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CornerTreatment A basic corner treatment (a single point which does not affect the shape). 
CutCornerTreatment A corner treatment which cuts or clips the original corner of a shape with a straight line. 
EdgeTreatment A basic edge treatment (a single straight line). 
InterpolateOnScrollPositionChangeHelper Helper class to handle shape interpolation when shaped views enter or exit the window. 
MaterialShapeDrawable Base drawable class for Material Shapes that handles shadows, elevation, scale and color for a generated path. 
RoundedCornerTreatment A corner treatment which rounds a corner of a shape. 
ShapePath Represents the descriptive path of a shape. 
ShapePath.PathArcOperation Path arc operation. 
ShapePath.PathLineOperation Straight line operation. 
ShapePath.PathOperation Interface for a path operation to be appended to the operations list. 
ShapePath.PathQuadOperation Path quad operation. 
ShapePathModel This class models the edges and corners of a shape, which are used by MaterialShapeDrawable to generate and render the shape for a view's background. 
TriangleEdgeTreatment An edge treatment which draws triangles at the midpoint of an edge, facing into or out of the shape.