Lines Matching defs:affine
1424 % ExpandAffine() computes the affine's expansion factor, i.e. the square root
1425 % of the factor by which the affine transform affects area. In an affine
1431 % double ExpandAffine(const AffineMatrix *affine)
1435 % o expansion: ExpandAffine returns the affine's expansion factor.
1437 % o affine: A pointer the affine transform of type AffineMatrix.
1440 MagickExport double ExpandAffine(const AffineMatrix *affine)
1442 assert(affine != (const AffineMatrix *) NULL);
1443 return(sqrt(fabs(affine->sx*affine->sy-affine->rx*affine->ry)));