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
|
#include "glm_bindings.h"
int honey_glm_vec3_mt_ref = LUA_NOREF;
int honey_glm_vec4_mt_ref = LUA_NOREF;
int honey_glm_mat3_mt_ref = LUA_NOREF;
int honey_glm_mat4_mt_ref = LUA_NOREF;
void honey_setup_glm(lua_State* L)
{
lua_pushnil(L);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* GLM Array Setup Functions
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
static void setup_new_array(lua_State* L,
honey_glm_array* array,
honey_glm_array_type type)
{
unsigned int size;
switch(type) {
case VEC3:
size = 3;
break;
case VEC4:
size = 4;
break;
case MAT3:
size = 9;
break;
case MAT4:
size = 16;
break;
default:
honey_lua_throw_error(L,
"unknown array type: %d",
type);
break;
}
array->type = type;
array->size = size;
array->data = calloc(size, sizeof(float));
if (array->data == NULL)
honey_lua_throw_error(L,
"failed to allocate memory for array of type %d",
type);
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
static int honey_glm_new_vec3(lua_State* L)
{
honey_glm_array* vec3 = lua_newuserdata(L, sizeof(honey_glm_array));
setup_new_array(L, vec3, VEC3);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_glm_vec3_mt_ref);
lua_setmetatable(L, -2);
return 1;
}
static int honey_glm_new_vec4(lua_State* L)
{
honey_glm_array* vec4 = lua_newuserdata(L, sizeof(honey_glm_array));
setup_new_array(L, vec4, VEC4);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_glm_vec4_mt_ref);
lua_setmetatable(L, -2);
return 1;
}
static int honey_glm_new_mat3(lua_State* L)
{
honey_glm_array* mat3 = lua_newuserdata(L, sizeof(honey_glm_array));
setup_new_array(L, mat3, MAT3);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_glm_mat3_mt_ref);
lua_setmetatable(L, -2);
return 1;
}
static int honey_glm_new_mat4(lua_State* L)
{
honey_glm_array* mat4 = lua_newuserdata(L, sizeof(honey_glm_array));
setup_new_array(L, mat4, MAT4);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_glm_mat4_mt_ref);
lua_setmetatable(L, -2);
return 1;
}
|
