class GraphingInterface(Core.Object):
enter_function = Core.InputEvent(KEYBOARD, PRESS, ord(' '))
def __init__(self):
Core.Object.__init__(self)
self.graph = StringFunctionGrapher()
self.prompt = Prompt()
self.flash = OnScreenMessage()
self.flash.position = (-310, 230)
self.flash.text_size = 25
self.flash.delay = 5.0
self.flash.color = (0, 0.2, 0.7)
self.prompt.position = (-310, 230)
self.prompt.text_size = 25
self.prompt.color = (0, 0.2, 0.7)
self.prompt.set_callback(self.update_function)
self.graph.position = (-320, 0)
self.graph.set(DRAW)
def input(self, evt):
if (evt == self.enter_function) and not self.prompt.active():
self.flash.hide()
self.prompt.ask("Function: ")
def update_function(self, new_func, context = None):
try:
self.graph.set_string_function(new_func)
except Exception as e:
self.flash.show("Invalid function '%s':\n%s" % (new_func, e))
else:
self.flash.show("Graphing\nf(x) = %s" % new_func)
def __init__(self):
Core.Object.__init__(self)
self.graph = StringFunctionGrapher()
self.prompt = Prompt()
self.flash = OnScreenMessage()
self.flash.position = (-310, 230)
self.flash.text_size = 25
self.flash.delay = 5.0
self.flash.color = (0, 0.2, 0.7)
self.prompt.position = (-310, 230)
self.prompt.text_size = 25
self.prompt.color = (0, 0.2, 0.7)
self.prompt.set_callback(self.update_function)
self.graph.position = (-320, 0)
self.graph.set(DRAW)