plot_implicit.py 文件源码

def __init__(self, expr, var_start_end_x, var_start_end_y,
            has_equality, use_interval_math, depth, nb_of_points):
        super(ImplicitSeries, self).__init__()
        self.expr = sympify(expr)
        self.var_x = sympify(var_start_end_x[0])
        self.start_x = float(var_start_end_x[1])
        self.end_x = float(var_start_end_x[2])
        self.var_y = sympify(var_start_end_y[0])
        self.start_y = float(var_start_end_y[1])
        self.end_y = float(var_start_end_y[2])
        self.get_points = self.get_raster
        self.has_equality = has_equality  # If the expression has equality, i.e.
                                         #Eq, Greaterthan, LessThan.
        self.nb_of_points = nb_of_points
        self.use_interval_math = use_interval_math
        self.depth = 4 + depth