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
|
local Mat3 = {}
Mat3.index = function(i, j)
return (i-1) + 3*(j-1)
end
Mat3.tostring = function(mat)
local str = '[ ['..
tostring(honey.cglm.get_value(mat, 0))..', '..
tostring(honey.cglm.get_value(mat, 3))..', '..
tostring(honey.cglm.get_value(mat, 6))..']\n ['..
tostring(honey.cglm.get_value(mat, 1))..', '..
tostring(honey.cglm.get_value(mat, 4))..', '..
tostring(honey.cglm.get_value(mat, 7))..']\n ['..
tostring(honey.cglm.get_value(mat, 2))..', '..
tostring(honey.cglm.get_value(mat, 5))..', '..
tostring(honey.cglm.get_value(mat, 8))..'] ]'
return str
end
Mat3.new = function(tbl)
if tbl == nil then
return honey.cglm.new_array_zero(9)
end
if #tbl ~= 9 then
error('3x3 matrices require exactly nine elements!')
end
local mat3 = honey.cglm.new_array_zero(9)
for i = 0,8 do
honey.cglm.set_value(mat3, i, tbl[i+1])
end
return mat3
end
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
local Mat4 = {}
Mat4.index = function(i, j)
return (i-1) + 4*(j-1)
end
Mat4.tostring = function(matrix)
str = ''
for i = 1,4 do
for j = 1,4 do
str = str..tostring(honey.cglm.get_value(matrix, Mat4.index(i,j)))..', '
end
str = str..'\n'
end
return str
end
Mat4.new = function(tbl)
if tbl == nil then
return honey.cglm.new_array_zero(16)
end
if #tbl ~= 16 then
error('4x4 matrices require exactly 16 elements!')
end
local mat4 = honey.cglm.new_array_zero(16)
honey.cglm.set_value(mat4, 0, tbl[1])
honey.cglm.set_value(mat4, 1, tbl[5])
honey.cglm.set_value(mat4, 2, tbl[9])
honey.cglm.set_value(mat4, 3, tbl[13])
honey.cglm.set_value(mat4, 4, tbl[2])
honey.cglm.set_value(mat4, 5, tbl[6])
honey.cglm.set_value(mat4, 6, tbl[10])
honey.cglm.set_value(mat4, 7, tbl[14])
honey.cglm.set_value(mat4, 8, tbl[3])
honey.cglm.set_value(mat4, 9, tbl[7])
honey.cglm.set_value(mat4, 10, tbl[11])
honey.cglm.set_value(mat4, 11, tbl[15])
honey.cglm.set_value(mat4, 12, tbl[4])
honey.cglm.set_value(mat4, 13, tbl[8])
honey.cglm.set_value(mat4, 14, tbl[12])
honey.cglm.set_value(mat4, 15, tbl[16])
setmetatable(mat4, Mat4.mt)
return mat4
end
return function() return Mat3, Mat4 end
|
