/*
================
R_PlaneForMirror
Get transformed mirrorplane and entity matrix
================
*/
void R_PlaneForMirror( msurface_t *surf, mplane_t *out, matrix4x4 m )
{
cl_entity_t *ent;
ASSERT( out != NULL );
ent = RI.currententity;
// setup mirror plane
*out = *surf->plane;
if( surf->flags & SURF_PLANEBACK )
{
VectorNegate( out->normal, out->normal );
out->dist = -out->dist;
}
if( !VectorIsNull( ent->origin ) || !VectorIsNull( ent->angles ))
{
mplane_t tmp;
if( !VectorIsNull( ent->angles )) Matrix4x4_CreateFromEntity( m, ent->angles, ent->origin, 1.0f );
else Matrix4x4_CreateFromEntity( m, vec3_origin, ent->origin, 1.0f );
tmp = *out;
// transform mirror plane by entity matrix
Matrix4x4_TransformPositivePlane( m, tmp.normal, tmp.dist, out->normal, &out->dist );
}
else Matrix4x4_LoadIdentity( m );
}
static float pfnTraceModel( physent_t *pe, float *start, float *end, trace_t *trace )
{
int old_usehull;
vec3_t start_l, end_l;
vec3_t offset, temp;
qboolean rotated;
matrix4x4 matrix;
hull_t *hull;
old_usehull = clgame.pmove->usehull;
clgame.pmove->usehull = 2;
hull = PM_HullForBsp( pe, clgame.pmove, offset );
clgame.pmove->usehull = old_usehull;
if( pe->solid == SOLID_BSP && !VectorIsNull( pe->angles ))
rotated = true;
else rotated = false;
if( rotated )
{
Matrix4x4_CreateFromEntity( matrix, pe->angles, offset, 1.0f );
Matrix4x4_VectorITransform( matrix, start, start_l );
Matrix4x4_VectorITransform( matrix, end, end_l );
}
else
{
VectorSubtract( start, offset, start_l );
VectorSubtract( end, offset, end_l );
}
SV_RecursiveHullCheck( hull, hull->firstclipnode, 0, 1, start_l, end_l, trace );
trace->ent = NULL;
if( rotated )
{
VectorCopy( trace->plane.normal, temp );
Matrix4x4_TransformPositivePlane( matrix, temp, trace->plane.dist, trace->plane.normal, &trace->plane.dist );
}
VectorLerp( start, trace->fraction, end, trace->endpos );
return trace->fraction;
}
