Set Volume Cut Plane

The coefficients of cut plane take the form of the general plane equation. If the values labeled A, B, C, and D, they fit into the general plane equation so that . A voxel with coordinates (x, y, z) is visible in the half space of the plane if Voxels (and subvoxels) that exist behind the clipping plane are clipped from the scene.

//Assign the pointer according to your code
IRenderEngine* piRenderEngine = NULL; 

RENDER_PARAMS rp;
ZEROMEMORY(rp);
rp.cbSize = sizeof(rp);

rp.Mask = RPM_CUT_PLANES;
rp.CutPlanes[0].Status  = CUT_PLANE_STATUS_ENABLED;
rp.CutPlanes[0].Type    = CUT_PLANE_TYPE_POSITIVE;
rp.CutPlanes[0].Plane.a = 0;
rp.CutPlanes[0].Plane.b = 0;
rp.CutPlanes[0].Plane.c = 1;
rp.CutPlanes[0].Plane.d = 128;

if(piRenderEngine != NULL)
{
    hr = piRenderEngine->SetRenderParams(&rp);
    if(FAILED(hr)) return hr;
}