remove IPath.Contains and simplify InnerPath

Author: antonfirsov

src/ImageSharp.Drawing/Shapes/ComplexPolygon.cs

@@ -101,21 +101,6 @@ public ComplexPolygon(params IPath[] paths)
         /// <inheritdoc/>
         public RectangleF Bounds { get; }
 
-        /// <inheritdoc/>
-        public bool Contains(PointF point)
-        {
-            bool inside = false;
-            foreach (IPath shape in this.Paths)
-            {
-                if (shape.Contains(point))
-                {
-                    inside ^= true; // flip the inside flag
-                }
-            }
-
-            return inside;
-        }
-
         /// <inheritdoc/>
         public IPath Transform(Matrix3x2 matrix)
         {

src/ImageSharp.Drawing/Shapes/EllipsePolygon.cs

@@ -90,9 +90,6 @@ public IEnumerable<ISimplePath> Flatten()
             yield return this;
         }
 
-        /// <inheritdoc/>
-        public bool Contains(PointF point) => this.innerPath.PointInPolygon(point);
-
         /// <inheritdoc />
         // TODO switch this out to a calculated algorithm
         SegmentInfo IPathInternals.PointAlongPath(float distance)

src/ImageSharp.Drawing/Shapes/IPath.cs

@@ -27,15 +27,6 @@ public interface IPath
         /// <returns>Returns the current <see cref="IPath" /> as simple linear path.</returns>
         IEnumerable<ISimplePath> Flatten();
 
-        /// <summary>
-        /// Determines whether the <see cref="IPath"/> contains the specified point.
-        /// </summary>
-        /// <param name="point">The point.</param>
-        /// <returns>
-        /// <see langword="true"/> if the <see cref="IPath"/> contains the specified point; otherwise, <see langword="false"/>.
-        /// </returns>
-        bool Contains(PointF point);
-
         /// <summary>
         /// Transforms the path using the specified matrix.
         /// </summary>