A few fixes to initial point_thickness implementation

constants.py

@@ -1,9 +1,6 @@
 import os
 import numpy as np
 
-
-GENERALLY_BUFFER_POINTS = True
-
 PRODUCTION_QUALITY_DISPLAY_CONFIG = {
     "height"         : 1440,
     "width"          : 2560,
@@ -20,6 +17,8 @@ LOW_QUALITY_DISPLAY_CONFIG = {
 DEFAULT_POINT_DENSITY_2D = 25 
 DEFAULT_POINT_DENSITY_1D = 200
 
+DEFAULT_POINT_THICKNESS = 4
+
 #TODO, Make sure these are not needd
 DEFAULT_HEIGHT = PRODUCTION_QUALITY_DISPLAY_CONFIG["height"] 
 DEFAULT_WIDTH  = PRODUCTION_QUALITY_DISPLAY_CONFIG["width"]

displayer.py

@@ -55,7 +55,7 @@ def paint_mobjects(mobjects, image_array = None):
         points[:,1] = -1*points[:,1]*height/space_height/2 + height/2
         points, rgbs = add_thickness(
             points.astype('int'), rgbs, 
-            mobject.point_thickness, 
+            mobject.point_thickness,
             width, height
         )
 
@@ -69,11 +69,14 @@ def paint_mobjects(mobjects, image_array = None):
 def add_thickness(pixel_indices, rgbs, thickness, width, height):
     """
     Imagine dragging each pixel around like a paintbrush in
-    a square of pixels tickness x thickness big surrounding it
+    a plus-sign-shaped pixel arrangement surrounding it
     """
+    thickness = adjusted_thickness(thickness, width, height)
     original = np.array(pixel_indices)
     original_rgbs = np.array(rgbs)
     for nudge in range(-thickness/2+1, thickness/2+1):
+        if nudge == 0:
+            continue
         for x, y in [[nudge, 0], [0, nudge]]:
             pixel_indices = np.append(
                 pixel_indices, 
@@ -86,7 +89,12 @@ def add_thickness(pixel_indices, rgbs, thickness, width, height):
                   (pixel_indices[:,1] >= 0) & \
                   (pixel_indices[:,1] < height)
     return pixel_indices[admissibles], rgbs[admissibles]
-    
+
+def adjusted_thickness(thickness, width, height):
+    big_width = PRODUCTION_QUALITY_DISPLAY_CONFIG["width"]
+    big_height = PRODUCTION_QUALITY_DISPLAY_CONFIG["height"]
+    factor = (big_width + big_height) / (width + height)
+    return 1 + (thickness-1)/factor
 
 def place_on_screen(points, rgbs, space_width, space_height):
     """

mobject/mobject.py

@@ -21,7 +21,7 @@ class Mobject(object):
     #Number of numbers used to describe a point (3 for pos, 3 for normal vector)
     DEFAULT_CONFIG = {
         "color" : "white",
-        "point_thickness" : 4,
+        "point_thickness" : DEFAULT_POINT_THICKNESS,
         "name" : None,
     }
     DIM = 3
@@ -369,7 +369,7 @@ class Mobject2D(Mobject):
         "density" : DEFAULT_POINT_DENSITY_2D,
     }
     def __init__(self, **kwargs):
-        digest_config(self, Mobject1D, kwargs)
+        digest_config(self, Mobject2D, kwargs)
         self.epsilon = 1.0 / self.density
         Mobject.__init__(self, **kwargs)