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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <svx/e3dsceneupdater.hxx>
#include <drawinglayer/geometry/viewinformation3d.hxx>
#include <svx/obj3d.hxx>
#include <svx/scene3d.hxx>
#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
//////////////////////////////////////////////////////////////////////////////
E3DModifySceneSnapRectUpdater::E3DModifySceneSnapRectUpdater(const SdrObject* pObject)
: mpScene(0),
mpViewInformation3D(0)
{
// Secure old 3D transformation stack before modification
if(pObject)
{
const E3dObject* pE3dObject = dynamic_cast< const E3dObject* >(pObject);
if(pE3dObject)
{
mpScene = pE3dObject->GetScene();
if(mpScene && mpScene->GetScene() == mpScene)
{
// if there is a scene and it's the outmost scene, get current 3D range
const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(mpScene->GetViewContact());
const basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
if(aAllContentRange.isEmpty())
{
// no content, nothing to do
mpScene = 0;
}
else
{
// secure current 3D transformation stack
mpViewInformation3D = new drawinglayer::geometry::ViewInformation3D(rVCScene.getViewInformation3D(aAllContentRange));
}
}
}
}
}
E3DModifySceneSnapRectUpdater::~E3DModifySceneSnapRectUpdater()
{
if(mpScene && mpViewInformation3D)
{
// after changing parts of the scene, use the secured last 3d transformation stack and the new content
// range to calculate a new, eventually expanded or shrunk, 2D geometry for the scene and apply it.
// Get new content range
const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(mpScene->GetViewContact());
basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
// only change when there is still content; else let scene stay at old SnapRect
if(!aAllContentRange.isEmpty())
{
// check if object transform of scene has changed
if(mpViewInformation3D->getObjectTransformation() != mpScene->GetTransform())
{
// If Yes, it needs to be updated since it's - for historical reasons -
// part of the basic 3d transformation stack of the scene
drawinglayer::geometry::ViewInformation3D* pNew = new drawinglayer::geometry::ViewInformation3D(
mpScene->GetTransform(), // replace object transformation with new local transform
mpViewInformation3D->getOrientation(),
mpViewInformation3D->getProjection(),
mpViewInformation3D->getDeviceToView(),
mpViewInformation3D->getViewTime(),
mpViewInformation3D->getExtendedInformationSequence());
delete mpViewInformation3D;
mpViewInformation3D = pNew;
}
// transform content range to scene-relative coordinates using old 3d transformation stack
aAllContentRange.transform(mpViewInformation3D->getObjectToView());
// build 2d relative content range
basegfx::B2DRange aSnapRange(
aAllContentRange.getMinX(), aAllContentRange.getMinY(),
aAllContentRange.getMaxX(), aAllContentRange.getMaxY());
// transform to 2D world coordiantes using scene's 2D transformation
aSnapRange.transform(rVCScene.getObjectTransformation());
// snap to (old) integer
const Rectangle aNewSnapRect(
sal_Int32(floor(aSnapRange.getMinX())), sal_Int32(floor(aSnapRange.getMinY())),
sal_Int32(ceil(aSnapRange.getMaxX())), sal_Int32(ceil(aSnapRange.getMaxY())));
// set as new SnapRect and invalidate bound volume
if(mpScene->GetSnapRect() != aNewSnapRect)
{
mpScene->SetSnapRect(aNewSnapRect);
mpScene->InvalidateBoundVolume();
}
}
}
delete mpViewInformation3D;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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