import mathutils # zero length vector vec = mathutils.Vector((0, 0, 1)) # unit length vector vec_a = vec.copy().normalize() vec_b = mathutils.Vector((0, 1, 2)) vec2d = mathutils.Vector((1, 2)) vec3d = mathutils.Vector((1, 0, 0)) vec4d = vec_a.to_4d() # other mathutuls types quat = mathutils.Quaternion() matrix = mathutils.Matrix() # Comparison operators can be done on Vector classes: # greater and less then test vector length. vec_a > vec_b vec_a >= vec_b vec_a < vec_b vec_a <= vec_b # ==, != test vector values e.g. 1,2,3 != 3,2,1 even if they are the same length vec_a == vec_b vec_a != vec_b # Math can be performed on Vector classes vec_a + vec_b vec_a - vec_b vec_a * vec_b vec_a * 10.0 vec_a * matrix vec_a * vec_b vec_a * quat -vec_a # You can access a vector object like a sequence x = vec_a[0] len(vec) vec_a[:] = vec_b vec2d[:] = vec3d[:2] # Vectors support 'swizzle' operations # See http://en.wikipedia.org/wiki/Swizzling_(computer_graphics) vec.xyz = vec.zyx vec.xy = vec4d.zw vec.xyz = vec4d.wzz vec4d.wxyz = vec.yxyx