| terrain | 用于为此 PaintContext 定义地形空间的地形。 |
| pixelRect | 要在目标地形纹理中编辑的像素矩形。 |
| targetTextureWidth | 目标地形纹理的宽度（按照地形）。 |
| targetTextureHeight | 目标地形纹理的高度（按照地形）。 |
创建新的 PaintContext，从而编辑 pixelRect 所定义区域中的地形上的目标纹理。
此构造函数在相邻的连接地形瓦片之间进行搜索，从而查找接触 pixelRect 的所有地形瓦片。
它还计算每个地形上的相关区域，以及区域之间的变换。
另请参阅：PaintContext
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.