Hi Christine,
continuing..
Christina Roßmanith schrieb:
Hi,
just to be sure before I continue my work:
SVG gradient with angle=0° changes color from left to right
(I'm taking this from
http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement)
ODF gradient with angle=0° changes color from top to bottom
(I can't find any meaning of the angle attribute here
http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#__RefHeading__1416460_253892949)
I have now looked, which way PowerPoint2013 does it:
The angle of 0° in the UI means that the gradient vector goes from left
to right.
The angle in the UI rotates this gradient vector clockwise on screen.
Values from 0 to 359.9 are allowed.
In file format it is the same as from LO, for example:
draw:angle="700" results from
PP UI-angle=20° clockwise on screen
LO UI-angle=70° counterclockwise on screen
draw:angle="3300" results form
PP UI-angle=120° clockwise on screen
LO UI-angle=330° counterclockwise on screen
So it seems, that PP follows the way how it is stored in file, but has a
different UI.
My conclusion is, that a mail to OASIS is needed with the points:
(1) Define "axis at which the gradient values are interpolated" as vector
(2) Define untransformed direction of this vector as going in positive
y-axis direction.
(3) Define direction of rotation as clockwise in respect to the internal
coordinate system
(4) Do not define draw:angle as SVG-angle but as double to be multiplied
with 0.1°.
What do you think?
Kind regards
Regina
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