本文整理汇总了C++中osg::Matrix::makeFrustum方法的典型用法代码示例。如果您正苦于以下问题：C++ Matrix::makeFrustum方法的具体用法？C++ Matrix::makeFrustum怎么用？C++ Matrix::makeFrustum使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类osg::Matrix的用法示例。
在下文中一共展示了Matrix::makeFrustum方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: computeDefaultViewProj
void ScreenBase::computeDefaultViewProj(osg::Vec3d eyePos, osg::Matrix & view,
osg::Matrix & proj)
{
//translate screen to origin
osg::Matrix screenTrans;
screenTrans.makeTranslate(-_myInfo->xyz);
//rotate screen to xz
osg::Matrix screenRot;
screenRot.makeRotate(-_myInfo->h * M_PI / 180.0,osg::Vec3(0,0,1),
-_myInfo->p * M_PI / 180.0,osg::Vec3(1,0,0),
-_myInfo->r * M_PI / 180.0,osg::Vec3(0,1,0));
eyePos = eyePos * screenTrans * screenRot;
//make frustum
float top, bottom, left, right;
float screenDist = -eyePos.y();
top = _near * (_myInfo->height / 2.0 - eyePos.z()) / screenDist;
bottom = _near * (-_myInfo->height / 2.0 - eyePos.z()) / screenDist;
right = _near * (_myInfo->width / 2.0 - eyePos.x()) / screenDist;
left = _near * (-_myInfo->width / 2.0 - eyePos.x()) / screenDist;
proj.makeFrustum(left,right,bottom,top,_near,_far);
// move camera to origin
osg::Matrix cameraTrans;
cameraTrans.makeTranslate(-eyePos);
//make view
view = screenTrans * screenRot * cameraTrans
* osg::Matrix::lookAt(osg::Vec3(0,0,0),osg::Vec3(0,1,0),
osg::Vec3(0,0,1));
}