OsgEarth添加圆锥体

#pragma once
#include <osg/Node>
#include <osg/MatrixTransform>
#include "Pendant.h"//三维实体的圆锥波束class WaveBeamCone :public Pendant {public:WaveBeamCone();~WaveBeamCone();void clearSelf()override;//创建圆锥形波束void createWaveBeamCone(osg::MatrixTransform* node,double angle, double length, osg::Vec4 color, osg::Vec4 lineColor, double lineWidth);//改变锥形波束的目标点，mt=波束的节点，latitude, longitude, height目标点的坐标，ifDynamic=是否打开动态跟踪，如果是false，则波束只会改变一次朝向，模型运动的时候，波束的方向不变，如果为true，则波束会跟踪目标点，实现动态的方向更改。void changeWaveBeamConeTarget(/*osg::MatrixTransform* mt,*/ double latitude, double longitude, double height, bool ifDynamic);//改变锥形波束的外观，color=波束颜色 lineColor=线的颜色 lineWidth=线的宽度 注意最后一个参数线宽，如果小于0.1，则线会被隐藏void changeWaveBeamConeAppearance(osg::Vec4 color, osg::Vec4 lineColor, double lineWidth);osg::ref_ptr<osg::MatrixTransform> getWaveBeamCone() {return _waveBeamCone;}
private:osg::ref_ptr<osg::MatrixTransform> _waveBeamCone;
};

#include "WaveBeamCone.h"
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/Material>
#include <osgFX/Outline>
#include <osgFX/Scribe>
#include <osg/MatrixTransform>
#include "WaveBeamConeCallBack.h"
#include "EarthMapManager.h"WaveBeamCone::WaveBeamCone() :Pendant(PST3D_WAVEBEAN_CONE) {}WaveBeamCone::~WaveBeamCone() {}void WaveBeamCone::clearSelf() {}void WaveBeamCone::createWaveBeamCone(osg::MatrixTransform* node, double angle, double length, osg::Vec4 color, osg::Vec4 lineColor, double lineWidth) {double angleD = osg::DegreesToRadians(angle);double radius = std::tan(angleD*0.5) * length;int splitCount = 20;double angleStep = osg::PI * 2.0 / splitCount;osg::ref_ptr<osg::Geode> geode = new osg::Geode();osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;osg::ref_ptr<osg::Vec3Array> vertex = new osg::Vec3Array;osg::ref_ptr<osg::Vec3Array> normal = new osg::Vec3Array;osg::ref_ptr<osg::DrawElementsUInt> drawElemUInt = new osg::DrawElementsUInt(GL_TRIANGLE_FAN);osg::ref_ptr<osg::DrawElementsUInt> drawElemUInt2 = new osg::DrawElementsUInt(GL_TRIANGLE_FAN);geom->setVertexArray(vertex);geom->setNormalArray(normal);geode->addDrawable(geom);vertex->push_back(osg::Vec3(0, 0, 0));drawElemUInt->push_back(0);normal->push_back(osg::Vec3(0, -1, 0));//侧面for (int i = 0; i <= splitCount; i++) {double tempAngle = i*angleStep;osg::Vec3 pos(radius * cos(tempAngle), length, radius * sin(tempAngle) + 3);vertex->push_back(osg::Vec3(pos));pos.normalize();normal->push_back(pos);drawElemUInt->push_back(i + 1);}//底面int indexBegin = vertex->size();vertex->push_back(osg::Vec3(0, length, 0));drawElemUInt2->push_back(indexBegin);normal->push_back(osg::Vec3(0, 1, 0));for (int i = 0; i <= splitCount; i++) {double tempAngle = i*angleStep;osg::Vec3 pos(radius * cos(tempAngle), length, radius * sin(tempAngle) + 3);vertex->push_back(osg::Vec3(pos));normal->push_back(osg::Vec3(0, 1, 0));drawElemUInt2->push_back(indexBegin + i + 1);}geom->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);geom->addPrimitiveSet(drawElemUInt);geom->addPrimitiveSet(drawElemUInt2);//创建材质对象osg::ref_ptr<osg::Material> mat = new osg::Material;//设置正面散射颜色mat->setDiffuse(osg::Material::FRONT, color);//1.0, 0.0, 0.0, 0.3//设置正面镜面颜色mat->setSpecular(osg::Material::FRONT, color);//1.0, 0.0, 0.0, 0.3geode->getOrCreateStateSet()->setAttribute(mat.get());geode->getOrCreateStateSet()->setMode(GL_RESCALE_NORMAL, osg::StateAttribute::ON);//设置透明效果geode->getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);geode->getOrCreateStateSet()->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);geode->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);//设置渲染顺序 仿真模型被波束遮盖 ,1000000-指的是若有1000000个Node 则此节点最后一个被渲染geode->getOrCreateStateSet()->setRenderBinDetails(1000000, "RenderBin");osg::ref_ptr<osgFX::Scribe>  nodeFX = new osgFX::Scribe;nodeFX->setWireframeColor(lineColor);nodeFX->setWireframeLineWidth(lineWidth);nodeFX->addChild(geode);osg::ref_ptr<osg::MatrixTransform> mtCone = new osg::MatrixTransform;mtCone->addChild(nodeFX);//给callback中赋值WaveBeamConeCallBack* coneCallBack = new WaveBeamConeCallBack;coneCallBack->m_angle = angle;coneCallBack->m_length = length;coneCallBack->m_color = color;coneCallBack->m_lineColor = lineColor;coneCallBack->m_lineWidth = lineWidth;coneCallBack->m_geode = geode;coneCallBack->m_geom = geom;coneCallBack->m_pointVector = vertex;coneCallBack->m_nodeFX = nodeFX;//如果线宽小于0.1，则关闭线框显示效果if (lineWidth < 0.1) {mtCone->addChild(coneCallBack->m_geode);mtCone->removeChild(coneCallBack->m_nodeFX);} else {mtCone->removeChild(coneCallBack->m_geode);mtCone->addChild(coneCallBack->m_nodeFX);}mtCone->setUpdateCallback(coneCallBack);mtCone->addDescription("WaveBeamCone");//添加到模型中osg::MatrixTransform* mtR = dynamic_cast<osg::MatrixTransform*>(node->getChild(0));osg::MatrixTransform* mtS = dynamic_cast<osg::MatrixTransform*>(mtR->getChild(0));mtR->addChild(mtCone);_waveBeamCone = mtCone;
}void WaveBeamCone::changeWaveBeamConeTarget(double latitude, double longitude, double height, bool ifDynamic) {WaveBeamConeCallBack* coneCallBack = dynamic_cast<WaveBeamConeCallBack*>(_waveBeamCone->getUpdateCallback());if (coneCallBack != NULL) {coneCallBack->m_ifDynamic = ifDynamic;coneCallBack->m_latitude = latitude;coneCallBack->m_longitude = longitude;coneCallBack->m_height = height;if (ifDynamic == false) {osg::MatrixTransform* mtCone = _waveBeamCone;osg::MatrixTransform* mtR = dynamic_cast<osg::MatrixTransform*>(mtCone->getParent(0));osg::MatrixTransform* mt = dynamic_cast<osg::MatrixTransform*>(mtR->getParent(0));//osg::Matrix m = osg::computeWorldToLocal(mtCone->getParentalNodePaths().at(0));osg::Matrix m = osg::Matrix::inverse(mt->getMatrix()*mtR->getMatrix());osg::Matrix mTarget;double x, y, z;EarthMapMgr()->getMapNode()->getMapSRS()->getEllipsoid()->convertLatLongHeightToXYZ(osg::DegreesToRadians(latitude),osg::DegreesToRadians(longitude),height, x, y, z);mTarget.setTrans(x, y, z);osg::Matrix mConeRate = osg::Matrix::rotate(osg::Vec3d(0, 1, 0), (mTarget*m).getTrans());mtCone->setMatrix(mConeRate);}}
}void WaveBeamCone::changeWaveBeamConeAppearance( osg::Vec4 color, osg::Vec4 lineColor, double lineWidth) {WaveBeamConeCallBack* coneCallBack = dynamic_cast<WaveBeamConeCallBack*>(_waveBeamCone->getUpdateCallback());if (coneCallBack != NULL) {coneCallBack->m_color = color;coneCallBack->m_lineColor = lineColor;coneCallBack->m_lineWidth = lineWidth;//创建材质对象osg::ref_ptr<osg::Material> mat = new osg::Material;//设置正面散射颜色mat->setDiffuse(osg::Material::FRONT, color);//1.0, 0.0, 0.0, 0.3//设置正面镜面颜色mat->setSpecular(osg::Material::FRONT, color);//1.0, 0.0, 0.0, 0.3                      coneCallBack->m_geode->getOrCreateStateSet()->setAttribute(mat.get());if (lineWidth < 0.1) {_waveBeamCone->addChild(coneCallBack->m_geode);_waveBeamCone->removeChild(coneCallBack->m_nodeFX);} else {_waveBeamCone->removeChild(coneCallBack->m_geode);_waveBeamCone->addChild(coneCallBack->m_nodeFX);coneCallBack->m_nodeFX->setWireframeColor(lineColor);coneCallBack->m_nodeFX->setWireframeLineWidth(lineWidth);}}
}

#pragma once
#include <osg/Geometry>
#include <osgFX/Scribe>
#include <osg/NodeCallback>class WaveBeamConeCallBack : public osg::NodeCallback {public:WaveBeamConeCallBack();~WaveBeamConeCallBack();virtual void operator() (osg::Node *node, osg::NodeVisitor *nv);
public:double m_latitude;double m_longitude;double m_height;bool m_ifDynamic;double m_angle;double m_length;osg::Vec4 m_color;osg::Vec4 m_lineColor;double m_lineWidth;osg::ref_ptr<osg::Geode> m_geode;osg::ref_ptr<osg::Geometry> m_geom;osg::ref_ptr<osg::Vec4Array> m_colorArray;osg::ref_ptr<osg::Vec3Array> m_pointVector;osg::ref_ptr<osgFX::Scribe> m_nodeFX;
};

#include "WaveBeamConeCallBack.h"
#include "EarthMapManager.h"
#include <osg/MatrixTransform>WaveBeamConeCallBack::WaveBeamConeCallBack() {m_latitude = 0.0;m_longitude = 0.0;m_height = -6371000;m_ifDynamic = false;m_angle = 20.0;m_length = 100000;m_color = osg::Vec4(1, 0, 0, 0.5);m_lineColor = osg::Vec4(1.0, 0.0, 0.0, 1.0);m_lineWidth = 1.0;
}WaveBeamConeCallBack::~WaveBeamConeCallBack() {}void WaveBeamConeCallBack::operator()(osg::Node *node, osg::NodeVisitor *nv) {if (m_ifDynamic == false)return;//std::cout << "WaveBeamConeCallBack info=" << m_latitude << "," << m_longitude << "," << m_height << std::endl;osg::MatrixTransform* mtCone = dynamic_cast<osg::MatrixTransform*>(node);if (mtCone != NULL) {osg::MatrixTransform* mtR = dynamic_cast<osg::MatrixTransform*>(mtCone->getParent(0));osg::MatrixTransform* mt = dynamic_cast<osg::MatrixTransform*>(mtR->getParent(0));//osg::Matrix m = osg::computeWorldToLocal(mtCone->getParentalNodePaths().at(0));osg::Matrix m = osg::Matrix::inverse(mt->getMatrix()*mtR->getMatrix());osg::Matrix mTarget;double x, y, z;EarthMapMgr()->getMapNode()->getMapSRS()->getEllipsoid()->convertLatLongHeightToXYZ(osg::DegreesToRadians(m_latitude),osg::DegreesToRadians(m_longitude),m_height, x, y, z);mTarget.setTrans(x, y, z);osg::Matrix mConeRate = osg::Matrix::rotate(osg::Vec3d(0, 1, 0), (mTarget*m).getTrans());mtCone->setMatrix(mConeRate);//mTarget*m//更改cone的形状----------------------------------------double length = (mTarget*m).getTrans().length();double angle = osg::DegreesToRadians(m_angle);double radius = std::tan(angle*0.5) * length;int splitCount = 20;double angleStep = osg::PI * 2.0 / splitCount;//侧面for (int i = 1; i <= splitCount + 1; i++) {double tempAngle = (i - 1)*angleStep;osg::Vec3 pos(radius * cos(tempAngle), length, radius * sin(tempAngle) + 3);m_pointVector->at(i) = pos;}m_pointVector->at(splitCount + 2) = osg::Vec3(0, length, 0);//底面for (int i = splitCount + 3; i <= splitCount + 3 + splitCount; i++) {double tempAngle = (i - splitCount - 3) *angleStep;osg::Vec3 pos(radius * cos(tempAngle), length, radius * sin(tempAngle) + 3);m_pointVector->at(i) = pos;}m_geom->dirtyBound();m_geom->dirtyDisplayList();}
}

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