786 lines
26 KiB
C++
786 lines
26 KiB
C++
/* OpenSceneGraph example, osgtext.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include <osgUtil/Optimizer>
|
|
|
|
#include <osgDB/ReadFile>
|
|
#include <osgDB/WriteFile>
|
|
#include <osgDB/Registry>
|
|
|
|
#include <osgGA/StateSetManipulator>
|
|
#include <osgViewer/Viewer>
|
|
#include <osgViewer/ViewerEventHandlers>
|
|
|
|
#include <osg/Geode>
|
|
#include <osg/Camera>
|
|
#include <osg/ShapeDrawable>
|
|
#include <osg/Sequence>
|
|
#include <osg/PolygonMode>
|
|
#include <osg/io_utils>
|
|
|
|
#include <osgText/Font>
|
|
#include <osgText/Text>
|
|
|
|
osg::Group* createHUDText()
|
|
{
|
|
|
|
osg::Group* rootNode = new osg::Group;
|
|
|
|
osg::ref_ptr<osgText::Font> font = osgText::readRefFontFile("fonts/arial.ttf");
|
|
|
|
//osg::setNotifyLevel(osg::INFO);
|
|
|
|
osg::Geode* geode = new osg::Geode;
|
|
rootNode->addChild(geode);
|
|
|
|
float windowHeight = 1024.0f;
|
|
float windowWidth = 1280.0f;
|
|
float margin = 50.0f;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up different text layout
|
|
//
|
|
|
|
osg::Vec4 layoutColor(1.0f,1.0f,0.0f,1.0f);
|
|
float layoutCharacterSize = 20.0f;
|
|
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(layoutColor);
|
|
text->setCharacterSize(layoutCharacterSize);
|
|
text->setPosition(osg::Vec3(margin,windowHeight-margin,0.0f));
|
|
|
|
// the default layout is left to right, typically used in languages
|
|
// originating from europe such as English, French, German, Spanish etc..
|
|
text->setLayout(osgText::Text::LEFT_TO_RIGHT);
|
|
|
|
text->setText("text->setLayout(osgText::Text::LEFT_TO_RIGHT);");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(layoutColor);
|
|
text->setCharacterSize(layoutCharacterSize);
|
|
text->setPosition(osg::Vec3(windowWidth-margin,windowHeight-margin,0.0f));
|
|
|
|
// right to left layouts would be used for hebrew or arabic fonts.
|
|
text->setLayout(osgText::Text::RIGHT_TO_LEFT);
|
|
text->setAlignment(osgText::Text::RIGHT_BASE_LINE);
|
|
|
|
text->setText("text->setLayout(osgText::Text::RIGHT_TO_LEFT);");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(layoutColor);
|
|
text->setPosition(osg::Vec3(margin,windowHeight-margin,0.0f));
|
|
text->setCharacterSize(layoutCharacterSize);
|
|
|
|
// vertical font layout would be used for asian fonts.
|
|
text->setLayout(osgText::Text::VERTICAL);
|
|
|
|
text->setText("text->setLayout(osgText::Text::VERTICAL);");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up different font resolution
|
|
//
|
|
|
|
osg::Vec4 fontSizeColor(0.0f,1.0f,1.0f,1.0f);
|
|
float fontSizeCharacterSize = 30;
|
|
|
|
osg::Vec3 cursor = osg::Vec3(margin*2,windowHeight-margin*2,0.0f);
|
|
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(fontSizeColor);
|
|
text->setCharacterSize(fontSizeCharacterSize);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that uses 10 by 10 texels as a target resolution for fonts.
|
|
text->setFontResolution(10,10); // blocky but small texture memory usage
|
|
|
|
text->setText("text->setFontResolution(10,10); // blocky but small texture memory usage");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
cursor.y() -= fontSizeCharacterSize;
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(fontSizeColor);
|
|
text->setCharacterSize(fontSizeCharacterSize);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that uses 20 by 20 texels as a target resolution for fonts.
|
|
text->setFontResolution(20,20); // smoother but higher texture memory usage (but still quite low).
|
|
|
|
text->setText("text->setFontResolution(20,20); // smoother but higher texture memory usage (but still quite low).");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
cursor.y() -= fontSizeCharacterSize;
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(fontSizeColor);
|
|
text->setCharacterSize(fontSizeCharacterSize);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that uses 40 by 40 texels as a target resolution for fonts.
|
|
text->setFontResolution(40,40); // even smoother but again higher texture memory usage.
|
|
|
|
text->setText("text->setFontResolution(40,40); // even smoother but again higher texture memory usage.");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up different sized text
|
|
//
|
|
|
|
osg::Vec4 characterSizeColor(1.0f,0.0f,1.0f,1.0f);
|
|
|
|
cursor.y() -= fontSizeCharacterSize*2.0f;
|
|
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(characterSizeColor);
|
|
text->setFontResolution(20,20);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that is 20 units high.
|
|
text->setCharacterSize(20); // small
|
|
|
|
text->setText("text->setCharacterSize(20.0f); // small");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
cursor.y() -= 30.0f;
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(characterSizeColor);
|
|
text->setFontResolution(30,30);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that is 30 units high.
|
|
text->setCharacterSize(30.0f); // medium
|
|
|
|
text->setText("text->setCharacterSize(30.0f); // medium");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
cursor.y() -= 50.0f;
|
|
{
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(characterSizeColor);
|
|
text->setFontResolution(40,40);
|
|
text->setPosition(cursor);
|
|
|
|
// use text that is 60 units high.
|
|
text->setCharacterSize(60.0f); // large
|
|
|
|
text->setText("text->setCharacterSize(60.0f); // large");
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up different alignments
|
|
//
|
|
|
|
osg::Vec4 alignmentSizeColor(0.0f,1.0f,0.0f,1.0f);
|
|
float alignmentCharacterSize = 25.0f;
|
|
cursor.x() = 640;
|
|
cursor.y() = margin*4.0f;
|
|
|
|
typedef std::pair<osgText::Text::AlignmentType,std::string> AlignmentPair;
|
|
typedef std::vector<AlignmentPair> AlignmentList;
|
|
AlignmentList alignmentList;
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::LEFT_TOP,"text->setAlignment(\nosgText::Text::LEFT_TOP);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::LEFT_CENTER,"text->setAlignment(\nosgText::Text::LEFT_CENTER);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::LEFT_BOTTOM,"text->setAlignment(\nosgText::Text::LEFT_BOTTOM);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::CENTER_TOP,"text->setAlignment(\nosgText::Text::CENTER_TOP);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::CENTER_CENTER,"text->setAlignment(\nosgText::Text::CENTER_CENTER);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::CENTER_BOTTOM,"text->setAlignment(\nosgText::Text::CENTER_BOTTOM);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::RIGHT_TOP,"text->setAlignment(\nosgText::Text::RIGHT_TOP);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::RIGHT_CENTER,"text->setAlignment(\nosgText::Text::RIGHT_CENTER);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::RIGHT_BOTTOM,"text->setAlignment(\nosgText::Text::RIGHT_BOTTOM);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::LEFT_BASE_LINE,"text->setAlignment(\nosgText::Text::LEFT_BASE_LINE);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::CENTER_BASE_LINE,"text->setAlignment(\nosgText::Text::CENTER_BASE_LINE);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::RIGHT_BASE_LINE,"text->setAlignment(\nosgText::Text::RIGHT_BASE_LINE);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::LEFT_BOTTOM_BASE_LINE,"text->setAlignment(\nosgText::Text::LEFT_BOTTOM_BASE_LINE);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::CENTER_BOTTOM_BASE_LINE,"text->setAlignment(\nosgText::Text::CENTER_BOTTOM_BASE_LINE);"));
|
|
alignmentList.push_back(AlignmentPair(osgText::Text::RIGHT_BOTTOM_BASE_LINE,"text->setAlignment(\nosgText::Text::RIGHT_BOTTOM_BASE_LINE);"));
|
|
|
|
|
|
osg::Sequence* sequence = new osg::Sequence;
|
|
{
|
|
for(AlignmentList::iterator itr=alignmentList.begin();
|
|
itr!=alignmentList.end();
|
|
++itr)
|
|
{
|
|
osg::Geode* alignmentGeode = new osg::Geode;
|
|
sequence->addChild(alignmentGeode);
|
|
sequence->setTime(sequence->getNumChildren(), 1.0f);
|
|
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setFont(font);
|
|
text->setColor(alignmentSizeColor);
|
|
text->setCharacterSize(alignmentCharacterSize);
|
|
text->setPosition(cursor);
|
|
text->setDrawMode(osgText::Text::TEXT|osgText::Text::ALIGNMENT|osgText::Text::BOUNDINGBOX);
|
|
|
|
text->setAlignment(itr->first);
|
|
text->setText(itr->second);
|
|
|
|
alignmentGeode->addDrawable(text);
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
sequence->setMode(osg::Sequence::START);
|
|
sequence->setInterval(osg::Sequence::LOOP, 0, -1);
|
|
sequence->setDuration(1.0f, -1);
|
|
|
|
rootNode->addChild(sequence);
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up different fonts...
|
|
//
|
|
|
|
cursor.x() = margin*2.0f;
|
|
cursor.y() = margin*2.0f;
|
|
|
|
osg::Vec4 fontColor(1.0f,0.5f,0.0f,1.0f);
|
|
float fontCharacterSize = 20.0f;
|
|
float spacing = 40.0f;
|
|
|
|
{
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setColor(fontColor);
|
|
text->setPosition(cursor);
|
|
text->setCharacterSize(fontCharacterSize);
|
|
|
|
text->setFont(0);
|
|
text->setText("text->setFont(0); // inbuilt font.");
|
|
geode->addDrawable(text);
|
|
|
|
cursor.x() = text->getBoundingBox().xMax() + spacing ;
|
|
}
|
|
|
|
{
|
|
osg::ref_ptr<osgText::Font> arial = osgText::readRefFontFile("fonts/arial.ttf");
|
|
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setColor(fontColor);
|
|
text->setPosition(cursor);
|
|
text->setCharacterSize(fontCharacterSize);
|
|
|
|
text->setFont(arial);
|
|
text->setText(arial!=0?
|
|
"text->setFont(\"fonts/arial.ttf\");":
|
|
"unable to load \"fonts/arial.ttf\"");
|
|
geode->addDrawable(text);
|
|
|
|
cursor.x() = text->getBoundingBox().xMax() + spacing ;
|
|
}
|
|
|
|
{
|
|
osg::ref_ptr<osgText::Font> times = osgText::readRefFontFile("fonts/times.ttf");
|
|
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setColor(fontColor);
|
|
text->setPosition(cursor);
|
|
text->setCharacterSize(fontCharacterSize);
|
|
|
|
geode->addDrawable(text);
|
|
text->setFont(times);
|
|
text->setText(times!=0?
|
|
"text->setFont(\"fonts/times.ttf\");":
|
|
"unable to load \"fonts/times.ttf\"");
|
|
|
|
cursor.x() = text->getBoundingBox().xMax() + spacing ;
|
|
}
|
|
|
|
cursor.x() = margin*2.0f;
|
|
cursor.y() = margin;
|
|
|
|
{
|
|
osg::ref_ptr<osgText::Font> dirtydoz = osgText::readRefFontFile("fonts/dirtydoz.ttf");
|
|
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setColor(fontColor);
|
|
text->setPosition(cursor);
|
|
text->setCharacterSize(fontCharacterSize);
|
|
|
|
text->setFont(dirtydoz);
|
|
text->setText(dirtydoz!=0?
|
|
"text->setFont(\"fonts/dirtydoz.ttf\");":
|
|
"unable to load \"fonts/dirtydoz.ttf\"");
|
|
geode->addDrawable(text);
|
|
|
|
cursor.x() = text->getBoundingBox().xMax() + spacing ;
|
|
}
|
|
|
|
{
|
|
osg::ref_ptr<osgText::Font> fudd = osgText::readRefFontFile("fonts/fudd.ttf");
|
|
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setColor(fontColor);
|
|
text->setPosition(cursor);
|
|
text->setCharacterSize(fontCharacterSize);
|
|
|
|
text->setFont(fudd);
|
|
text->setText(fudd!=0?
|
|
"text->setFont(\"fonts/fudd.ttf\");":
|
|
"unable to load \"fonts/fudd.ttf\"");
|
|
geode->addDrawable(text);
|
|
|
|
cursor.x() = text->getBoundingBox().xMax() + spacing ;
|
|
}
|
|
|
|
return rootNode;
|
|
}
|
|
|
|
|
|
|
|
|
|
// create text which sits in 3D space such as would be inserted into a normal model
|
|
osg::Group* create3DText(const osg::Vec3& center,float radius)
|
|
{
|
|
|
|
osg::Geode* geode = new osg::Geode;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Examples of how to set up axis/orientation alignments
|
|
//
|
|
|
|
float characterSize=radius*0.2f;
|
|
|
|
|
|
osg::Vec3 pos(center.x()-radius*.5f,center.y()-radius*.5f,center.z()-radius*.5f);
|
|
|
|
osgText::Text* text1 = new osgText::Text;
|
|
text1->setFont("fonts/times.ttf");
|
|
text1->setCharacterSize(characterSize);
|
|
text1->setPosition(pos);
|
|
text1->setAxisAlignment(osgText::Text::XY_PLANE);
|
|
text1->setText("XY_PLANE");
|
|
geode->addDrawable(text1);
|
|
|
|
osgText::Text* text2 = new osgText::Text;
|
|
text2->setFont("fonts/times.ttf");
|
|
text2->setCharacterSize(characterSize);
|
|
text2->setPosition(pos);
|
|
text2->setAxisAlignment(osgText::Text::YZ_PLANE);
|
|
text2->setText("YZ_PLANE");
|
|
geode->addDrawable(text2);
|
|
|
|
osgText::Text* text3 = new osgText::Text;
|
|
text3->setFont("fonts/times.ttf");
|
|
text3->setCharacterSize(characterSize);
|
|
text3->setPosition(pos);
|
|
text3->setAxisAlignment(osgText::Text::XZ_PLANE);
|
|
text3->setText("XZ_PLANE");
|
|
geode->addDrawable(text3);
|
|
|
|
osg::Vec4 characterSizeModeColor(1.0f,0.0f,0.5f,1.0f);
|
|
|
|
osgText::Text* text4 = new osgText::Text;
|
|
text4->setFont("fonts/times.ttf");
|
|
text4->setCharacterSize(characterSize);
|
|
text4->setPosition(center);
|
|
text4->setAxisAlignment(osgText::Text::SCREEN);
|
|
|
|
// reproduce outline bounding box compute problem with backdrop on.
|
|
text4->setBackdropType(osgText::Text::OUTLINE);
|
|
text4->setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);
|
|
|
|
text4->setText("SCREEN");
|
|
geode->addDrawable(text4);
|
|
|
|
osgText::Text* text5 = new osgText::Text;
|
|
text5->setColor(characterSizeModeColor);
|
|
text5->setFont("fonts/times.ttf");
|
|
//text5->setCharacterSize(characterSize);
|
|
text5->setCharacterSize(32.0f); // medium
|
|
text5->setPosition(center - osg::Vec3(0.0, 0.0, 0.2));
|
|
text5->setAxisAlignment(osgText::Text::SCREEN);
|
|
text5->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
|
|
text5->setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);
|
|
text5->setText("CharacterSizeMode SCREEN_COORDS(size 32.0)");
|
|
geode->addDrawable(text5);
|
|
|
|
osgText::Text* text6 = new osgText::Text;
|
|
text6->setColor(characterSizeModeColor);
|
|
text6->setFont("fonts/times.ttf");
|
|
text6->setCharacterSize(characterSize);
|
|
text6->setPosition(center - osg::Vec3(0.0, 0.0, 0.4));
|
|
text6->setAxisAlignment(osgText::Text::SCREEN);
|
|
text6->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
|
|
text6->setText("CharacterSizeMode OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT");
|
|
geode->addDrawable(text6);
|
|
|
|
osgText::Text* text7 = new osgText::Text;
|
|
text7->setColor(characterSizeModeColor);
|
|
text7->setFont("fonts/times.ttf");
|
|
text7->setCharacterSize(characterSize);
|
|
text7->setPosition(center - osg::Vec3(0.0, 0.0, 0.6));
|
|
text7->setAxisAlignment(osgText::Text::SCREEN);
|
|
text7->setCharacterSizeMode(osgText::Text::OBJECT_COORDS);
|
|
text7->setText("CharacterSizeMode OBJECT_COORDS (default)");
|
|
geode->addDrawable(text7);
|
|
|
|
|
|
#if 0
|
|
osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(center,characterSize*0.2f));
|
|
shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
|
|
geode->addDrawable(shape);
|
|
#endif
|
|
|
|
osg::Group* rootNode = new osg::Group;
|
|
rootNode->addChild(geode);
|
|
|
|
return rootNode;
|
|
}
|
|
|
|
class UpdateTextOperation : public osg::Operation
|
|
{
|
|
public:
|
|
|
|
UpdateTextOperation(const osg::Vec3& center, float diameter, osg::Group* group):
|
|
osg::Referenced(true),
|
|
Operation("UpdateTextOperation", true),
|
|
_center(center),
|
|
_diameter(diameter),
|
|
_maxNumChildren(200),
|
|
_maxNumTextPerGeode(10),
|
|
_group(group)
|
|
{
|
|
}
|
|
|
|
virtual void operator () (osg::Object* callingObject)
|
|
{
|
|
// decided which method to call according to whole has called me.
|
|
osgViewer::Viewer* viewer = dynamic_cast<osgViewer::Viewer*>(callingObject);
|
|
|
|
if (viewer) update();
|
|
else load();
|
|
}
|
|
|
|
void update()
|
|
{
|
|
// osg::notify(osg::NOTICE)<<"*** Doing update"<<std::endl;
|
|
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
|
|
|
|
if (_mergeSubgraph.valid())
|
|
{
|
|
_group->addChild(_mergeSubgraph.get());
|
|
|
|
_mergeSubgraph = 0;
|
|
|
|
if (_group->getNumChildren()>_maxNumChildren)
|
|
{
|
|
osg::Geode* geode = dynamic_cast<osg::Geode*>(_group->getChild(0));
|
|
if (geode)
|
|
{
|
|
_availableSubgraph.push_back(geode);
|
|
geode->removeDrawables(0,geode->getNumDrawables());
|
|
}
|
|
_group->removeChild(0,1);
|
|
}
|
|
|
|
_waitOnMergeBlock.release();
|
|
}
|
|
}
|
|
|
|
void load()
|
|
{
|
|
|
|
// osg::notify(osg::NOTICE)<<"Doing load"<<std::endl;
|
|
|
|
osg::ref_ptr<osg::Geode> geode;
|
|
{
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
|
|
if (!_availableSubgraph.empty())
|
|
{
|
|
geode = _availableSubgraph.front();
|
|
_availableSubgraph.pop_front();
|
|
}
|
|
}
|
|
|
|
if (!geode) geode = new osg::Geode;
|
|
|
|
for(unsigned int i=0; i<_maxNumTextPerGeode; ++i)
|
|
{
|
|
float x = float(rand()) / float(RAND_MAX) - 0.5f;
|
|
float y = float(rand()) / float(RAND_MAX) - 0.5f;
|
|
float z = float(i) / float(_maxNumTextPerGeode) - 0.5f;
|
|
osg::Vec3 position(x, y, z);
|
|
|
|
std::string str;
|
|
unsigned int _numCharacters = 5;
|
|
for(unsigned int ni=0; ni<_numCharacters;++ni)
|
|
{
|
|
str.push_back(char(32.0 + (float(rand())/float(RAND_MAX))*128.0f));
|
|
}
|
|
|
|
osgText::Text* text = new osgText::Text;
|
|
text->setDataVariance(osg::Object::DYNAMIC);
|
|
text->setPosition(_center + position * _diameter);
|
|
text->setFont("times.ttf");
|
|
text->setText(str);
|
|
text->setCharacterSize(0.025f * _diameter);
|
|
text->setAxisAlignment(osgText::Text::SCREEN);
|
|
|
|
geode->addDrawable(text);
|
|
}
|
|
|
|
|
|
{
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
|
|
_mergeSubgraph = geode;
|
|
}
|
|
|
|
// osg::notify(osg::NOTICE)<<"Waiting on merge"<<std::endl;
|
|
|
|
_waitOnMergeBlock.block();
|
|
|
|
}
|
|
|
|
virtual void release()
|
|
{
|
|
_waitOnMergeBlock.release();
|
|
}
|
|
|
|
typedef std::list< osg::ref_ptr<osg::Geode> > AvailableList;
|
|
|
|
osg::Vec3 _center;
|
|
float _diameter;
|
|
unsigned int _maxNumChildren;
|
|
unsigned int _maxNumTextPerGeode;
|
|
|
|
OpenThreads::Mutex _mutex;
|
|
osg::ref_ptr<osg::Group> _group;
|
|
osg::ref_ptr<osg::Geode> _mergeSubgraph;
|
|
AvailableList _availableSubgraph;
|
|
OpenThreads::Block _waitOnMergeBlock;
|
|
|
|
unsigned int _counter;
|
|
|
|
};
|
|
|
|
|
|
struct TextCounterCallback : public osg::NodeCallback
|
|
{
|
|
unsigned int _textCounter;
|
|
|
|
TextCounterCallback():
|
|
_textCounter(100000) {}
|
|
|
|
virtual void operator()(osg::Node* node, osg::NodeVisitor*)
|
|
{
|
|
osgText::Text* text = dynamic_cast<osgText::Text*>(node);
|
|
if (text)
|
|
{
|
|
std::stringstream str;
|
|
str <<"Text Counter "<<_textCounter;
|
|
OSG_NOTICE<<"Updating text : "<<str.str()<<std::endl;
|
|
|
|
text->setText(str.str());
|
|
|
|
++_textCounter;
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
osg::ArgumentParser arguments(&argc, argv);
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer(arguments);
|
|
|
|
typedef std::list< osg::ref_ptr<osg::OperationThread> > Threads;
|
|
|
|
Threads operationThreads;
|
|
osg::ref_ptr<UpdateTextOperation> updateOperation;
|
|
unsigned int numThreads = 0;
|
|
|
|
if (arguments.read("--simple"))
|
|
{
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setFont("fonts/times.ttf");
|
|
text->setAxisAlignment(osgText::Text::XZ_PLANE);
|
|
text->setDrawMode(osgText::Text::TEXT|osgText::Text::ALIGNMENT|osgText::Text::BOUNDINGBOX|osgText::Text::FILLEDBOUNDINGBOX);
|
|
text->setText("This is a simple test");
|
|
|
|
viewer.setSceneData(text.get());
|
|
}
|
|
else if (arguments.read("--plain"))
|
|
{
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setFont("fonts/times.ttf");
|
|
text->setAxisAlignment(osgText::Text::XZ_PLANE);
|
|
text->setText("This is a plain test");
|
|
|
|
viewer.setSceneData(text.get());
|
|
}
|
|
else if (arguments.read("--counter"))
|
|
{
|
|
osg::ref_ptr<osgText::Text> text = new osgText::Text;
|
|
text->setUpdateCallback(new TextCounterCallback());
|
|
text->setFont("fonts/times.ttf");
|
|
text->setAxisAlignment(osgText::Text::XZ_PLANE);
|
|
text->setText("Text Counter :");
|
|
|
|
viewer.setSceneData(text.get());
|
|
}
|
|
else if (arguments.read("--mt", numThreads) || arguments.read("--mt"))
|
|
{
|
|
// construct a multi-threaded text updating test.
|
|
if (numThreads==0) numThreads = 1;
|
|
|
|
// create a group to add everything into.
|
|
osg::Group* mainGroup = new osg::Group;
|
|
|
|
osg::Vec3 center(0.5f,0.5f,0.5f);
|
|
float diameter = 1.0f;
|
|
|
|
osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments);
|
|
if (loadedModel.valid())
|
|
{
|
|
mainGroup->addChild(loadedModel);
|
|
|
|
center = loadedModel->getBound().center();
|
|
diameter = loadedModel->getBound().radius() * 2.0f;
|
|
}
|
|
|
|
for(unsigned int i=0; i<numThreads; ++i)
|
|
{
|
|
osg::Group* textGroup = new osg::Group;
|
|
mainGroup->addChild(textGroup);
|
|
|
|
// create the background thread
|
|
osg::OperationThread* operationThread = new osg::OperationThread;
|
|
|
|
operationThreads.push_back(operationThread);
|
|
|
|
// create the operation that will run in the background and
|
|
// sync once per frame with the main viewer loop.
|
|
updateOperation = new UpdateTextOperation(center, diameter, textGroup);
|
|
|
|
// add the operation to the operation thread and start it.
|
|
operationThread->add(updateOperation.get());
|
|
operationThread->startThread();
|
|
|
|
// add the operation to the viewer to sync once per frame.
|
|
viewer.addUpdateOperation(updateOperation.get());
|
|
|
|
|
|
// add a unit cube for the text to appear within.
|
|
osg::Geode* geode = new osg::Geode;
|
|
geode->getOrCreateStateSet()->setAttribute(new osg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE));
|
|
geode->addDrawable(new osg::ShapeDrawable(new osg::Box(center,diameter)));
|
|
|
|
mainGroup->addChild(geode);
|
|
}
|
|
|
|
viewer.setSceneData(mainGroup);
|
|
}
|
|
else
|
|
{
|
|
// prepare scene.
|
|
osg::Vec3 center(0.0f,0.0f,0.0f);
|
|
float radius = 1.0f;
|
|
|
|
// make sure the root node is group so we can add extra nodes to it.
|
|
osg::Group* group = new osg::Group;
|
|
|
|
if (true)
|
|
{
|
|
// create the hud.
|
|
osg::Camera* camera = new osg::Camera;
|
|
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
|
|
camera->setProjectionMatrixAsOrtho2D(0,1280,0,1024);
|
|
camera->setViewMatrix(osg::Matrix::identity());
|
|
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
|
|
camera->addChild(createHUDText());
|
|
camera->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
|
|
|
|
group->addChild(camera);
|
|
}
|
|
|
|
if (true)
|
|
{
|
|
group->addChild(create3DText(center,radius));
|
|
}
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(group);
|
|
}
|
|
|
|
std::string filename;
|
|
if (arguments.read("-o",filename))
|
|
{
|
|
osgDB::writeNodeFile(*viewer.getSceneData(),filename);
|
|
return 0;
|
|
}
|
|
|
|
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
|
|
viewer.addEventHandler(new osgViewer::StatsHandler());
|
|
|
|
viewer.run();
|
|
|
|
if (!operationThreads.empty())
|
|
{
|
|
for(Threads::iterator itr = operationThreads.begin();
|
|
itr != operationThreads.end();
|
|
++itr)
|
|
{
|
|
(*itr)->cancel();
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|