1 | #pragma once |
---|
2 | |
---|
3 | #include <iostream.hfa> |
---|
4 | #include "vec.hfa" |
---|
5 | |
---|
6 | forall (otype T) { |
---|
7 | struct vec3 { |
---|
8 | T x, y, z; |
---|
9 | }; |
---|
10 | } |
---|
11 | |
---|
12 | |
---|
13 | forall (otype T) { |
---|
14 | static inline { |
---|
15 | |
---|
16 | void ?{}(vec3(T)& v, T x, T y, T z) { |
---|
17 | v.[x, y, z] = [x, y, z]; |
---|
18 | } |
---|
19 | |
---|
20 | forall(| zero_assign(T)) |
---|
21 | void ?{}(vec3(T)& vec, zero_t) with (vec) { |
---|
22 | x = y = z = 0; |
---|
23 | } |
---|
24 | |
---|
25 | void ?{}(vec3(T)& vec, T val) with (vec) { |
---|
26 | x = y = z = val; |
---|
27 | } |
---|
28 | |
---|
29 | void ?{}(vec3(T)& vec, vec3(T) other) with (vec) { |
---|
30 | [x,y,z] = other.[x,y,z]; |
---|
31 | } |
---|
32 | |
---|
33 | // Assignment |
---|
34 | void ?=?(vec3(T)& vec, vec3(T) other) with (vec) { |
---|
35 | [x,y,z] = other.[x,y,z]; |
---|
36 | } |
---|
37 | forall(| zero_assign(T)) |
---|
38 | void ?=?(vec3(T)& vec, zero_t) with (vec) { |
---|
39 | x = y = z = 0; |
---|
40 | } |
---|
41 | |
---|
42 | // Primitive mathematical operations |
---|
43 | |
---|
44 | // Subtraction |
---|
45 | |
---|
46 | forall(| subtract(T)) { |
---|
47 | vec3(T) ?-?(vec3(T) u, vec3(T) v) { // TODO( can't make this const ref ) |
---|
48 | return [u.x - v.x, u.y - v.y, u.z - v.z]; |
---|
49 | } |
---|
50 | vec3(T)& ?-=?(vec3(T)& u, vec3(T) v) { |
---|
51 | u = u - v; |
---|
52 | return u; |
---|
53 | } |
---|
54 | } |
---|
55 | |
---|
56 | forall(| negate(T)) { |
---|
57 | vec3(T) -?(vec3(T) v) with (v) { |
---|
58 | return [-x, -y, -z]; |
---|
59 | } |
---|
60 | } |
---|
61 | |
---|
62 | // Addition |
---|
63 | forall(| add(T)) { |
---|
64 | vec3(T) ?+?(vec3(T) u, vec3(T) v) { // TODO( can't make this const ref ) |
---|
65 | return [u.x + v.x, u.y + v.y, u.z + v.z]; |
---|
66 | } |
---|
67 | vec3(T)& ?+=?(vec3(T)& u, vec3(T) v) { |
---|
68 | u = u + v; |
---|
69 | return u; |
---|
70 | } |
---|
71 | } |
---|
72 | |
---|
73 | // Multiplication |
---|
74 | forall(| multiply(T)) { |
---|
75 | vec3(T) ?*?(vec3(T) v, T scalar) with (v) { // TODO (can't make this const ref) |
---|
76 | return [x * scalar, y * scalar, z * scalar]; |
---|
77 | } |
---|
78 | vec3(T) ?*?(T scalar, vec3(T) v) { // TODO (can't make this const ref) |
---|
79 | return v * scalar; |
---|
80 | } |
---|
81 | vec3(T) ?*?(vec3(T) u, vec3(T) v) { |
---|
82 | return [u.x * v.x, u.y * v.y, u.z * v.z]; |
---|
83 | } |
---|
84 | vec3(T)& ?*=?(vec3(T)& v, T scalar) { |
---|
85 | v = v * scalar; |
---|
86 | return v; |
---|
87 | } |
---|
88 | vec3(T)& ?*=?(vec3(T)& u, vec3(T) v) { |
---|
89 | u = u * v; |
---|
90 | return u; |
---|
91 | } |
---|
92 | } |
---|
93 | |
---|
94 | // Division |
---|
95 | forall(| divide(T)) { |
---|
96 | vec3(T) ?/?(vec3(T) v, T scalar) with (v) { |
---|
97 | return [x / scalar, y / scalar, z / scalar]; |
---|
98 | } |
---|
99 | vec3(T) ?/?(vec3(T) u, vec3(T) v) { |
---|
100 | return [u.x / v.x, u.y / v.y, u.z / v.z]; |
---|
101 | } |
---|
102 | vec3(T)& ?/=?(vec3(T)& v, T scalar) with (v) { |
---|
103 | v = v / scalar; |
---|
104 | return v; |
---|
105 | } |
---|
106 | vec3(T)& ?/=?(vec3(T)& u, vec3(T) v) { |
---|
107 | u = u / v; |
---|
108 | return u; |
---|
109 | } |
---|
110 | } |
---|
111 | |
---|
112 | // Relational Operators |
---|
113 | forall(| equality(T)) { |
---|
114 | bool ?==?(vec3(T) u, vec3(T) v) with (u) { |
---|
115 | return x == v.x && y == v.y && z == v.z; |
---|
116 | } |
---|
117 | bool ?!=?(vec3(T) u, vec3(T) v) { |
---|
118 | return !(u == v); |
---|
119 | } |
---|
120 | } |
---|
121 | |
---|
122 | // Geometric functions |
---|
123 | forall(| add(T) | multiply(T)) |
---|
124 | T dot(vec3(T) u, vec3(T) v) { |
---|
125 | return u.x * v.x + u.y * v.y + u.z * v.z; |
---|
126 | } |
---|
127 | |
---|
128 | forall(| subtract(T) | multiply(T)) |
---|
129 | vec3(T) cross(vec3(T) u, vec3(T) v) { |
---|
130 | return (vec3(T)){ u.y * v.z - v.y * u.z, |
---|
131 | u.z * v.x - v.z * u.x, |
---|
132 | u.x * v.y - v.x * u.y }; |
---|
133 | } |
---|
134 | |
---|
135 | } // static inline |
---|
136 | } |
---|
137 | |
---|
138 | forall(dtype ostype, otype T | writeable(T, ostype)) { |
---|
139 | ostype & ?|?(ostype & os, vec3(T) v) with (v) { |
---|
140 | return os | '<' | x | ',' | y | ',' | z | '>'; |
---|
141 | } |
---|
142 | void ?|?(ostype & os, vec3(T) v ) with (v) { |
---|
143 | (ostype &)(os | v); ends(os); |
---|
144 | } |
---|
145 | } |
---|
146 | |
---|