[] readme course preface 1 2 3 4 5 6 7 reference examples resources

PROTO lights [ exposedField SFFloat intensity 1 exposedField SFColor color 111 ]{ DirectionalLight { direction 0 0 -1 color IS color intensity IS intensity } DirectionalLight { direction 0 0 1 color IS color intensity IS intensity } DirectionalLight { direction 1 0 0 color IS color intensity IS intensity } DirectionalLight { direction -1 0 0 color IS color intensity IS intensity } DirectionalLight { direction 0 1 0 color IS color intensity IS intensity } DirectionalLight { direction 0 -1 0 color IS color intensity IS intensity } }