As architects we are rightly enamoured of geometry – the circle, the square, the diamond, the octagonal plan – but regular forms can bring their own problems. At this house, the possible tyranny of the perfect semi-circle is neatly subverted by the casualness of the spaces created under the sheltering roof. As with a series of timber tents, movement between the bedrooms, bathrooms and living areas involves using the exterior deck. Deliberately turning sideways to the view, the house wraps…