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Image (New Custom Feature!)
MichaelPascoe Member Posts: 1,283 PRO
edited March 1 in FeatureScript
Image (New Custom Feature!)https://cad.onshape.com/documents/f7a45d78c374497d37c1d2cb/w/04c6c220e40120d79db4c05e/e/161ce64bb947e34f19588b33?renderMode=0&uiState=63ffb066af4a881b3447d2c9
Image allows you to:
- Quickly place images in the part studio without having to sketch
- Reference geometry for the image size
- Change the transparency of the image
Special thanks to @billy2 at rustyshed.com for collabing this with me. He is responsible for:
- X & Y Center %
- Aspect ratio
- Image height & width
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Image - Tutorial
The one big issue is that lots of times the most challenging part is scaling the image correctly based on some known distance on the image which is not directly related to the overall length/width of the image. That alone will probably keep me using the existing workflow inside the sketcher. I'd love to see some of this functionality built into the 1st party native tools.
I would add things like mirror (left/right and top/bottom) as well. Some simple background removal shouldn't be that hard to add to a first party tool. With the state of AI image processing there must be open source versions of such functions.
One way I look at it is that as an Onshape user, I don't want to have to open an image editing program to get something that's clean and easy to use in this type of context.
This is absolutely fantastic! Thanks for sharing. As an FYI, I just logged a support ticket regarding images inserted into a sketch. Apparently, OnShape has issues (I was getting a solid black image) if the image has a width greater than 4096 pixels (ish).
My biggest issue is that OnShape will not just insert the image at its original scale. For instance, I traced a large object on paper and then scanned it on a wide format scanner. When I insert the scanned image into OnShape, it requires me to sketch a box which messes up the original scale. I then have to resize it which introduces errors. When I insert the same image in Coreldraw or Illustrator it doesn't mess the scale up.
Image formats (JPG, PNG, GIF) don't necessarily say how big they are in real world units. Some formats do. Many image files may just have pixel dimensions, and then it's entirely dependent on pixels per mm or pixels per inch or whatever. Even if the image has both a pixel size and a number of pixels per real world unit, I haven't seen a CAD program where it takes that into account for the default scale. It could be helpful, as you point out in some cases.
In Onshape, after you insert the image, and before you've constrained and dimensioned everything (sketch is still all blue), you can add a line on top of a known distance on the image, add a dimension to that line and then set it to the correct size. That will scale the whole sketch correctly. Then you can constrain things however you need/want.
It was great collaborating with Michael on this feature script. Michael is really good at creating feature scripts and CAD Sharp is a great place to have custom scripts created.
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