Open CASCADE学习|BrepOffsetAPI_ThruSections无法放样成Solid

老歌老听老掉牙2024-04-12 21:31

目录

1、边界线（TopoDS_Wire）不在一个平面上时，无法生成Solid

2、边界线（TopoDS_Wire）在一个平面上时，可以生成Solid

3、边界线（TopoDS_Wire）不在一个平面上时，添加TopoDS_Vertex后生成Solid

在Open CASCADE Technology (OCCT) 中，BRepOffsetAPI_ThruSections 类是用来通过放样生成一个实体或者一个面壳（Shell）。当使用这个类时，isSolid 参数决定了生成的是实体（TopoDS_Solid）还是面壳（TopoDS_Shell）。如果isSolid为true，则尝试生成实体；如果为false，则生成面壳。

然而，当两个边界线（TopoDS_Wire）不在一个平面上时，使用BRepOffsetAPI_ThruSections 可能会遇到问题，因为放样过程通常需要在一个连续的平面或者空间曲线上进行。

1、边界线（TopoDS_Wire）不在一个平面上时，无法生成Solid

cpp 复制代码 
#include <gp_Ax2.hxx>
#include <gp_Circ.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepOffsetAPI_ThruSections.hxx>
​
#include"Viewer.h"
​
int main(int argc, char* argv[])
{
    gp_Dir  Z(0.0, 0.0, 1.0);
    gp_Pnt center(0, 0, 0.0);
    gp_Pnt xr(0.5, 0, 0.0);
    gp_Pnt yr(0.0, 1.0, 0.0);
    gp_Pnt zr(0.0, 0.0, 7.0);
    gp_Ax2  wb(center, Z);
    gp_Circ  wbcircle(wb, 0.125 / 2);
    TopoDS_Edge wbe = BRepBuilderAPI_MakeEdge(wbcircle);
    TopoDS_Edge xline = BRepBuilderAPI_MakeEdge(center, xr);
    TopoDS_Edge yline = BRepBuilderAPI_MakeEdge(center, yr);
    TopoDS_Edge zline = BRepBuilderAPI_MakeEdge(center, zr);
​
    // test
    TopoDS_Edge L1 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(1.0, 0.0, 0.5));
    TopoDS_Edge L2 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 0.5), gp_Pnt(1.0, 1.0, 0.0));
    TopoDS_Edge L3 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 0.0), gp_Pnt(0.0, 1.0, 0.5));
    TopoDS_Edge L4 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 0.5), gp_Pnt(0.0, 0.0, 0.0));
    BRepBuilderAPI_MakeWire mkWire_L;
    mkWire_L.Add(L1);
    mkWire_L.Add(L2);
    mkWire_L.Add(L3);
    mkWire_L.Add(L4);
    TopoDS_Wire Wire_L = mkWire_L.Wire();
​
    TopoDS_Edge L11 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 1.0), gp_Pnt(1.0, 0.0, 1.0));
    TopoDS_Edge L12 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 1.0), gp_Pnt(1.0, 1.0, 1.0));
    TopoDS_Edge L13 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 1.0), gp_Pnt(0.0, 1.0, 1.0));
    TopoDS_Edge L14 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 1.0), gp_Pnt(0.0, 0.0, 1.0));
    BRepBuilderAPI_MakeWire mkWire_U;
    mkWire_U.Add(L11);
    mkWire_U.Add(L12);
    mkWire_U.Add(L13);
    mkWire_U.Add(L14);
    TopoDS_Wire Wire_U = mkWire_U.Wire();
​
    BRepOffsetAPI_ThruSections mk_solid(Standard_True);
    mk_solid.AddWire(Wire_L);
    mk_solid.AddWire(Wire_U);
    TopoDS_Shape Solid_Test = mk_solid.Shape();
​
​
    Viewer vout(50, 50, 500, 500);
    vout << wbe;
    vout << xline;
    vout << yline;
    vout << zline;
    vout << Solid_Test;
    vout.StartMessageLoop();
    return 0;
}
​

2、边界线（TopoDS_Wire）在一个平面上时，可以生成Solid

cpp 复制代码 
#include <gp_Ax2.hxx>
#include <gp_Circ.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepOffsetAPI_ThruSections.hxx>
​
#include"Viewer.h"
​
int main(int argc, char* argv[])
{
    gp_Dir  Z(0.0, 0.0, 1.0);
    gp_Pnt center(0, 0, 0.0);
    gp_Pnt xr(0.5, 0, 0.0);
    gp_Pnt yr(0.0, 1.0, 0.0);
    gp_Pnt zr(0.0, 0.0, 7.0);
    gp_Ax2  wb(center, Z);
    gp_Circ  wbcircle(wb, 0.125 / 2);
    TopoDS_Edge wbe = BRepBuilderAPI_MakeEdge(wbcircle);
    TopoDS_Edge xline = BRepBuilderAPI_MakeEdge(center, xr);
    TopoDS_Edge yline = BRepBuilderAPI_MakeEdge(center, yr);
    TopoDS_Edge zline = BRepBuilderAPI_MakeEdge(center, zr);
​
    // test
    TopoDS_Edge L1 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(1.0, 0.0, 0.0));
    TopoDS_Edge L2 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 0.0), gp_Pnt(1.0, 1.0, 0.0));
    TopoDS_Edge L3 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 0.0), gp_Pnt(0.0, 1.0, 0.0));
    TopoDS_Edge L4 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 0.0), gp_Pnt(0.0, 0.0, 0.0));
    BRepBuilderAPI_MakeWire mkWire_L;
    mkWire_L.Add(L1);
    mkWire_L.Add(L2);
    mkWire_L.Add(L3);
    mkWire_L.Add(L4);
    TopoDS_Wire Wire_L = mkWire_L.Wire();
​
    TopoDS_Edge L11 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 1.0), gp_Pnt(1.0, 0.0, 1.0));
    TopoDS_Edge L12 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 1.0), gp_Pnt(1.0, 1.0, 1.0));
    TopoDS_Edge L13 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 1.0), gp_Pnt(0.0, 1.0, 1.0));
    TopoDS_Edge L14 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 1.0), gp_Pnt(0.0, 0.0, 1.0));
    BRepBuilderAPI_MakeWire mkWire_U;
    mkWire_U.Add(L11);
    mkWire_U.Add(L12);
    mkWire_U.Add(L13);
    mkWire_U.Add(L14);
    TopoDS_Wire Wire_U = mkWire_U.Wire();
​
    BRepOffsetAPI_ThruSections mk_solid(Standard_True);
    mk_solid.AddWire(Wire_L);
    mk_solid.AddWire(Wire_U);
    TopoDS_Shape Solid_Test = mk_solid.Shape();
​
    Viewer vout(50, 50, 500, 500);
    vout << wbe;
    vout << xline;
    vout << yline;
    vout << zline;
    vout << Solid_Test;
    vout.StartMessageLoop();
    return 0;
}
​

3、边界线（TopoDS_Wire）不在一个平面上时，添加TopoDS_Vertex后生成Solid

cpp 复制代码 
#include <gp_Ax2.hxx>
#include <gp_Circ.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepOffsetAPI_ThruSections.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>

#include"Viewer.h"

int main(int argc, char* argv[])
{
    gp_Dir  Z(0.0, 0.0, 1.0);
    gp_Pnt center(0, 0, 0.0);
    gp_Pnt xr(0.5, 0, 0.0);
    gp_Pnt yr(0.0, 1.0, 0.0);
    gp_Pnt zr(0.0, 0.0, 7.0);
    gp_Ax2  wb(center, Z);
    gp_Circ  wbcircle(wb, 0.125 / 2);
    TopoDS_Edge wbe = BRepBuilderAPI_MakeEdge(wbcircle);
    TopoDS_Edge xline = BRepBuilderAPI_MakeEdge(center, xr);
    TopoDS_Edge yline = BRepBuilderAPI_MakeEdge(center, yr);
    TopoDS_Edge zline = BRepBuilderAPI_MakeEdge(center, zr);

    // test
    TopoDS_Edge L1 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 0.0), gp_Pnt(1.0, 0.0, 0.5));
    TopoDS_Edge L2 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 0.5), gp_Pnt(1.0, 1.0, 0.0));
    TopoDS_Edge L3 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 0.0), gp_Pnt(0.0, 1.0, 0.5));
    TopoDS_Edge L4 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 0.5), gp_Pnt(0.0, 0.0, 0.0));
    TopoDS_Vertex vL = BRepBuilderAPI_MakeVertex(gp_Pnt(0.5, 0.5, 0.2));
    BRepBuilderAPI_MakeWire mkWire_L;
    mkWire_L.Add(L1);
    mkWire_L.Add(L2);
    mkWire_L.Add(L3);
    mkWire_L.Add(L4);
    TopoDS_Wire Wire_L = mkWire_L.Wire();

    TopoDS_Edge L11 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 0.0, 1.0), gp_Pnt(1.0, 0.0, 1.0));
    TopoDS_Edge L12 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 0.0, 1.0), gp_Pnt(1.0, 1.0, 1.0));
    TopoDS_Edge L13 = BRepBuilderAPI_MakeEdge(gp_Pnt(1.0, 1.0, 1.0), gp_Pnt(0.0, 1.0, 1.0));
    TopoDS_Edge L14 = BRepBuilderAPI_MakeEdge(gp_Pnt(0.0, 1.0, 1.0), gp_Pnt(0.0, 0.0, 1.0));
    TopoDS_Vertex vU = BRepBuilderAPI_MakeVertex(gp_Pnt(0.5, 0.5, 1.));
    BRepBuilderAPI_MakeWire mkWire_U;
    mkWire_U.Add(L11);
    mkWire_U.Add(L12);
    mkWire_U.Add(L13);
    mkWire_U.Add(L14);
    TopoDS_Wire Wire_U = mkWire_U.Wire();

    BRepOffsetAPI_ThruSections mk_solid(Standard_True);
    mk_solid.AddVertex(vL);
    mk_solid.AddWire(Wire_L);
    mk_solid.AddWire(Wire_U);
    mk_solid.AddVertex(vU);
    TopoDS_Shape Solid_Test = mk_solid.Shape();

    Viewer vout(50, 50, 500, 500);
    vout << wbe;
    vout << xline;
    vout << yline;
    vout << zline;
    vout << Solid_Test;
    vout.StartMessageLoop();
    return 0;
}
相关推荐
序属秋秋秋44 分钟前
《C++初阶之内存管理》【内存分布 + operator new/delete + 定位new】
开发语言·c++·笔记·学习
许白掰1 小时前
Linux入门篇学习——Linux 工具之 make 工具和 makefile 文件
linux·运维·服务器·前端·学习·编辑器
B1nna2 小时前
Docker学习
学习·docker·容器
promising-w8 小时前
【运算放大器专题】基础篇
嵌入式硬件·学习
宝山哥哥8 小时前
网络信息安全学习笔记1----------网络信息安全概述
网络·笔记·学习·安全·网络安全
前端开发与ui设计的老司机8 小时前
从UI设计到数字孪生实战：构建智慧教育的个性化学习平台
学习·ui
X Y O8 小时前
神经网络初步学习3——数据与损失
人工智能·神经网络·学习
十秒耿直拆包选手8 小时前
Qt：主窗体（QMainwindow）初始化注意事项
c++·qt
霖0010 小时前
C++学习笔记三
运维·开发语言·c++·笔记·学习·fpga开发
mit6.82410 小时前
[shad-PS4] Vulkan渲染器 | 着色器_重新编译器 | SPIR-V 格式
c++·游戏引擎·ps4
热门推荐
01KGG转MP3工具|非KGM文件|解密音频02集群聊天服务器---MySQL数据库的建立03Coze扣子平台完整体验和实践（附国内和国际版对比）04Ubuntu环境下统计进程资源利用率05使用Ruby接入实时行情API教程06扣子（coze）实战|我用扣子搭建了一个自动分析小红薯笔记内容的AI应用|详细步骤拆解07深度神经网络训练过程与常见概念08Java学习第十五部分——MyBatis09DeepSeek各版本说明与优缺点分析10浅谈几种js设计模式