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# 90 degree angle off a curve and flow off the curve?

o.k thank you I was selecting the garbage can icon and it wasn’t working.

How would I do a 90 degree angle off a curve and flow off the curve?

**kmf**#3

can you post your questions on the forum, please so others can see them. this one is a private message to me and I do not have an answer right now. I am traveling on family matters and do not have my computer with me. I am going to invite @slspencer and @Grace to this message in the hope that one of them can help you more quickly.

**Grace**#4

I’m thinking that you would like line B1 to B10 to be at 90 degrees of the angle of the curve B1 to B3. In this case, I’d enter the angle formula of B10 to be the angle of curve of the 1st handle of the curve B1 to B3 plus 90 degrees.

By ‘Flow off the curve’ I take it that you want the curve to move off line B1 to B10 and then to curve away. I’d enter the formula on the 1st handle be the same angle as the line B1 to B10 with a length of perhaps 1cm. This will extend the line and ease immediately into the curve to the right.

I have to go to work now, but if you don’t understand, I’ll do images this evening for you.

**slspencer**#6

Hi @AmandaClarice - did you get your answer?

I tend to create curves by defining the angles with a formula so that I can use (angle formula +180) to do exactly what you’re asking about. It’s extending a line using the tangent at the endpoint of a curve. Does this help? If not, please post your pattern and your measurement file and I’ll see what I can do to convert your curve so you can extend the curve along its tangent.

If you could please do the pictures/video.I’m more visual. I am at a loss with reading the instruction. I apologize for the delay, we had long weekend and I am just catching up now the kids are back in school.

**Grace**#8

If you let us have the .val and .vit files, then we can create a short video or images to show you how to do this. I don’t have anything that will serve the purpose at the moment.

**slspencer**#9

Simple Example of the concept:
Create a Bezier curve using the **Curve tool which uses control handle** tool, and then create a line along the tangent at the end of the curve using the **Point at distance and angle** tool.

**slspencer**#10

Complex Example:
Find the angle of the tangent at the end of a multisegment curve created with the **Curved Path** tool *(the control handles are not created with separate control points).*

- Confirm you know which angle to use: Select your curve. Go to
**Measurements**and select**Variables Table**. Select the**Angle Curves**tab. Then locate your curve and the segment within your curve. - Then create or update your line extension and for the angle use the formula option . Select the
**Angles of curves**radio button then choose your curve segment’s angle.

**AmandaClarice**#11

pattern.val (33.3 KB)

I want to do 90 degrees off the C2 and C3 curve. I wrote out all the steps for the top, bottom and cradle however the word doc won’t upload.

I looked briefly at these videos, I will try to understand and apply them to this task. One video looks like you draft the bra pattern more efficiently then I do. I also like how you angled the wire slightly at the top.

**kmf**#12

If you want to upload the document, please convert it to plain text (.txt) or to pdf and try again.

**AmandaClarice**#13

Bottom Cup.pdf (239.3 KB) cradle.pdf (279.0 KB) TOP CUP.pdf (125.1 KB)

There will be some errors or discrepancies as some things have changed. Discrepancies: The cradle line, bottom cup line, CF and BR line changed when having to group the lines clockwise to be able to print. Noticed that there was great difficulty at this stage. There was no notification when the group was successful and line didn’t always highlight in red. It also froze a couple times.

**AmandaClarice**#14

When grading i decided to try going out point A15. How do you keep the lines from going distorted and matching the cup lines to the cradle lines. Or will this not be possible?

**kmf**#15

I am hoping for @grace to answer this one because she is so much more practicid with curve shaping than am I. There is a time difference for her, since she lives in Africa. I will look again tomorrow and spend some time on your concern if she has not been able to

**AmandaClarice**#16

This is way above my head. I have watched it numerous times trying to figure out how to apply this to the top cup center front and top cup breast root and then angle them both 90 degrees.

**Grace**#19

Ok, I’ve had a quick look and the first thing that I see is that you have ‘hard-coded’ the measurements. It would be a lot quicker and easier in the long run, if you created a .vit (measurement) file using SeamlyMe. Then you could create one for the tutorial pattern so that you could follow the tutorials and then copy that .vit file by **Save As** and add your name or something. Edit the values to your own measurements.Then you can just change the measurements file to resize your pattern and all the points should move according to the measurements.

You may need to tweak the curves a bit, but the basic layout shouldn’t cause what has happened in your image above unless you have made a small error in the measurements.

As it is, you’ll need to edit or redo the pattern using references to your measurement file instead of exact measurements.

If you check out this topic, I did this tutorial that @AVI posted & added my files for comment: Kristina Shin Basic underwire bra tutorial