图像模块

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简介

图像工作台用于管理不同类型的位图图像,用户可借此在FreeCAD中打开这些图像。

目前,该模块已支持打开BMP,JPG,PNG与XPM文件格式。

工具

  • Open: 在新的视口中打开图像。
  • Import to plane: 将图像导入至3D视图中的平面内。
  • Scaling: 对导入至平面内的图像进行缩放处理。

特性

  • 草图相似,我们可将导入的图像附于XY,XZ或YZ主平面之一,并为之调整正、负偏移值。
  • The image is imported with relation of 1 pixel to 1 millimeter.
  • 建议导入具有合理分辨率的图像。

工作流程

图形工作台的一个主要用途就是借助底图草图工具对目标图像进行描边,即为了基于目标图像的轮廓来生成对应实体。

Tracing over an image works best if the image has a small negative offset, for example, -0.1 mm, from the working plane. This means that the image will be slightly behind the plane where you draw your 2D geometry, so you won't draw on the image itself.

The offset of the image can be set during import, or changed later through its properties.