使用Qt+osgEarth绘制标牌

/***************************** * class：DT_Billboard * function：绘制动目标标牌 * time：2022.3.22 * create by mah * maintenance by mah * way： *****************************/ #include "DT_Billboard.h" #include <osgWidget/Label> #include <osg/LineWidth> #include <osgWidget/WindowManager> #include <osgViewer/Renderer> #include <osg/PositionAttitudeTransform> #include <Windows.h> #include <QDebug> #include "general_tools/CoordinateFeature.h" DT_Billboard::DT_Billboard(const std::string &id, osg::Node *posnode) : osgWidget::Box("billboard", osgWidget::Box::VERTICAL), m_positionNode(posnode), m_id(id), m_simpleLabel(NULL), m_isVisible(false), m_isItemVisible(false), m_isMouseDrag(false), m_isMousePush(false) { getBackground()->setColor(1.0, 1.0, 1.0, 0.0); // setEventMask(osgWidget::EVENT_ALL); // attachMoveCallback(); m_geode = new osg::Geode(); m_detailLabels.clear(); } DT_Billboard::~DT_Billboard() { // 拒绝隐式调用 } void DT_Billboard::setSimpleTitle(const QString &title) { if(!m_simpleLabel) { m_simpleLabel = new osgWidget::Label(m_id); m_simpleLabel->setFont("fonts/simhei.ttf"); m_simpleLabel->setFontSize(15); m_simpleLabel->setFontColor(1.0f, 1.0f, 1.0f, 1.0f); m_simpleLabel->setColor(71.0f/255.0f, 166.0f/255.0f, 248.0f/255.0f, 0.6f); m_simpleLabel->addSize(100.0f, 20.0f); m_simpleLabel->setShadow(0.08f); //m_simpleLabel->setCanFill(true); m_simpleLabel->setImage("data/icon/xsk.png"); m_simpleLabel->setTexCoord(0.0f, 0.0f, osgWidget::Widget::LOWER_LEFT); m_simpleLabel->setTexCoord(1.0f, 0.0f, osgWidget::Widget::LOWER_RIGHT); m_simpleLabel->setTexCoord(1.0f, 1.0f, osgWidget::Widget::UPPER_RIGHT); m_simpleLabel->setTexCoord(0.0f, 1.0f, osgWidget::Widget::UPPER_LEFT); } // 解决中文展示问题（采用宽字节） std::wstring s_ws; gb2312ToUnicode(title.toLocal8Bit().toStdString(), s_ws); m_simpleLabel->setLabel(s_ws.c_str()); reDrawBillboard(); } void DT_Billboard::addItem(const QString &text, int id) { if( m_detailLabels.contains(id) ) return; osg::ref_ptr<osgWidget::Label> label = new osgWidget::Label(m_id + QString::number(id).toStdString()); label->setFont("fonts/simhei.ttf"); label->setFontSize(13); label->setFontColor(36.0f/255.0f, 36.0f/255.0f, 36.0f/255.0f, 1.0f); label->addSize(100.0f, 20.0f); label->setColor(1.0f, 1.0f, 1.0f, 0.6f); label->setShadow(0.08f); //label->setCanFill(true); label->setImage("data/icon/xsk.png"); label->setTexCoord(0.0f, 0.0f, osgWidget::Widget::LOWER_LEFT); label->setTexCoord(1.0f, 0.0f, osgWidget::Widget::LOWER_RIGHT); label->setTexCoord(1.0f, 1.0f, osgWidget::Widget::UPPER_RIGHT); label->setTexCoord(0.0f, 1.0f, osgWidget::Widget::UPPER_LEFT); // 解决中文展示问题（采用宽字节） std::wstring s_ws; gb2312ToUnicode(text.toLocal8Bit().toStdString(), s_ws); label->setLabel(s_ws.c_str()); m_detailLabels.insert(id,label); reDrawBillboard(); } int DT_Billboard::getDetailSize() { return m_detailLabels.size(); } void DT_Billboard::updateItem(int number, const QString &text) { std::wstring s_ws; DT_Billboard::gb2312ToUnicode(text.toStdString(), s_ws); osg::ref_ptr<osgWidget::Label> label = m_detailLabels.value(number); if( label ) label->setLabel(s_ws.c_str()); } void DT_Billboard::setPos(osg::Vec3 pos) { m_pos = pos; pos = m_pos + m_offset; this->setOrigin(pos.x(), pos.y()); this->update(); } void DT_Billboard::setOffset(osg::Vec3 offset) { m_offset = offset; offset = m_pos + m_offset; this->setOrigin(offset.x(), offset.y()); this->update(); } void DT_Billboard::setDetailVisible(bool b) { m_isVisible = b; if( m_isVisible ) { reDrawBillboard(); } else { clearDetail(); } } bool DT_Billboard::getDetailVisible() { return m_isVisible; } void DT_Billboard::setSimpleBackground(unsigned int r, unsigned int g, unsigned int b, unsigned int a) { m_simpleLabel->setColor(r/255.0f, g/255.0f, b/255.0f, a/255.0f); } osg::Vec3d DT_Billboard::getTargetPos() { osg::PositionAttitudeTransform *pos = dynamic_cast<osg::PositionAttitudeTransform *>(m_positionNode); return pos->getPosition(); } std::string DT_Billboard::getID() { return m_id; } void DT_Billboard::createLine(const osg::Vec3 &startPt, const osg::Vec3 &endPt) { if (NULL == m_line) { //创建标牌和模型之间的连接线 m_line = new osg::Geometry; osg::Vec3Array* vertices = new osg::Vec3Array; vertices->push_back(startPt); vertices->push_back(endPt); m_line->setVertexArray(vertices); osg::Vec3Array* normals = new osg::Vec3Array; normals->push_back(osg::Vec3(0.0f,0.0f,1.0f)); m_line->setNormalArray(normals); m_line->setNormalBinding(osg::Geometry::BIND_OVERALL); osg::Vec4Array* colors = new osg::Vec4Array; colors->push_back(osg::Vec4(84.0f/255.0f, 213.0f/255.0f, 254.0f/255.0f, 1.0)); m_line->setColorArray(colors); m_line->setColorBinding(osg::Geometry::BIND_OVERALL); m_line->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINE_STRIP,0,2)); m_line->getOrCreateStateSet()->setMode(GL_BLEND,osg::StateAttribute::ON); m_line->getOrCreateStateSet()->setAttributeAndModes(new osg::LineWidth(0.8f),osg::StateAttribute::ON); m_line->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN); m_geode->setName(m_id.c_str()); m_geode->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF); m_geode->addDrawable(m_line); this->getWindowManager()->addChild(m_geode); } else { //动态更新线长 osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(m_line->getVertexArray()); (*vertices)[0].set( startPt.x(), startPt.y(), 0.0 ); (*vertices)[1].set( endPt.x(), endPt.y(), 0.0 ); vertices->dirty(); m_line->setVertexArray(vertices); m_line->dirtyDisplayList(); } } void DT_Billboard::delLine() { m_geode->removeDrawable(m_line); } void DT_Billboard::gb2312ToUnicode(const std::string &src, std::wstring &result) { int n = MultiByteToWideChar( CP_ACP, 0, src.c_str(), -1, NULL, 0 ); result.resize(n); ::MultiByteToWideChar( CP_ACP, 0, src.c_str(), -1, (LPWSTR)result.c_str(), result.length()); } void DT_Billboard::unicodeToUTF8(const std::wstring &src, std::string &result) { int n = WideCharToMultiByte( CP_UTF8, 0, src.c_str(), -1, 0, 0, 0, 0 ); result.resize(n); ::WideCharToMultiByte( CP_UTF8, 0, src.c_str(), -1, (char*)result.c_str(), result.length(), 0, 0 ); } void DT_Billboard::gb2312ToUtf8(const std::string &src, std::string &result) { std::wstring strWideChar; gb2312ToUnicode(src, strWideChar); unicodeToUTF8(strWideChar, result); } bool DT_Billboard::mouseDrag(double, double, const osgWidget::WindowManager *) { m_isMouseDrag = true; return true; } bool DT_Billboard::mousePush(double, double, const osgWidget::WindowManager *) { m_isMousePush = true; return true; } bool DT_Billboard::mouseRelease(double, double, const osgWidget::WindowManager *) { if(!m_isMouseDrag) { if(m_isMousePush) { setDetailVisible(m_isItemVisible); m_isItemVisible = !m_isItemVisible; } } m_isMousePush = false; m_isMouseDrag = false; return true; } void DT_Billboard::onMouseEvent(c