FreeCAD 1.0

A new chapter for free and open-source CAD.

2024年11月19日 1.0 (5)1.0.1 (1)1.0.2 (1)517 字3 分钟

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After more than 20 years of development, the 1.0 release marks a major milestone for the FreeCAD project.

With a strong focus on stability, usability, and long-requested core features, FreeCAD is now more powerful, flexible, extensible, and robust than ever before.

Robust Solid Modeling

注意
FreeCAD now tracks how individual sub-elements (faces, edges, vertices) evolve through modeling operations by building a history map that records whether elements were modified, generated, or deleted. This allows stable references to be maintained even as the underlying topology changes.

The mitigation algorithm to the long-standing topological naming problem has finally been merged
Models now better survive edits without randomly breaking dependencies
Parametric workflows and complex design iterations are far more predictable, resilient, and effective

    
  src/Mod/Part/App/PropertyTopoShape.cpp
void ShapeHistory::reset(
    BRepBuilderAPI_MakeShape& mkShape,
    TopAbs_ShapeEnum type,
    const TopoDS_Shape& newS,
    const TopoDS_Shape& oldS
)
{
    shapeMap.clear();
    this->type = type;

    TopTools_IndexedMapOfShape newM, oldM;
    TopExp::MapShapes(newS, type, newM);  // map with all old objects
    TopExp::MapShapes(oldS, type, oldM);  // map with all new objects

// Look all objects in old shape and find modified object in new shape
    for (int i = 1; i <= oldM.Extent(); i++) {
        bool found = false;
        TopTools_ListIteratorOfListOfShape it;
        // Find all new objects modified from old object (e.g. resized face)
        for (it.Initialize(mkShape.Modified(oldM(i))); it.More(); it.Next()) {
            found = true;
            for (int j = 1; j <= newM.Extent();
                 j++) {  // one old object might create several new ones!
                if (newM(j).IsPartner(it.Value())) {
                    shapeMap[i - 1].push_back(j - 1);
                    break;

// Find all new objects generated from old object (e.g. face generated from edge)
        for (it.Initialize(mkShape.Generated(oldM(i))); it.More(); it.Next()) {
            found = true;
            for (int j = 1; j <= newM.Extent(); j++) {
                if (newM(j).IsPartner(it.Value())) {
                    shapeMap[i - 1].push_back(j - 1);
                    break;

// Find all old objects that don't exist anymore (e.g. face completely cut away)
        if (!found) {
            if (mkShape.IsDeleted(oldM(i))) {
                shapeMap[i - 1] = std::vector<int>();