lpnf
/
lovr
mirror of https://github.com/bjornbytes/lovr.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

quat:direction returns vec3;

This commit is contained in:
bjorn 2019-08-19 14:19:10 -07:00
parent 97e90a8699
commit b1b97ddb02
2 changed files with 7 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/api/l_vectors.c
View File

@ -1301,12 +1301,9 @@ static int l_lovrQuatNormalize(lua_State* L) {
static int l_lovrQuatDirection(lua_State* L) {
quat q = luax_checkvector(L, 1, V_QUAT, NULL);
float x, y, z;
quat_getDirection(q, &x, &y, &z);
lua_pushnumber(L, x);
lua_pushnumber(L, y);
lua_pushnumber(L, z);
return 3;
vec3 v = luax_newtempvector(L, V_VEC3);
quat_getDirection(q, v);
return 1;
}
static int l_lovrQuatConjugate(lua_State* L) {

8
src/core/maf.h
View File

@ -184,10 +184,10 @@ MAF quat quat_normalize(quat q) {
return q;
}
MAF void quat_getDirection(quat q, float* x, float* y, float* z) {
*x = -2.f * q[0] * q[2] - 2.f * q[3] * q[1];
*y = -2.f * q[1] * q[2] + 2.f * q[3] * q[0];
*z = -1.f + 2.f * q[0] * q[0] + 2.f * q[1] * q[1];
MAF void quat_getDirection(quat q, vec3 v) {
v[0] = -2.f * q[0] * q[2] - 2.f * q[3] * q[1];
v[1] = -2.f * q[1] * q[2] + 2.f * q[3] * q[0];
v[2] = -1.f + 2.f * q[0] * q[0] + 2.f * q[1] * q[1];
}
MAF quat quat_conjugate(quat q) {