(cpcolor, evalcolor, idx=0)
return color
Selects item color for plotting.

    :param cpcolor: color for control points grid item
    :type cpcolor: str, list, tuple
    :param evalcolor: color for evaluated points grid item
    :type evalcolor: str, list, tuple
    :param idx: index of the current geometry object
    :type idx: int
    :return: a list of color values
    :rtype: list
Selects item color for plotting.
Selects item color for plotting .
def select_color(cpcolor, evalcolor, idx=0):
    """ Selects item color for plotting.

    :param cpcolor: color for control points grid item
    :type cpcolor: str, list, tuple
    :param evalcolor: color for evaluated points grid item
    :type evalcolor: str, list, tuple
    :param idx: index of the current geometry object
    :type idx: int
    :return: a list of color values
    :rtype: list
    """
    # Random colors by default
    color = utilities.color_generator()

    # Constant color for control points grid
    if isinstance(cpcolor, str):
        color[0] = cpcolor

    # User-defined color for control points grid
    if isinstance(cpcolor, (list, tuple)):
        color[0] = cpcolor[idx]

    # Constant color for evaluated points grid
    if isinstance(evalcolor, str):
        color[1] = evalcolor

    # User-defined color for evaluated points grid
    if isinstance(evalcolor, (list, tuple)):
        color[1] = evalcolor[idx]

    return color
def select_color ( cpcolor , evalcolor , idx = 0 ) : # Random colors by default color = utilities . color_generator ( ) # Constant color for control points grid if isinstance ( cpcolor , str ) : color [ 0 ] = cpcolor # User-defined color for control points grid if isinstance ( cpcolor , ( list , tuple ) ) : color [ 0 ] = cpcolor [ idx ] # Constant color for evaluated points grid if isinstance ( evalcolor , str ) : color [ 1 ] = evalcolor # User-defined color for evaluated points grid if isinstance ( evalcolor , ( list , tuple ) ) : color [ 1 ] = evalcolor [ idx ] return color