Graphics

Is it possible to set key frames in order to animate H spacing values in Scene Fonts? I'm trying to do an effect where letters kern out to reveal, and cannot achieve the desired result with a simple x-scale.

Have you tried a stagger animation? Not the same as Kerning but may get close to the effect you're trying to achieve.
#XPression

Yes you can, with scripting !

OnSceneOnline
[PHP]
Dim MaFont as xpfont
Engine.GetFontByName("Font1", MaFont)
MaFont.Spacing = -11.50 'Here adjust IN value
[/PHP]



OnRender
[PHP]
Dim MaFont as xpfont
Engine.GetFontByName("Font1", MaFont)
MaFont.Spacing = MaFont.Spacing + 0.15 'Here the speed of "grow"
[/PHP]



If you want to stop it a moment, add a condition like
[PHP]
If MaFont.Spacing < 20 Then
MaFont.Spacing = MaFont.Spacing + 0.15 'Here the speed of "grow"
End if
[/PHP]
#XPression

Terrific, thanks very much!
#XPression

A suggestion....

I've found the animatable items in Xpression to be quite limiting, but there is a trick you can use to achieve most goals - create a dummy group and you can keyframe animate one of it's fields (like the X Position), and use visual logic to tie that value to what you actually want animated (like a color).

Now, that's not possible with Fonts, because the only thing accessible (I'm using 6.7) are font materials, and not the font itself, so you can use code similar to what vinz posted to tie the two together yourself - and then you can keyframe animate it as you wish.

dim font as XpFont
dim dummyObj as XpBaseObject

if Engine.GetFontByName("Font1", font) then
if Self.GetObjectByName("Group1", dummyObj) then
font.Spacing = dummyObj.PosX
end if
end if


EDIT: To clarify, that code would be OnRender.
#XPression