Hi Brett, On Tue, Mar 04, 2003 at 12:55:25PM -0500, Brett Viren wrote: > Hi, > > Two issues regarding transparent fill style, in particular with a > semi-transparent TPad placed over a histogram. > > 1) If I set the TPad's FillStyle to semi-transparent (4090) as well as > it's FillColor (to 3) the TPad is indeed semi-transparent but doesn't > reflect the color choice. Is transparency and fill color mutally > exclusive? > Currently they are indeed mutual exclusive. Should be enhanced. > > 2) When printing to a PS file the levels of transparency are not > adhered to. The TPad shows up fully transparent even if set to be > semi-transparent. Is this some failing with the PS format? > Transparency is not implemented for PS. For the display it is implemented by copying the lower level pad pixmaps into the transparent pad and increasing the pixel values depending on the transparency percentage. This algorithm should also be applied in PS, but is not. Cheers, Fons. -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
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