Need Macro..apparent center of polyline

[David D]

I am wondering if there is a snap setting I am unable to find that would show the "apparent center" (basicaly, the center of the mass if it was solid) of a square, rectangle, or any other odd shaped polyline. I see it in circles but not other shapes.

[BlackBox]

Try Mid Between Two Points (_m2p) for your osnap.

For example:

To snap to the center of a rectangle, start the line command and Shift + Right Click, pick 'Mid Between 2 Points', then select the lower left, and upper right corners of the rectangle.

[ReMark]

From draftsperson.net:

With the creation of a REGION or a 3D SOLID, it is possible to find the centroid of an object, with the MASSPROP function. MASSPROP is an AutoCAD function.

[BlackBox]

From draftsperson.net:

With the creation of a REGION or a 3D SOLID, it is possible to find the centroid of an object, with the MASSPROP function. MASSPROP is an AutoCAD function.

@ Mark -

That won't work for a Polyline entity... the OP used Solid as an example, as you can snap to the centroid of the Region/Solid, but the OP wants to avoid that step altogether (as I understand it). More information is needed.

@ Davd -

I am wondering if there is a snap setting I am unable to find that would show the "apparent center" ... of a square, rectangle, or any other odd shaped polyline. I see it in circles but not other shapes.

How are you intending to 'show' the centroid?

Do you mean using a line command, etc. you want to snap to the centroid of a given polyline, or do you want to pick a polyline, and mark the centroid by placing a point object, etc.?

[David D]

Renderman, I do not see the mp2 option. What I want it for is to position text that is middle center justified for aesthetic purposes. Shapes I am using are tool outlines, all sorts, sizes and shapes. I am working in 2d.
Thank you

[ReMark]

The m2p or mtp option is a command modifier. You have to use AFTER starting the command you are working with like Move, or Line or Circle, etc.

[BlackBox]

Renderman, I do not see the mp2 option. What I want it for is to position text that is middle center justified for aesthetic purposes. Shapes I am using are tool outlines, all sorts, sizes and shapes. I am working in 2d.
Thank you

The m2p or mtp option is a command modifier. You have to use AFTER starting the command you are working with like Move, or Line or Circle, etc.

Correct. You must manually (or programmatically) enter "_m2p" once you've bagan a command.

Using your example, of moving text:

Select the text, select the insertion grip (you listed Middle Center), then begin to move your mouse (you should see the text moving along), now at the keyboard type in "_m2p" (without the quotes) and hit Enter. You should now be prompted to select two points sequencially.

Give it a try.

[David D]

Tried it. After typing _m2p and hit Enter I get this "Point or option keyword required."

[BlackBox]

Tried it. After typing _m2p and hit Enter I get this "Point or option keyword required."

Works on my end (and has for years):

Command:
 
** STRETCH **
Specify stretch point or [Base point/Copy/Undo/eXit]:
>>Enter new value for ORTHOMODE <1>:
Resuming GRIP_STRETCH command.
 
Specify stretch point or [Base point/Copy/Undo/eXit]: _M2P
First point of mid: Second point of mid:
Command: *Cancel*

[David D]

I worked with the sequence and got to work. Since I am doing this for many, many, many drawings I need to make a button with a macro (i think, new to this so may not have correct terminoligy) should I pursue this in this thread or start a new one.