Re: [Visualpython-users] Uniform scaling with gdisplay

[Poul R. <Pou...@sk...>]

This iss excellent - thank you!

Best regards,
Poul Riis



Bru...@nc... writes:
>from __future__ import division, print_function
>from visual import *
>scene.title = 'Spiral'
>scene.width = scene.height = 800
>scene.background = color.white
>scene.foreground = color.black
>scale = 1
>xaxis = curve(pos=[(-scale,0),(scale,0)], color=color.gray(.5))
>yaxis = curve(pos=[(0,-scale),(0,scale)], color=color.gray(.5))
>xlabel = label(pos=(0.95*scale,-0.05*scale), text='x', box=0)
>ylabel = label(pos=(0.05*scale,0.95*scale), text='y', box=0)
>
>p = points(color=color.blue)
>kr = 1
>kt = 1
>t = 0
>dt = pi/360
>while True:
>rate(1000)
>r = kr*t
>theta = kt*t
>x = r*cos(theta)
>y = r*sin(theta)
>t += dt
>m = max([x,y])
>if m > scale:
>scale = 1.05*m
>xlabel.pos = (0.95*scale,-0.05*scale)
>ylabel.pos = (0.05*scale,0.95*scale)
>xaxis.pos = [(-scale,0),(scale,0)]
>yaxis.pos = [(0,-scale),(0,scale)]
>p.append(pos=(x,y))