diff options
Diffstat (limited to 'src/qcommon/q_shared.h')
| -rw-r--r-- | src/qcommon/q_shared.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/qcommon/q_shared.h b/src/qcommon/q_shared.h index e23f8725..667fba73 100644 --- a/src/qcommon/q_shared.h +++ b/src/qcommon/q_shared.h @@ -452,7 +452,15 @@ typedef struct { #define Vector4Copy(a,b) ((b)[0]=(a)[0],(b)[1]=(a)[1],(b)[2]=(a)[2],(b)[3]=(a)[3]) #define Vector4Add(a,b,c) ((c)[0]=(a)[0]+(b)[0],(c)[1]=(a)[1]+(b)[1],(c)[2]=(a)[2]+(b)[2],(c)[3]=(a)[3]+(b)[3]) -#define SnapVector(v) {v[0]=((int)(v[0]));v[1]=((int)(v[1]));v[2]=((int)(v[2]));} +// DO NOT USE: Snaps differently depending on whether number is positive or +// negative! -0.5 and 0.5 both snapped to zero! +//#define SnapVector(v) {v[0]=((int)(v[0]));v[1]=((int)(v[1]));v[2]=((int)(v[2]));} + +// Snaps the vector to the floor value always, ignoring any weirdness from +// snapping negative versus positive numbers +#define Floor(f) ( (f) >= 0.f ? (int)(f) : -(int)(-(f)) ) +#define SnapVector(v) {(v)[0]=Floor((v)[0]);(v)[1]=Floor((v)[1]);(v)[2]=Floor((v)[2]);} + // just in case you do't want to use the macros vec_t _DotProduct( const vec3_t v1, const vec3_t v2 ); void _VectorSubtract( const vec3_t veca, const vec3_t vecb, vec3_t out ); |