SDK的help上面有 arc 的构造函数是这样的,我想应该就像你说的那样的吧
(圆心点,半径,起始角度,终止角度)
AcDbArc(
const AcGePoint3d& center,
double radius,
double startAngle,
double endAngle);
center |
Input the center point of the arc |
radius |
Input the radius of the arc |
startAngle |
Input the starting angle of the arc |
endAngle |
Input the ending angle of the arc |
This constructor creates an arc using the values passed in. center must be in WCS coordinates. The arc is initialized with a normal of (0,0,1) and a thickness of 0.0. |