Rotate group of objects about center point?

On 21/01/2014 3:04 p.m., Glenn Jones wrote:

Hi would like to rotate a group of objects 180 degrees about their

combined center. It is too difficult to accurately do this using the

mouse, how can get this done?

 

Glenn

Hi Glenn

To rotate elements about a point on the board, I would do it thus:

Enter into the command line

Display NONE 21 23;

The group pivots around the MARK by 180 degrees

HTH Warren

On 1/21/2014 1:01 AM, warrenbrayshaw wrote:

On 21/01/2014 3:04 p.m., Glenn Jones wrote:

Hi would like to rotate a group of objects 180 degrees about their

combined center. It is too difficult to accurately do this using the

mouse, how can get this done?

 

Glenn

 

Hi Glenn

 

To rotate elements about a point on the board, I would do it thus:

 

Enter into the command line

Display NONE 21 23;

<enter>

Select MARK and click at the spot you call the center

Enter into the command line

rotate R180 (c>R0 0)

<enter>

 

The group pivots around the MARK by 180 degrees

 

HTH Warren

Hi Warren, thanks for the response. I am having trouble manually finding

the exact center of the group. Is there anyway to tell Eagle to locate

the cursor to that point?

Thanks

Glenn

On 1/21/2014 1:01 AM, warrenbrayshaw wrote:

On 21/01/2014 3:04 p.m., Glenn Jones wrote:

Hi would like to rotate a group of objects 180 degrees about their

combined center. It is too difficult to accurately do this using the

mouse, how can get this done?

 

Glenn

 

Hi Glenn

 

To rotate elements about a point on the board, I would do it thus:

 

Enter into the command line

Display NONE 21 23;

<enter>

Select MARK and click at the spot you call the center

Enter into the command line

rotate R180 (c>R0 0)

<enter>

 

The group pivots around the MARK by 180 degrees

 

HTH Warren

Hi Warren, thanks for the response. I am having trouble manually finding

the exact center of the group. Is there anyway to tell Eagle to locate

the cursor to that point?

Thanks

Glenn

On 21/01/2014 7:25 p.m., Glenn Jones wrote:

 

Hi Warren, thanks for the response. I am having trouble manually finding

the exact center of the group. Is there anyway to tell Eagle to locate

the cursor to that point?

 

Which center are you after? Is it the centroid of the group's pads, the

part outlines or all part objects including names and values?

Eagle cannot do it out of the box but a ULP could be written to do it.

Can you not rotate the group as I suggested earlier and then just move

the group as a whole to correct for any misplacement?

Warren

On 1/21/2014 1:59 AM, warrenbrayshaw wrote:

On 21/01/2014 7:25 p.m., Glenn Jones wrote:

 

 

Hi Warren, thanks for the response. I am having trouble manually finding

the exact center of the group. Is there anyway to tell Eagle to locate

the cursor to that point?

 

 

Which center are you after? Is it the centroid of the group's pads, the

part outlines or all part objects including names and values?

 

Eagle cannot do it out of the box but a ULP could be written to do it.

 

Can you not rotate the group as I suggested earlier and then just move

the group as a whole to correct for any misplacement?

 

Warren

Hi Warren, "Is it the centroid of the group's pads" is what i want.

I expected to be able to rotate the entire group in place so that I

don't have to try and relocate it afterward.

Sounds like a feature request now

Glenn

On 22/01/2014 4:14 a.m., Glenn Jones wrote:

 

Hi Warren, "Is it the centroid of the group's pads" is what i want.

 

I expected to be able to rotate the entire group in place so that I

don't have to try and relocate it afterward.

 

Sounds like a feature request now

 

Glenn

Try the attached ULP

It rotates the group around the pad/smd centroid.

I suspect this is not what you want. I feel you are likely after

'transpose horizontally'

Warren

On 1/22/2014 2:33 AM, warrenbrayshaw wrote:

On 22/01/2014 4:14 a.m., Glenn Jones wrote:

 

 

Hi Warren, "Is it the centroid of the group's pads" is what i want.

 

I expected to be able to rotate the entire group in place so that I

don't have to try and relocate it afterward.

 

Sounds like a feature request now

 

Glenn

 

Try the attached ULP

It rotates the group around the pad/smd centroid.

 

I suspect this is not what you want. I feel you are likely after

'transpose horizontally'

 

Warren

 

 

 

Hi Warren,

First let me say thank you! for writing that ulp.

It works great in the board editor. I neglected to mention that I was

actually trying to rotate the pads in the package library editor.

For an enhancement it would be handy for the ulp to take a rotation

amount as my requirement this time was for 180 (transpose) when it could

be any amount.

Glenn

Thanks a lot for the ULP Warren. I needed something to rotate a board by 45° in the board editor. Modified it and it works a treat