As far as I understand the code if I want a resizable to preserve its aspect ratio I have to specify o.aspectRatio = true .

If I want to force a specific aspectRatio I have to additionaly specify the option e.g. o.ratio = 0.5 .

I think one option would be enough and suggest the following behaviour:

• o.aspectRatio = false -> Aspect ratio is not preserved
• o.aspectRatio = true -> On the first resize the aspect ratio is calculated from the element's dimensions and stored internally. I would not recommend recalculating the aspect ratio on every resize since this will lead to rounding errors after some resizes.
• o.aspectRatio = float -> If a floating point number is given that aspect ratio is forced upon the first resize.

To summarize I think there should not be an additional o.ratio-option but the o.aspectRatio option should be used to control everything concerning the aspectRatio-preservation.