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create/src/Mod/PartDesign/Gui/ViewProviderDatumCS.cpp
Zolko-123 51f546f1f6 Update Mod/PartDesign/Gui/ViewProviderDatumCS.cpp 
This is a small harmless visual improvement of the LCS representation in the 3D window: it leaves a small empty gap at the origin of the LCS which allows to select the point/vertex on which the LCS is attached
2024-02-12 11:20:20 -06:00

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/***************************************************************************
* Copyright (c) 2015 Stefan Tröger <stefantroeger@gmx.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <Inventor/details/SoLineDetail.h>
# include <Inventor/nodes/SoCoordinate3.h>
# include <Inventor/nodes/SoDrawStyle.h>
# include <Inventor/nodes/SoFont.h>
# include <Inventor/nodes/SoMaterial.h>
# include <Inventor/nodes/SoSeparator.h>
# include <Inventor/nodes/SoSwitch.h>
# include <Inventor/nodes/SoText2.h>
# include <Inventor/nodes/SoTranslation.h>
#endif
#include <App/Application.h>
#include <Gui/Inventor/SoAutoZoomTranslation.h>
#include <Mod/Part/Gui/SoBrepEdgeSet.h>
#include "ViewProviderDatumCS.h"
using namespace PartDesignGui;
PROPERTY_SOURCE(PartDesignGui::ViewProviderDatumCoordinateSystem,PartDesignGui::ViewProviderDatum)
const App::PropertyFloatConstraint::Constraints ZoomConstraint = {0.0,DBL_MAX,0.2};
const App::PropertyIntegerConstraint::Constraints FontConstraint = {1,INT_MAX,1};
ViewProviderDatumCoordinateSystem::ViewProviderDatumCoordinateSystem()
{
Zoom.setConstraints(&ZoomConstraint);
FontSize.setConstraints(&FontConstraint);
auto hGrp = App::GetApplication().GetParameterGroupByPath(
"User parameter:BaseApp/Preferences/Mod/PartDesign");
auto fontSize = hGrp->GetInt("CoordinateSystemFontSize",10);
auto zoom = hGrp->GetFloat("CoordinateSystemZoom",1.0);
auto showLabel = hGrp->GetBool("CoordinateSystemShowLabel",false);
ADD_PROPERTY_TYPE(FontSize, (fontSize), "Datum", App::Prop_None, "");
ADD_PROPERTY_TYPE(Zoom, (zoom), "Datum", App::Prop_None, "");
ADD_PROPERTY_TYPE(ShowLabel, (showLabel), "Datum", App::Prop_None, "");
if(hGrp->GetBool("CoordinateSystemSelectOnTop",true))
OnTopWhenSelected.setValue(1);
sPixmap = "PartDesign_CoordinateSystem.svg";
coord = new SoCoordinate3();
coord->ref();
font = new SoFont();
font->size = FontSize.getValue();
font->ref();
axisLabelXTrans = new SoTranslation();
axisLabelXTrans->ref();
axisLabelXToYTrans = new SoTranslation();
axisLabelXToYTrans->ref();
axisLabelYToZTrans = new SoTranslation();
axisLabelYToZTrans->ref();
autoZoom = new Gui::SoAutoZoomTranslation;
autoZoom->ref();
labelSwitch = nullptr;
}
ViewProviderDatumCoordinateSystem::~ViewProviderDatumCoordinateSystem()
{
coord->unref();
font->unref();
axisLabelXTrans->unref();
axisLabelXToYTrans->unref();
axisLabelYToZTrans->unref();
if(labelSwitch)
labelSwitch->unref();
autoZoom->unref();
}
void ViewProviderDatumCoordinateSystem::attach ( App::DocumentObject *obj ) {
ViewProviderDatum::attach ( obj );
SoMaterial* material = new SoMaterial();
material->diffuseColor.setNum(4);
material->diffuseColor.set1Value(0, SbColor(0.f, 0.f, 0.f));
material->diffuseColor.set1Value(1, SbColor(1.f, 0.f, 0.f));
material->diffuseColor.set1Value(2, SbColor(0.f, 0.6f, 0.f));
material->diffuseColor.set1Value(3, SbColor(0.f, 0.f, 0.8f));
SoMaterialBinding* binding = new SoMaterialBinding();
binding->value = SoMaterialBinding::PER_FACE_INDEXED;
autoZoom->scaleFactor.setValue(Zoom.getValue());
getShapeRoot ()->addChild(autoZoom);
getShapeRoot ()->addChild(binding);
getShapeRoot ()->addChild(material);
coord->point.setNum(7);
ViewProviderDatum::setExtents ( defaultBoundBox () );
getShapeRoot ()->addChild(coord);
SoDrawStyle* style = new SoDrawStyle ();
style->lineWidth = 2.0f;
getShapeRoot ()->addChild(style);
PartGui::SoBrepEdgeSet* lineSet = new PartGui::SoBrepEdgeSet();
lineSet->coordIndex.setNum(9);
// X
lineSet->coordIndex.set1Value(0, 1);
lineSet->coordIndex.set1Value(1, 2);
lineSet->coordIndex.set1Value(2, SO_END_LINE_INDEX);
// Y
lineSet->coordIndex.set1Value(3, 3);
lineSet->coordIndex.set1Value(4, 4);
lineSet->coordIndex.set1Value(5, SO_END_LINE_INDEX);
// Z
lineSet->coordIndex.set1Value(6, 5);
lineSet->coordIndex.set1Value(7, 6);
lineSet->coordIndex.set1Value(8, SO_END_LINE_INDEX);
lineSet->materialIndex.setNum(3);
lineSet->materialIndex.set1Value(0,1);
lineSet->materialIndex.set1Value(1,2);
lineSet->materialIndex.set1Value(2,3);
getShapeRoot ()->addChild(lineSet);
setupLabels();
}
void ViewProviderDatumCoordinateSystem::setupLabels() {
if(!ShowLabel.getValue()) {
if(labelSwitch)
labelSwitch->whichChild = -1;
return;
}else if(labelSwitch) {
labelSwitch->whichChild = 0;
return;
}
labelSwitch = new SoSwitch;
labelSwitch->ref();
getShapeRoot ()->addChild(labelSwitch);
SoGroup *labelGroup = new SoGroup;
labelSwitch->addChild(labelGroup);
labelSwitch->whichChild = 0;
labelGroup->addChild(font);
// Transformation for axis labels are relative so no need in separators
labelGroup->addChild(axisLabelXTrans);
auto* t = new SoText2();
t->string = "X";
labelGroup->addChild(t);
labelGroup->addChild(axisLabelXToYTrans);
t = new SoText2();
t->string = "Y";
labelGroup->addChild(t);
labelGroup->addChild(axisLabelYToZTrans);
t = new SoText2();
t->string = "Z";
labelGroup->addChild(t);
}
void ViewProviderDatumCoordinateSystem::updateData(const App::Property* prop)
{
if (strcmp(prop->getName(),"Placement") == 0)
updateExtents ();
ViewProviderDatum::updateData(prop);
}
void ViewProviderDatumCoordinateSystem::onChanged(const App::Property *prop) {
if(getObject()) {
if(prop == &ShowLabel)
setupLabels();
else if(prop == &Zoom) {
autoZoom->scaleFactor.setValue(Zoom.getValue());
updateExtents ();
} else if(prop == &FontSize)
font->size = FontSize.getValue();
}
ViewProviderDatum::onChanged(prop);
}
void ViewProviderDatumCoordinateSystem::setExtents (Base::BoundBox3d bbox) {
// Axis length of the CS is 1/3 of maximum bbox dimension, any smarter sizing will make it only worse
double axisLength;
// Empty gap at the origin of the coordinate system, this is a nice experimental value
double centerGap;
if(Zoom.getValue()) {
axisLength = 6 * Zoom.getValue();
}else{
axisLength = std::max ( { bbox.LengthX (), bbox.LengthY(), bbox.LengthZ() } );
axisLength *= (1 + marginFactor ()) / 3;
}
centerGap = axisLength / 8.;
coord->point.set1Value ( 0, 0, 0, 0 );
coord->point.set1Value ( 1, centerGap, 0, 0 );
coord->point.set1Value ( 2, axisLength, 0, 0 );
coord->point.set1Value ( 3, 0, centerGap, 0 );
coord->point.set1Value ( 4, 0, axisLength, 0 );
coord->point.set1Value ( 5, 0, 0, centerGap );
coord->point.set1Value ( 6, 0, 0, axisLength );
double labelPos = axisLength;
double labelOffset = 0;
// offset 1 pixel
axisLabelXTrans->translation.setValue ( SbVec3f( labelPos, labelOffset, 0) );
axisLabelXToYTrans->translation.setValue ( SbVec3f( -labelPos + labelOffset, labelPos - labelOffset, 0) );
axisLabelYToZTrans->translation.setValue ( SbVec3f( -labelOffset, -labelPos + labelOffset, labelPos) );
}
std::string ViewProviderDatumCoordinateSystem::getElement(const SoDetail* detail) const
{
if (detail && detail->getTypeId() == SoLineDetail::getClassTypeId()) {
const SoLineDetail* line_detail = static_cast<const SoLineDetail*>(detail);
switch(line_detail->getLineIndex()) {
case 0:
return "X";
case 1:
return "Y";
case 2:
return "Z";
}
}
return {};
}
SoDetail* ViewProviderDatumCoordinateSystem::getDetail(const char* subelement) const
{
if (strcmp(subelement,"X")==0) {
SoLineDetail* detail = new SoLineDetail();
detail->setLineIndex(0);
return detail;
} else if (strcmp(subelement,"Y")==0) {
SoLineDetail* detail = new SoLineDetail();
detail->setLineIndex(1);
return detail;
} else if (strcmp(subelement,"Z")==0) {
SoLineDetail* detail = new SoLineDetail();
detail->setLineIndex(2);
return detail;
}
return nullptr;
}
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