CPickHandler(osgViewer::Viewer *viewer); ~CPickHandler(void); osgViewer::Viewer *m_pViewer; virtualboolhandle(constosgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa); voidpick(floatfX,floatfY); }; #include"StdAfx.h" #include"PickHandler.h" CPickHandler::CPickHandler(osgViewer::View...
CPickHandler(osgViewer::Viewer *viewer); ~CPickHandler(void); osgViewer::Viewer *m_pViewer; virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa); void pick(float fX,float fY); }; #include "StdAfx.h" #include "PickHandler.h" CPickHandler::CPickHandler(osg...
void PickHandler::pick(osgViewer::View* view, const osgGA::GUIEventAdapter& ea){osgUtil::LineSegmentIntersector::Intersections intersections;//求集交互器float x = ea.getX();float y = ea.getY();//传入事件的x,y坐标if (view->computeIntersections(x,y,intersections))//...
至于为什么都用2的N次方,主要是因为它的二进制编码只有一位是一,判断事件时很好判断,只要年哪位是一就可以了。 1.5.3 PICK pick主要是通过鼠标的点击来拾取一些物体,或者判断鼠标所点击的位置在哪里。Pick实现的思路如下图所示: 图36pick事件流程 判断射线与viewer中物体相交的方法为发出射线并相交。在OSG中有库...
pick主要是通过鼠标的点击来拾取一些物体,或者判断鼠标所点击的位置在哪里。Pick实现的思路如下图所示: 判断射线与viewer中物体相交的方法为发出射线并相交。在OSG中有库函数,osgViewer::View::computeIntersections他共有三个参数:第一个是x屏幕坐标,第二个是Y屏幕坐标,第三个是存放被交的结点以及相交的坐标结点路径...
OSG中的示例程序简介 OSG中的⽰例程序简介 1.example_osganimate ⼀)演⽰了路径动画的使⽤(AnimationPath、AnimationPathCallback),路径动画回调可以作⽤在Camera、CameraView、MatrixTransform、PositionAttitudeTransform等四种类型的节点上。⼆)演⽰了osgSim::OverlayNode的使⽤ 2.example_osganimationease...
拾取pick、缩放 MyUserPickEventHandler.h #ifndef MYUSERPICKEVENTHANDLER_H #define MYUSERPICKEVENTHANDLER_H #include <osg/Node> #include <osgViewer/Viewer> class MyUserPickEventHandler : public osgGA::GUIEventHandler { public: MyUserPickEventHandler(); public: osg::ref_ptr<osg::MatrixTransform...
以下是最简单的节点拾取代码。仅仅用于测试节点拾取,设置点击后节点变为透明。 #include<osgViewer/Viewer>#include<osgDB/ReadFile>#include<osgGA/GUIEventHandler>class nodePick:public osgGA::GUIEventHandler{virtual boolhandle(constosgGA::GUIEventAdapter&ea,osgGA::GUIActionAdapter&aa){osgViewer::Viewer*viewe...
OSG中pick函数的使用 我想用OSG实现点选目标物体,同时得到选中目标的位置,看书上说可以用pick函数来实现这一功能,代码如下: class CPickHandler :public osgGA::GUIEventHandler { public: CPickHandle...获取shader中某个变量的值 在写shader时,经常想要看看某个变量在运行时的值是多少,通过两步实现: 1.在...
if (view) pick(view,*event); } return false; } default: return false; } } void PickHandler::pick(osgViewer::View* view, const osgGA::GUIEventAdapter& ea) { osgUtil::LineSegmentIntersector::Intersections intersections; std::string gdlist=""; ...