# cee::ug::VisualizationPartQuery

class `VisualizationPartQuery`

  Query for visible nodes, elements or triangles for a given part.

  Public Functions

  `VisualizationPartQuery`(const UnstructGridModel *model, size_t frameIndex, size_t geometryIndex, int partId)

    Constructs a part query object.

  void `visibleNodes`(std::vector<size_t> *visibleNodes)

    Returns an array of indices for visible nodes.

  void `visibleElements`(std::vector<size_t> *elementIndices)

    Returns an array of indices for visible elements.

  void `visibleElementSurfaces`(std::vector<size_t> *elementIndices, std::vector<unsigned char> *surfaceIndices)

    Returns an array of indices for visible elements.

  void `visibleTriangles`(std::vector<unsigned int> *indices)

    Returns an array of indices for visible triangles.

  void `outlineEdges`(std::vector<unsigned int> *edgeSegmentsNodeIndices)

    Gets the outline edges of the part.

    The edgeSegmentsNodeIndices array will contain line segments (with node indices) for the outline edges. Example <0,1,1,2,5,8> is three line segments: <0,1> <1,2> <5,8>

  void `visibleIndexedTriangles`(std::vector<unsigned int> *indices, std::vector<cee::Vec3d> *nodes)

    Gets a compact indexed triangles representation of the model.

    Will return all triangles in this part of the model that is visible in the given frame. The returned nodes are in world coordinates (including any transformations and/or displacements).

  void `visibleIndexedLines`(std::vector<unsigned int> *indices, std::vector<cee::Vec3d> *nodes)

    Gets a compact indexed lines representation of the lines in the model.

    Will return all lines in this part of the model that is visible in the given frame. The returned nodes are in world coordinates (including any transformations and/or displacements).

    Note: Will return empty arrays if no lines in the model.

  void `visiblePoints`(std::vector<cee::Vec3d> *points)

    Gets a compact indexed lines representation of the points in the model.

    Will return all points in this part of the model that is visible in the given frame. The returned points are in world coordinates (including any transformations and/or displacements).

    Note: Will return empty arrays if no points in the model.

  void `visibleNodesNormals`(std::vector<cee::Vec3d> *normals)

    Gets normals for visible triangles.

    Note: Will return empty arrays if no triangles in the model.

  void `visibleNodesTextureCoordinates`(std::vector<cee::Vec2f> *textureCoordinates)

    Gets texture coordinates for visible triangles.

    Note: Will return empty arrays if no triangles in the model.

  void `fringesLegendTextureImage`(Image *image)

    Gets the legends texture image.

  bool `hasTriangles`() const

    Returns true if the part has at least one visible triangle.

  bool `hasLines`() const

    Returns true if the part has at least one visible line.

  bool `hasPoints`() const

    Returns true if the part has at least one visible point.

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