Re: 回复： 回复： From China: About 2.5D transform
Jerónimo Barraco Mármol <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
im intrested in this too, but failed to achieve it... i think the only way is using the correct values as parameters when creating a matrix. Jerónimo Barraco Mármol http://nande.com.ar http://ar.linkedin.com/in/nande ________________________________ De: 唐博 <[email protected]> Para: Maarten Bosmans <[email protected]> CC: "[email protected]" <[email protected]> Enviado: martes, 11 de octubre de 2011 0:23 Asunto: [cairo] 回复： 回复： From China: About 2.5D transform Oh, it's the first time I send email to mailing list. I 'm not familiar with it, excuse me. ----- 原邮件 ---- 发件人： Maarten Bosmans <[email protected]> 收件人： 唐博 <[email protected]> [email protected] 发送日期： 2011年10月10日, 星期一, 上午 2:20 主题: Re: 回复： [cairo] From China: About 2.5D transform Note: Please keep the conversation on the mailing list. (use reply-to-all) Also inline answering instead of top posting is preferred. 2011/10/9 唐博 <[email protected]>: > Thank you very much！ > > I want to transform the image rotate as the Z axis. And achieve overlook effect .I don't know whether cairo support . This is indeed projective transform. I wouldn't call this 2.5D. A year ago I strarted of a discussion about this. http://lists.freedesktop.org/archives/cairo/2010-August/020458.html Please read through it and the patches I proposed. Perhaps you would like to put in some effort to bring projective transforms to Cairo, that would be much appreciated. Maarten > ----- 原邮件 ----- > 发件人： Maarten Bosmans <[email protected]> > 收件人： 唐博 <[email protected]> > 抄送： "[email protected]" <[email protected]> > 发送日期： 2011年10月9日, 星期日, 下午 6:49 > 主题: Re: [cairo] From China: About 2.5D transform > > 2011/10/9 唐博 <[email protected]>: >> Good afternoon: >> How can I use cairo lib achieve 2.5D effect ? > > Can you explain what you want to achieve in more detail? > With 2.5D I always understood having multiple flat layers stacked on > top of eachother. This is of course exactly what Cairo does. > >> I want to use affine transform, but I don't know how to set the matrix's param. > > http://cairographics.org/manual/cairo-Transformations.html > > If you want a perspective transform (which is not affine), then that's > currently not possible to do with Cairo. It is possible in pixman and > I proposed some patches to cairo to expose that functionality, but > those where met with complaints about the API. I haven't revisited > those. > > Maarten > 抄送： -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo