void GroundPlane::setTransform( const MatrixF &mat )
{
Parent::setTransform( mat );
// Parent::setTransforms ends up setting our worldBox to something other than
// global, so we have to set it back... but we can't actually call setGlobalBounds
// again because it does extra work adding and removing us from the container.
mGlobalBounds = true;
mObjBox.minExtents.set(-1e10, -1e10, -1e10);
mObjBox.maxExtents.set( 1e10, 1e10, 1e10);
resetWorldBox();
mPlaneBox = getPlaneBox();
}
bool GroundPlane::buildPolyList( PolyListContext context, AbstractPolyList* polyList, const Box3F& box, const SphereF& )
{
polyList->setObject( this );
polyList->setTransform( &MatrixF::Identity, Point3F( 1.0f, 1.0f, 1.0f ) );
if(context == PLC_Navigation)
{
F32 z = getPosition().z;
Point3F
p0(box.minExtents.x, box.maxExtents.y, z),
p1(box.maxExtents.x, box.maxExtents.y, z),
p2(box.maxExtents.x, box.minExtents.y, z),
p3(box.minExtents.x, box.minExtents.y, z);
// Add vertices to poly list.
U32 v0 = polyList->addPoint(p0);
polyList->addPoint(p1);
polyList->addPoint(p2);
polyList->addPoint(p3);
// Add plane between first three vertices.
polyList->begin(0, 0);
polyList->vertex(v0);
polyList->vertex(v0+1);
polyList->vertex(v0+2);
polyList->plane(v0, v0+1, v0+2);
polyList->end();
// Add plane between last three vertices.
polyList->begin(0, 1);
polyList->vertex(v0+2);
polyList->vertex(v0+3);
polyList->vertex(v0);
polyList->plane(v0+2, v0+3, v0);
polyList->end();
return true;
}
Box3F planeBox = getPlaneBox();
polyList->addBox( planeBox, mMaterial );
return true;
}
void GroundPlane::buildConvex( const Box3F& box, Convex* convex )
{
mConvexList->collectGarbage();
Box3F planeBox = getPlaneBox();
if ( !box.isOverlapped( planeBox ) )
return;
// See if we already have a convex in the working set.
BoxConvex *boxConvex = NULL;
CollisionWorkingList &wl = convex->getWorkingList();
CollisionWorkingList *itr = wl.wLink.mNext;
for ( ; itr != &wl; itr = itr->wLink.mNext )
{
if ( itr->mConvex->getType() == BoxConvexType &&
itr->mConvex->getObject() == this )
{
boxConvex = (BoxConvex*)itr->mConvex;
break;
}
}
if ( !boxConvex )
{
boxConvex = new BoxConvex;
mConvexList->registerObject( boxConvex );
boxConvex->init( this );
convex->addToWorkingList( boxConvex );
}
// Update our convex to best match the queried box
if ( boxConvex )
{
Point3F queryCenter = box.getCenter();
boxConvex->mCenter = Point3F( queryCenter.x, queryCenter.y, -GROUND_PLANE_BOX_HEIGHT_HALF );
boxConvex->mSize = Point3F( box.getExtents().x,
box.getExtents().y,
GROUND_PLANE_BOX_HEIGHT_HALF );
}
}
