On Fri, 5 Dec 2025 06:53:16 GMT, Ambarish Rapte <[email protected]> wrote:
> Doc of > [localToScreen()](https://openjfx.io/javadoc/24/javafx.graphics/javafx/scene/Node.html#localToScreen(double,double)): > Transforms a point from the local coordinate space of this Node into the > coordinate space of its Screen When the sub scene is of size (0, 0), then the > sub scene and so it's children will not be shown on screen. Printing a valid > screen coordinates with localToScreen() for nodes that are not shown on > screen, seems not correct. Rather, NaN would imply that something is not > correct / the node is not shown on screen. `localToScreen` is not specified to account for something being "shown" on screen. Instead, it answers the question: given a point in the local coordinate system of a node, which point on the screen does it correspond to? And _this_ question has a valid answer: In the limit, the screen coordinates of a point specified in a 0-size scene or a vanishingly small scene are the same. In fact, the only reason this API can't answer this question is not because of some deep lack of meaning for the 0-size case, but simply because the size of the scene appears as a denominator in the projection transform. ------------- PR Comment: https://git.openjdk.org/jfx/pull/1992#issuecomment-3617104296
