Brushes are solid objects that cannot be modified or moved dynamically during gameplay, except if they have a break-point specified in the asset file, for example a breakable wooden shack.
Typically brushes are static objects placed in the world. They are one of the cheapest rendered objects in the world as they don't have any of the entity or physics overhead of other objects.
A large percentage of the visual structures in your worlds will probably be constructed using brushes.
Object Browser and Preview
The Browser pane shows the contents of the
The total number of files is listed at the bottom of the pane.
The Filter text box enables you to display objects with a selected keyword in the title. To use it, simply start typing into the filter box and the browser list will filter out any objects that don't match the current search.
The number of files matching the search will be displayed under the Filter text box.
Click Reload when you add a new object to the library, when you change an object in the DCC package and want the geometry to be updated, or to make the filter take effect.
A preview of the selected object will be displayed in this section.
Once you have placed a Brush in the level, select it to view its properties.
Brush Params are a basic set of parameters shared by all Brushes.
The DrawLast checkbox gives designers per-object control over alpha-sorting issues such as particle effects in front of glass objects.
In the example seen below, the background glass dome panels use 50% opacity and are incorrectly rendered in front of the particle effect.
By setting DrawLast to true for the background dome object, the engine knows that any alpha based objects rendered between the player and itself should take ordering priority.
Brush 是一个不能修改的实体对象，除非如果它们在资源文件中有指定断点，例如房屋。通常 Brush 作为静态对象放置在世界中，它们是世界中最便宜的渲染对象之一，因为它们没有其他对象的任何实体或物理开销。世界中占有相当大百分比的可视结构将会使用 brush 来构造。
浏览器窗格显示的是 Game\Objects.pak 文件的内容并包含诸如武器、交通工具和道具等对象。文件的数量列在窗格底部。
在过滤器文本框中，您可以使用在标题中选择的关键字显示对象，输入*关键字* 然后单击*重载*或按 Enter 键，则在浏览器列表中将只显示与关键字相匹配的条目。将会在“过滤器”文本框下显示包含有输入关键字的文件的数量。
当添加一个新对象到库中时，当在 DCC 包中改变一个对象且需要更新几何体或使过滤器生效时，请单击*重载*。
Brush 参数是所有 Brush 共享参数的基本设置。