanvas, the images are still not transparent.
Is these a real Limitation of WicBitmapGeoCanvas are a bug?
Regards Torsten
Hi Torsten,
This is a limitation of WicBitmapGeoCanvas, because the D2DBitmap doesn’t provide the method like MakeTransparent() in Bitmap.
Regards,
Edgar
Hi Edgar,
Thanks for the answer. Is there a workaround - or it is planned in the future to delete this limitation. The extension really enhanced the drawing speed.
Regards,
Torsten