Add/Edit Geometries in mayo

[tjumsl]

First! Thanks for developing the wonderful cad viewer mayo, it it really a very good software!

If possible, coudld you please kindly help to provide some details regarding how geometries can be added / edited in mayo using occ interfaces? This would be helpful for some simple geometry creatations and operations (such as boolen etc).

[HuguesDelorme]

Thanks for the compliment, that's appreciated!
Concerning your question, yes it's 100% possible to add this kind of features for shapes creation.
It should be fairly easy :

1. Create a new class that inherits from Mayo::Command. This base class is declared in src/app/commands_api.h
   To implement this new class(called for example MyCommandCreateBox) have a look at the code of some existing commands(eg CommandMainWidgetToggleFullscreen in src/app/commands_window.h

2. Add your new command in function MainWindow::createCommands() in file src/app/mainwindow.cpp
   Example:

void MainWindow::createCommands()
{
    // ...
    this->addCommand<MyCommandCreateBox>();
}

3. Insert the command into some existing menu item in function MainWindow::createMenus()
   Example:

void MainWindow::createMenus()
{
    // ...
    {   // Tools
        auto menu = m_ui->menu_Tools;
        fnAddAction(menu, CommandSaveViewImage::Name);
        fnAddAction(menu, CommandInspectXde::Name);
        menu->addSeparator();
        fnAddAction(menu, CommandEditOptions::Name);
        menu->addSeparator();
        fnAddAction(menu, MyCommandCreateBox::Name); // <-- YOUR COMMAND ACTION INSERTED HERE
    }

4. Implement function MyCommandCreateBox::execute()
   Example:

void MyCommandCreateBox::execute()
{
    auto guiDoc = this->context()->currentGuiDocument();
    auto doc = guiDoc ? guiDoc->document() : nullptr;
    if (doc) {
        // Create box BREP shape
        const TopoDS_Shape shapeBox = BRepPrimAPI_MakeBox(100, 100, 100).Solid();
        // Declare a label in the XDE structure to store the created shape
        const TDF_Label labelShape = doc->xcaf().shapeTool()->NewShape();
        doc->xcaf().shapeTool()->SetShape(labelShape, shapeBox);
        // Set a name associated to the shape
        TDataStd_Name::Set(labelShape, "MyBox");
        // Add root entity to the document, throws signal Document::signalEntityAdded caught by GuiApplication that
        // will automatically create/add 3D graphics in the corresponding GuiDocument object
        doc->addEntityTreeNode(labelShape); 
    }
}

[HuguesDelorme]

@itsivag
Are you working within GitHub fork of Mayo project? If so you can paste URL here and I will try directly your code

[itsivag]

I'll create one and share

[itsivag]

i think you can edit this fork https://github.com/itsivag/mayo

[HuguesDelorme]

@itsivag
I had a look and it's using the previous version of my code suggestion to @boredumbk (where the sphere shape is "pickable" and leading to unwanted to behavior)
Aside from that it's working as expected, the sphere shape is created and located at the picked position
You will have to investigate, try to put some traces and as I mentionned please check if the mouse coords are correct

[itsivag]

yeah, i used the prev one as i needed the spheres to be pickable but your reply though having a pickable sphere it is spawned on the correct mouse coords but that's not the case for me.In this my cursor is no where near to the sphere