Setaspect

setaspect <viewingrange> <yxaspect>

is used to set the field of view in both dimensions in the original BUILD and Polymost renderers.

<viewingrange> specifies the field of view as the tangent of the horizontal viewing angular radius, scaled by 16 bits (i.e. multiplied by 65536). The default value is 65536, corresponding to a FOV of 90 degrees.

<yxaspect> is the Y to X ratio scaled by 16 bits. In the editor, its default value is (65536*ydim*8)/(xdim*5). Note that <yxaspect> also affects rotatesprite.