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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
#
# Copyright (c) 2001 by Jim Menard <jimm@io.com>
#
# Released under the same license as Ruby. See
# http://www.ruby-lang.org/en/LICENSE.txt.
#
retquire 'View'
class BoidView < View
BODY_COLOR = [0, 0, 0]
BEAK_COLOR = [0.75, 0.5, 0.0]
SHADOW_COLOR = [0.25, 0.55, 0.25]
HALF_WING_BASE = 3
HALF_LENGTH = 5
HALF_THICKNESS = 1
NOSE_LENGTH = 3
@@object = nil
@@shadow = nil
@@wings = nil
@@wingsShadows = nil
def initialize(model)
super(model, [0, 0, 0])
@wings = nil
@wingsShadows = nil
end
def makeObject
@@object = BoidView.makeObject() unless @@object
@object = @@object
@wings = @@wings
end
def makeShadow
BoidView.makeShadow() unless @@shadow
@shadow = @@shadow
@wingsShadows = @@wingsShadows
end
def drawObject
super()
angle = 0
case model.wingFlapPos
when 0
angle = 60
when 1, 7
angle = 30
when 2, 6
angle = 0
when 3, 5
angle = -30
when 4
angle = -60
end
PushMatrix()
Rotate(angle, 0, 0, 1)
CallList(@wings[0])
Rotate(angle * -2, 0, 0, 1)
CallList(@wings[1])
PopMatrix()
end
def BoidView.makeObject
makeWings()
object = GenLists(1)
NewList(object, COMPILE)
makeBody()
makeNose()
EndList()
return object
end
def BoidView.makeShadow
@@shadow = GenLists(1)
NewList(@@shadow, COMPILE)
p0 = Point::ORIGIN.dup()
p1 = Point::ORIGIN.dup()
dims = Point.new(HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
p0.subtractPoint(dims)
p1.addPoint(dims)
groundLevel = -($PARAMS['world_height'] / 2) + 1
Color(SHADOW_COLOR)
Begin(TQUADS)
Vertex(p1.x, groundLevel, p0.z)
Vertex(p0.x, groundLevel, p0.z)
Vertex(p0.x, groundLevel, p1.z)
Vertex(p1.x, groundLevel, p1.z)
End()
# Begin(TRIANGLES)
# Vertex(p1.x, groundLevel, p1.z)
# Vertex(0, groundLevel, p0.z)
# Vertex(p0.x, groundLevel, p1.z)
# End()
EndList()
end
def BoidView.makeBody
p0 = Point::ORIGIN.dup()
p1 = Point::ORIGIN.dup()
dims = Point.new(HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
p0.subtractPoint(dims)
p1.addPoint(dims)
Color(BODY_COLOR)
Graphics.boxFromCorners(p0, p1)
end
def BoidView.makeWings
@@wings = []
len = -$PARAMS['boid_wing_length']
@@wings << makeOneWing(len)
@@wings << makeOneWing(-len)
end
def BoidView.makeOneWing(len)
wing = GenLists(1)
NewList(wing, COMPILE)
Color(BODY_COLOR)
Begin(TRIANGLES)
Vertex(0, 0, -HALF_WING_BASE)
Vertex(len, 0, 0)
Vertex(0, 0, HALF_WING_BASE)
End()
EndList()
return wing
end
def BoidView.makeNose()
Color(BEAK_COLOR)
Begin(TRIANGLE_FAN)
Vertex(0, 0, HALF_LENGTH + NOSE_LENGTH)
Vertex( HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
Vertex(-HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
Vertex(-HALF_THICKNESS, -HALF_THICKNESS, HALF_LENGTH)
Vertex( HALF_THICKNESS, -HALF_THICKNESS, HALF_LENGTH)
End()
end
end
|