def scale_xy(self, scale_x, scale_y, caller=None):
"""
Scales the event to be in the scale specified.
A component calls event.scale_xy(scale) to scale the event into its own
coordinate frame when the ctm has been scaled. This operation is used
for zooming.
"""
# Note that the meaning of scale_x and scale_y for Enable
# is the inverted from the meaning for Kiva.affine.
# TODO: Fix this discrepancy.
self.push_transform(affine.affine_from_scale(1/scale_x, 1/scale_y))
if caller is not None:
self.dispatch_history.append(caller)
return
def scale_xy(self, scale_x, scale_y, caller=None):
"""
Scales the event to be in the scale specified.
A component calls event.scale_xy(scale) to scale the event into its own
coordinate frame when the ctm has been scaled. This operation is used
for zooming.
"""
# Note that the meaning of scale_x and scale_y for Enable
# is the inverted from the meaning for Kiva.affine.
# TODO: Fix this discrepancy.
self.push_transform(affine.affine_from_scale(1 / scale_x, 1 / scale_y))
if caller is not None:
self.dispatch_history.append(caller)
return
def test_from_scale(self):
transform = affine.affine_from_scale(5., 6.)
pt1 = array([1., 1., 1.])
actual = dot(pt1, transform)
desired = pt1 * array((5., 6., 1.))
assert (alltrue(actual == desired))
def test_from_scale(self):
transform = affine.affine_from_scale(5.,6.)
pt1 = array([1.,1.,1.])
actual = dot(pt1,transform)
desired = pt1*array((5.,6.,1.))
assert(alltrue( actual == desired ))
def test_from_scale(self):
transform = affine.affine_from_scale(5.0, 6.0)
pt1 = array([1.0, 1.0, 1.0])
actual = dot(pt1, transform)
desired = pt1 * array((5.0, 6.0, 1.0))
assert alltrue(actual == desired)