#include <Windows.h>
#include <osg/Geode>
#include <osg/Geometry>
#include <osgText/Text>
#include <osgViewer/Viewer>
#include <locale.h>
#include <osgDB/ReadFile>
void setupProperties(osgText::Text& textObject,osgText::Font* font,float size,const osg::Vec3& pos )
{
textObject.setFont(font);//
textObject.setCharacterSize(size);//字体大小
textObject.setPosition(pos);
textObject.setColor(osg::Vec4(1.0,1.0,1.0,1.0));
textObject.setAlignment(osgText::Text::CENTER_BOTTOM);//文字显示方向
//textObject.setAxisAlignment(osgText::Text::SCREEN);//获取文字对称成方式正对屏幕方向
//textObject.setCharacterSizeMode(osgText::Text::SCREEN_COORDS);//跟随视角不断变化,离物体越远,文字越大
textObject.setAutoRotateToScreen(true);//跟随视角不断变化,但离物体越远,文字越小,和现实当中像类似
textObject.setBackdropType(osgText::Text::OUTLINE);//对文字进行描边
textObject.setBackdropColor(osg::Vec4(1.0,0.0,0.0,1.0));//描边颜色
textObject.setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);//添加文字边框
textObject.setAxisAlignment(osgText::Text::XZ_PLANE);//获取文字对称成方式
}
void createContent(osgText::Text& textObject,const char* string)
{
int requiredSize=mbstowcs(NULL,string,);//如果mbstowcs第一参数为NULL那么返回字符串的数目
wchar_t* wText=new wchar_t[requiredSize+];
mbstowcs(wText,string,requiredSize+);//由char转换成wchar类型
textObject.setText(wText);
delete wText;
}
int main()
{
setlocale(LC_ALL,".936");// 配置地域化信息
const char* titleString="木兰辞\n拟古决绝词简友";
const char* textString={
"人生若只如初见,何事秋风悲画扇;\n"
"等闲变却故人心,却道故人心易变;\n"
"骊山语罢倾销半,夜雨霖铃终不怨;\n"
"何如薄幸锦衣郎,比翼连枝当日愿。"
};
osgText::Font* fontHei=osgText::readFontFile("C:\\WINDOWS\\Fonts\\simhei.ttf");
osgText::Font* fontKai=osgText::readFontFile("C:\\WINDOWS\\Fonts\\simkai.ttf");
osg::ref_ptr<osgText::Text> title=new osgText::Text;
setupProperties(*title,fontHei,20.0f,osg::Vec3(0.0,0.0,0.0));
createContent(*title,titleString);
osg::ref_ptr<osgText::Text> text=new osgText::Text;
setupProperties(*text,fontKai,15.0,osg::Vec3(0.0,0.0,-80.0f));
createContent(*text,textString);
osg::ref_ptr<osg::Geode> geode=new osg::Geode;
geode->addDrawable(osg::createTexturedQuadGeometry(osg::Vec3(-150.0,1.0,-130.0),osg::Vec3(300.0,0.0,0.0),osg::Vec3(0.0,0.0,200.0),1.0,1.0));//创建一个写字板
geode->addDrawable(title.get());
geode->addDrawable(text.get());
osgViewer::Viewer viewer;
viewer.setSceneData(geode.get());
return viewer.run();
}