/*!
\overload
Creates and returns a QPainterPath object that is a copy of the
given \a path, mapped into the coordinate system defined by this
matrix.
*/
QPainterPath QMatrix::map(const QPainterPath &path) const
{
if (path.isEmpty())
return QPainterPath();
QPainterPath copy = path;
// Translate or identity
if (_m11 == 1.0 && _m22 == 1.0 && _m12 == 0.0 && _m21 == 0.0) {
// Translate
if (_dx != 0.0 || _dy != 0.0) {
copy.detach();
for (int i=0; i<path.elementCount(); ++i) {
QPainterPath::Element &e = copy.d_ptr->elements[i];
e.x += _dx;
e.y += _dy;
}
}
// Full xform
} else {
copy.detach();
for (int i=0; i<path.elementCount(); ++i) {
QPainterPath::Element &e = copy.d_ptr->elements[i];
qreal fx = e.x, fy = e.y;
e.x = _m11*fx + _m21*fy + _dx;
e.y = _m12*fx + _m22*fy + _dy;
}
}
return copy;
}
