   AR artoolkitplus and background texture
  Hy.I have create a simple marker detection with artoolkitplus.I can get the ModelViewMatrix for each marker and is correct , so i have a problem:1)I visualize a plane wit the camera grabbed image of the webcam.I set the artoolkitplus matrix to my 3d object ,all work fine , but when i go away from the camera the translate matrix increase and the 3d object is displayed after the plane and i can't see the object , only the plane with texture.2)the artoolkitplus offer also a ProjectionMatrix for marker , how i can use it ?is this the problem?Thanks.   
  I suppose that is a camera parameters problem .The engine that i use (wild magic 4) have this parameters:m_spkCamera->SetFrustum(-1.0f,1.0f,-1.0f,1.0,1,2.0f);Vector3f kCLoc = Vector3f(0.0f,0.0f,1.0f);Vector3f kCDir = -Vector3f::UNIT_Z;Vector3f kCUp = Vector3f::UNIT_Y;Vector3f kCRight = Vector3f::UNIT_X;m_spkCamera->SetFrame(kCLoc,kCDir,kCUp,kCRight);the vectors are location(kCLoc), direction(kCDir) , up (kUp) and Right(kCRight)the camera params aresetFrustum :0 right min1 right max2 up min3 up max4 distance min5 distance maxhow i change these params for correct the problem?Thanks   