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
|
local glm = honey.glm
local Vec3 = require 'honey.vec3'
local module = {}
setmetatable(module, {__index=_G})
setfenv(1, module)
local RowLookup = {}
function RowLookup.new(_, row, data)
local self = {
row=row,
data=data,
}
setmetatable(self, RowLookup)
return self
end
setmetatable(RowLookup, {__call=RowLookup.new})
function RowLookup.__index(self, col)
return glm.mat4_get(self.data, col-1, self.row-1)
end
function RowLookup.__newindex(self, col, value)
return glm.mat4_set(self.data, col-1, self.row-1, value)
end
Mat4 = {}
function Mat4.new(_, self, values)
local self = {}
self.type = "mat4"
self.data = glm.mat4_create()
setmetatable(self, Mat4)
if values then
self[1][1] = values[1]
self[1][2] = values[2]
self[1][3] = values[3]
self[1][4] = values[4]
self[2][1] = values[5]
self[2][2] = values[6]
self[2][3] = values[7]
self[2][4] = values[8]
self[3][1] = values[9]
self[3][2] = values[10]
self[3][3] = values[11]
self[3][4] = values[12]
self[4][1] = values[13]
self[4][2] = values[14]
self[4][3] = values[15]
self[4][4] = values[16]
end
return self
end
setmetatable(Mat4, {__call=Mat4.new})
function Mat4.__index(self, key)
if type(key) == "number" then
return RowLookup(key, self.data)
else
return Mat4[key]
end
end
function Mat4.__tostring(self)
return string.format(
"/ %0.4f, %0.4f, %0.4f, %0.4f \\\n" ..
"| %0.4f, %0.4f, %0.4f, %0.4f |\n" ..
"| %0.4f, %0.4f, %0.4f, %0.4f |\n" ..
"\\ %0.4f, %0.4f, %0.4f, %0.4f /",
self[1][1], self[1][2], self[1][3], self[1][4],
self[2][1], self[2][2], self[2][3], self[2][4],
self[3][1], self[3][2], self[3][3], self[3][4],
self[4][1], self[4][2], self[4][3], self[4][4]
)
end
function Mat4.__mul(self, other)
if other.type == "mat4" then
local dest = Mat4()
glm.mat4_mul(self.data, other.data, dest.data)
return dest
elseif other.type == "vec4" then
-- todo
elseif other.type == "vec3" then
local dest = Vec3()
glm.mat4_mulv3(self.data, other.data, 1.0, dest.data)
return dest
else
error(string.format("cannot multiply Mat4 by %s", type(other)))
end
end
function Mat4.copyTo(self, dest)
glm.mat4_copy(self.data, dest.data)
end
function Mat4.identity(self)
glm.mat4_identity(self.data)
return self
end
function Mat4.zero(self)
glm.mat4_zero(self.data)
return self
end
function Mat4.translate(self, vec)
glm.translate(self.data, vec.data)
return self
end
function Mat4.rotateX(self, angle)
glm.rotate_x(self.data, angle, self.data)
return self
end
function Mat4.rotateY(self, angle)
glm.rotate_y(self.data, angle, self.data)
return self
end
function Mat4.rotateZ(self, angle)
glm.rotate_z(self.data, angle, self.data)
return self
end
function Mat4.scale(self, vec)
glm.scale(self.data, vec.data)
return self
end
function Mat4.perspective(self, fovy, aspect, near, far)
glm.perspective(fovy, aspect, near, far, self.data)
return self
end
function Mat4.perspectiveResize(self, aspect)
glm.perspective_resize(aspect, self.data)
return self
end
return module.Mat4
|
