Macro Image Scaling/en

Description
Macro for easy scaling drawings, graphics, diagram, blueprint and similar 2D images in Image workbench. It works for images imported as planar image in the 3D space.

Note: For photos of objects, or images of this kind, must keep in mind the effect of Parallax (distortion due to "difference in the apparent position of an object viewed along two different lines of sight"), or Perspective as described in the pictures below:



In the second diagram, the red and green objects are not co-planar with the 2 blue objects and scaling can not be used. Additionally the fact that the red object is co-planar with 1 blue object can not be determined from the single diagram based on the user viewpoint:



Use

 * run the Macro - a dialogue pops up
 * click on the two points in the image that you know the true distance between
 * Select the Image Plane in the tree view
 * Enter the true distance in mm between the points in the text field of the dialogue and click OK
 * The image is scaled and the dialogue closes.

Links

 * [Forum discussion]
 * [Download zip]