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#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)
{
honey_lua_create_table(L, NULL, 0);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 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;
}
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