I have found a way to report relatives angles of two lines to create a third line using a fourth line as reference and I think it’s a tool that is missing.
I hope I’m explaining that clearly, let’s bring a drawing. We want to report the angle of Line1 in relation to Line 2 to create Line 4 in relation to Line 3
The calculation is in fact easy and just : AngleLine1-AngleLine2+AngleLine3
[quote=“Castiane, post:1, topic:16742”]
Of course it depends on which way the llines were drawn, but why not Just use AngleLine1-AngleLine2+AngleLine3 in the formula? If we were to add a tool for every way to simply formulas, there would not be enough room in the toolbox.
Besides… such a tool would require giving 7 points to produce the endpoint of line 4 (Line_?_?).
Let me ask you this… would you rather I work on new features - like adding symbols, button holes and the like - or a way to speed up what can already be done with a simple formula?
I think working on the tool is better for the community. The formula to report relatives angles is nowhere to be found and it’s a missing point of the software. I had to deduct it empirically. I can do it but I don’t know if other can or now how to.
One exemple when I’m working on my basic bloc and need a line to prolong from the front to the back I need it to be straight when sewn. But with the angle of the hips I cannot use the same angle of the front to the back. If there is another method to report the angle with the tools already presents I’d be pleased to discover them
Sometimes the +90/etc doesn’t work I’m searching a formula to fix this !
How so? This tool would seem to only satisfy the needs of the one. Being able to add symbols, text , buttonholes, darkmode, a better layout engine, ASTM export, plotter support, etc… satisfies the needs of the many. You’re asking for something that can already be done with a simple formula, and it makes no sense spending valuable time implementing, but you’re free to do so.
Yes, everyone wants to do something different, so it’s difficult to provide tools that will do exactly what each one wants to do. This is why we have a few basic tools and the possiblity of endless formulas to achieve our end results.
This also creates the challenge gives us such emense satisfaction when we do create a pattern that looks beautiful once it has been made up into a garment. It’s our secret pay-cheque that gives us such a sense of achievement and keeps us making sewing patterns. If it was all done by the software, we’d need to spend hours looking through a whole bunch to tools (that otherwise would only decorate the toolboxes) to find the exact one needed to do something, anyway. So, I agree with @Douglas that it would be better that he work on the notions and pattern making icons and implementations.
The secret to successful formulas is in identifying where you are coming from and where you are going to. In the case of the side seam at the hip level, your formula is correct in minussing the one baseline and adding the other to the formula and then mirroring by adding/subtracting the 180°. However, you can also use the angle of control handles of curves for this purpase.
If you send me your pattern, I will be happy to have a look at it to try and find the ideal formula.