Rendering external objects

Hello,

I'm trying to integrate SpeedTree into Torque 3D. I have a problem with project and model view matrices settings.
SpeedTree has following function for view parameters settings:

st_bool CView::Set(const Vec3&   vCameraPos,
                   const Mat4x4& mProjection,
                   const Mat4x4& mModelview,
                   st_float32    fNearClip,
                   st_float32    fFarClip);

When I set following parameters from Torque engine it does not render anything:

vcameraPos - state->getCameraPosition ()
mProjection - GFX->getProjectionMatrix ()
mModelview - GFX->getViewMatrix ()
fNearClip - state->getFrustum().getNearDist ()
fFarClip - state->getFrustum().getFarDist ()

I do not know which coordinate system Torque uses. I tried to set following coordinate systems which SpeedTree supports as default.


So I tried to create projection and modelView manually (in RenderObjectExample::render function):

const Vec3 vOrigin;
Vec3 vEye = state->getVectorEye();
Vec3 vCameraPos = state->getCameraPosition ();

Mat4x4 mModelviewMatrix;
if(IsReflectPass())
	mModelviewMatrix.LookAt(vOrigin, Vec3(vEye.x, -vEye.y, vEye.z), CCoordSys::ConvertFromStd(0.0, 0.0, -1.0));
else
	mModelviewMatrix.LookAt(vOrigin, vEye, CCoordSys::ConvertFromStd(0.0, 0.0, 1.0));
mModelviewMatrix.Translate(-vCameraPos.x, -vCameraPos.y, -vCameraPos.z);

Mat4x4 mProjectionMatrix;
mProjectionMatrix.Perspective(state->getFrustum().getFov (), state->getFrustum().getAspectRatio (), nearClip, farClip);

SpeedTree::CView.Set(vCameraPos, mProjectionMatrix, mModelviewMatrix, nearClip, farClip);

Perspective function in SpeedTree:
[code]
inline void Mat4x4::Perspective(st_float32 fFieldOfView, st_float32 fAspectRatio, st_float32 fNear, st_float32 fFar)
{
Mat4x4 mTemp;

st_float32 f = 1.0f / tan(0.5f * fFieldOfView);

mTemp.m_afSingle[0] = f / fAspectRatio;
mTemp.m_afSingle[5] = f;
mTemp.m_afSingle[10] = (fFar + fNear) / (fNear - fFar);
mTemp.m_afSingle[11] = -1.0f;
mTemp.m_afSingle[14] = 2.0f * fFar * fNear / (fNear - fFar);
mTemp.m_afSingle[15] = 0.0f;

*this = *this * mTemp;
}
[code]

Now trees are rendered but there are errors. If I'm walking, trees are being moved from their position. Also when I look at their top or bottom, they are too high and stretched.


Could someone help me?
Thank you