本文整理汇总了C++中osg::Matrix::isNaN方法的典型用法代码示例。如果您正苦于以下问题：C++ Matrix::isNaN方法的具体用法？C++ Matrix::isNaN怎么用？C++ Matrix::isNaN使用的例子？那么, 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::isNaN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: computeUnSquishedMatrix
bool AntiSquish::computeUnSquishedMatrix(osg::Matrix& unsquished) const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _cacheLock );
osg::NodePathList nodePaths = getParentalNodePaths();
if (nodePaths.empty()) return false;
osg::NodePath np = nodePaths.front();
if (np.empty()) return false;
// Remove the last node which is the anti squish node itself.
np.pop_back();
// Get the accumulated modeling matrix.
const osg::Matrix localToWorld = osg::computeLocalToWorld(np);
// reuse cached value
if ( !_cacheDirty && _cacheLocalToWorld==localToWorld )
{
unsquished = _cache;
return true;
}
osg::Vec3d t, s;
osg::Quat r, so;
localToWorld.decompose(t, r, s, so);
// Let's take an average of the scale.
double av = (s[0] + s[1] + s[2])/3.0;
s[0] = av; s[1] = av; s[2]=av;
if (av == 0)
return false;
//
// Final Matrix: [-Pivot][SO]^[S][SO][R][T][Pivot][LOCALTOWORLD]^[position]
// OR [SO]^[S][SO][R][T][LOCALTOWORLD]^
//
if (_usePivot)
{
unsquished.postMultTranslate(-_pivot);
osg::Matrix tmps, invtmps;
so.get(tmps);
if (!invtmps.invert(tmps))
return false;
//SO^
unsquished.postMult(invtmps);
//S
unsquished.postMultScale(s);
//SO
unsquished.postMult(tmps);
//R
unsquished.postMultRotate(r);
//T
unsquished.postMultTranslate(t);
osg::Matrix invltw;
if (!invltw.invert(localToWorld))
return false;
// LTW^
unsquished.postMult( invltw );
// Position
if (_usePosition)
unsquished.postMultTranslate(_position);
else
unsquished.postMultTranslate(_pivot);
}
else
{
osg::Matrix tmps, invtmps;
so.get(tmps);
if (!invtmps.invert(tmps))
return false;
unsquished.postMult(invtmps);
unsquished.postMultScale(s);
unsquished.postMult(tmps);
unsquished.postMultRotate(r);
unsquished.postMultTranslate(t);
osg::Matrix invltw;
if (!invltw.invert(localToWorld))
return false;
unsquished.postMult( invltw );
}
if (unsquished.isNaN())
return false;
_cache = unsquished;
_cacheLocalToWorld = localToWorld;
_cacheDirty = false;
//As Transform::computeBounde calls us without a node-path it relies on
//The cache. Hence a new _cache affects the bound.
const_cast<AntiSquish*>(this)->dirtyBound();
//.........这里部分代码省略.........