1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
from visual import *
from random import uniform, randint
scene.forward = (-0.25,-0.25,1)
nboxes = 8
nlinks = 16
# Create some random boxes:
nodes = []
for t in arange(-pi,pi,2*pi/nboxes):
b = cylinder( pos=(10*sin(t),0,10*cos(t)) )
b.color = b.icolor = (0.5,0.5,1)
height = uniform(0.5,4)
b.axis = (0,height,0)
nodes.append( b )
# Create some random links:
links = []
for l in range(nlinks):
i = randint(0,nboxes-1)
j = randint(0,nboxes-1)
c = curve( ends=[nodes[i].pos,nodes[j].pos], radius=0.2 )
c.red = 0
c.green = uniform(0.3,1)
c.blue = 0
c.pos = c.ends
links.append(c)
# Draw a grid:
for i in range(11):
curve(pos=[(2*i-10,0,-10),(2*i-10,0,10)], color=color.cyan)
curve(pos=[(-10,0,2*i-10),(10,0,2*i-10)], color=color.cyan)
box(pos=(0,-0.6,0),width=20,length=20,height=1,color=(0,0,0.1))
# Drag and drop loop
drag = None
while 1:
if scene.mouse.events:
c = scene.mouse.getevent()
if drag and (c.drop or c.click): # drop the selected object
dp = c.project(normal=scene.up)
if dp: drag.pos = dp
drag.color = drag.icolor
drag = None
elif c.pick and hasattr(c.pick,"icolor"): # pick up the object
drag = c.pick
drag.color = color.white
if drag:
dp = scene.mouse.project(normal=scene.up)
if dp: drag.pos = dp
for lnk in links: lnk.pos = lnk.ends
|
