0x042158e3 in csIntersect3::BoxFrustum (box=@0xbf9a87a0, f=0xbf9a86a8,
    inClipMask=63, outClipMask=@0xbf9a87b8) at libs/csgeom/math3d.cpp:883
883           float NP = (float)(d.x*fabs(f->A ())+d.y*fabs(f->B ())+d.z*fabs(f->C ()));
(gdb) print f
$1 = (csPlane3 *) 0xbf9a86a8
(gdb) bt
#0  0x042158e3 in csIntersect3::BoxFrustum (box=@0xbf9a87a0, f=0xbf9a86a8,
    inClipMask=63, outClipMask=@0xbf9a87b8) at libs/csgeom/math3d.cpp:883
#1  0x041f25d1 in CS::Plugin::ImprovedTerrain::csTerrainSystem::GetRenderMeshes
    (this=0x98b3220, num=@0xbf9a88f8, rview=0xbf9a8ea0, movable=0x98cc1fc,
    frustum_mask=63) at plugins/mesh/terrain/improved/terrainsystem.cpp:451
#2  0x0049b270 in csMeshWrapper::GetRenderMeshes (this=0x98cc178,
    n=@0xbf9a88f8, rview=0xbf9a8ea0, frustum_mask=63)
    at plugins/engine/3d/meshobj.cpp:651
#3  0x004e2624 in csSectorVisibleMeshCallback::ObjectVisible (this=0xb587f670,
    cmesh=0x98cc178, frustum_mask=63) at plugins/engine/3d/sector.cpp:461
#4  0x004e84b8 in csSectorVisibleMeshCallback::ObjectVisible (this=0xb587f670,
    visobj=0x98cc1b8, mesh=0x98cc1b0, frustum_mask=63)
    at plugins/engine/3d/sector.cpp:482
#5  0x0518eb15 in csFrustumVis::TestObjectVisibility (this=0x9810130,
    obj=0x9839f70, data=0xbf9a8a24, frustum_mask=63)
    at plugins/culling/frustvis/frustvis.cpp:403
#6  0x0518edab in csFrustumVis::FrustTest_Traverse (this=0x9810130,
    treenode=0x9833040, data=0xbf9a8a24, cur_timestamp=51572193,
    frustum_mask=63) at plugins/culling/frustvis/frustvis.cpp:483
#7  0x051902ca in csFrustumVis::VisTest (this=0x9810130, rview=0xbf9a8ea0,
    viscallback=0xb587f684) at plugins/culling/frustvis/frustvis.cpp:521
#8  0x004de21d in csSector::GetVisibleMeshes (this=0x98c8f18, rview=0xbf9a8ea0)
    at plugins/engine/3d/sector.cpp:551
#9  0x009a7972 in csGenericRenderStep::Perform (this=0x9815dc8,
    rview=0xbf9a8ea0, sector=0x98c8f50, light=0x0, stacks=0x97b22b4)
    at plugins/engine/renderloop/stdsteps/generic.cpp:394
#10 0x009a6deb in csGenericRenderStep::Perform (this=0x9815dc8,
    rview=0xbf9a8ea0, sector=0x98c8f50, stacks=0x97b22b4)
    at plugins/engine/renderloop/stdsteps/generic.cpp:307
#11 0x00466374 in csRenderLoop::Draw (this=0x980c168, rview=0xbf9a8ea0,
    s=0x98c8f50, mesh=0x0) at plugins/engine/3d/renderloop.cpp:83
#12 0x004b5e9d in csEngine::Draw (this=0x97863e0, c=0x97d1ce4,
    view=0xb587f514, mesh=0x0) at plugins/engine/3d/engine.cpp:1467
#13 0x0224573b in csView::Draw (this=0x97dcfb0, mesh=0x0)
    at libs/cstool/csview.cpp:160
#14 0x021f6d57 in celPcDefaultCamera::Draw (this=0x97da0e0)
    at plugins/propclass/defcam/defcam.cpp:910
#15 0x022413ee in celPcCameraCommon::TickEveryFrame (this=0x97da0e0)
    at libs/celtool/camera.cpp:278
#16 0x00a8ecef in celPlLayer::HandleEvent (this=0x97a8630, ev=@0xb587fdfc)
    at plugins/stdphyslayer/pl.cpp:121
#17 0x00aa4ed6 in celPlLayer::EventHandler::HandleEvent (this=0x97a7bf0,
    ev=@0xb587fdfc) at ./plugins/stdphyslayer/pl.h:258
#18 0x080935a4 in csEventTree::Dispatch (this=0x97a9180, e=@0xb587fdfc)
    at libs/csutil/cssubscription.cpp:576
#19 0x08093674 in csEventTree::Notify (this=0x97a9180)
    at libs/csutil/cssubscription.cpp:546
#20 0x08086912 in csEventQueue::Notify (this=0x9792f60, name=@0x9798384)
    at libs/csutil/cseventq.cpp:278
#21 0x0808a106 in csEventQueue::iTypedFrameEventDispatcher::HandleEvent (
    this=0x979837c) at ./include/csutil/cseventq.h:262
#22 0x080935a4 in csEventTree::Dispatch (this=0x9771908, e=@0x977bb04)
    at libs/csutil/cssubscription.cpp:576
#23 0x08093674 in csEventTree::Notify (this=0x9771908)
    at libs/csutil/cssubscription.cpp:546
#24 0x08086912 in csEventQueue::Notify (this=0x9792f60, name=@0x9793008)
    at libs/csutil/cseventq.cpp:278
#25 0x080869ef in csEventQueue::Process (this=0x9792f60)
    at libs/csutil/cseventq.cpp:294
#26 0x080636d5 in csDefaultRunLoop (r=0x9793cbc)
    at libs/csutil/generic/runloop.cpp:91
#27 0x08050eba in csApplicationFramework::Run ()
    at /root/development/CS/include/cstool/csapplicationframework.h:330
#28 0x080507e0 in AppNode::Application (this=0xbf9a9320)
    at src/servers/csnode/appnode.cpp:260
#29 0x08064f98 in csApplicationFramework::Start ()
    at libs/cstool/csapplicationframework.cpp:71
#30 0x0806516a in csApplicationFramework::Main (this=0xbf9a9320, argc=1,
    argv=0xbf9a9454) at libs/cstool/csapplicationframework.cpp:131
#31 0x0805616c in csApplicationRunner<AppNode>::Run (argc=1, argv=0xbf9a9454)
    at /root/development/CS/include/cstool/csapplicationframework.h:441
#32 0x0805611e in main (argc=1, argv=0xbf9a9454)
    at src/servers/csnode/main.cpp:30