155 lines
5.5 KiB
C++
155 lines
5.5 KiB
C++
/***************************************************************************
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* Copyright (c) 2011 Luke Parry *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <Inventor/actions/SoGetMatrixAction.h>
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# include <Inventor/actions/SoGLRenderAction.h>
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# include <Inventor/actions/SoCallbackAction.h>
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# include <Inventor/actions/SoPickAction.h>
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# include <Inventor/actions/SoGetBoundingBoxAction.h>
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# include <Inventor/actions/SoGetPrimitiveCountAction.h>
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# include <Inventor/elements/SoModelMatrixElement.h>
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# include <Inventor/elements/SoViewportRegionElement.h>
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# include <Inventor/elements/SoViewVolumeElement.h>
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# include <Inventor/nodes/SoCamera.h>
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#endif
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#include "SoAutoZoomTranslation.h"
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using namespace Gui;
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// ------------------------------------------------------
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SO_NODE_SOURCE(SoAutoZoomTranslation)
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void SoAutoZoomTranslation::initClass()
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{
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SO_NODE_INIT_CLASS(SoAutoZoomTranslation, SoTransformation, "AutoZoom");
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// Enable elements for SoGetMatrixAction (#0002268)
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// SoCamera::initClass() enables the SoViewVolumeElement for
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// * SoGLRenderAction
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// * SoGetBoundingBoxAction
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// * SoRayPickAction
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// * SoCallbackAction
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// * SoGetPrimitiveCountAction
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// The element SoViewportRegionElement is enabled by the
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// above listed actions.
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// Additionally, SoViewVolumeElement is enabled for
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// * SoAudioRenderAction
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// * SoHandleEventAction
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// And SoViewportRegionElement is enabled for
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// * SoHandleEventAction
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// * SoGetMatrixAction
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SO_ENABLE(SoGetMatrixAction, SoViewVolumeElement);
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}
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float SoAutoZoomTranslation::getScaleFactor(SoAction* action) const
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{
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float scale = scaleFactor.getValue();
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if(!scale)
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return 1.0;
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// Dividing by 5 seems to work well
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SbViewVolume vv = SoViewVolumeElement::get(action->getState());
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float aspectRatio = SoViewportRegionElement::get(action->getState()).getViewportAspectRatio();
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scale *= vv.getWorldToScreenScale(SbVec3f(0.f, 0.f, 0.f), 0.1f) / (5*aspectRatio);
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return scale;
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}
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SoAutoZoomTranslation::SoAutoZoomTranslation()
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{
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SO_NODE_CONSTRUCTOR(SoAutoZoomTranslation);
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SO_NODE_ADD_FIELD(scaleFactor, (1.0f));
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//SO_NODE_ADD_FIELD(abPos, (SbVec3f(0.f,0.f,0.f)));
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}
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void SoAutoZoomTranslation::GLRender(SoGLRenderAction * action)
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{
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SoAutoZoomTranslation::doAction(static_cast<SoAction *>(action));
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inherited::GLRender(action);
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}
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// Doc in superclass.
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void SoAutoZoomTranslation::doAction(SoAction * action)
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{
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float sf = this->getScaleFactor(action);
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auto state = action->getState();
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SbRotation r,so;
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SbVec3f s,t;
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SbMatrix matrix = SoModelMatrixElement::get(action->getState()); // clazy:exclude=rule-of-two-soft
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matrix.getTransform(t,r,s,so);
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matrix.multVecMatrix(SbVec3f(0,0,0),t);
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// reset current model scale factor
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matrix.setTransform(t,r,SbVec3f(sf,sf,sf));
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SoModelMatrixElement::set(state,this,matrix);
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}
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// set the auto scale factor.
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//void SoAutoZoomTranslation::setAutoScale(void)
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//{
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// float sf = this->getScaleFactor();
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// //this->enableNotify ( false );
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// scaleFactor.setValue(SbVec3f(sf,sf,sf));
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// //this->enableNotify ( true );
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// //scaleFactor.setDirty (true);
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//
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//}
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void SoAutoZoomTranslation::getMatrix(SoGetMatrixAction * action)
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{
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float sf = this->getScaleFactor(action);
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SbMatrix &m = action->getMatrix();
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SbRotation r,so;
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SbVec3f s,t;
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m.getTransform(t,r,s,so);
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m.multVecMatrix(SbVec3f(0,0,0),t);
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m.setTransform(t,r,SbVec3f(sf,sf,sf));
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action->getInverse() = m.inverse();
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}
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void SoAutoZoomTranslation::callback(SoCallbackAction * action)
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{
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SoAutoZoomTranslation::doAction(static_cast<SoAction*>(action));
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}
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void SoAutoZoomTranslation::getBoundingBox(SoGetBoundingBoxAction * action)
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{
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SoAutoZoomTranslation::doAction(static_cast<SoAction*>(action));
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}
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void SoAutoZoomTranslation::pick(SoPickAction * action)
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{
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SoAutoZoomTranslation::doAction(static_cast<SoAction*>(action));
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}
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// Doc in superclass.
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void SoAutoZoomTranslation::getPrimitiveCount(SoGetPrimitiveCountAction * action)
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{
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SoAutoZoomTranslation::doAction(static_cast<SoAction*>(action));
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}
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