Perspective Scaling

Grab and move objects around the world while maintaining the same viewport size.

This is a project containing the plugin 'Perspective Scaling' and a project that displays the plugin in action.

How to set up

• Copy the folder Plugins/PerspectiveScaling to the Plugins folder in the project root directory that will use this plugin.
• Then in the UE4 editor: Edit->Plugins->Project->Perspective Scaling. Enable the plugin.
• Add a Perspective Scaling Component to an actor. This actor should be similar to the FirstPerson example project. This will provide the actor with the ability to pick up objects and move/scale them.
• Create an action, called e.g. ObjectGrab. Within the actor that has the Perspective Scaling Component bind this action to the component function Toggle Grabbed Object. See image below.
• Add a trace channel to the project called PerspectiveScale. Set any object to block this if it can be picked up and scaled.

Try it out

The provided .uproject file shows off the plugin in a ready-to-use map.

Issues

Only tested for engine version 4.21. Will only pick up and scale StaticMeshActors.

Inspired by the reddit post by BojanV03 https://www.reddit.com/r/unrealengine/comments/glfx9j/small_breakdown_i_made_of_how_forced_perspective/. Using Actor bounds rather than mesh vertices for performance improvement.