Re: [csswg-drafts] [css-transforms-2] Variable `dot` not defined in interpolation of decomposed 3d matrix (#911)

I checked that this agrees with the [relevant Chromium code](https://source.chromium.org/chromium/chromium/src/+/main:ui/gfx/geometry/quaternion.cc;l=71-96;drc=d383d0b3e4f76789a6de2a221c61d3531f4c59da).  That checking does require use of the [trigonometric identity](https://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities) for sin(⍺-β).

I'll fix this, and simplify away a "times 1" while I'm there.

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Received on Tuesday, 19 October 2021 17:51:46 UTC