// Created on: 1999-12-27 // Created by: Sergey RUIN // Copyright (c) 1999-1999 Matra Datavision // Copyright (c) 1999-2012 OPEN CASCADE SAS // // The content of this file is subject to the Open CASCADE Technology Public // License Version 6.5 (the "License"). You may not use the content of this file // except in compliance with the License. Please obtain a copy of the License // at http://www.opencascade.org and read it completely before using this file. // // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. // // The Original Code and all software distributed under the License is // distributed on an "AS IS" basis, without warranty of any kind, and the // Initial Developer hereby disclaims all such warranties, including without // limitation, any warranties of merchantability, fitness for a particular // purpose or non-infringement. Please see the License for the specific terms // and conditions governing the rights and limitations under the License. #include #include #include #include #include #include #include #include #include #include #include #include #include // ==================================================================================== // This sample contains template for typical actions with OCAF visualization attributes // ==================================================================================== #ifdef DEB static void Sample() { // Starting with data framework Handle(TDF_Data) DF = new TDF_Data(); TDF_Label aLabel = DF->Root(); //----------------------------------- TPrsStd_AISViewer ---------------------------------------- //============================================================================================== // Setting the TPrsStd_AISViewer in the framework Handle(V3d_Viewer) aViewer; //... Initialization of aViewer //Creating the new AIS_InteractiveContext Handle(AIS_InteractiveContext) ctx = new AIS_InteractiveContext(aViewer); //Creating the new TPrsStd_AISViewer attribute initialized with AIS_InteractiveContext Handle(TPrsStd_AISViewer) aisviewer; if( !TPrsStd_AISViewer::Has(aLabel) ) { //Check if there has already been set TPrsStd_AISViewer in the framework aisviewer = TPrsStd_AISViewer::New(aLabel, ctx); } //Finding TPrsStd_AISViewer attribute in the DataFramework if( TPrsStd_AISViewer::Find(aLabel, aisviewer) ) { aisviewer->Update(); //Update the viewer associated with this attribute } //Getting AIS_InteractiveContext from TPrsStd_AISViewer may be done in two ways: //1. If we have already gotten TPrsStd_AISViewer attribute (strored in a variable ) Handle(AIS_InteractiveContext) context1 = aisviewer->GetInteractiveContext(); //2. Getting AIS_InteractiveContext directly Handle(AIS_InteractiveContext) context2; if( TPrsStd_AISViewer::Find(aLabel, context2) ) { //do something... } //----------------------------------- TPrsStd_Driver and TPrsStd_DriverTable ------------------- //============================================================================================== // All work for building AIS_InteractiveObject to be presented by TPrsStd_AISPresentation is done // by drivers which are descendants of deferred class TPrsStd_Driver // There is a map of drivers with Standard_GUID as a key. // Adding driver to the map of drivers Handle(TPrsStd_NamedShapeDriver) NSDriver = new TPrsStd_NamedShapeDriver(); Handle(TPrsStd_DriverTable) table = TPrsStd_DriverTable::Get(); Standard_GUID guid = TNaming_NamedShape::GetID(); table->AddDriver(guid, NSDriver); // When the first time called TPrsStd_DriverTable loads standard drivers defined in TPrsStd package // Getting driver from the map of drivers Standard_GUID driverguid = TNaming_NamedShape::GetID(); Handle(TPrsStd_NamedShapeDriver) driver; if( table->FindDriver(driverguid, driver) ) cout << "Driver was found " << endl; else cout << "Driver wasn't found" << endl; // Driver can be used to build AIS_InteractiveObject for presenting the given label Handle(TPrsStd_PlaneDriver) planedriver; if( table->FindDriver(TDataXtd_Plane::GetID(), planedriver) ) { TDF_Label planelabel; // Finding planelabel ... Handle(AIS_InteractiveObject) aisobject; planedriver->Update(planelabel, aisobject); if( !aisobject.IsNull() ) { // Do something with aisobject ... } } //----------------------------------- TPrsStd_AISPresentation ---------------------------------- //============================================================================================== TDF_Label ShapeLabel; // ... Setting TNaming_NamedShape to // Setting the new TPrsStd_AISPresentation to // It can be done in two different ways: Handle(TPrsStd_AISPresentation) Presenation; // 1. By giving to TPrsStd_AISPresentation attribute Standard_GUID of an attribute to be displayed: // This GUID will be used to find driver for building AIS_InteractiveObject in the map of drivers Presenation = TPrsStd_AISPresentation::Set( ShapeLabel, TNaming_NamedShape::GetID() ); // 2. Or by giving the attribute itself to TPrsStd_AISPresentation attribute: // An ID of attribute will be used to find driver for building AIS_InteractiveObject in the map of drivers Handle(TNaming_NamedShape) NS; if( ShapeLabel.FindAttribute( TNaming_NamedShape::GetID(), NS) ) { Presenation = TPrsStd_AISPresentation::Set( NS ); } // Displaying (recomputation of presentation of attribute is done only if presentation is null) Handle(TPrsStd_AISPresentation) PRS; if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Display(); //After call of the method PRS->Display() the presentation of the attribute is marked as displayed in //AIS_InteractiveContext but not in viewer, in order to draw the object in viewer last has to be updated TPrsStd_AISViewer::Update(ShapeLabel); //Update presentation of the attribute in a viewer's window // Erasing if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase(); // The method Erase() marks presentation of attribute as erased in AIS_InteractiveContext; // in order to make changes visible in a viewer's window viewer has to be updated TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to erase presenation of the attribute in a viewer's window //Presentation of the attribute is erased from viewer but // stays in AIS_InteractiveContext if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase(Standard_True); TPrsStd_AISViewer::Update(ShapeLabel); //Presentation of the attribute is erased //from viewer and removed from AIS_InteractiveContext Handle(TPrsStd_AISPresentation) P; if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), P) ) { // Updating and displaying presentation of the attribute to be displayed P->Display(Standard_True); TPrsStd_AISViewer::Update(ShapeLabel); //Update presenation of the attribute in a viewer's window //Getting Standard_GUID of attribute with which TPrsStd_AISPresentation attribute is associeted Standard_GUID guid = P->GetDriverGUID(); //Setting a color to the displayd attribute P->SetColor(Quantity_NOC_RED); TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to make changes visible to user //Getting transparency the displayd attribute Standard_Real transparency = P->Transparency(); //Getting AIS_InteractiveObject built and stored in the AIS_Presentation attribute Handle(AIS_InteractiveObject) AISObject = P->GetAIS(); } // ... Attribute is modified //Updating presentation of the attribute in viewer if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Update(); //Updates presentation of attribute in AIS_InteractiveContext TPrsStd_AISViewer::Update(ShapeLabel); //Updates presentation in viewer return; } #endif