pylint controlstest.py

site-packages/visual/examples/controlstest.py

@@ -1,51 +1,62 @@
-from visual import *
-from visual.controls import *
-
-#############################################################################
-# See the example program widgets.py for an alternative to visual.controls  #
-#############################################################################
-
+#!/usr/bin/env python
+#coding:utf-8
+""" Visual Controls Example.
+See the example program widgets.py for an alternative to visual.controls
+"""
+
+from __future__ import print_function, division
+#from visual import *
+import visual as vp
+#from visual.controls import *
+import visual.controls as ctrls
+import math
 # Create "call-back" routines, routines that are called by the interact
 # machinery when certain mouse events happen:
 
-def setdir(direction): # called on button up events
-    cube.dir = direction
+def setdir(direction): #
+    """ called on button up events."""
+    CUBE.dir = direction
 
-def togglecubecolor(): # called on toggle switch flips
-    if t1.value:
-        cube.color = color.cyan
+def togglecubecolor():
+    """called on toggle switch flips"""
+    if T1.value:
+        CUBE.color = vp.color.cyan
     else:
-        cube.color = color.red
+        CUBE.color = vp.color.red
 
-def cubecolor(value): # called on a menu choice
-    cube.color = value
-    if cube.color == color.red:
-        t1.value = 0 # make toggle switch setting consistent with menu choice
+def cubecolor(value):
+    """ called on a menu choice"""
+    CUBE.color = value
+    if CUBE.color == vp.color.red:
+        T1.value = 0 # make toggle switch setting consistent with menu choice
     else:
-        t1.value = 1
-
-def setrate(obj): # called on slider drag events
+        T1.value = 1
+
+def setrate(obj):
+    """ called on slider drag events"""
     cuberate(obj.value) # value is min-max slider position
-    if obj is s1:
-        s2.value = s1.value # demonstrate coupling of the two sliders
+    if obj is S1:
+        S2.value = S1.value # demonstrate coupling of the two sliders
     else:
-        s1.value = s2.value
+        S1.value = S2.value
 
 def cuberate(value):
-    cube.dtheta = 2*value*pi/1e4
+    """ Get a rate for the cube."""
+    CUBE.dtheta = 2*value* math.pi/1e4
 
-w = 350
-display(x=w, y=0, width=w, height=w, range=1.5, forward=-vector(0,1,1))
-cube = box(color=color.red)
+WDT = 350
+vp.display(x=WDT, y=0, width=WDT, height=WDT, range=1.5, forward=-vp.vector(0, 1, 1))
+CUBE = vp.box(color=vp.color.red)
 
 # In establishing the controls window, range=60 means what it usually means:
 # (0,0) is in the center of the window, and (60,60) is the lower right corner.
 # If range is not specified, the default is 100.
-c = controls(x=0, y=0, width=w, height=w, range=60)
+C = ctrls.controls(x=0, y=0, width=WDT, height=WDT, range=60)
 
 # Buttons have a "text" attribute (the button label) which can be read and set.
 # Toggles have "text0" and "text1" attributes which can be read and set.
-# Toggles and sliders have a "value" attribute (0/1, or location of indicator) which can be read and set.
+# Toggles and sliders have a "value" attribute (0/1, or location of indicator)
+# which can be read and set.
 
 # The pos attribute for buttons, toggles, and menus is the center of the control (like "box").
 # The pos attribute for sliders is at one end, and axis points to the other end (like "cylinder").
@@ -58,25 +69,26 @@ def cuberate(value):
 # is to be taken. This scheme ensures that the execution of the function takes place
 # in the appropriate namespace context in the case of importing the controls module.
 
-bl = button(pos=(-30,30), height=30, width=40, text='Left', action=lambda: setdir(-1))
-br = button(pos=(30,30), height=30, width=40, text='Right', action=lambda: setdir(1))
-s1 = slider(pos=(-15,-40), width=7, length=70, axis=(1,0.7,0), action=lambda: setrate(s1))
-s2 = slider(pos=(-30,-50), width=7, length=50, axis=(0,1,0), action=lambda: setrate(s2))
-t1 = toggle(pos=(40,-30), width=10, height=10, text0='Red', text1='Cyan', action=lambda: togglecubecolor())
-m1 = menu(pos=(0,0,0), height=7, width=25, text='Options')
+BL = ctrls.button(pos=(-30, 30), height=30, width=40, text='Left', action=lambda: setdir(-1))
+BR = ctrls.button(pos=(30, 30), height=30, width=40, text='Right', action=lambda: setdir(1))
+S1 = ctrls.slider(pos=(-15, -40), width=7, length=70, axis=(1, 0.7, 0), action=lambda: setrate(S1))
+S2 = ctrls.slider(pos=(-30, -50), width=7, length=50, axis=(0, 1, 0), action=lambda: setrate(S2))
+T1 = ctrls.toggle(pos=(40, -30), width=10, height=10, text0='Red', text1='Cyan',
+                  action=lambda: togglecubecolor())
+M1 = ctrls.menu(pos=(0, 0, 0), height=7, width=25, text='Options')
 
 # After creating the menu heading, add menu items:
-m1.items.append(('Left', lambda: setdir(-1))) # specify menu item title and action to perform
-m1.items.append(('Right', lambda: setdir(1)))
-m1.items.append(('---------',None)) # a dummy separator
-m1.items.append(('Red', lambda: cubecolor(color.red)))
-m1.items.append(('Cyan', lambda: cubecolor(color.cyan)))
-
-s1.value = 70 # update the slider
-setrate(s1) # set the rotation rate of the cube
+M1.items.append(('Left', lambda: setdir(-1))) # specify menu item title and action to perform
+M1.items.append(('Right', lambda: setdir(1)))
+M1.items.append(('---------', None)) # a dummy separator
+M1.items.append(('Red', lambda: cubecolor(vp.color.red)))
+M1.items.append(('Cyan', lambda: cubecolor(vp.color.cyan)))
+
+S1.value = 70 # update the slider
+setrate(S1) # set the rotation rate of the cube
 setdir(-1) # set the rotation direction of the cube
 
 while True:
-    rate(100)
-    cube.rotate(axis=(0,1,0), angle=cube.dir*cube.dtheta)
-       
+    vp.rate(100)
+    CUBE.rotate(axis=(0, 1, 0), angle=CUBE.dir*CUBE.dtheta)
+