visioncpp.util

Utility functions for Python VisionCpp interface.

visioncpp.util.call_if_attribute(obj, attr, *args, **kwargs)

Call object method, if it exists.

Arguments:

obj (object): The object. attr (str): The name of the object method. *args (optional): Arguments for method. **kwargs (optional): Keyword arguments for method.

Returns:

Return value of calling method, or None if object does not have method.

visioncpp.util.foreach(func, iterable)

Call function for each element of an iterable. Basically, it’s a list comprehension without a return value.

Arguments:

func (function): Function to call. iterable (iterable): Sequence of items.

visioncpp.util.get_attribute(obj, attr)

Return object attribute value, if it exists.

Arguments:

obj (object): The object. attr (str): The name of the object attribute.

visioncpp.util.get_image_size(fname)

Return the size of an image, in pixels.

Arguments:

fname (str): Path to image, either png, gif, or jpeg type.

Returns:

(int, int): The dimensions of the image, width x height.