# A3DComputeOrthoHLROnModelFile3

A3DStatus `A3DComputeOrthoHLROnModelFile3`(A3DAsmModelFile const *pModelFile, A3DMkpView const *pOptMrkRView, A3DHLRViewPlaneData const *psHLRViewPlaneData, A3DHLROptionsData const *psHLROptionsData, A3DUns32 *pNumberHLRRepItem, A3DHLRRepresentationItem ***ppHLRRepItems)
  `A3DStatus` A3DComputeOrthoHLROnModelFile3(`A3DAsmModelFile`* pModelFile, `A3DMkpView`* pOptMrkRView, `A3DHLRViewPlaneData`* psHLRViewPlaneData, `A3DHLROptionsData`* psHLROptionsData, `A3DUns32`* pNumberHLRRepItem, `A3DHLRRepresentationItem`*** ppHLRRepItems)

  Function to compute Hidden Line Removal on a `A3DAsmModelFile`.

  > 10.1

  Call A3DComputeOrthoHLROnModelFile3(A3D_NULL_HANDLE, A3D_NULL_HANDLE, NULL, NULL, pNumberHLRRepItem, pppHLRRepItem) to release *pppHLRRepItem structure ( internal `A3DCrvPolyLine`*was not released)

  If `pOptMrkRView`is a cutting view, `psSectionParametersData`can be set to `0`. In this case, the cutting planes within `pOptMrkRView`are used for the computation. Planes must to ordered and be set a profile, otherwise the function will return `#A3D_TOOLS_INVALID_SECTION_PLANE`.

  Parameters

  > pModelFile: Model file to work on.

  > pOptMrkRView: optional `A3DMkpView`(cut, filter and/or move entities).

  > psHLRViewPlaneData: define a plane as a camera with orthogonal projection.

  > psHLROptionsData: define options used to compute HLR. if set to NULL, default `A3DHLROptionsData`value are used.

  > pNumberHLRRepItem: Number `A3DHLRRepresentationItem`.

  > ppHLRRepItems: HLR curve result grouped by `A3DRiRepresentationItem`entity. pppHLRRepItem is automatically allocated by A3DComputeOrthoHLROnModelFile3.

  Returns

  > `A3D_SUCCESS`on success, or an error code on failure

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