179 lines
5.5 KiB
C++
179 lines
5.5 KiB
C++
#include <osgDB/ReadFile>
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#include <osg/Switch>
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#include <osg/Texture2D>
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#include <osg/MatrixTransform>
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#include <osg/Quat>
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#include <osg/Geometry>
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#include <osg/Geode>
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#include <osg/PolygonOffset>
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#include <osgText/Text>
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osg::MatrixTransform* createPositionedAndScaledModel(osg::Node* model,const osg::Vec3& pos, float radius, osg::Quat rotation)
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{
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osg::MatrixTransform* transform = new osg::MatrixTransform;
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const osg::BoundingSphere& bs = model->getBound();
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transform->setDataVariance(osg::Object::STATIC);
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transform->setMatrix(osg::Matrix::translate(-bs.center())*
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osg::Matrix::scale(radius/bs.radius(),radius/bs.radius(),radius/bs.radius())*
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osg::Matrix::rotate(rotation)*
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osg::Matrix::translate(pos));
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transform->addChild(model);
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return transform;
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}
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osg::Vec4 layoutColor(1.0f,1.0f,1.0f,1.0f);
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float layoutCharacterSize = 50.0f;
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std::string fontStr("fonts/arial.ttf");
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osg::Geode* createText(osg::Vec3& cursor,const std::string& str)
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{
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osg::Geode* geode = new osg::Geode;
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osgText::Text* text = new osgText::Text;
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text->setFont(fontStr);
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text->setColor(layoutColor);
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text->setCharacterSize(layoutCharacterSize);
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text->setAxisAlignment(osgText::Text::XZ_PLANE);
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text->setPosition(cursor);
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text->setText(str);
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osg::BoundingBox bb = text->getBound();
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cursor.z() = bb.zMin()-layoutCharacterSize;
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geode->addDrawable(text);
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return geode;
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}
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osg::Node* createDefaultPresentation()
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{
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osg::Switch* presentation = new osg::Switch;
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presentation->setName("Presentation default");
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float width = 1280.0f;
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float height = 1024.0f;
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osg::Geometry* backgroundQuad = osg::createTexturedQuadGeometry(osg::Vec3(0.0f,0.0f,0.0f),
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osg::Vec3(width,0.0f,0.0f),
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osg::Vec3(0.0f,0.0f,height));
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osg::Geode* background = new osg::Geode;
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osg::StateSet* backgroundStateSet = background->getOrCreateStateSet();
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backgroundStateSet->setAttributeAndModes(
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new osg::PolygonOffset(1.0f,1.0f),
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osg::StateAttribute::ON);
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backgroundStateSet->setTextureAttributeAndModes(0,
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new osg::Texture2D(osgDB::readImageFile("lz.rgb")),
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osg::StateAttribute::ON);
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background->addDrawable(backgroundQuad);
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osg::Geode* background2 = new osg::Geode;
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background2->getOrCreateStateSet()->setTextureAttributeAndModes(0,
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new osg::Texture2D(osgDB::readImageFile("reflect.rgb")),
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osg::StateAttribute::ON);
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background2->addDrawable(backgroundQuad);
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{
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osg::Switch* slide = new osg::Switch;
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slide->setName("Slide 0");
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osg::Vec3 cursor(width*0.25f,0.0f,height*.75f);
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osg::Group* layer_0 = new osg::Group;
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{
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layer_0->setName("Layer 0");
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layer_0->addChild(background);
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layer_0->addChild(createText(cursor,"The is layer 0"));
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slide->addChild(layer_0);
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}
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osg::Group* layer_1 = new osg::Group;
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{
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layer_1->setName("Layer 1");
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layer_1->addChild(layer_0);
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layer_1->addChild(createText(cursor,"The is layer 1"));
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slide->addChild(layer_1);
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}
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osg::Group* layer_2 = new osg::Group;
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{
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layer_2->setName("Layer 2");
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layer_2->addChild(layer_1);
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layer_2->addChild(createText(cursor,"The is layer 2\nWe can have multiple lines of text..."));
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slide->addChild(layer_2);
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}
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{
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osg::Group* layer_3 = new osg::Group;
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layer_3->setName("Layer 3");
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layer_3->addChild(layer_2);
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layer_3->addChild(createText(cursor,"The is layer 3, with cow.osg"));
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layer_3->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("cow.osg"),
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osg::Vec3(600.0f,0.0f,300.0f),500.0f,
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osg::Quat()));
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slide->addChild(layer_3);
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}
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presentation->addChild(slide);
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}
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{
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osg::Switch* slide = new osg::Switch;
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slide->setName("Slide 1");
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{
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osg::Group* group = new osg::Group;
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group->setName("Layer 0");
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group->addChild(background);
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group->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("glider.osg"),
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osg::Vec3(600.0f,0.0f,600.0f),500.0f,
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osg::Quat()));
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slide->addChild(group);
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}
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{
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osg::Group* group = new osg::Group;
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group->setName("Layer 1");
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group->addChild(background2);
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group->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("Town.osg"),
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osg::Vec3(600.0f,0.0f,600.0f),500.0f,
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osg::Quat()));
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slide->addChild(group);
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}
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presentation->addChild(slide);
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}
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return presentation;
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}
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