120ca87015
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
244 lines
7.4 KiB
C++
244 lines
7.4 KiB
C++
/***************************************************************************
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* Copyright (c) 2005 Werner Mayer <wmayer[at]users.sourceforge.net> *
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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 <sstream>
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# include <Inventor/fields/SoMFString.h>
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# include <Inventor/nodes/SoBaseColor.h>
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# include <Inventor/nodes/SoCoordinate3.h>
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# include <Inventor/nodes/SoIndexedFaceSet.h>
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# include <Inventor/nodes/SoMaterial.h>
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# include <Inventor/nodes/SoText2.h>
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# include <Inventor/nodes/SoTransform.h>
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#endif
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#include "SoFCColorLegend.h"
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using namespace Gui;
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SO_NODE_SOURCE(SoFCColorLegend);
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/*!
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Constructor.
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*/
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SoFCColorLegend::SoFCColorLegend() : _fPosX(4.0f), _fPosY(4.0f)
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{
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SO_NODE_CONSTRUCTOR(SoFCColorLegend);
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_cColRamp.setStyle(App::ColorGradient::FLOW);
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coords = new SoCoordinate3;
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coords->ref();
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labels = new SoSeparator;
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labels->ref();
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setColorModel( App::ColorGradient::TRIA );
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setRange(-0.5f,0.5f,1);
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}
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/*!
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Destructor.
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*/
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SoFCColorLegend::~SoFCColorLegend()
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{
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//delete THIS;
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coords->unref();
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labels->unref();
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}
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// doc from parent
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void SoFCColorLegend::initClass(void)
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{
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SO_NODE_INIT_CLASS(SoFCColorLegend,SoFCColorBarBase,"Separator");
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}
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void SoFCColorLegend::finish()
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{
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atexit_cleanup();
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}
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void SoFCColorLegend::setMarkerLabel( const SoMFString& label )
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{
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labels->removeAllChildren();
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int num = label.getNum();
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if ( num > 1 )
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{
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float fStep = 8.0f / ((float)num-1);
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SoTransform* trans = new SoTransform;
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trans->translation.setValue(_fPosX+0.1f,_fPosY-0.05f+fStep,0.0f);
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labels->addChild(trans);
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for ( int i=0; i<num; i++ )
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{
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SoTransform* trans = new SoTransform;
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SoBaseColor* color = new SoBaseColor;
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SoText2 * text2 = new SoText2;
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trans->translation.setValue(0,-fStep,0);
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color->rgb.setValue(0,0,0);
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text2->string.setValue( label[i] );
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labels->addChild(trans);
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labels->addChild(color);
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labels->addChild(text2);
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}
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}
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}
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void SoFCColorLegend::setViewportSize( const SbVec2s& size )
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{
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float fRatio = ((float)size[0])/((float)size[1]);
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float fMinX= 4.0f, fMaxX=4.5f;
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float fMinY= -4.0f, fMaxY=4.0f;
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if ( fRatio > 1.0f )
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{
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fMinX = 4.0f * fRatio;
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fMaxX = fMinX+0.5f;
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}
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else if ( fRatio < 1.0f )
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{
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fMinY = -4.0f / fRatio;
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fMaxY = 4.0f / fRatio;
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}
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_fPosX = fMaxX;
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_fPosY = fMaxY;
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// search for the labels
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int num=0;
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for ( int i=0; i<labels->getNumChildren(); i++ )
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{
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if ( labels->getChild(i)->getTypeId() == SoTransform::getClassTypeId() )
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num++;
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}
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if ( num > 2 )
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{
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bool first=true;
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float fStep = (fMaxY-fMinY) / ((float)num-2);
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for ( int j=0; j<labels->getNumChildren(); j++ )
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{
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if ( labels->getChild(j)->getTypeId() == SoTransform::getClassTypeId() )
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{
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if ( first )
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{
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first = false;
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static_cast<SoTransform*>(labels->getChild(j))->translation.setValue(fMaxX+0.1f,fMaxY-0.05f+fStep,0.0f);
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}
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else
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{
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static_cast<SoTransform*>(labels->getChild(j))->translation.setValue(0,-fStep,0.0f);
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}
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}
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}
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}
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// set the vertices spanning the faces for the color gradient
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int ct = coords->point.getNum()/2;
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for ( int j=0; j<ct; j++ )
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{
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float w = (float)j/(float)(ct-1);
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float fPosY = (1.0f-w)*fMaxY + w*fMinY;
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coords->point.set1Value(2*j, fMinX, fPosY, 0.0f);
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coords->point.set1Value(2*j+1, fMaxX, fPosY, 0.0f);
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}
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}
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void SoFCColorLegend::setRange( float fMin, float fMax, int prec )
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{
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SoMFString label;
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for (int j=0; j<9; j++)
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{
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std::stringstream s;
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s.precision(prec);
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s.setf(std::ios::fixed | std::ios::showpoint | std::ios::showpos);
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float fValue = (1.0f-0.125f*(float)j)*fMax + (0.125f*(float)j)*fMin;
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s << fValue;
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label.set1Value(j, s.str().c_str());
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}
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setMarkerLabel( label );
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_cColRamp.setRange(fMin, fMax);
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}
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void SoFCColorLegend::setColorModel( App::ColorGradient::TColorModel tModel )
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{
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_cColRamp.setColorModel( tModel );
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App::ColorModel model = _cColRamp.getColorModel();
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int uCtColors = (int)model._usColors;
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// don't know why the parameter range isn't between [-1,+1]
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float fMinX= 4.0f, fMaxX=4.5f;
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float fMinY= -4.0f, fMaxY=4.0f;
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coords->point.setNum(2*uCtColors);
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for ( int i=0; i<uCtColors; i++ )
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{
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float w = (float)i/(float)(uCtColors-1);
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float fPosY = (1.0f-w)*fMaxY + w*fMinY;
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coords->point.set1Value(2*i, fMinX, fPosY, 0.0f);
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coords->point.set1Value(2*i+1, fMaxX, fPosY, 0.0f);
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}
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// for uCtColors colors we need 2*(uCtColors-1) facets and therefore an array with
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// 8*(uCtColors-1) face indices
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SoIndexedFaceSet * faceset = new SoIndexedFaceSet;
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faceset->coordIndex.setNum(8*(uCtColors-1));
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for ( int j=0; j<uCtColors-1; j++ )
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{
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faceset->coordIndex.set1Value(8*j, 2*j);
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faceset->coordIndex.set1Value(8*j+1, 2*j+3);
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faceset->coordIndex.set1Value(8*j+2, 2*j+1);
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faceset->coordIndex.set1Value(8*j+3, SO_END_FACE_INDEX);
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faceset->coordIndex.set1Value(8*j+4, 2*j);
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faceset->coordIndex.set1Value(8*j+5, 2*j+2);
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faceset->coordIndex.set1Value(8*j+6, 2*j+3);
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faceset->coordIndex.set1Value(8*j+7, SO_END_FACE_INDEX);
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}
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SoMaterial* mat = new SoMaterial;
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//mat->transparency = 0.3f;
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mat->diffuseColor.setNum(2*uCtColors);
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for ( int k=0; k<uCtColors; k++ )
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{
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App::Color col = model._pclColors[uCtColors-k-1];
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mat->diffuseColor.set1Value(2*k, col.r, col.g, col.b);
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mat->diffuseColor.set1Value(2*k+1, col.r, col.g, col.b);
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}
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SoMaterialBinding* matBinding = new SoMaterialBinding;
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matBinding->value = SoMaterialBinding::PER_VERTEX_INDEXED;
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// first clear the children
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if ( getNumChildren() > 0 )
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removeAllChildren();
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addChild(labels);
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addChild(coords);
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addChild(mat);
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addChild(matBinding);
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addChild(faceset);
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}
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