Ortho with 45 degrees

[aban]

Hello, is there any way to get ortho to also include 45 degrees? I know polar tracking has the different angles, but I would need ortho to do that. If not, is there a way to make a lisp file to assign "DD" to turn that lisp file on? Please help with this because I really need this to work.

 

Thank you!

[ReMark]

Why not just use the SNAPANG command to reset your crosshairs?

[CyberAngel]

I don't see why you'd need Ortho to use polar tracking. Set your increment to 45 degrees and you should be okay.

[aban]

Why not just use the SNAPANG command to reset your crosshairs?

 

 

Because I need a quick toggle for what I'm doing. SNAPANG would still only give me the 2 directions. I need 3 directions, 0,90, and 45 degrees.

[aban]

I don't see why you'd need Ortho to use polar tracking. Set your increment to 45 degrees and you should be okay.

 

 

I need the ortho function to have the 45 degrees. Polar tracking allows other angles, but I need a quick toggle to have the 45 in ortho.

[eldon]

Orthogonality is to do with right angles. 45° is half a right angle and can not be accommodated in Ortho as it stands.

 

If you were to set up a 45° Ortho, then you would only have available 45° and 135°.

 

You just need a steady hand to use Polar tracking with 45°.

[aban]

Orthogonality is to do with right angles. 45° is half a right angle and can not be accommodated in Ortho as it stands.

 

If you were to set up a 45° Ortho, then you would only have available 45° and 135°.

 

You just need a steady hand to use Polar tracking with 45°.

 

Sounds good, so that means that there is no typical autocad command to get that 45 degrees. Is there a way to make a lisp file to have ortho, but include the 45 degrees? Or some other way to customize it?

[tombu]

Sounds good, so that means that there is no typical autocad command to get that 45 degrees. Is there a way to make a lisp file to have ortho, but include the 45 degrees? Or some other way to customize it?

 

Here's a simple toggle to change the snap angle between horizontal and 45°:

(defun c:toggle45 ()
(if(= (+ (getvar "snapang")(getvar "viewtwist")) (* 2 PI))
 (setvar "snapang" (-(/ PI 4) (getvar "viewtwist")))
 (setvar "snapang" (- (getvar "viewtwist")))
)
(princ)
)

[Dana W]

When using Auto snap tracking with polar tracking, the cursor will give you a lock on each angle you put in the polar tracking list. I think 45 is actually one of the default angles. The lock is not nearly as strong as the Ortho lock and releases quickly, so it will take a small amount of testing to get the feel for when it snaps to the listed angles. A small cross should appear under the cursor when you are on a I also suggest turning on dynamic input for this so you can read the angle and distance right at the cursor. The methodology is already there, no need to jump through so many flaming hoops.

[aban]

On 8/17/2018 at 8:47 AM, tombu said:

 

Here's a simple toggle to change the snap angle between horizontal and 45°:

(defun c:toggle45 ()
(if(= (+ (getvar "snapang")(getvar "viewtwist")) (* 2 PI))
 (setvar "snapang" (-(/ PI 4) (getvar "viewtwist")))
 (setvar "snapang" (- (getvar "viewtwist")))
)
(princ)
)

 

 

I think this might be what I need. What would the trigger be to turn this on? Like for example, can I make this into "DD" command and press it again to turn it off? How could I set that as the command to turn it on? This would be a lisp file right?

[aban]

On 8/17/2018 at 2:19 PM, Dana W said:

When using Auto snap tracking with polar tracking, the cursor will give you a lock on each angle you put in the polar tracking list. I think 45 is actually one of the default angles. The lock is not nearly as strong as the Ortho lock and releases quickly, so it will take a small amount of testing to get the feel for when it snaps to the listed angles. A small cross should appear under the cursor when you are on a I also suggest turning on dynamic input for this so you can read the angle and distance right at the cursor. The methodology is already there, no need to jump through so many flaming hoops.

I just want the three angles to work, 0, 45, and 90. I don't want any other angle to work at the time of the function. Like for example, if I do polar tracking I know that I could set 45 as an angle and it will snap to that, but it will also give me every single angle between 0 and 45 and between 45 and 90. I only want the three angles to work, 0, 45, and 90 exclusively. Even if there's a quick toggle between 0, 90 and 45 and 135 that's fine as well. I would prefer to have the one command to have all three angles, but if the only way to do that is to toggle the 0 and 45 I'm ok with that as well. 

[Dana W]

Then what you are looking for isn't there, apparently.

Edited August 21, 2018 by Dana W

[aban]

2 minutes ago, Dana W said:

What you are looking for isn't there.

I don't see how what I'm saying is not possible. Functions that have been created have been much much more complex. 

[Dana W]

6 minutes ago, aban said:

I don't see how what I'm saying is not possible. Functions that have been created have been much much more complex. 

I didn't say anything about created functions, but many have given some pretty good suggestions for those.  What I referred to was that AutoCad does not have Ortho with 45 deg.

Getting your desired result from using polar and auto snap tracking is much quicker than writing lisp code or carrying on a three day forum conversation.   I am out.

Edited August 21, 2018 by Dana W

[aban]

1 minute ago, Dana W said:

I didn't say anything about created functions, but many have given some pretty good suggestions for those.  What I referred to was that AutoCad does not have Ortho with 45 deg.

Getting your desired result from using polar and auto snap tracking is much quicker than writing lisp code or carrying on a three day forum conversation.   I am out.

I know autocad doesn't have ortho with 45 degrees. I've accepted that the first response. I'm asking about creating a function. 

 

Getting my desired result would come much quicker from something custom, hence me coming and asking for help on this forum. If you don't want to help I'm alright with that, but I'm on the forums for help. If someone else had a question that I would be able to help with I would help them. If I didn't know the answer I wouldn't tell them that they should go somewhere else. I wouldn't tell them that what they want is not useful. I'm not carrying out a 3 day forum conversation for the fun of it. I've stated what result I want and asked if anyone can help me, that's all. I'm still looking for the answer. 

 

And if this is not the right place, where can I go for this?

[Cad64]

5 hours ago, aban said:

I just want the three angles to work, 0, 45, and 90. I don't want any other angle to work at the time of the function. Like for example, if I do polar tracking I know that I could set 45 as an angle and it will snap to that, but it will also give me every single angle between 0 and 45 and between 45 and 90. I only want the three angles to work, 0, 45, and 90 exclusively.

If you set your Polar Tracking increment angle to 45, all you will get is 45 increment angles. You won't get every other angle in between.

[aban]

1 hour ago, Cad64 said:

If you set your Polar Tracking increment angle to 45, all you will get is 45 increment angles. You won't get every other angle in between.

That tracks 45 degree angles only, but the other angles it works as well. I want it to only work 0, 45, and 90 degrees only. 

[Cad64]

I guess I don't understand what you're trying to do? Polar Tracking will allow you to snap to 45 degree angles, but if you only want 0, 45 and 90, you will need to find someone who can write some code for this. There is no way in Autocad to restrict the angle snap to those angles only.

You should post your request in the Autolisp section: https://www.cadtutor.net/forum/forum/15-autolisp-visual-lisp-amp-dcl/

[tzframpton]

8 hours ago, Cad64 said:

I guess I don't understand what you're trying to do?

He's just wanting to lock down a 45° incremental angle only with his mouse. Not possible without some type of customization as far as I know. 

I'm getting confused with "only 45 and 90 degree angles" because 45° factors into 90°, so the request for 90° is irrelevant I'm assuming? The angles he's wanting locked down, as I see it, are as follows:

• 0°
• 45°
• 90°
• 135°
• 180°
• 225°
• 270°
• 315°

Polar Tracking can achieve the above, but it sounds like the user wants a true "lock down" of the cursor movement path. If this is all accurate then I do believe a customization would be in place. 

-TZ

[Cad64]

I understand about the 45 degree increments but what I don't understand is why he only wants 0, 45 and 90? He has said that several times so I'm assuming he doesn't want 135, 180, 225, 270 and 315. I don't understand why those other angles are a problem? And I'm not even sure if a custom command will be able to do what he wants because those other angles are automatically generated when you initiate a 45 degree angle snap.

Polar Tracking works great for me, but as you said, if he wants a true lock down of the cursor, he will have to get someone to help customize that.