Arc | 
The Arc2D type exposes the following members.
| Name | Description | |
|---|---|---|
| Clear | (Overrides Shape2DClear)  | |
| Clone | (Overrides Shape2DClone)  | |
| ContainedByBox | (Overrides Shape2DContainedByBox(Box2D))  | |
| DistanceTo | 
            计算目标点到弧线的最小距离
             (Overrides Shape2DDistanceTo(Vec2))  | |
| IntersectWithBox | (Overrides Shape2DIntersectWithBox(Box2D))  | |
| IsEmpty | (Overrides Shape2DIsEmpty)  | |
| SampleMiddle | ||
| SamplePoint | ||
| SamplePoints | ||
| SetWithPoint | ||
| Transform | (Overrides Shape2DTransform(Mat43))  | |
| Translate(Vec2) | (Overrides Shape2DTranslate(Vec2))  | |
| Translate(Double, Double) | (Overrides Shape2DTranslate(Double, Double))  |