Demonstrates how to create a spiral spring sketch. Uses a custom dialog window to get input parameters.
# Everyone Loves a Slinky # Adapted from: # http://forum.alibre.com/viewtopic.php?f=9&t=5752&p=30750&hilit=Spring#p30750 import sys import math # create dialog window Win = Windows() Options = [] Options.append(['Angle Increment', WindowsInputTypes.Real, 0.05]) Options.append(['Loop Scale', WindowsInputTypes.Real, 0.8]) Options.append(['Height Scale', WindowsInputTypes.Real, 1.0]) Options.append(['Major Helix Width Scale', WindowsInputTypes.Real, 2.0]) Options.append(['Turn Density', WindowsInputTypes.Integer, 25]) # show dialog window and get values Values = Win.OptionsDialog('Everyone Loves a Slinky', Options) if Values == None: sys.exit('User cancelled') AngleIncrement = Values[0] LoopScale = Values[1] HeightScale = Values[2] WidthScale = Values[3] TurnDensity = Values[4] print 'Angle Increment = %f' % AngleIncrement print 'Loop Scale = %f' % LoopScale print 'Height Scale = %f' % HeightScale print 'Width Scale = %f' % WidthScale print 'Turn Density = %d' % TurnDensity # create list of points for 3d sketch Points = [] Angle = 0.0 for Pass in range(0, 437): X = (WidthScale + LoopScale * math.cos(Angle * TurnDensity)) * math.cos(Angle) Y = (WidthScale + LoopScale * math.cos(Angle * TurnDensity)) * math.sin(Angle) Z = HeightScale * Angle + LoopScale * math.sin(Angle * TurnDensity) Points.extend([X, Y, Z]) Angle += AngleIncrement # create part and add 3d sketch Slinky = Part('Slinky') Path = Slinky.Add3DSketch('Path') Path.AddBspline(Points)