model_brush: don't calculate box halfsize twice

diff --git a/model_brush.c b/model_brush.c
index a7bb2a58354ed37debdeeae765a67067a1c7e210..301481b79a6bdc0b20583ef18ea5bc6301fd358a 100644 (file)
--- a/model_brush.c
+++ b/model_brush.c
@@ -7187,7 +7187,7 @@ void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        const colbrushf_t *brush;
        const int *e;
        const texture_t *texture;
-       vec3_t start, end, startmins, startmaxs, endmins, endmaxs, mins, maxs;
+       vec3_t start, end, startmaxs, endmaxs, mins, maxs;
        vec3_t nodebigmins, nodebigmaxs, nodestart, nodeend, sweepnodemins, sweepnodemaxs;
        vec_t d1, d2, d3, d4, f, nodestackline[1024][6];
        int axis, nodenum, nodestackpos = 0, nodestack[1024];
@@ -7216,16 +7216,12 @@ void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        // calculate tracebox-like parameters for efficient culling
        VectorMAM(0.5f, thisbrush_start->mins, 0.5f, thisbrush_start->maxs, start);
        VectorMAM(0.5f, thisbrush_end->mins, 0.5f, thisbrush_end->maxs, end);
-       VectorSubtract(thisbrush_start->mins, start, startmins);
        VectorSubtract(thisbrush_start->maxs, start, startmaxs);
-       VectorSubtract(thisbrush_end->mins, end, endmins);
        VectorSubtract(thisbrush_end->maxs, end, endmaxs);
-       mins[0] = min(startmins[0], endmins[0]);
-       mins[1] = min(startmins[1], endmins[1]);
-       mins[2] = min(startmins[2], endmins[2]);
        maxs[0] = max(startmaxs[0], endmaxs[0]);
        maxs[1] = max(startmaxs[1], endmaxs[1]);
        maxs[2] = max(startmaxs[2], endmaxs[2]);
+       VectorNegate(maxs, mins);
 
        // push first node
        nodestackline[nodestackpos][0] = start[0];