41 lines
1010 B
Python
Executable File
41 lines
1010 B
Python
Executable File
#!/usr/bin/env python
|
|
|
|
from pygame_geometry.context import Surface
|
|
from pygame_geometry.curves import Trajectory, BezierCurve
|
|
from pygame_geometry.abstract import Point
|
|
from pygame_geometry import colors
|
|
|
|
import random
|
|
|
|
# create objects
|
|
surface=Surface(name="Curves demonstration")
|
|
l=10
|
|
points=[Point(2*x,random.randint(-5,5)) for x in range(l)]
|
|
t=Trajectory(points,segment_color=colors.GREEN)
|
|
b=BezierCurve(points,segment_color=colors.RED)
|
|
n=0
|
|
ncp=50 #number construction points
|
|
|
|
while surface.open:
|
|
# surface stuff
|
|
surface.check()
|
|
surface.clear()
|
|
surface.control()
|
|
surface.show() # show a math grid in background
|
|
|
|
# update
|
|
Point.turnPoints([1/1000 for i in range(l)],points)
|
|
n=(n+1)%(ncp+1)
|
|
b.showConstruction(surface,n/ncp)
|
|
p1=b(n/ncp)
|
|
p2=Point(*t(n/ncp))
|
|
|
|
# show
|
|
t.show(surface)
|
|
b.show(surface)
|
|
p1.show(surface,color=colors.YELLOW,radius=0.1,fill=True)
|
|
p2.show(surface,color=colors.YELLOW,radius=0.1,fill=True)
|
|
|
|
# flip
|
|
surface.flip()
|