Transforms a distance by the rotation and scale of the inverse of a given transform.
graphics-ports
untransform-distance transform dx dy => x, y
transform⇩ |
A transform. |
dx⇩ |
A real number. |
dy⇩ |
A real number. |
x |
A real number. |
y |
A real number. |
The function untransform-distance
transforms the distance (dx dy) by the rotation and scale of the effective inverse of transform. The translation in the inverse transform is ignored. The transformed distance is returned as two values.
See graphics-state for details of how a transform is used.
CAPI User Guide and Reference Manual (Windows version) - 01 Dec 2021 19:34:15