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Simpler move_lighthouse_to

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This commit is contained in:
Grant Sanderson
2018-02-27 22:39:50 -08:00
parent 59d81feb26
commit d7b84b0507
1 changed files with 6 additions and 14 deletions
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20
topics/light.py
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@ -187,11 +187,12 @@ class LightSource(VMobject):
self.update_shadow()
def update_lighthouse(self):
new_lh = Lighthouse()
new_lh.move_to(ORIGIN)
new_lh.apply_matrix(self.rotation_matrix())
new_lh.shift(self.get_source_point())
self.lighthouse.submobjects = new_lh.submobjects
self.lighthouse.move_to(self.get_source_point())
# new_lh = Lighthouse()
# new_lh.move_to(ORIGIN)
# new_lh.apply_matrix(self.rotation_matrix())
# new_lh.shift(self.get_source_point())
# self.lighthouse.submobjects = new_lh.submobjects
def update_ambient(self):
new_ambient_light = AmbientLight(
@ -416,7 +417,6 @@ class AmbientLight(VMobject):
class Spotlight(VMobject):
CONFIG = {
"source_point": VectorizedPoint(location = ORIGIN, stroke_width = 0, fill_opacity = 0),
"opacity_function" : lambda r : 1.0/(r/2+1.0)**2,
@ -445,13 +445,10 @@ class Spotlight(VMobject):
w = project_along_vector(point,v)
return w
def get_source_point(self):
return self.source_point.get_location()
def generate_points(self):
self.submobjects = []
self.add(self.source_point)
@ -467,7 +464,6 @@ class Spotlight(VMobject):
new_sector = self.new_sector(r,dr,lower_angle,upper_angle)
self.add(new_sector)
def new_sector(self,r,dr,lower_angle,upper_angle):
alpha = self.max_opacity * self.opacity_function(r)
annular_sector = AnnularSector(
@ -504,7 +500,6 @@ class Spotlight(VMobject):
else:
return -absolute_angle
def viewing_angles(self,screen):
screen_points = screen.get_anchors()
@ -531,7 +526,6 @@ class Spotlight(VMobject):
return lower_ray, upper_ray
def opening_angle(self):
l,u = self.viewing_angles(self.screen)
return u - l
@ -551,7 +545,6 @@ class Spotlight(VMobject):
self.update_sectors()
return self
def update_sectors(self):
if self.screen == None:
return
@ -567,7 +560,6 @@ class Spotlight(VMobject):
# submob.set_fill(opacity = 10 * self.opacity_function(submob.outer_radius))
Transform(submob, new_submob).update(1)
def dimming(self,new_alpha):
old_alpha = self.max_opacity
self.max_opacity = new_alpha