[feature]: 希望达到的效果。

[vtamsky]

Area

CAD / engineering / 3D

User problem and use case

白底彩线不适宜观看，黑底彩线适合观看；另外，打印输出文件(pdf/jpg/png等)可输出为黑白线段

Proposed outcome

白底彩线不适宜观看，黑底彩线适合观看；另外，打印输出文件(pdf/jpg/png等)可输出为黑白线段

Samples, specifications, or references

No response

Alternatives considered

No response

Dependency and license notes

No response

Required confirmations

• I searched existing issues and the roadmap for the same request.
• This request describes one focused user outcome.