Thx guest

I managed to have it working , porting that code from Calibration ensemble source.

You can include roomalive dlls into a plugin (the one from proCamEnsembleCalibrationLib) to get the file parsed with ProjectorCameraEnsemble.FromFile() function, it make things easier.

Sorry i can’t share the plugin as it is for my work and not finish anyway, but here is the piece of code who need to be ported:

```
public static SharpDX.Matrix ProjectionMatrixFromCameraMatrix(float fx, float fy, float cx, float cy, float w, float h, float near, float far)
{
// fx, fy, cx, cy are in pixels
// input coordinate sysem is x left, y up, z foward (right handed)
// project to view volume where x, y in [-1, 1](-1, 1), z in [0, 1](0, 1), x right, y up, z forward
// pre-multiply matrix
// -(2 * fx / w), 0, -(2 * cx / w - 1), 0,
// 0, 2 * fy / h, 2 * cy / h - 1, 0,
// 0, 0, far / (far - near), -near * far / (far - near),
// 0, 0, 1, 0
return new SharpDX.Matrix(
-(2 * fx / w), 0, -(2 * cx / w - 1), 0,
0, 2 * fy / h, 2 * cy / h - 1, 0,
0, 0, far / (far - near), -near * far / (far - near),
0, 0, 1, 0
);
}
// could be method on Projector:
void SetViewProjectionFromProjector(ProjectorCameraEnsemble.Projector projector)
{
if [| (projector.cameraMatrix == null](https://vvvv.org/documentation/projector.pose-==-null))
Console.WriteLine("Projector pose/camera matrix not set. Please perform a calibration.");
else
{
// pick up view and projection for a given projector
view = new SharpDX.Matrix();
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
view[i, j](i, j) = (float)projector.pose[i, j](i, j);
view.Invert();
view.Transpose();
var cameraMatrix = projector.cameraMatrix;
float fx = (float)cameraMatrix[0, 0](0, 0);
float fy = (float)cameraMatrix[1, 1](1, 1);
float cx = (float)cameraMatrix[0, 2](0, 2);
float cy = (float)cameraMatrix[1, 2](1, 2);
float near = 0.1f;
float far = 100.0f;
float w = projector.width;
float h = projector.height;
projection = GraphicsTransforms.ProjectionMatrixFromCameraMatrix(fx, fy, cx, cy, w, h, near, far);
projection.Transpose();
}
}
```

Also if you load the obj with assimp dx11 you need to invert z scaling, i struggled with that for quite a while.