DrawChord
矢量图形
描述
绘制圆弧，并以连接圆弧终点和起点的直线弦将其闭合
语法
Delphi
Function TPDFlib.DrawChord(XPos, YPos, Radius, StartAngle, EndAngle: Double; DrawOptions: Integer): Integer;ActiveX
Function PDFlib::DrawChord(XPos As Double, YPos As Double, Radius As Double, StartAngle As Double, EndAngle As Double, DrawOptions As Long) As LongDLL
int DLDrawChord(int InstanceID, double XPos, double YPos, double Radius, double StartAngle, double EndAngle, int DrawOptions);参数
| XPos | 圆心的水平坐标 |
|---|---|
| YPos | 圆心的垂直坐标 |
| Radius | 当前测量单位中的圆弧半径 |
| StartAngle | 以度为单位的起始角度 |
| EndAngle | 以度为单位的终止角度 |
| DrawOptions | 0 = 轮廓；1 = 填充；2 = 填充和轮廓 |
返回值
| 0 | 角度跨度或绘制选项无效 |
|---|---|
| 1 | 已绘制弦路径 |
备注
当形状应通过圆心闭合时，使用 DrawPie