Implementation of vectors in python.
This is an implementation of 2D vectors in python. It has no dependencies except the math module which is included in python natively.
Simply copy the vector.py file into your project and import Vector2D from it.
vec1 = Vector2D(10, 5) #Creates a new vector with its head at (10, 5)
vec1 = Vector2D() #Creates a new vector with its head at (1, 0)
head = vec1() # Returns the head of the vector in a tuple(here, (10, 5))
x = vec1.x #Returns the x coordinate of the head of the vector(here, 10)
y = vec1.x #Returns the y coordinate of the head of the vector(here, 5)
angle = vec1.angle #Return the angle of the vector in the anti-clockwise direction with respect to the positive x axis
length = vec1.length #Returns the length of the vector, effectively, the distance of the head from the origin
vec1.x = 15 #Sets the x coordinate of the head to 15
vec1.y = 10 #Sets the y coordinate of the head to 10
vec1.length = 40 #Sets the length of a vector to 40 without rotating it
vec1.angle = 3.14 #Sets the angle of the vector to 3.14 without changing its length
vec1.x += 3 # Adds 3 to the x coordinate of the head of the vector
vec1.y += 3 # Adds 3 to the y coordinate of the head of the vector
vec1.length += 1 # Increases the length of the vector by 1
vec1.angle += 3.14 #Increases the angle of the vector by 3.14 radian, same as rotating it by 3.14 radian anticlockwise
vec1 += vec2 # Adds the second vector to the first one, works for subtraction as well
vec3 = vec1 - vec2 # Subtracts the two vectors and returns a new vector, works for addition as well
vec2 *= 5.7 # Multiplies the each component of a vector by 5.7, same as multiplying the length by 5.7
num = vec2 * vec3 # Dots the two vectors and returns a scalar
vec3 /= 10 # Divides each component of the vector by 10, same as dividing the length by 10