def add_iris_back(self):
blue_iris_back = AnnularSector(
inner_radius=self.pupil_radius,
outer_radius=self.outer_radius,
angle=270 * DEGREES,
start_angle=180 * DEGREES,
fill_color=self.iris_background_blue,
fill_opacity=1,
stroke_width=0,
)
brown_iris_back = AnnularSector(
inner_radius=self.pupil_radius,
outer_radius=self.outer_radius,
angle=90 * DEGREES,
start_angle=90 * DEGREES,
fill_color=self.iris_background_brown,
fill_opacity=1,
stroke_width=0,
)
self.iris_background = VGroup(
blue_iris_back,
brown_iris_back,
)
self.add(self.iris_background)
def new_sector(self, r, dr, lower_angle, upper_angle):
alpha = self.max_opacity * self.opacity_function(r)
annular_sector = AnnularSector(inner_radius=r,
outer_radius=r + dr,
color=self.color,
fill_opacity=alpha,
start_angle=lower_angle,
angle=upper_angle - lower_angle)
# rotate (not project) it into the viewing plane
rotation_matrix = z_to_vector(self.projection_direction())
annular_sector.apply_matrix(rotation_matrix)
# now rotate it inside that plane
rotated_RIGHT = np.dot(RIGHT, rotation_matrix.T)
projected_RIGHT = self.project(RIGHT)
omega = angle_between_vectors(rotated_RIGHT, projected_RIGHT)
annular_sector.rotate(omega, axis=self.projection_direction())
annular_sector.move_arc_center_to(self.get_source_point())
return annular_sector
def new_sector(self, r, dr, lower_angle, upper_angle):
alpha = self.max_opacity * self.opacity_function(r)
annular_sector = AnnularSector(
inner_radius=r,
outer_radius=r + dr,
color=self.color,
fill_opacity=alpha,
start_angle=lower_angle,
angle=upper_angle - lower_angle
)
# rotate (not project) it into the viewing plane
rotation_matrix = z_to_vector(self.projection_direction())
annular_sector.apply_matrix(rotation_matrix)
# now rotate it inside that plane
rotated_RIGHT = np.dot(RIGHT, rotation_matrix.T)
projected_RIGHT = self.project(RIGHT)
omega = angle_between_vectors(rotated_RIGHT, projected_RIGHT)
annular_sector.rotate(omega, axis=self.projection_direction())
annular_sector.move_arc_center_to(self.get_source_point())
return annular_sector
