user: Give a detailed overview of _: syntax, arguments, return values, common patterns.

assistant: yle.functions.freestyle.functions.GetSteerableViewMapDensityF1D.__init__)   - [(freestyle.functions.freestyle.functions.GetViewMapGradientNormF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetViewMapGradientNormF0D.__init__)   - [(freestyle.functions.freestyle.functions.GetViewMapGradientNormF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetViewMapGradientNormF1D.__init__)   - [(freestyle.functions.freestyle.functions.GetXF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetXF0D.__init__)   - [(freestyle.functions.freestyle.functions.GetXF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetXF1D.__init__)   - [(freestyle.functions.freestyle.functions.GetYF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetYF0D.__init__)   - [(freestyle.functions.freestyle.functions.GetYF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetYF1D.__init__)   - [(freestyle.functions.freestyle.functions.GetZF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetZF0D.__init__)   - [(freestyle.functions.freestyle.functions.GetZF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.GetZF1D.__init__)   - [(freestyle.functions.freestyle.functions.IncrementChainingTimeStampF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.IncrementChainingTimeStampF1D.__init__)   - [(freestyle.functions.freestyle.functions.LocalAverageDepthF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.LocalAverageDepthF0D.__init__)   - [(freestyle.functions.freestyle.functions.LocalAverageDepthF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.LocalAverageDepthF1D.__init__)   - [(freestyle.functions.freestyle.functions.MaterialF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.MaterialF0D.__init__)   - [(freestyle.functions.freestyle.functions.Normal2DF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.Normal2DF0D.__init__)   - [(freestyle.functions.freestyle.functions.Normal2DF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.Normal2DF1D.__init__)   - [(freestyle.functions.freestyle.functions.Orientation2DF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.Orientation2DF1D.__init__)   - [(freestyle.functions.freestyle.functions.Orientation3DF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.Orientation3DF1D.__init__)   - [(freestyle.functions.freestyle.functions.pyViewMapGradientVectorF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.pyViewMapGradientVectorF0D.__init__)   - [(freestyle.functions.freestyle.functions.QuantitativeInvisibilityF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.QuantitativeInvisibilityF0D.__init__)   - [(freestyle.functions.freestyle.functions.QuantitativeInvisibilityF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.QuantitativeInvisibilityF1D.__init__)   - [(freestyle.functions.freestyle.functions.ReadCompleteViewMapPixelF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ReadCompleteViewMapPixelF0D.__init__)   - [(freestyle.functions.freestyle.functions.ReadMapPixelF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ReadMapPixelF0D.__init__)   - [(freestyle.functions.freestyle.functions.ReadSteerableViewMapPixelF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ReadSteerableViewMapPixelF0D.__init__)   - [(freestyle.functions.freestyle.functions.ShapeIdF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ShapeIdF0D.__init__)   - [(freestyle.functions.freestyle.functions.TimeStampF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.TimeStampF1D.__init__)   - [(freestyle.functions.freestyle.functions.VertexOrientation2DF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.VertexOrientation2DF0D.__init__)   - [(freestyle.functions.freestyle.functions.VertexOrientation3DF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.VertexOrientation3DF0D.__init__)   - [(freestyle.functions.freestyle.functions.ZDiscontinuityF0D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ZDiscontinuityF0D.__init__)   - [(freestyle.functions.freestyle.functions.ZDiscontinuityF1D method)](freestyle.functions.html#freestyle.functions.freestyle.functions.ZDiscontinuityF1D.__init__)   - [(freestyle.predicates.freestyle.predicates.DensityLowerThanUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.DensityLowerThanUP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.EqualToChainingTimeStampUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.EqualToChainingTimeStampUP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.EqualToTimeStampUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.EqualToTimeStampUP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.QuantitativeInvisibilityUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.QuantitativeInvisibilityUP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.ShapeUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.ShapeUP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.ViewMapGradientNormBP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.ViewMapGradientNormBP1D.__init__)   - [(freestyle.predicates.freestyle.predicates.WithinImageBoundaryUP1D method)](freestyle.predicates.html#freestyle.predicates.freestyle.predicates.WithinImageBoundaryUP1D.__init__)   - [(freestyle.shaders.freestyle.shaders.BackboneStretcherShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.BackboneStretcherShader.__init__)   - [(freestyle.shaders.freestyle.shaders.BezierCurveShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.BezierCurveShader.__init__)   - [(freestyle.shaders.freestyle.shaders.BlenderTextureShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.BlenderTextureShader.__init__)   - [(freestyle.shaders.freestyle.shaders.CalligraphicShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.CalligraphicShader.__init__)   - [(freestyle.shaders.freestyle.shaders.ColorNoiseShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.ColorNoiseShader.__init__)   - [(freestyle.shaders.freestyle.shaders.ConstantColorShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.ConstantColorShader.__init__)   - [(freestyle.shaders.freestyle.shaders.ConstantThicknessShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.ConstantThicknessShader.__init__)   - [(freestyle.shaders.freestyle.shaders.ConstrainedIncreasingThicknessShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.ConstrainedIncreasingThicknessShader.__init__)   - [(freestyle.shaders.freestyle.shaders.GuidingLinesShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.GuidingLinesShader.__init__)   - [(freestyle.shaders.freestyle.shaders.IncreasingColorShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.IncreasingColorShader.__init__)   - [(freestyle.shaders.freestyle.shaders.IncreasingThicknessShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.IncreasingThicknessShader.__init__)   - [(freestyle.shaders.freestyle.shaders.PolygonalizationShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.PolygonalizationShader.__init__)   - [(freestyle.shaders.freestyle.shaders.SamplingShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.SamplingShader.__init__)   - [(freestyle.shaders.freestyle.shaders.SmoothingShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.SmoothingShader.__init__)   - [(freestyle.shaders.freestyle.shaders.SpatialNoiseShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.SpatialNoiseShader.__init__)   - [(freestyle.shaders.freestyle.shaders.StrokeTextureStepShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.StrokeTextureStepShader.__init__)   - [(freestyle.shaders.freestyle.shaders.ThicknessNoiseShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.ThicknessNoiseShader.__init__)   - [(freestyle.shaders.freestyle.shaders.TipRemoverShader method)](freestyle.shaders.html#freestyle.shaders.freestyle.shaders.TipRemoverShader.__init__)   - [(freestyle.types.freestyle.types.AdjacencyIterator method)](freestyle.types.html#freestyle.types.freestyle.types.AdjacencyIterator.__init__)   - [(freestyle.types.freestyle.types.BBox method)](freestyle.types.html#freestyle.types.freestyle.types.BBox.__init__)   - [(freestyle.types.freestyle.types.BinaryPredicate0D method)](freestyle.types.html#freestyle.types.freestyle.types.BinaryPredicate0D.__init__)   - [(freestyle.types.freestyle.types.BinaryPredicate1D method)](freestyle.types.html#freestyle.types.freestyle.types.BinaryPredicate1D.__init__)   - [(freestyle.types.freestyle.types.Chain method)](freestyle.types.html#freestyle.types.freestyle.types.Chain.__init__)   - [(freestyle.types.freestyle.types.ChainingIterator method)](freestyle.types.html#freestyle.types.freestyle.types.ChainingIterator.__init__)   - [(freestyle.types.freestyle.types.Curve method)](freestyle.types.html#freestyle.types.freestyle.types.Curve.__init__)   - [(freestyle.types.freestyle.types.CurvePoint method)](freestyle.types.html#freestyle.types.freestyle.types.CurvePoint.__init__)   - [(freestyle.types.freestyle.types.CurvePointIterator method)](freestyle.types.html#freestyle.types.freestyle.types.CurvePointIterator.__init__)   - [(freestyle.types.freestyle.types.FEdgeSharp method)](freestyle.types.html#freestyle.types.freestyle.types.FEdgeSharp.__init__)   - [(freestyle.types.freestyle.types.FEdgeSmooth method)](freestyle.types.html#freestyle.types.freestyle.types.FEdgeSmooth.__init__)   - [(freestyle.types.freestyle.types.Id method)](freestyle.types.html#freestyle.types.freestyle.types.Id.__init__)   - [(freestyle.types.freestyle.types.Interface0D method)](freestyle.types.html#freestyle.types.freestyle.types.Interface0D.__init__)   - [(freestyle.types.freestyle.types.Interface0DIterator method)](freestyle.types.html#freestyle.types.freestyle.types.Interface0DIterator.__init__)   - [(freestyle.types.freestyle.types.Interface1D method)](freestyle.types.html#freestyle.types.freestyle.types.Interface1D.__init__)   - [(freestyle.types.freestyle.types.Iterator method)](freestyle.types.html#freestyle.types.freestyle.types.Iterator.__init__)   - [(freestyle.types.freestyle.types.Material method)](freestyle.types.html#freestyle.types.freestyle.types.Material.__init__)   - [(freestyle.types.freestyle.types.Noise method)](freestyle.types.html#freestyle.types.freestyle.types.Noise.__init__)   - [(freestyle.types.freestyle.types.NonTVertex method)](freestyle.types.html#freestyle.types.freestyle.types.NonTVertex.__init__)   - [(freestyle.types.freestyle.types.orientedViewEdgeIterator method)](freestyle.types.html#freestyle.types.freestyle.types.orientedViewEdgeIterator.__init__)   - [(freestyle.types.freestyle.types.SShape method)](freestyle.types.html#freestyle.types.freestyle.types.SShape.__init__)   - [(freestyle.types.freestyle.types.StrokeAttribute method)](freestyle.types.html#freestyle.types.freestyle.types.StrokeAttribute.__init__)   - [(freestyle.types.freestyle.types.StrokeShader method)](freestyle.types.html#freestyle.types.freestyle.types.StrokeShader.__init__)   - [(freestyle.types.freestyle.types.StrokeVertex method)](freestyle.types.html#freestyle.types.freestyle.types.StrokeVertex.__init__)   - [(freestyle.types.freestyle.types.StrokeVertexIterator method)](freestyle.types.html#freestyle.types.freestyle.types.StrokeVertexIterator.__init__)   - [(freestyle.types.freestyle.types.SVertex method)](freestyle.types.html#freestyle.types.freestyle.types.SVertex.__init__)   - [(freestyle.types.freestyle.types.SVertexIterator method)](freestyle.types.html#freestyle.types.freestyle.types.SVertexIterator.__init__)   - [(freestyle.types.freestyle.types.TVertex method)](freestyle.types.html#freestyle.types.freestyle.types.TVertex.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DDouble method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DDouble.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DEdgeNature method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DEdgeNature.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DFloat method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DFloat.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DId method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DId.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DMaterial method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DMaterial.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DUnsigned method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DUnsigned.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DVec2f method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DVec2f.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DVec3f method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DVec3f.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DVectorViewShape method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DVectorViewShape.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction0DViewShape method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction0DViewShape.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DDouble method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DDouble.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DEdgeNature method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DEdgeNature.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DFloat method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DFloat.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DUnsigned method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DUnsigned.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DVec2f method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DVec2f.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DVec3f method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DVec3f.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DVectorViewShape method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DVectorViewShape.__init__)   - [(freestyle.types.freestyle.types.UnaryFunction1DVoid method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryFunction1DVoid.__init__)   - [(freestyle.types.freestyle.types.UnaryPredicate0D method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryPredicate0D.__init__)   - [(freestyle.types.freestyle.types.UnaryPredicate1D method)](freestyle.types.html#freestyle.types.freestyle.types.UnaryPredicate1D.__init__)   - [(freestyle.types.freestyle.types.ViewEdge method)](freestyle.types.html#freestyle.types.freestyle.types.ViewEdge.__init__)   - [(freestyle.types.freestyle.types.ViewEdgeIterator method)](freestyle.types.html#freestyle.types.freestyle.types.ViewEdgeIterator.__init__)   - [(freestyle.types.freestyle.types.ViewMap method)](freestyle.types.html#freestyle.types.freestyle.types.ViewMap.__init__)   - [(freestyle.types.freestyle.types.ViewShape method)](freestyle.types.html#freestyle.types.freestyle.types.ViewShape.__init__) |