We can use this modifier to access data from GeometryProxy3D without using GeometryReader3D.<\/p>\n\n\n\n
We learned about There is another way we can access This modifier is a bit more complex than other SwiftUI modifiers. We provide the type of data we want from the geometry. Then extract the value we need from the\u00a0proxy\u00a0to make it available in the action closure. With those two steps done, we can use the action block to work with the data.<\/p>\n\n\n\nGeometryReader3D<\/a><\/code> in a previous example. This provides access to GeometryProxy3D<\/a><\/code>. We can use it modify our content based on changes to that proxy. For example, scaling the content of a RealityView when the size of a window or volume changes.<\/p>\n\n\n\nGeometryReader3D<\/code>. We can use onGeometryChange3D<\/code> instead of wrapping our view in a geometry reader. This lets us track only the data we need, instead of all changes to the proxy.<\/p>\n\n\n\n