From Nick, Improved support for 3D labels.
This commit is contained in:
Robert Osfield
@@ -24,6 +24,8 @@
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#include "TXPArchive.h"
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using namespace txp;
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#include <sstream>
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static osg::ApplicationUsageProxy TXP_e0(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_TXP_DEFAULT_MAX_ANISOTROPY \"<value> [<value>]\"","1.0 | 2.0 | 4.0 | 8.0 | 16.0");
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TXPParser::TXPParser():
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@@ -765,13 +767,35 @@ void* labelRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
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osg::Vec3 pos(label.GetLocation().x, label.GetLocation().y, label.GetLocation().z);
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osg::ref_ptr< osg::Geode > textGeode = new osg::Geode;
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_parse->getCurrTop()->addChild(textGeode.get());
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osg::ref_ptr< osgText::Text > text = new osgText::Text;
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textGeode->addDrawable(text.get());
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// Text
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text->setText(*labelText);
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std::ostringstream os;
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int nl;
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std::string lb = *labelText;
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while ( (nl=lb.find_first_of('\\')) != std::string::npos)
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{
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std::string sub = lb.substr(0,nl);
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switch (lb[nl+1])
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{
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case 'n':
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lb.erase(0,nl+2);
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if (sub.length()) os << sub << std::endl;
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break;
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case 't':
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lb.erase(0,nl+2);
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os << sub << " ";//'\t';
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break;
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default:
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lb.erase(0,nl+1);
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os << '\\' << sub;
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break;
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}
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}
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if (lb.length()) os << lb;
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text->setText(os.str());
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// Position
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text->setPosition(pos);
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// Alignment
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@@ -787,12 +811,13 @@ void* labelRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
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text->setAlignment(osgText::Text::CENTER_BOTTOM);
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}
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// Axis alignment
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text->setAxisAlignment(osgText::Text::XY_PLANE);
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text->setAxisAlignment(osgText::Text::XZ_PLANE);
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const trpgLabelPropertyTable *labelPropertyTable = _parse->getArchive()->GetLabelPropertyTable();
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const trpgLabelProperty *labelProperty = labelPropertyTable ?
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labelPropertyTable->GetPropertyRef(label.GetProperty()) : 0;
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bool addTextGeodeIntoSceneGraph = true;
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if (labelProperty)
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{
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const trpgTextStyleTable *textStyleTable = _parse->getArchive()->GetTextStyleTable();
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@@ -802,34 +827,219 @@ void* labelRead::Parse(trpgToken /*tok*/,trpgReadBuffer &buf)
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if (!textStyle) return (void*)1;
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// Size
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text->setCharacterSize(textStyle->GetCharacterSize()*label.GetScale());
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text->setCharacterSize(textStyle->GetCharacterSize()*label.GetScale()*2);
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text->setCharacterSizeMode(osgText::Text::OBJECT_COORDS);
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// Font
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text->setFont(_parse->getArchive()->getStyles()[labelProperty->GetFontStyle()].get());
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// Color
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text->setColor(_parse->getArchive()->getTextColors()[labelProperty->GetFontStyle()]);
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// Cube
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osg::ref_ptr<osg::ShapeDrawable> cube = 0;
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// Type
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switch (labelProperty->GetType())
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{
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case trpgLabelProperty::Billboard:
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text->setAxisAlignment(osgText::Text::SCREEN);
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text->setAxisAlignment(osgText::Text::XY_PLANE);
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text->setAutoRotateToScreen(true);
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break;
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case trpgLabelProperty::VertBillboard:
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break;
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case trpgLabelProperty::Panel:
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addTextGeodeIntoSceneGraph = false;
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{
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osg::ref_ptr< osg::Billboard > billboard = new osg::Billboard;
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text->setPosition(osg::Vec3(0.f,0.f,0.f));
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billboard->addDrawable(text.get());
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billboard->setAxis(osg::Vec3(0.0f,0.0,1.0f) );
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billboard->setNormal(osg::Vec3(0.0f,-1.0,0.0f));
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billboard->setMode(osg::Billboard::AXIAL_ROT);
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billboard->setPos(0,pos);
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_parse->getCurrTop()->addChild(billboard.get());
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}
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break;
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case trpgLabelProperty::Cube:
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break;
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case trpgLabelProperty::MaxLabelType:
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addTextGeodeIntoSceneGraph = false;
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{
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osg::Group* group = new osg::Group;
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osg::BoundingBox box = text->getBound();
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float shift = box.radius()+1.f;
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// front
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text->setAlignment(osgText::Text::CENTER_CENTER);
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// back
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osg::ref_ptr<osgText::Text> backText = new osgText::Text(*text);
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backText->setPosition(osg::Vec3(pos.x(),pos.y()+shift,pos.z()));
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backText->setAxisAlignment(osgText::Text::REVERSED_XZ_PLANE);
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// top
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osg::ref_ptr<osgText::Text> topText = new osgText::Text(*text);
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topText->setPosition(osg::Vec3(pos.x(),pos.y(),pos.z()+shift));
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topText->setAxisAlignment(osgText::Text::XY_PLANE);
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// bottom
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osg::ref_ptr<osgText::Text> bottomText = new osgText::Text(*text);
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bottomText->setPosition(osg::Vec3(pos.x(),pos.y(),pos.z()-shift));
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bottomText->setAxisAlignment(osgText::Text::REVERSED_XY_PLANE);
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// left
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osg::ref_ptr<osgText::Text> leftText = new osgText::Text(*text);
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leftText->setPosition(osg::Vec3(pos.x()-shift,pos.y(),pos.z()));
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leftText->setAxisAlignment(osgText::Text::REVERSED_YZ_PLANE);
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// right
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osg::ref_ptr<osgText::Text> rightText = new osgText::Text(*text);
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rightText->setPosition(osg::Vec3(pos.x()+shift,pos.y(),pos.z()));
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rightText->setAxisAlignment(osgText::Text::YZ_PLANE);
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text->setPosition(osg::Vec3(pos.x(),pos.y()-shift,pos.z()));
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osg::TessellationHints* hints = new osg::TessellationHints;
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hints->setDetailRatio(0.5f);
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cube = new osg::ShapeDrawable(new osg::Box(pos,2*shift),hints);
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osg::ref_ptr<osg::PolygonOffset> polyoffset = new osg::PolygonOffset;
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polyoffset->setFactor(10.0f);
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polyoffset->setUnits(10.0f);
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osg::ref_ptr<osg::StateSet> ss = cube->getOrCreateStateSet();
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ss->setAttributeAndModes(polyoffset.get(),osg::StateAttribute::ON);
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cube->setStateSet(ss.get());
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textGeode->addDrawable(cube.get());
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textGeode->addDrawable(text.get());
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textGeode->addDrawable(backText.get());
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textGeode->addDrawable(topText.get());
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textGeode->addDrawable(bottomText.get());
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textGeode->addDrawable(leftText.get());
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textGeode->addDrawable(rightText.get());
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group->addChild(textGeode.get());
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_parse->getCurrTop()->addChild(group);
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}
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break;
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}
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}
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#if 1
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osg::TessellationHints* hints = new osg::TessellationHints;
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hints->setDetailRatio(0.5f);
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textGeode->addDrawable(new osg::ShapeDrawable(new osg::Cone(pos,1.f,50.f),hints));
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#endif
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const std::vector<trpg3dPoint> *supports = label.GetSupports();
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if (supports && supports->size())
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{
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osg::ref_ptr<osg::Geode> supGeode = new osg::Geode;
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int supId = labelProperty->GetSupport();
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const trpgSupportStyleTable *supTable = _parse->getArchive()->GetSupportStyleTable();
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const trpgSupportStyle *supStyle = supTable ? supTable->GetStyleRef(supId) : 0;
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if (supStyle)
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{
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int matId = supStyle->GetMaterial();
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osg::Vec4 supLineColor(1.f,1.f,1.f,1.f);
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_parse->loadMaterial(matId);
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osg::ref_ptr<osg::StateSet> sset = (*_parse->getMaterials())[matId];
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if (cube.get())
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{
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osg::StateSet* ss = cube->getOrCreateStateSet();
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ss->merge(*sset);
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}
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const trpgMatTable* matTable = _parse->getArchive()->GetMaterialTable();
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if (matTable)
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{
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const trpgMaterial* mat = matTable->GetMaterialRef(0,matId);
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if (mat)
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{
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trpgColor faceColor;
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mat->GetColor(faceColor);
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float64 alpha;
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mat->GetAlpha(alpha);
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supLineColor = osg::Vec4(faceColor.red, faceColor.green, faceColor.blue, alpha );
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}
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}
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switch (supStyle->GetType())
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{
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case trpgSupportStyle::Line:
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{
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osg::Geometry* linesGeom = new osg::Geometry();
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osg::Vec3Array* vertices = new osg::Vec3Array(supports->size()*2);
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int cnt = 0;
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for (unsigned int i = 0; i < supports->size(); i++)
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{
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const trpg3dPoint& supPt = (*supports)[i];
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(*vertices)[cnt++].set(pos);
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(*vertices)[cnt++].set(osg::Vec3(supPt.x,supPt.y,supPt.z));
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}
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linesGeom->setVertexArray(vertices);
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osg::Vec4Array* colors = new osg::Vec4Array;
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colors->push_back(supLineColor);
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linesGeom->setColorArray(colors);
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linesGeom->setColorBinding(osg::Geometry::BIND_OVERALL);
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osg::Vec3Array* normals = new osg::Vec3Array;
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normals->push_back(osg::Vec3(0.0f,-1.0f,0.0f));
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linesGeom->setNormalArray(normals);
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linesGeom->setNormalBinding(osg::Geometry::BIND_OVERALL);
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linesGeom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,0,supports->size()*2));
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supGeode->addDrawable(linesGeom);
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}
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_parse->getCurrTop()->addChild(supGeode.get());
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break;
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case trpgSupportStyle::Cylinder:
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{
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osg::ref_ptr<osg::TessellationHints> hints = new osg::TessellationHints;
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hints->setDetailRatio(0.5f);
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for (unsigned int i = 0; i < supports->size(); i++)
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{
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const trpg3dPoint& supPt = (*supports)[i];
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osg::Vec3 supPos(supPt.x,supPt.y,supPt.z);
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osg::Vec3 supCenter = (supPos+pos)/2.f;
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float supHeight = (supPos-pos).length();
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osg::Vec3 d = pos-supPos;
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d.normalize();
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osg::Quat r;
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r.makeRotate(osg::Vec3(0.f,0.f,1.f),d);
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osg::Cylinder* cylinder = new osg::Cylinder(supCenter,10.f,supHeight);
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cylinder->setRotation(r);
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osg::ShapeDrawable* cylinderDrawable = new osg::ShapeDrawable(cylinder,hints.get());
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osg::StateSet* ss = cylinderDrawable->getOrCreateStateSet();
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ss->merge(*sset);
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supGeode->addDrawable(cylinderDrawable);
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}
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_parse->getCurrTop()->addChild(supGeode.get());
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}
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break;
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}
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}
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}
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}
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if (addTextGeodeIntoSceneGraph)
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{
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_parse->getCurrTop()->addChild(textGeode.get());
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textGeode->addDrawable(text.get());
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}
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return (void*)1;
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}
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