osg源码EagleEye，实现类似鹰眼图的效果

osg源码EagleEye，实现类似鹰眼图的效果~~~~~~~~~~~~~~~

#include 
#include 
#include 
#include 
#include 
#include 
#include 

#include “player.h“

osg::Camera* createHUDCamera（ osg::Viewport* viewport osg::Vec4d ortho2d int mask ）
{
	osg::Camera* mycamera = new osg::Camera;

	mycamera->setReferenceframe（ osg::Transform::ABSOLUTE_RF ）;
	mycamera->setViewport（ viewport ）;
	mycamera->setProjectionMatrixAsOrtho2D（ ortho2d.x（） ortho2d.y（） ortho2d.z（） ortho2d.w（） ）;
	mycamera->setRenderOrder（ osg::Camera::POST_RENDER ）;
	mycamera->setClearMask（ GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT ）;
	mycamera->getOrCreateStateSet（）->setMode（ GL_LIGHTING osg::StateAttribute::OFF ）;

	mycamera->setInheritanceMask（osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK）;
	mycamera->setCullMask（ mask ）;

	return mycamera;
}

int main（int argc char** argv）
{
	osg::ref_ptr maingeode = dynamic_cast（ osgDB::readNodeFile（ “glider.osg“ ） ）;
	maingeode->setNodeMask（ 0x01 ）;
	osg::ref_ptr subgeode = dynamic_cast（ osgDB::readNodeFile（ “simple.osg“ ） ）;
	subgeode->setNodeMask（ 0x02 ）;

	osg::ref_ptr eagleeye = createHUDCamera（ new osg::Viewport（1010320240） osg::Vec4d（-55-44） 0x02 ）;

	osg::ref_ptr root = new osg::Group;
	root->addChild（ eagleeye.get（） ）;

	for （ int i = 0; i < 3; i++ ）
	{

		osg::ref_ptr pat = new osg::PositionAttitudeTransform;
		pat->addChild（ maingeode.get（） ）;
		pat->addChild（ subgeode.get（） ）;

		osg::ref_ptryerState> player = new PlayerState（ osg::Vec3（（float）i 0.0 0.0） ）;
		pat->setEventCallback（ new PlayerCallback（player.get（） pat.get（）） ）;
		
		eagleeye->addChild（ pat.get（） ）;
		root->addChild（ pat.get（） ）;
	}

	osgViewer::Viewer viewer;
	viewer.setSceneData（ root.get（） ）;
	viewer.getCamera（）->setInheritanceMask（osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK）;
	viewer.getCamera（）->setCullMask（ 0x01 ）;

	PlayerHandler* playerctrl = new PlayerHandler（ 0 ）;
	viewer.addEventHandler（ playerctrl ）;
	
	return viewer.run（）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       4690  2008-09-17 17:32  EagleEye\EagleEye\EagleEye.vcproj

     文件       1427  2008-09-17 17:33  EagleEye\EagleEye\EagleEye.vcproj.CHINA-043DC02C3.Ray.user

     文件      42483  2006-02-02 10:56  EagleEye\EagleEye\glider.osg

     文件       2224  2008-09-17 17:32  EagleEye\EagleEye\main.cpp

     文件       2940  2008-03-12 12:38  EagleEye\EagleEye\player.h

     文件        601  2008-03-03 02:48  EagleEye\EagleEye\Simple.osg

     文件        890  2008-09-17 17:32  EagleEye\EagleEye.sln

     目录          0  2008-09-17 17:33  EagleEye\EagleEye

     目录          0  2008-09-17 17:33  EagleEye

----------- ---------  ---------- -----  ----

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