Use non-zero as default intersection rule.

Author: JimBobSquarePants

src/ImageSharp.Drawing/Processing/ShapeOptions.cs

@@ -31,9 +31,9 @@ private ShapeOptions(ShapeOptions source)
     /// <summary>
     /// Gets or sets the rule for calculating intersection points.
     /// <para/>
-    /// Defaults to <see cref="IntersectionRule.EvenOdd"/>.
+    /// Defaults to <see cref="IntersectionRule.NonZero"/>.
     /// </summary>
-    public IntersectionRule IntersectionRule { get; set; } = IntersectionRule.EvenOdd;
+    public IntersectionRule IntersectionRule { get; set; } = IntersectionRule.NonZero;
 
     /// <inheritdoc/>
     public ShapeOptions DeepClone() => new(this);

tests/ImageSharp.Drawing.Tests/Processing/ShapeOptionsDefaultsExtensionsTests.cs

@@ -94,11 +94,13 @@ public void GetDefaultOptionsFromConfiguration_SettingNullThenReturnsNewInstance
         Configuration config = new();
 
         ShapeOptions options = config.GetShapeOptions();
+        Assert.Equal(IntersectionRule.NonZero, options.IntersectionRule);
         Assert.NotNull(options);
         config.SetShapeOptions((ShapeOptions)null);
 
         ShapeOptions options2 = config.GetShapeOptions();
         Assert.NotNull(options2);
+        Assert.Equal(IntersectionRule.NonZero, options2.IntersectionRule);
 
         // we set it to null should now be a new instance
         Assert.NotEqual(options, options2);
@@ -123,6 +125,7 @@ public void GetDefaultOptionsFromConfiguration_AlwaysReturnsInstance()
         Assert.DoesNotContain(typeof(ShapeOptions), config.Properties.Keys);
         ShapeOptions options = config.GetShapeOptions();
         Assert.NotNull(options);
+        Assert.Equal(IntersectionRule.NonZero, options.IntersectionRule);
     }
 
     [Fact]
@@ -143,6 +146,7 @@ public void GetDefaultOptionsFromProcessingContext_AlwaysReturnsInstance()
 
         ShapeOptions ctxOptions = context.GetShapeOptions();
         Assert.NotNull(ctxOptions);
+        Assert.Equal(IntersectionRule.NonZero, ctxOptions.IntersectionRule);
     }
 
     [Fact]
@@ -154,6 +158,7 @@ public void GetDefaultOptionsFromProcessingContext_AlwaysReturnsInstanceEvenIfSe
         context.SetShapeOptions((ShapeOptions)null);
         ShapeOptions ctxOptions = context.GetShapeOptions();
         Assert.NotNull(ctxOptions);
+        Assert.Equal(IntersectionRule.NonZero, ctxOptions.IntersectionRule);
     }
 
     [Fact]