Need a little help to get started...
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Hi everyone.
Well today is the day I decided I really need to learn to basics of DC's as I am helping a mate with his kitchen and he wants me to give him DXF files with cabinet parts (shapes of panels with drill marks on them)
So I thought......What an easy way to introduce myself to DC's......FAIL !!
As an example of what I set out to do....
I created a small panel.
I then created a 3mm crosshair to place on the panel. I want these marks to remail 25mm in from each end and one in the centre. I also want them to be 8mm up from the bottom.
I set up two input boxes to set the size of the panel.
Before I tried to add a formula to parametrically position these marks, I found that when I resized the panel the marks were squashing or stretching.Now I don't think I could have chosen a more simple thing to start learning DC's but I am stumped already and not being one for thinking like a programmer I will probably remain stumped!
Can anyone help start me off with this as I have lots of drill mark options I need to explore but I just need to get through this first hurdle.
cheers...Wayne
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Hi Wayne,
To keep the crosshairs from becoming distorted, you need to constrain their length and width. Do this by setting their LenX and LenY attributes to
=3mm. (Assume you are working on the Red-Green plane.)If you change the origin of the crosshairs to be at their centers, this will make the position formulas simpler. (Assume you wll use 3 unique crosshair components.)
With the origin at center, the middle crosshair can have a position of
panelWidth / 2The left crosshair would have a position of
=25mm, and the right a position ofpanelWidth - 25I've attached an example file - open it in SketchUp (rather than Import it in SketchUp.)
I've shown a different technique for the crosshairs in the file. Instead of using 3 unique crosshar components, I use the Copies attribute to create the 2 extra copies (so there a 3 total crosshair components.) Then use some nested IF statements to set the crosshair position based on their Copy number.
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Thanks so much Jim. That gives me a simple insight and a kick start!
I don't think I'll get into the if statements just yet but I will work toward it for sure.
cheers...Wayne
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