中望cad画圆弧的命令C++
时间: 2023-07-11 21:39:18 浏览: 64
中望CAD画圆弧的命令可以使用C++语言编写,具体代码如下:
```c++
// 定义圆弧的圆心和半径
ads_point center = {0, 0, 0};
double radius = 50.0;
// 定义圆弧的起点和终点
ads_point start = {50, 0, 0};
ads_point end = {0, 50, 0};
// 计算圆弧的起始角度和终止角度
double startAngle = atan2(start.y - center.y, start.x - center.x);
double endAngle = atan2(end.y - center.y, end.x - center.x);
// 将角度转换为弧度
startAngle = startAngle * 180 / PI;
endAngle = endAngle * 180 / PI;
// 绘制圆弧
acedCommandS(RTSTR, "_ARC", RTPOINT, center, RTREAL, radius, RTSTR, "A", RTREAL, startAngle, RTSTR, "A", RTREAL, endAngle, RTNONE);
```
其中,`ads_point`是表示点的结构体,包含三个坐标分量x、y、z。`PI`是圆周率,可以用`3.14159265358979323846`代替。`acedCommandS`函数可以调用中望CAD的命令,第一个参数是命令名,后面的参数是命令需要的参数。
相关问题
中望cad画圆弧C++
中望CAD是一款二次开发友好的CAD软件,可以通过C++语言进行二次开发。下面是使用C++语言在中望CAD中绘制圆弧的代码示例:
```cpp
#include "stdafx.h"
#include "zwsoft.h"
#include "zcad.h"
#include "zdbmain.h"
#include "zdbapserv.h"
#include "zdbents.h"
#include "zdbcurve.h"
#include "zdbboiler.h"
void drawArc()
{
// 定义圆弧的圆心、半径、起始角度、终止角度
AcGePoint3d center(0, 0, 0);
double radius = 10.0;
double startAngle = 0.0;
double endAngle = 180.0;
// 创建圆弧对象
AcDbArc *pArc = new AcDbArc(center, radius, startAngle, endAngle);
// 将圆弧对象添加到当前空间
AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, AcDb::kForWrite);
AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord, AcDb::kForWrite);
pBlockTable->close();
pBlockTableRecord->appendAcDbEntity(pArc);
pBlockTableRecord->close();
// 更新显示
acedCommandS(RTSTR, _T("REGEN"), RTSTR, _T(""), RTNONE);
// 释放内存
delete pArc;
}
```
以上代码创建了一个圆心坐标为(0, 0, 0),半径为10,起始角度为0度,终止角度为180度的圆弧对象,并将其添加到当前空间中进行显示。在实际使用中,需要根据具体情况来确定圆心坐标、半径、起始角度和终止角度等参数。
中望cad的pline命令画圆弧功能用c++代码表示
以下是使用C++代码实现中望CAD的Pline命令画圆弧功能的示例:
```c++
#include <iostream>
#include <cmath>
using namespace std;
// 定义圆弧结构体
struct Arc {
double start_x;
double start_y;
double end_x;
double end_y;
double center_x;
double center_y;
double radius;
double start_angle;
double end_angle;
};
// 计算圆心坐标和半径
Arc calculateArc(double start_x, double start_y, double end_x, double end_y, double radius, int direction) {
Arc arc;
double d = sqrt(pow(end_x - start_x, 2) + pow(end_y - start_y, 2));
double a = asin((end_y - start_y) / d);
double b = acos((start_x - end_x) / (2 * radius));
double c = direction * (a + b);
arc.start_x = start_x;
arc.start_y = start_y;
arc.end_x = end_x;
arc.end_y = end_y;
arc.center_x = start_x + radius * sin(c);
arc.center_y = start_y + radius * cos(c);
arc.radius = radius;
arc.start_angle = atan2(start_y - arc.center_y, start_x - arc.center_x);
arc.end_angle = atan2(end_y - arc.center_y, end_x - arc.center_x);
return arc;
}
int main() {
// 模拟用户输入的起点、终点和半径
double start_x = 0;
double start_y = 0;
double end_x = 5;
double end_y = 5;
double radius = 3;
// 计算圆心坐标和半径
Arc arc = calculateArc(start_x, start_y, end_x, end_y, radius, 1);
// 输出圆心坐标和半径
cout << "Center point: (" << arc.center_x << ", " << arc.center_y << ")" << endl;
cout << "Radius: " << arc.radius << endl;
return 0;
}
```
通过调用calculateArc函数来计算圆心坐标和半径,其中参数包括起点、终点、半径和方向(1表示逆时针,-1表示顺时针),返回值是一个包含圆心坐标和半径等信息的Arc结构体。在主函数中,我们模拟了用户输入的起点、终点和半径,然后调用calculateArc函数来计算圆心坐标和半径,并输出结果。注意,这里只是一个示例,实际应用中还需要考虑更多的因素。