def apply_angle_scale_trans(self, angle, scale, trans, point=Vector(0, 0)):
'''Update matrix transformation by adding new angle, scale and translate.
:Parameters:
`angle` : float
Rotation angle to add
`scale` : float
Scaling value to add
`trans` : Vector
Vector translation to add
`point` : Vector, default to (0, 0)
Point to apply transformation
'''
old_scale = self.scale
new_scale = old_scale * scale
if new_scale < self.scale_min or old_scale > self.scale_max:
scale = 1
t = translation_matrix((trans[0]*self._do_translation_x, trans[1]*self._do_translation_y, 0))
t = matrix_multiply(t, translation_matrix( (point[0], point[1], 0)))
t = matrix_multiply(t, rotation_matrix(angle, (0, 0, 1)))
t = matrix_multiply(t, scale_matrix(scale))
t = matrix_multiply(t, translation_matrix((-point[0], -point[1], 0)))
self.apply_transform(t)
self.dispatch_event('on_transform', None)
def apply_angle_scale_trans(self, angle, scale, trans, point=Vector(0, 0)):
'''Update matrix transformation by adding new angle, scale and translate.
:Parameters:
`angle` : float
Rotation angle to add
`scale` : float
Scaling value to add
`trans` : Vector
Vector translation to add
`point` : Vector, default to (0, 0)
Point to apply transformation
'''
old_scale = self.scale
new_scale = old_scale * scale
if new_scale < self.scale_min or old_scale > self.scale_max:
scale = 1
t = translation_matrix((trans[0] * self._do_translation_x,
trans[1] * self._do_translation_y, 0))
t = matrix_multiply(t, translation_matrix((point[0], point[1], 0)))
t = matrix_multiply(t, rotation_matrix(angle, (0, 0, 1)))
t = matrix_multiply(t, scale_matrix(scale))
t = matrix_multiply(t, translation_matrix((-point[0], -point[1], 0)))
self.apply_transform(t)
self.dispatch_event('on_transform', None)
def apply_transform(self, trans, post_multiply=False, anchor=(0, 0)):
'''
Transforms scatter by trans (on top of its current transformation state)
:Parameters:
`trans`: transformation matrix from transformation lib.
Transformation to be applied to the scatter widget
`anchor`: tuple, default to (0, 0)
The point to use as the origin of the transformation
(uses local widget space)
`post_multiply`: bool, default to False
If true the transform matrix is post multiplied
(as if applied before the current transform)
'''
t = translation_matrix((anchor[0], anchor[1], 0))
t = matrix_multiply(t, trans)
t = matrix_multiply(t, translation_matrix((-anchor[0], -anchor[1], 0)))
if post_multiply:
self.transform = matrix_multiply(self._transform, t)
else:
self.transform = matrix_multiply(t, self._transform)
def apply_transform(self, trans, post_multiply=False, anchor=(0, 0)):
'''
Transforms scatter by trans (on top of its current transformation state)
:Parameters:
`trans`: transformation matrix from transformation lib.
Transformation to be applied to the scatter widget
`anchor`: tuple, default to (0, 0)
The point to use as the origin of the transformation
(uses local widget space)
`post_multiply`: bool, default to False
If true the transform matrix is post multiplied
(as if applied before the current transform)
'''
t = translation_matrix( (anchor[0], anchor[1], 0) )
t = matrix_multiply(t, trans)
t = matrix_multiply(t, translation_matrix( (-anchor[0], -anchor[1], 0) ))
if post_multiply:
self.transform = matrix_multiply(self._transform, t)
else:
self.transform = matrix_multiply(t, self._transform)
def to_local(self, x, y, **k):
p = matrix_multiply(self._transform_inv, (x, y, 0, 1))
return (p[0], p[1])
def to_parent(self, x, y, **k):
p = matrix_multiply(self._transform, (x, y, 0, 1))
return (p[0], p[1])
def to_local(self, x, y, **k):
p = matrix_multiply(self._transform_inv, (x, y, 0, 1))
return (p[0], p[1])
def to_parent(self, x, y, **k):
p = matrix_multiply(self._transform, (x, y, 0, 1))
return (p[0], p[1])