def get_vector_label(self,
vector,
label,
at_tip=False,
direction="left",
rotate=False,
color=None,
label_scale_factor=VECTOR_LABEL_SCALE_FACTOR):
if not isinstance(label, TexMobject):
if len(label) == 1:
label = "\\vec{\\textbf{%s}}" % label
label = TexMobject(label)
if color is None:
color = vector.get_color()
label.set_color(color)
label.scale(label_scale_factor)
label.add_background_rectangle()
if at_tip:
vect = vector.get_vector()
vect /= get_norm(vect)
label.next_to(vector.get_end(), vect, buff=SMALL_BUFF)
else:
angle = vector.get_angle()
if not rotate:
label.rotate(-angle, about_point=ORIGIN)
if direction == "left":
label.shift(-label.get_bottom() + 0.1 * UP)
else:
label.shift(-label.get_top() + 0.1 * DOWN)
label.rotate(angle, about_point=ORIGIN)
label.shift((vector.get_end() - vector.get_start()) / 2)
return label
def get_tex(self,
tex,
scale=1,
buff=1,
invert_dir=False,
invert_texto=False,
remove_rot=True,
**moreargs):
linea_referencia = Line(self[0][0].get_start(), self[0][-1].get_end())
texto = TexMobject(tex, **moreargs)
ancho = texto.get_height() / 2
if invert_texto:
inv = PI
else:
inv = 0
if remove_rot:
texto.scale(scale).move_to(self)
else:
texto.rotate(
linea_referencia.get_angle()).scale(scale).move_to(self)
texto.rotate(inv)
if invert_dir:
inv = -1
else:
inv = 1
texto.shift(self.direccion * (buff + 1) * ancho)
return texto
def get_vector_label(self, vector, label,
at_tip=False,
direction="left",
rotate=False,
color=None,
label_scale_factor=VECTOR_LABEL_SCALE_FACTOR):
if not isinstance(label, TexMobject):
if len(label) == 1:
label = "\\vec{\\textbf{%s}}" % label
label = TexMobject(label)
if color is None:
color = vector.get_color()
label.set_color(color)
label.scale(label_scale_factor)
label.add_background_rectangle()
if at_tip:
vect = vector.get_vector()
vect /= get_norm(vect)
label.next_to(vector.get_end(), vect, buff=SMALL_BUFF)
else:
angle = vector.get_angle()
if not rotate:
label.rotate(-angle, about_point=ORIGIN)
if direction == "left":
label.shift(-label.get_bottom() + 0.1 * UP)
else:
label.shift(-label.get_top() + 0.1 * DOWN)
label.rotate(angle, about_point=ORIGIN)
label.shift((vector.get_end() - vector.get_start()) / 2)
return label
def add_tex(self, text, scale=1, buff=-1, **moreargs):
linea_referencia = Line(self[0][0].get_start(), self[0][-1].get_end())
texto = TexMobject(text, **moreargs)
ancho = texto.get_height() / 2
texto.rotate(linea_referencia.get_angle()).scale(scale).move_to(self)
texto.shift(self.direccion * (buff + 1) * ancho)
return self.add(texto)
def get_vector_label(self,
vector,
label,
at_tip=False,
direction="left",
rotate=False,
color=None,
label_scale_factor=VECTOR_LABEL_SCALE_FACTOR):
"""
Returns naming labels for the passed vector.
Parameters
----------
vector
Vector Object for which to get the label.
at_tip (bool)
Whether or not to place the label at the tip of the vector.
direction (str="left")
If the label should be on the "left" or right of the vector.
rotate (bool=False)
Whether or not to rotate it to align it with the vector.
color (str)
The color to give the label.
label_scale_factor (Union[int,float])
How much to scale the label by.
Returns
-------
TexMobject
The TexMobject of the label.
"""
if not isinstance(label, TexMobject):
if len(label) == 1:
label = "\\vec{\\textbf{%s}}" % label
label = TexMobject(label)
if color is None:
color = vector.get_color()
label.set_color(color)
label.scale(label_scale_factor)
label.add_background_rectangle()
if at_tip:
vect = vector.get_vector()
vect /= get_norm(vect)
label.next_to(vector.get_end(), vect, buff=SMALL_BUFF)
else:
angle = vector.get_angle()
if not rotate:
label.rotate(-angle, about_point=ORIGIN)
if direction == "left":
label.shift(-label.get_bottom() + 0.1 * UP)
else:
label.shift(-label.get_top() + 0.1 * DOWN)
label.rotate(angle, about_point=ORIGIN)
label.shift((vector.get_end() - vector.get_start()) / 2)
return label
