[illusory engine UE] method to realize close-range rotation of operating objects under fuzzy background and pit recording

Achieve the goal ：

Success method ：

1. Add a post depth of field filter with blur effect to the scene
2. When entering the observation state , Move the box of the post blur effect to the corresponding position .
3. The practice of later depth of field filter is shown in the official learning tutorial video , Just follow the steps , Specific parameters need further debugging .

The following is not the text

Supplement the failed method used to record the attempt （ Record on pit ）：
1. Add a plane in front of the camera , And give the ground glass material
2. stay UI Add blur effect , And add dynamic snap material
3. Directly change the camera depth of field （ Don't know how to do It doesn't look like a star QUQ）

Method 1. Add a plane in front of the camera , And give the ground glass material
Specific tutorial address ：https://www.bilibili.com/video/av75800992/

The method and parameters of creating materials are as follows ：


Material effect ：

What happened ： White edge exception appears .

And there will be ugly diffuse reflection and embedded floor phenomenon .

Method 2. stay UI Add blur effect , And add dynamic snap material

Specific tutorial address ：https://zhuanlan.zhihu.com/p/260716849

First add the snaps , Set... In the details panel PrimitiveRenderMode by show only actors.

Here it is show only actors Array assignment , There are many ways , Use the simplest ：

Create a render material


Material creation and setting

And then put UI Add it to the place where it should be added , This is what the original tutorial did

UI The embedded image Material mapping camera dynamic capture results

The effect I made ……

The problem is ： The clarity of this method is not good （ Even if the resolution is very high , And it didn't work well , Return the card ）