- From: Chris Rebert via GitHub <sysbot+gh@w3.org>
- Date: Tue, 26 Sep 2023 20:22:21 +0000
- To: public-css-archive@w3.org
cvrebert has just created a new issue for https://github.com/w3c/csswg-drafts: == [css-transforms-1][css-transforms] 3D considerations & module levels == https://drafts.csswg.org/css-transforms/#interpolation-of-transform-functions > # CSS Transforms Module Level 1 > ## 10. Interpolation of primitives and derived transform functions > [...] > If both transform functions share a primitive in the two-dimensional space, both transform functions get converted to the two-dimensional primitive. If one or both transform functions are three-dimensional transform functions, the common three-dimensional primitive is used. > > In this example a two-dimensional transform function gets animated to a three-dimensional transform function. The common primitive is [`translate3d()`](https://drafts.csswg.org/css-transforms-2/#funcdef-translate3d). > > EXAMPLE 15 > [...] > First `translateX(100px)` gets converted to `translate3d(100px, 0, 0)` and `translateZ(100px)` to `translate3d(0, 0, 100px)` respectively. Then both converted transform functions get interpolated numerically. ---- https://drafts.csswg.org/css-transforms/#WD20171130 > ## Changes Since the 30 November 2017 Working Draft > [...] > * Remove any reference of 3D transformations of transform function definitions. ---- A. Given the aforementioned changelog bullet, it seems incongruous that this section of the spec is mentioning 3D at all. I note that the only functions which Level 1 defines are 2D transform functions (https://drafts.csswg.org/css-transforms/#two-d-transform-functions ). B. I am not intimately familiar with the CSSWG/W3C policy on the admissibility of references between spec levels, but it seems odd that Level 1 is explicitly referencing and hyperlinking to the Level 2-only [`translate3d`](https://drafts.csswg.org/css-transforms-2/#funcdef-translate3d) function in the above-quoted section. C. In the event that A & B aren't problematic, then for the sake of consistency and clarity, [`translateZ`](https://drafts.csswg.org/css-transforms-2/#funcdef-translatez), which is likewise from Level 2 but mentioned in the quoted section of Level 1, should be properly hyperlinked/referenced. Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/9415 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 26 September 2023 20:22:23 UTC