C++ (Cpp) BAffineTransform::ShearBy Examples

Example #1

File: draw.cpp Project: Geekbruce/libui

void uiDrawMatrixSkew(uiDrawMatrix *m, double x, double y, double xamount, double yamount)
{
	BAffineTransform a;

	m2a(m, &a);
	// TODO degrees or radians?
	a.ShearBy(BPoint(x, y), BPoint(xamount, yamount));
	a2m(&a, m);
}

Example #2

File: AffineTransform.cpp Project: jessicah/haiku-private

const BAffineTransform&
BAffineTransform::SetScale(double x, double y)
{
    double tx;
    double ty;
    double rotation;
    double shearX;
    double shearY;
    if (!GetAffineParameters(&tx, &ty, &rotation, NULL, NULL,
                             &shearX, &shearY)) {
        return *this;
    }

    BAffineTransform result;
    result.ShearBy(shearX, shearY);
    result.ScaleBy(x, y);
    result.RotateBy(rotation);
    result.TranslateBy(tx, ty);

    return *this = result;
}