def touch_to_pattern(self, touch):
""" Find the related pattern from the touch and return it
:param touch: Kivy touch event with fiducial
Touch with pattern fiducial
>>> import mock
>>> thing = type("Thing", (TUIODragDropMixin, Widget), {})()
>>> thing.touch_to_pattern(mock.Mock(fid=2, angle=0))
array([[ True, False],
[ True, True]], dtype=bool)
>>> thing.touch_to_pattern(mock.Mock(fid=2, angle=3))
array([[ True, True],
[False, True]], dtype=bool)
Touch with non-pattern fiducial
>>> event = mock.Mock(fid=101)
>>> event.__repr__ = lambda *a: "Mock event"
>>> thing.touch_to_pattern(event)
Traceback (most recent call last):
UnknownFiducialError: Mock event
"""
fid_type, pattern = FIDUCIALS.get(touch.fid, (None, None))
if fid_type != Types.PATTERN:
raise UnknownFiducialError(touch)
pattern = np.array(pattern)
# Use the (radian) angle to find out optimum rotation. This uses the
# index of self.rotation_array, eg. array[2] == np.pi (180deg); to
# rotate 180deg, rot90 needs to be called with argument 2.
rotations = np.abs(self.rotation_array - touch.angle).argmin()
return np.rot90(pattern, rotations)
def touch_to_pattern(self, touch):
""" Find the related pattern from the touch and return it
:param touch: Kivy touch event with fiducial
Touch with pattern fiducial
>>> import mock
>>> thing = type("Thing", (TUIODragDropMixin, Widget), {})()
>>> thing.touch_to_pattern(mock.Mock(fid=2, angle=0))
array([[ True, False],
[ True, True]], dtype=bool)
>>> thing.touch_to_pattern(mock.Mock(fid=2, angle=3))
array([[ True, True],
[False, True]], dtype=bool)
Touch with non-pattern fiducial
>>> event = mock.Mock(fid=101)
>>> event.__repr__ = lambda *a: "Mock event"
>>> thing.touch_to_pattern(event)
Traceback (most recent call last):
UnknownFiducialError: Mock event
"""
fid_type, pattern = FIDUCIALS.get(touch.fid, (None, None))
if fid_type != Types.PATTERN:
raise UnknownFiducialError(touch)
pattern = np.array(pattern)
# Use the (radian) angle to find out optimum rotation. This uses the
# index of self.rotation_array, eg. array[2] == np.pi (180deg); to
# rotate 180deg, rot90 needs to be called with argument 2.
rotations = np.abs(self.rotation_array - touch.angle).argmin()
return np.rot90(pattern, rotations)
def on_touch_down(self, touch):
""" TUIO touch down event
No fiducial
>>> import mock
>>> logging.root._log = mock.Mock()
>>> thing = type("Thing", (TUIODragDropMixin, Widget), {"cell_coordinates": lambda s, a: a})()
>>> thing.on_touch_down(object())
Event fiducial
>>> events.CustomEvent.dispatch = mock.Mock()
>>> thing.on_touch_down(mock.Mock(fid=101, pos=(0, 0), angle=0))
False
>>> events.ConfirmEventWhite.dispatch.call_count
1
Pattern fiducial
>>> thing.on_touch_down(mock.Mock(id=100, fid=2, pos=(0, 0), angle=0))
>>> thing.pattern_locations
{100: (0, 0, 2, 2)}
Unknown fiducial
>>> thing.on_touch_down(mock.Mock(fid=234, pos=(0, 0), angle=0))
False
>>> logging.root._log.call_count
1
>>> logging.root._log.call_args
call(30, 'Unrecognised fiducial 234 on down', ())
"""
# Fire custom events
fid_type, data = FIDUCIALS.get(touch.fid, (None, None))
if fid_type == Types.EVENT_DISPATCHER:
Event = getattr(events, data)
Event(touch).dispatch(self)
return False
# Set pattern location data
try:
pattern = self.touch_to_pattern(touch)
except UnknownFiducialError:
logging.warning("Unrecognised fiducial {} on down".format(
touch.fid))
return False
if self.collide_point(*touch.pos):
self.pattern_locations[touch.id] = \
self.cell_coordinates(touch.pos) + pattern.shape
else:
self.pattern_locations[touch.id] = (None, None, None, None)
def on_touch_down(self, touch):
""" TUIO touch down event
No fiducial
>>> import mock
>>> logging.root._log = mock.Mock()
>>> thing = type("Thing", (TUIODragDropMixin, Widget), {"cell_coordinates": lambda s, a: a})()
>>> thing.on_touch_down(object())
Event fiducial
>>> events.CustomEvent.dispatch = mock.Mock()
>>> thing.on_touch_down(mock.Mock(fid=101, pos=(0, 0), angle=0))
False
>>> events.ConfirmEventWhite.dispatch.call_count
1
Pattern fiducial
>>> thing.on_touch_down(mock.Mock(id=100, fid=2, pos=(0, 0), angle=0))
>>> thing.pattern_locations
{100: (0, 0, 2, 2)}
Unknown fiducial
>>> thing.on_touch_down(mock.Mock(fid=234, pos=(0, 0), angle=0))
False
>>> logging.root._log.call_count
1
>>> logging.root._log.call_args
call(30, 'Unrecognised fiducial 234 on down', ())
"""
# Fire custom events
fid_type, data = FIDUCIALS.get(touch.fid, (None, None))
if fid_type == Types.EVENT_DISPATCHER:
Event = getattr(events, data)
Event(touch).dispatch(self)
return False
# Set pattern location data
try:
pattern = self.touch_to_pattern(touch)
except UnknownFiducialError:
logging.warning("Unrecognised fiducial {} on down".format(touch.fid))
return False
if self.collide_point(*touch.pos):
self.pattern_locations[touch.id] = \
self.cell_coordinates(touch.pos) + pattern.shape
else:
self.pattern_locations[touch.id] = (None, None, None, None)
