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Handle case where no tranform matrix exists.

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This commit is contained in:
Stuart Buchanan
2017-10-13 17:35:21 +01:00
parent d455f5f445
commit b57dca66be
1 changed files with 1 additions and 0 deletions
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simgear/canvas/elements/CanvasElement.cxx
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@@ -433,6 +433,7 @@ namespace canvas
osg::Vec2f Element::posToLocal(const osg::Vec2f& pos) const osg::Vec2f Element::posToLocal(const osg::Vec2f& pos) const
{ {
getMatrix(); getMatrix();
if (! _transform) return osg::Vec2f(pos[0], pos[1]);
const osg::Matrix& m = _transform->getInverseMatrix(); const osg::Matrix& m = _transform->getInverseMatrix();
return osg::Vec2f return osg::Vec2f
( (