topic Re: Rotate around specific point GDL in Libraries & objects

Rotate around specific point GDL

Anonymous — Wed, 14 Oct 2015 08:14:19 GMT

HI,

Is there any way to rotate model around specific point?

When I use this code, when i use tilt. The head don't rotate from the point I thought it would.

Please help me.

"
rotz Rot_z+180
rotx 180
roty tiltBeam

add -0.1035016104579/2,-0.1035016104579/2,0.1

call "Bolt_3D_HEAD_03",
PARAMETERS A = 0.1035016104579, B = 0.1035016104579, ZZYZX = 0.1201913133264"

Re: Rotate around specific point GDL

Barry Kelly — Wed, 14 Oct 2015 09:01:56 GMT

What you are doing is rotating your object and then moving it (ADD) away from you point of rotation.
This means it will end up in a different position based on your rotation.

If you want it to remain in one place then move it there first and then do the rotation.

Barry.

Re: Rotate around specific point GDL

Anonymous — Wed, 14 Oct 2015 09:55:25 GMT

Barry wrote:
What you are doing is rotating your object and then moving it (ADD) away from you point of rotation.
This means it will end up in a different position based on your rotation.

If you want it to remain in one place then move it there first and then do the rotation.

Barry.

I don't realy understand. But I have change some of the code.
But the rotate specific point is wrong.

Re: Rotate around specific point GDL

sinceV6 — Wed, 14 Oct 2015 19:34:43 GMT

Hi.

I think the problem is in the called object. It looks like the origin point in the object (the blue dot in last picture I think) is not the point you want it to rotate about (the red dot). You have a few options:

1. Edit the called object so that the point of insertion is the point to be rotated about (in the called object use ADD to move the coordinate system so the object will move rotate this point... in other words, center your called object)

2. Know the offset that you have in your called object and move the origin point and rotate the coordinate system before each time you call it.

3. Do the above in a loop for the number of times you will call the object.

Hope that gives you a few ideas.

Best regards.