本文整理汇总了C++中geom::Affine::isIdentity方法的典型用法代码示例。如果您正苦于以下问题：C++ Affine::isIdentity方法的具体用法？C++ Affine::isIdentity怎么用？C++ Affine::isIdentity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geom::Affine的用法示例。
在下文中一共展示了Affine::isIdentity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:
/**
* Set additional transform for the group.
* This is applied after the normal transform and mainly useful for
* markers, clipping paths, etc.
*/
void
DrawingGroup::setChildTransform(Geom::Affine const &new_trans)
{
Geom::Affine current;
if (_child_transform) {
current = *_child_transform;
}
if (!Geom::are_near(current, new_trans, 1e-18)) {
// mark the area where the object was for redraw.
_markForRendering();
if (new_trans.isIdentity()) {
delete _child_transform; // delete NULL; is safe
_child_transform = NULL;
} else {
_child_transform = new Geom::Affine(new_trans);
}
_markForUpdate(STATE_ALL, true);
}
}