quadrilateralareascoordinates.py

quadrilateralareascoordinates.py

def calculate_area(c):

    '''
    Calculates the area of any quadrivaletral
    from a list of x,y coordinates in the following format:

    [[x1,y1],[x2,y2],[x3,y3],[x4,y4]]
    '''

    first = c[0][0]*c[1][1] + c[1][0]*c[2][1] + c[2][0]*c[3][1] + c[3][0]*c[0][1]

    second = c[1][0]*c[0][1] + c[2][0]*c[1][1] + c[3][0]*c[2][1] + c[0][0]*c[3][1]

    area = 0.5*(first - second)

    return area