493 BAffineTransform::IsValid(double epsilon) const  in IsValid()
495 	return fabs(sx) > epsilon && fabs(sy) > epsilon;  in IsValid()
500 IsEqualEpsilon(double v1, double v2, double epsilon)  in IsEqualEpsilon()  argument
502     return fabs(v1 - v2) <= double(epsilon);  in IsEqualEpsilon()
507 BAffineTransform::IsIdentity(double epsilon) const  in IsIdentity()
509 	return IsEqualEpsilon(sx, 1.0, epsilon)  in IsIdentity()
510 		&& IsEqualEpsilon(shy, 0.0, epsilon)  in IsIdentity()
511 		&& IsEqualEpsilon(shx, 0.0, epsilon)  in IsIdentity()
512 		&& IsEqualEpsilon(sy, 1.0, epsilon)  in IsIdentity()
513 		&& IsEqualEpsilon(tx, 0.0, epsilon)  in IsIdentity()
514 		&& IsEqualEpsilon(ty, 0.0, epsilon);  in IsIdentity()
519 BAffineTransform::IsDilation(double epsilon) const  in IsDilation()
521 	return IsEqualEpsilon(shy, 0.0, epsilon)  in IsDilation()
522 		&& IsEqualEpsilon(shx, 0.0, epsilon);  in IsDilation()
527 BAffineTransform::IsEqual(const BAffineTransform& other, double epsilon) const  in IsEqual()
529 	return IsEqualEpsilon(sx, other.sx, epsilon)  in IsEqual()
530 		&& IsEqualEpsilon(shy, other.shy, epsilon)  in IsEqual()
531 		&& IsEqualEpsilon(shx, other.shx, epsilon)  in IsEqual()
532 		&& IsEqualEpsilon(sy, other.sy, epsilon)  in IsEqual()
533 		&& IsEqualEpsilon(tx, other.tx, epsilon)  in IsEqual()
534 		&& IsEqualEpsilon(ty, other.ty, epsilon);  in IsEqual()