Open CASCADE C++ 是一个用于 3D 实体建模、工程设计和仿真等领域的强大软件库。在 Open CASCADE 中,可以使用几何约束来定义和处理三维模型的几何关系。
以下是一些建议的步骤来处理几何约束:
#include <BRepBuilderAPI_MakeFace.hxx> #include <BRepPrimAPI_MakeBox.hxx> #include <BRepTools.hxx> #include <TopExp_Explorer.hxx> #include <gp_Pnt.hxx> #include <gp_Vec.hxx> #include <TColgp_Array1OfPnt.hxx> #include <TopAbs_ShapeEnum.hxx> #include <BRepAdaptor_Surface.hxx> #include <BRepGEO_SurfaceTool.hxx>
BRepPrimAPI_MakeBox builder(gp_Pnt(0, 0, 0), gp_Vec(1, 1, 1)); TopoDS_Shape shape = builder.Shape();
gp_Pnt point(0.5, 0.5, 0.5); BRepBuilderAPI_MakeFace face(BRepGEO_SurfaceTool::MakeSurface(BRepAdaptor_Surface(shape))); BRepBuilderAPI_MakeBox alignedBox(gp_Pnt(0, 0, 0), gp_Vec(1, 1, 1)); alignedBox.SetLocation(gp_Trsf(gp_Matrix(point))); TopoDS_Shape alignedShape = alignedBox.Shape();
BRepAdaptor_Surface surfaceTool(alignedShape); double distance = surfaceTool.Value(point); if (distance < 1e-6) { std::cout << "The point is aligned with the center of the box." << std::endl; } else { std::cout << "The point is not aligned with the center of the box." << std::endl; }
// Adjust the position of the alignedBox to match the point alignedBox.SetLocation(gp_Trsf(gp_Matrix(point))); alignedShape = alignedBox.Shape();
注意:这些示例仅适用于基本的几何约束。Open CASCADE 提供了许多其他功能,如参数化建模、测量和查询等。要深入了解 Open CASCADE 的功能,请参阅官方文档和教程。