Imports github.com/oakmound/oak/v4/alg/floatgeom github.com/oakmound/oak/v4/dlog github.com/oakmound/oak/v4/event github.com/oakmound/oak/v4/mouse github.com/oakmound/oak/v4/render github.com/oakmound/oak/v4/scene Standard library imports bufio fmt image image/color image/draw math os path/filepath