fixed point calculation

derBobo · derBobo · commit b84ef0de47c9 · 2021-06-20T12:15:19.000+02:00
diff --git a/src/ImageSharp.Drawing/Shapes/EllipticalArcLineSegment.cs b/src/ImageSharp.Drawing/Shapes/EllipticalArcLineSegment.cs
@@ -134,8 +134,8 @@ private List<PointF> GetDrawingPoints(float start, float end, int depth)
 
         private PointF CalculatePoint(float angle)
         {
-            float x = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) - ((this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + this.center.X);
-            float y = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + ((this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) + this.center.Y);
+            float x = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) - (this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + this.center.X;
+            float y = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + (this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) + this.center.Y;
             return PointF.Transform(new PointF(x, y), this.transformation);
         }
 

Original file line number	Diff line number	Diff line change
`@@ -134,8 +134,8 @@ private List<PointF> GetDrawingPoints(float start, float end, int depth)`
`134`	`134`
`135`	`135`	`private PointF CalculatePoint(float angle)`
`136`	`136`	`{`
`137`		`- float x = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) - ((this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + this.center.X);`
`138`		`- float y = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + ((this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) + this.center.Y);`
	`137`	`+ float x = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) - (this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + this.center.X;`
	`138`	`+ float y = (this.firstRadius * MathF.Sin(MathF.PI * angle / 180) * MathF.Sin(MathF.PI * this.rotation / 180)) + (this.secondRadius * MathF.Cos(MathF.PI * angle / 180) * MathF.Cos(MathF.PI * this.rotation / 180)) + this.center.Y;`
`139`	`139`	`return PointF.Transform(new PointF(x, y), this.transformation);`
`140`	`140`	`}`
`141`	`141`