private void UpdateOpenedBookTransform(float progress)
{
//scale
var openedProgress = 1 - progress;
var openedScale = MathUtility.Lerp(SelectedBookScale3D.X, 1, openedProgress);
var scaleMatrix = Matrix3D.CreateScale(openedScale);
//rotation
var openedBookQuaternion = Matrix3DHelper.Slerp(SelectedBookRotation3D, openedBookTargetQuaternion,
openedProgress, true);
var rotationM3D = Matrix3D.CreateFromQuaternion(openedBookQuaternion);
//translation
var openedX = MathUtility.Lerp(SelectedBookTranslation3D.X, OpenedBookRect.X + (float)Book.CoverWidth,
openedProgress);
var openedY = MathUtility.Lerp(SelectedBookTranslation3D.Y, OpenedBookRect.Y, openedProgress);
var translationMatrix = Matrix3D.CreateTranslation(openedX, openedY, 0);
OpenedBook.TransformMatrix3D = rotationM3D * scaleMatrix * translationMatrix;
}
