blob: d0b1a0736dfd86bf7e59cdf4e47dd3252f0f444c (
plain)
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
Rem
bbdoc: noddybox.vector
EndRem
Module noddybox.vector
ModuleInfo "Framework: Simple Vector class"
ModuleInfo "Copyright: Public Domain"
ModuleInfo "Author: Ian Cowburn"
ModuleInfo "Version: $Revision$"
' $Id$
Strict
Import brl.math
Rem
bbdoc: Implements a 3D vector. Can be used as a 2D vector by ignoring Z.
EndRem
Type TVector
Rem
bbdoc: The X component of the vector.
EndRem
Field x:Double
Rem
bbdoc: The Y component of the vector.
EndRem
Field y:Double
Rem
bbdoc: The Z component of the vector.
EndRem
Field z:Double
Rem
bbdoc: Create a vector.
returns: The created vector.
about: @dx, @dy and @dz are the initial component values.
EndRem
Function Create:TVector(dx:Double=0.0, dy:Double=0.0, dz:Double=0.0)
Local o:TVector
o=New TVector
o.x=dx
o.y=dy
o.z=dz
Return o
End Function
Rem
bbdoc: Clone this vector to a new object.
returns: The created vector.
EndRem
Method Clone:TVector()
Return Create(x,y,z)
End Method
Rem
bbdoc: Is the vector null.
returns: True if the vector is null (all components zero), False otherwise.
EndRem
Method IsNull:Int()
Return x=0 And y=0 And z=0
End Method
Rem
bbdoc: The length of the vector.
returns: The length of the vector.
EndRem
Method Length:Double()
If (IsNull())
Return 0
Else
Return Sqr(x*x+y*y+z*z)
EndIf
End Method
Rem
bbdoc: Normalise the vector so its length is 1.
EndRem
Method Normalise()
Local l:Double=Length()
If (l<>0)
x:/l
y:/l
z:/l
EndIf
End Method
Rem
bbdoc: Set the vector so its length is @sc.
EndRem
Method SetLength(sc:Double)
Normalise()
Scale(sc)
End Method
Rem
bbdoc: Adds @sc to all components.
EndRem
Method AddScalar(sc:Double)
x:+sc
y:+sc
z:+sc
End Method
Rem
bbdoc: Reverse the direction of the vector.
EndRem
Method Minus()
x=-x
y=-y
z=-z
End Method
Rem
bbdoc: Scale all components by @sc.
EndRem
Method Scale(sc:Double)
x:*sc
y:*sc
z:*sc
End Method
Rem
bbdoc: Add another vector to this vector.
EndRem
Method Add(v:TVector)
x:+v.x
y:+v.y
z:+v.z
End Method
Rem
bbdoc: Subtract another vector from this vector.
EndRem
Method Subtract(v:TVector)
x:-v.x
y:-v.y
z:-v.z
End Method
Rem
bbdoc: Scale this vector by another vector.
EndRem
Method ScaleVector(v:TVector)
x:*v.x
y:*v.y
z:*v.z
End Method
Rem
bbdoc: Inverse scale this vector by another vector.
EndRem
Method InverseScaleVector(v:TVector)
x:/v.x
y:/v.y
z:/v.z
End Method
Rem
bbdoc: Calculate the cross product of this vector with another.
returns: A new @TVector holding the cross product.
EndRem
Method Cross:TVector(v:TVector)
Return TVector.Create(y * v.z - v.y * z, z * v.x - v.z * x, x * v.y - v.x * y)
End Method
Rem
bbdoc: Calculate the dot product of this vector with another.
returns: The dot product.
EndRem
Method Dot:Double(v:TVector)
Return x*v.x + y*v.y + z*v.z
End Method
End Type
|
