Package: cairo
Function cairo:matrix-transform-distance
Lambda Listcairo:matrix-transform-distance (matrix dx dy) SyntaxArgumentsDetails Transforms the distance vector (dx,dy) by matrix. This is similar to the cairo:matrix-transform-point function except that
the translation components of the transformation are ignored. The calculation
of the returned vector is as follows: tdx = dx * a + dy * c tdy = dx * b + dy * dAffine transformations are position invariant, so the same vector always transforms to the same vector. If (x1,y1) transforms to (x2,y2) then (x1+dx1,y1+dy1) will transform to (x1+dx2,y1+dy2) for all values of x1 and x2. | See also |
2025-1-18