Thanks! That makes sense. I'll go back to using "over()" again.
On Thu, Jan 14, 2021 at 7:30 AM Larry Gritz <[email protected]> wrote: > If I understand you correctly, this is the correct behavior. Paste (just > like pasting text over a selection in an editor) *replaces* what's there. > If you want to composite (using alpha to, in essence, select where the fg > goes and where the bg is preserved), then that's exactly what over() does. > Or am I misunderstand what you're Ofer? > > I think it's just unclear documentation. There is only one roi parameter: > srcroi. I kind of mis-wrote it C++ fingers, so it says > > ROI srcroi=ROI.All > > but that first "ROI" is a type, not another parameter. > > -- lg > > > On Jan 13, 2021, at 2:06 PM, Daniel Flehner Heen <[email protected]> > wrote: > > Hi! > > I'm attempting to slim down some code and want to use ImageBufAlgo.paste() > directly rather than ImageBufAlgo.over() to composite a logo with an alpha > channel over an image. Is that even possible? > I keep getting black where it should be transparent. I've made sure the > alpha channel is preserved in both the logo and the underlying image. > > According to the docs paste should apply all channels to the according > channels in the underlying image. I've tried providing a ROI without > success. > > A side question. In the docs > <https://openimageio.readthedocs.io/en/latest/pythonbindings.html?highlight=paste#image-transformations-and-data-movement> > for > ImageBufAlgo.paste there's both a ROI and srcroi argument listed, is that > correct or should it only be the srcroi? I suspect the latter. > > Thanks! > > -- > -Daniel > > > -- > Larry Gritz > [email protected] > > > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > -- -Daniel
_______________________________________________ Oiio-dev mailing list [email protected] http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
