Re: [NTG-context] Scale image in MetaPost, maintaining aspect ratio

On Sat, 7 Jul 2018 20:58:40 +0200 Marco Patzer wrote:

Hi!

How to scale an image in MetaPost, maintaining the aspect ratio (without specifying the height explicitly)?

Example:

\setupexternalfigures [location=default] \starttext \externalfigure [cow][width=5cm]

\startMPcode draw externalfigure "cow" scaled 5cm; \stopMPcode \stoptext

For "historic" reasons, draw externalfigure "cow" scaled 5cm ; normalizes the figure to a square. This will not be changed as it is a very old feature of MetaFun. The solution is draw rawtextext("\externalfigure[cow]") xsized 5cm ; where one can use xsized, ysized or xysized (taking a pair). Alan