# all components are set to zero v = vec3() (0.0000, 0.0000, 0.0000) # set all components to one value v = vec3(2.5) (2.5000, 2.5000, 2.5000) # set a 2d vector, the 3rd component will be zero v = vec3(1.5, 0.8) (1.5000, 0.8000, 0.0000) # initialize all three components v = vec3(1.5, 0.8, -0.5) (1.5000, 0.8000, -0.5000)Additionally you can use all of the above, but store the values inside a tuple, a list or a string:
v = vec3([1.5, 0.8, -0.5]) w = vec3("1.5, 0.8")Finally, you can initialize a vector with a copy of another vector:
v = vec3(w)
A vec3 can be used just like a list with 3 elements, so you can read and write components using the index operator or by accessing the components by name:
>>> v=vec3(1,2,3) >>> print v 1.0 >>> print v.y 2.0
vec3 = vec3 + vec3 vec3 = vec3 - vec3 float = vec3 * vec3 # dot product vec3 = float * vec3 vec3 = vec3 * float vec3 = vec3 / float vec3 = vec3 % float # each component vec3 = -vec3 float = vec3[i] # get or set elementAdditionally, you can compare vectors with ==, !=, <, <=, >, >=. Each comparison (except < and >) takes an epsilon environment into account, this means two values are considered to be equal if their absolute difference is less than or equal to a threshold value epsilon. You can read and write this threshold value using the functions getEpsilon() and setEpsilon().
Taking the absolute value of a vector will return the length of the vector:
float = abs(v) # this is equivalent to v.length()