Pivots in keyframes

[felipemanga]

Hello,
I'm not sure if this lib's still being maintained, but it is of use to me and might be to others, so I'd like to document this here.
I had some trouble with one of my animations, and the following seams to fix it:

in unmapFromParent, I added to the "s" object (after line 114):
pivot_x : pos.pivot_x,
pivot_y : pos.pivot_y,

in the tween function (line 137), do not default to 0:
pivot_x : lerp( ao.pivot_x, bo.pivot_x, t),
pivot_y : lerp( ao.pivot_y, bo.pivot_y, t),

Now, your draw callback can do the following:
if( !isNaN(obj.pivot_x) ) sprite.anchor.x = obj.pivot_x;
else sprite.anchor.x = file.pivot_x;
if( !isNaN(obj.pivot_y ) ) sprite.anchor.y = obj.pivot_y;
else sprite.anchor.y = file.pivot_y;

[deangiberson]

Thanks Felipe, I'm not maintaining this any more the Spriter team has developed a much more complete JS runtime. I'll take a look a this change next week, unless you have a pull request available.

[felipemanga]

The official implementation has a bigger footprint compared to yours (requires goog.js, totalling 177KB vs just 8KB for this), and I got this working much more quickly.
When all I need is to play back some simple animations, this is a much nicer solution.