Question

样条线在MxDrawCAD控件下为一个实体类：

class ARXDLL McDbSpline : public  McDbCurve

通过调用

// -------------------------------------------------------------------------
// Summary:
//  构造函数
// -------------------------------------------------------------------------
McDbSpline(void);

初始化，或使用默认的构造函数，如：

	auto Func = []()->McDbSpline * {
		McDbSpline * pEnt = new McDbSpline;

		//设置端点
		McGePoint3dArray vPts;
		vPts.append(McGePoint3d(10, 0, 0));
		vPts.append(McGePoint3d(10, 10, 0));
		vPts.append(McGePoint3d(20, 0, 0));
		vPts.append(McGePoint3d(20, 10, 0));

		//将上面的端点添加到该实体
		pEnt->setFitData(vPts, 0, 0, McGeVector3d(0, 1, 0), McGeVector3d(1, 0, 0));

		return pEnt;
	};

	McGeMatrix3d mMatrix;

	mMatrix.setTranslation(McGeVector3d(0, 0, 0));
	SetEnt<McDbSpline>(256, _T("ByLayer"), Func(), nullptr, [&](McDbSpline * pFuncEnt) {
		pFuncEnt->transformBy(mMatrix);
	});//颜色随层，线型随层

	mMatrix.setTranslation(McGeVector3d(0, 20, 0));
	SetEnt<McDbSpline>(0, _T("ByBlock"), Func(), nullptr, [&](McDbSpline * pFuncEnt) {
		pFuncEnt->transformBy(mMatrix);
	});//颜色随层，线型随层

	mMatrix.setTranslation(McGeVector3d(0, 40, 0));
	SetEnt<McDbSpline>(2, _T("BORDER"), Func(), nullptr, [&](McDbSpline * pFuncEnt) {
		pFuncEnt->transformBy(mMatrix);
	});//颜色随层，线型随层