If the circle is the origin in 2 axis its going to be 0,0 If you wanted a different nominal but still using the circle as the origin you could offset the origin. The option to do that is in your alignment dialog box. HTH
When I am doing a alignment, and I do PLANE/LINE/CIRCLE. Is there a way to put in the circle location?(instead of having it at 0 0)
thanks, Jerred
Ex
PLN1 in Zplus
LIN1 in +X-Axis direction
CIR1 at (15,25)
Here is your alignment
Level
Zplus level to PLN1
Xplus rotated to LIN1 about Zplus
Zplus translate to PLN1
Xplus translate to CIR1
Xplus offset by -15
Yplus translate to CIR1
Yplus offset by -25 to CIR1
If you can get a hold of a small box. Draw all of your work planes on the box. (Z+,Z-,Y+,Y-,X+,X-). Obviously in their natural respect to each other.
Now grab another box. Draw a circle on each side of the box. Now denote each axis, both the + and - side, that is in effect to the circle. (A circle drawn on the Z+ side will interact with the x axis and y axis.)
If you can accomplish this ^, then alignments are something you are capable of.
Now.
The easiest first step is to draw your plane. Or, a leveling item. Sometimes it can be a cylinder.
In your alignment screen. Highlight the feature you wish to level to and level it to the appropriate work plane. (In case you are unaware, a Z+ item will have a vector of (0,0,1))
To verify you have done this correctly, if you select vector point and (If you have access to CAD, select the surface you leveled to. The point should come up with a vector in relation to your leveled item that is (1,0,0) or some variation there of.) if you don't have CAD, input the vector to match your level item. To measure a surface facing Z+, you will need a vector of (0,0,1). If the item is facing Y+ your vector will be (0,1,0).
If all of that works out ^, now you can begin by selecting an origin.
Now if you have measured a feature that you wish to be your origin of (0,0,0), then by all means origin to it. If you wish to only origin to a certain axis then do it that way. In your alignment screen select the feature and origin to the correct axis. If there are multiple, then by all means check each that apply. If you wish to move your origin after assigning it. Let's say your wall is close to a circle you want to measure, but it's easier to measure the wall. if you select alignment again and notice the offset distance box. if you select the axis you wish to move, then enter in the amount you wish, you may offset your coordinate system.
If you can understand and use all that, I will go about explaining rotating about and/or to an axis.
