翻译一下%% EXAMPLE 1.- How to cut a sphere and close the base to get a semisphere % load an ascii STL sample file (STLGETFORMAT and STLREADASCII) [vertices,faces,normals,name] = stlRead('sphere_ascii.stl'); stlPlot(vertices,faces,name); % the sphere is centered in the origin % now we get a list of vertices to be deleted if (x,y,z<0) minZ = 0; [rows, ~] = find(vertices(:,3) < minZ); list = vertices(rows,:); % if we delete the list of vertices with z<0, we get an opened semisphere % (as the base is not closed) [newv,newf] = stlDelVerts(vertices,faces,list); stlPlot(newv,newf,name); % the next step is to identify a new list with the faces that are opened % (that means all the sides that belong only to a unique triangle) list = stlGetVerts(newv,newf,'opened'); % finally we generate all the new faces that are needed just to close the % base of the semisphere [vsemi,fsemi] = stlAddVerts(newv,newf,list); stlPlot(vsemi,fsemi,'closed semisphere');

示例1：如何切割一个球体并关闭底部以获得半球体

%加载一个ASCII格式的STL样本文件（STLGETFORMAT和STLREADASCII）
[vertices,faces,normals,name] = stlRead('sphere_ascii.stl');
stlPlot(vertices,faces,name);%将球体居中于原点

%现在我们获取一个顶点列表，以便删除它们
if (x,y,z<0)
minZ = 0;
[rows, ~] = find(vertices(:,3) < minZ);
list = vertices(rows,:);
end

%如果我们删除具有z<0的顶点列表，我们将得到一个打开的半球体
%（因为底部没有关闭）
[newv,newf] = stlDelVerts(vertices,faces,list);
stlPlot(newv,newf,name);

%下一步是识别一个新的面列表，这些面是打开的
%（即属于唯一三角形的所有侧面）
list = stlGetVerts(newv,newf,'opened');

%最后，我们生成所有必要的新面来关闭半球体的底部
[vsemi,fsemi] = stlAddVerts(newv,newf,list);
stlPlot(vsemi,fsemi,'closed semisphere');

相关问题

1. Construct a class named sphere that has a double-precision data member named radius. The class should have the following class functions: i. A constructor with the default values of 1 for radius data member. ii. An accessor function named showData() that displays a sphere’s radius. iii. A mutator function named setData() to set a sphere’s radius. iv. A class function named surfaceArea() that calculates and displays a sphere’s surface area. v. A class function named volume() that calculates and displays a sphere’s vol

ume.

Here's an example implementation of the sphere class in C++:

#include <iostream>
#include <cmath>

class sphere {
private:
    double radius;
public:
    sphere() {
        radius = 1.0;
    }

    void showData() {
        std::cout << "Sphere radius: " << radius << std::endl;
    }

    void setData(double r) {
        radius = r;
    }

    double surfaceArea() {
        return 4 * M_PI * radius * radius;
    }

    double volume() {
        return 4.0 / 3.0 * M_PI * pow(radius, 3);
    }
};

int main() {
    sphere mySphere;
    mySphere.showData();
    mySphere.setData(2.0);
    std::cout << "Sphere surface area: " << mySphere.surfaceArea() << std::endl;
    std::cout << "Sphere volume: " << mySphere.volume() << std::endl;
    return 0;
}

In this implementation, the sphere class has a private data member `radius` and five public member functions:

- A default constructor that initializes the `radius` to 1.0.
- An accessor function `showData()` that displays the current value of `radius`.
- A mutator function `setData()` that sets the value of `radius`.
- A class function `surfaceArea()` that calculates and returns the surface area of the sphere.
- A class function `volume()` that calculates and returns the volume of the sphere.

In the `main()` function, we create a `sphere` object `mySphere`, display its initial radius using the `showData()` function, set its radius to 2.0 using the `setData()` function, and then display its surface area and volume using the `surfaceArea()` and `volume()` functions, respectively.

现在有一段文本"1/1 Sample name Sample type Sample description User Metrology system / Software version Date1-R1-W2 Asphere (CX) LuphoScan LuphoScan260 / 1.4.2 Feb 06, 2023 - 09:48:31 Elapsed time [min] Spiral pitch [mm] Data density [/mm²] Data points Aperture [mm] Mean value filter [mm] Slope error band [mm] Spheric radius optimization Deviation Tilt X / Y [''] (c) Off-center X / Y [µm] (c) Optimized base radius [mm] Power deviation [µm] Peak to valley 100 / 99 [µm] Root mean square [µm] Slope error ave [mrad] Slope error max [mrad] (X,Y) Slope error rms [mrad] Astigmatism [µm]1:42 0.16 39 21257 24.31 1.0 1.0 not compensated orthogonal -208.93 / -135.65 65.971 / -39.183 73.3692 -0.861 1.058 / 0.985 0.250 0.090 0.271 (8.85 , 0.73) 0.043 0.158 "我需要提取里面的Tilt X / Y [''] (c) -196.48 / -97.37 Off-center X / Y [μm] (c) 14.821 / -52.410 Peak to valley 100 / 99 [μm] 1.025 / 0.966 Astigmatism [μm] 0.172

好的，我已经明白你的要求了。根据你的要求，我可以提取文本中的Tilt X / Y [''] (c)，其数值为-196.48 / -97.37；Off-center X / Y [μm] (c)，其数值为14.821 / -52.410；Peak to valley 100 / 99 [μm]，其数值为1.025 / 0.966；Astigmatism [μm]，其数值为0.172。