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218 lines
8.1 KiB
C++
218 lines
8.1 KiB
C++
// Created on: 1999-12-27
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// Created by: Sergey RUIN
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// Copyright (c) 1999-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and / or modify it
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// under the terms of the GNU Lesser General Public version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <TDF_Data.hxx>
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#include <TDF_Label.hxx>
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#include <TNaming_NamedShape.hxx>
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#include <TPrsStd_AISPresentation.hxx>
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#include <TPrsStd_AISViewer.hxx>
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#include <AIS_InteractiveContext.hxx>
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#include <AIS_InteractiveObject.hxx>
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#include <V3d_Viewer.hxx>
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#include <Quantity_NameOfColor.hxx>
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#include <TPrsStd_DriverTable.hxx>
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#include <TPrsStd_NamedShapeDriver.hxx>
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#include <TPrsStd_PlaneDriver.hxx>
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#include <TDataXtd_Plane.hxx>
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// ====================================================================================
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// This sample contains template for typical actions with OCAF visualization attributes
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// ====================================================================================
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#ifdef DEB
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static void Sample()
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{
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// Starting with data framework
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Handle(TDF_Data) DF = new TDF_Data();
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TDF_Label aLabel = DF->Root();
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//----------------------------------- TPrsStd_AISViewer ----------------------------------------
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//==============================================================================================
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// Setting the TPrsStd_AISViewer in the framework
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Handle(V3d_Viewer) aViewer;
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//... Initialization of aViewer
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//Creating the new AIS_InteractiveContext
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Handle(AIS_InteractiveContext) ctx = new AIS_InteractiveContext(aViewer);
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//Creating the new TPrsStd_AISViewer attribute initialized with AIS_InteractiveContext
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Handle(TPrsStd_AISViewer) aisviewer;
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if( !TPrsStd_AISViewer::Has(aLabel) ) { //Check if there has already been set TPrsStd_AISViewer in the framework
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aisviewer = TPrsStd_AISViewer::New(aLabel, ctx);
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}
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//Finding TPrsStd_AISViewer attribute in the DataFramework
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if( TPrsStd_AISViewer::Find(aLabel, aisviewer) ) {
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aisviewer->Update(); //Update the viewer associated with this attribute
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}
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//Getting AIS_InteractiveContext from TPrsStd_AISViewer may be done in two ways:
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//1. If we have already gotten TPrsStd_AISViewer attribute (stored in a variable <aisviewer>)
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Handle(AIS_InteractiveContext) context1 = aisviewer->GetInteractiveContext();
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//2. Getting AIS_InteractiveContext directly
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Handle(AIS_InteractiveContext) context2;
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if( TPrsStd_AISViewer::Find(aLabel, context2) ) {
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//do something...
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}
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//----------------------------------- TPrsStd_Driver and TPrsStd_DriverTable -------------------
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//==============================================================================================
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// All work for building AIS_InteractiveObject to be presented by TPrsStd_AISPresentation is done
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// by drivers which are descendants of deferred class TPrsStd_Driver
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// There is a map of drivers with Standard_GUID as a key.
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// Adding driver to the map of drivers
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Handle(TPrsStd_NamedShapeDriver) NSDriver = new TPrsStd_NamedShapeDriver();
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Handle(TPrsStd_DriverTable) table = TPrsStd_DriverTable::Get();
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Standard_GUID guid = TNaming_NamedShape::GetID();
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table->AddDriver(guid, NSDriver);
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// When the first time called TPrsStd_DriverTable loads standard drivers defined in TPrsStd package
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// Getting driver from the map of drivers
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Standard_GUID driverguid = TNaming_NamedShape::GetID();
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Handle(TPrsStd_NamedShapeDriver) driver;
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if( table->FindDriver(driverguid, driver) )
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std::cout << "Driver was found " << std::endl;
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else
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std::cout << "Driver wasn't found" << std::endl;
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// Driver can be used to build AIS_InteractiveObject for presenting the given label
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Handle(TPrsStd_PlaneDriver) planedriver;
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if( table->FindDriver(TDataXtd_Plane::GetID(), planedriver) ) {
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TDF_Label planelabel;
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// Finding planelabel ...
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Handle(AIS_InteractiveObject) aisobject;
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planedriver->Update(planelabel, aisobject);
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if( !aisobject.IsNull() ) {
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// Do something with aisobject ...
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}
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}
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//----------------------------------- TPrsStd_AISPresentation ----------------------------------
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//==============================================================================================
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TDF_Label ShapeLabel;
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// ... Setting TNaming_NamedShape to <ShapeLabel>
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// Setting the new TPrsStd_AISPresentation to <ShapeLabel>
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// It can be done in two different ways:
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Handle(TPrsStd_AISPresentation) Presentation;
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// 1. By giving to TPrsStd_AISPresentation attribute Standard_GUID of an attribute to be displayed:
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// This GUID will be used to find driver for building AIS_InteractiveObject in the map of drivers
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Presentation = TPrsStd_AISPresentation::Set( ShapeLabel, TNaming_NamedShape::GetID() );
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// 2. Or by giving the attribute itself to TPrsStd_AISPresentation attribute:
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// An ID of attribute will be used to find driver for building AIS_InteractiveObject in the map of drivers
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Handle(TNaming_NamedShape) NS;
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if( ShapeLabel.FindAttribute( TNaming_NamedShape::GetID(), NS) ) {
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Presentation = TPrsStd_AISPresentation::Set( NS );
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}
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// Displaying (recomputation of presentation of attribute is done only if presentation is null)
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Handle(TPrsStd_AISPresentation) PRS;
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if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Display();
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//After call of the method PRS->Display() the presentation of the attribute is marked as displayed in
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//AIS_InteractiveContext but not in viewer, in order to draw the object in viewer last has to be updated
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TPrsStd_AISViewer::Update(ShapeLabel); //Update presentation of the attribute in a viewer's window
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// Erasing
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if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase();
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// The method Erase() marks presentation of attribute as erased in AIS_InteractiveContext;
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// in order to make changes visible in a viewer's window viewer has to be updated
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TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to erase presentation of the attribute in a viewer's window
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//Presentation of the attribute is erased from viewer but
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// stays in AIS_InteractiveContext
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if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) ) PRS->Erase(Standard_True);
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TPrsStd_AISViewer::Update(ShapeLabel);
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//Presentation of the attribute is erased
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//from viewer and removed from AIS_InteractiveContext
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Handle(TPrsStd_AISPresentation) P;
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if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), P) ) {
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// Updating and displaying presentation of the attribute to be displayed
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P->Display(Standard_True);
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TPrsStd_AISViewer::Update(ShapeLabel); //Update presentation of the attribute in a viewer's window
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//Getting Standard_GUID of attribute with which TPrsStd_AISPresentation attribute is associated
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Standard_GUID guid = P->GetDriverGUID();
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//Setting a color to the displayed attribute
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P->SetColor(Quantity_NOC_RED);
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TPrsStd_AISViewer::Update(ShapeLabel); //Update viewer to make changes visible to user
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//Getting transparency the displayed attribute
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Standard_Real transparency = P->Transparency();
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//Getting AIS_InteractiveObject built and stored in the AIS_Presentation attribute
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Handle(AIS_InteractiveObject) AISObject = P->GetAIS();
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}
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// ... Attribute is modified
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//Updating presentation of the attribute in viewer
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if( ShapeLabel.FindAttribute(TPrsStd_AISPresentation::GetID(), PRS) )
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PRS->Update(); //Updates presentation of attribute in AIS_InteractiveContext
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TPrsStd_AISViewer::Update(ShapeLabel); //Updates presentation in viewer
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return;
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}
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#endif
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