/*
================
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 );
}
/*
=============
R_LoadIdentity
=============
*/
void R_LoadIdentity( void )
{
if( tr.modelviewIdentity ) return;
Matrix4x4_LoadIdentity( RI.objectMatrix );
Matrix4x4_Copy( RI.modelviewMatrix, RI.worldviewMatrix );
pglMatrixMode( GL_MODELVIEW );
GL_LoadMatrix( RI.modelviewMatrix );
tr.modelviewIdentity = true;
}
/*
================
R_BeginDrawMirror
Setup texture matrix for mirror texture
================
*/
void R_BeginDrawMirror( msurface_t *fa )
{
matrix4x4 m1, m2, matrix;
GLfloat genVector[4][4];
mextrasurf_t *es;
int i;
es = SURF_INFO( fa, RI.currentmodel );
Matrix4x4_Copy( matrix, es->mirrormatrix );
Matrix4x4_LoadIdentity( m1 );
Matrix4x4_ConcatScale( m1, 0.5f );
Matrix4x4_Concat( m2, m1, matrix );
Matrix4x4_LoadIdentity( m1 );
Matrix4x4_ConcatTranslate( m1, 0.5f, 0.5f, 0.5f );
Matrix4x4_Concat( matrix, m1, m2 );
for( i = 0; i < 4; i++ )
{
genVector[0][i] = i == 0 ? 1 : 0;
genVector[1][i] = i == 1 ? 1 : 0;
genVector[2][i] = i == 2 ? 1 : 0;
genVector[3][i] = i == 3 ? 1 : 0;
}
GL_TexGen( GL_S, GL_OBJECT_LINEAR );
GL_TexGen( GL_T, GL_OBJECT_LINEAR );
GL_TexGen( GL_R, GL_OBJECT_LINEAR );
GL_TexGen( GL_Q, GL_OBJECT_LINEAR );
pglTexGenfv( GL_S, GL_OBJECT_PLANE, genVector[0] );
pglTexGenfv( GL_T, GL_OBJECT_PLANE, genVector[1] );
pglTexGenfv( GL_R, GL_OBJECT_PLANE, genVector[2] );
pglTexGenfv( GL_Q, GL_OBJECT_PLANE, genVector[3] );
GL_LoadTexMatrix( matrix );
}
/*
=============
R_SetupModelviewMatrix
=============
*/
static void R_SetupModelviewMatrix( const ref_params_t *fd, matrix4x4 m )
{
#if 0
Matrix4x4_LoadIdentity( m );
Matrix4x4_ConcatRotate( m, -90, 1, 0, 0 );
Matrix4x4_ConcatRotate( m, 90, 0, 0, 1 );
#else
Matrix4x4_CreateModelview( m );
#endif
Matrix4x4_ConcatRotate( m, -fd->viewangles[2], 1, 0, 0 );
Matrix4x4_ConcatRotate( m, -fd->viewangles[0], 0, 1, 0 );
Matrix4x4_ConcatRotate( m, -fd->viewangles[1], 0, 0, 1 );
Matrix4x4_ConcatTranslate( m, -fd->vieworg[0], -fd->vieworg[1], -fd->vieworg[2] );
}
/*
=================
R_FindBmodelMirrors
Check all bmodel surfaces and make personal mirror chain
=================
*/
void R_FindBmodelMirrors( cl_entity_t *e, qboolean static_entity )
{
mextrasurf_t *extrasurf;
vec3_t mins, maxs;
msurface_t *psurf;
model_t *clmodel;
qboolean rotated;
int i, clipFlags;
clmodel = e->model;
if( static_entity )
{
Matrix4x4_LoadIdentity( RI.objectMatrix );
if( R_CullBox( clmodel->mins, clmodel->maxs, RI.clipFlags ))
return;
VectorCopy( RI.cullorigin, tr.modelorg );
clipFlags = RI.clipFlags;
}
else
{
if( !VectorIsNull( e->angles ))
{
for( i = 0; i < 3; i++ )
{
mins[i] = e->origin[i] - clmodel->radius;
maxs[i] = e->origin[i] + clmodel->radius;
}
rotated = true;
}
else
{
VectorAdd( e->origin, clmodel->mins, mins );
VectorAdd( e->origin, clmodel->maxs, maxs );
rotated = false;
}
if( R_CullBox( mins, maxs, RI.clipFlags ))
return;
if( !VectorIsNull( e->origin ) || !VectorIsNull( e->angles ))
{
if( rotated ) Matrix4x4_CreateFromEntity( RI.objectMatrix, e->angles, e->origin, 1.0f );
else Matrix4x4_CreateFromEntity( RI.objectMatrix, vec3_origin, e->origin, 1.0f );
}
else Matrix4x4_LoadIdentity( RI.objectMatrix );
e->visframe = tr.framecount; // visible
if( rotated ) Matrix4x4_VectorITransform( RI.objectMatrix, RI.cullorigin, tr.modelorg );
else VectorSubtract( RI.cullorigin, e->origin, tr.modelorg );
clipFlags = 0;
}
psurf = &clmodel->surfaces[clmodel->firstmodelsurface];
for( i = 0; i < clmodel->nummodelsurfaces; i++, psurf++ )
{
if(!( psurf->flags & SURF_REFLECT ))
continue;
if( R_CullSurface( psurf, clipFlags ))
continue;
extrasurf = SURF_INFO( psurf, RI.currentmodel );
extrasurf->mirrorchain = tr.mirror_entities[tr.num_mirror_entities].chain;
tr.mirror_entities[tr.num_mirror_entities].chain = extrasurf;
}
// store new mirror entity
if( !static_entity && tr.mirror_entities[tr.num_mirror_entities].chain != NULL )
{
tr.mirror_entities[tr.num_mirror_entities].ent = RI.currententity;
tr.num_mirror_entities++;
}
}