VL block insertion point.

R2005:

I create a user ucs and add a block definition:

(setq InsBlk1 (vla-Add (vla-Get-Blocks *acaddoc*)(vlax-3D-Point '(0.0 0.0 0.0)) "Rec_1"))

#<VLA-OBJECT IAcadBlock2 0da73054>

I make a point list array from the same points as my UCS and add a polyline to the block and all is well.

Now, I change to another UCS and insert the block:

(setq Blk1 (vla-InsertBlock *mspace* (vlax-3D-Point '(0.0 0.0 0.0)) "Rec_1" 1 1 1 0))

#<VLA-OBJECT IAcadBlockReference 0d629894>

The block appears, but is at 0,0,0 of the WCS!
I've tried using different points to add and insert the block but it doesn't seem to chage anything.

Can someone tell me what to do here?

TIA

Bill

 

Bill,
The insertion point of a block is ALWAYS expressed in terms of WCS. So to
insert it at 0,0,0 of the UCS you will need to do the transformation matrix
of the UCS point to WCS coordinates.

--
Jeff
check out www.cadvault.com

polyline to the block and all is well.

doesn't seem to chage anything.

 

Don't mention transformation matrixes.

They have been the source of my pain...

All I need really is translate from 0.


Bill

 

I guess I was wrong.

Do you have to vla-insertbock at 0,0,0 and the transform?

I thought it would be like the command where you could just place it at a give point?

Bill

 

Translate the point list from UCS to WCS before converting it to a variant
to pass to the method. (trans) works fine, without messing with a transform
matrix.

--
R. Robert Bell


I guess I was wrong.

Do you have to vla-insertbock at 0,0,0 and the transform?

I thought it would be like the command where you could just place it at a
give point?

Bill

 

Well, my points (I think) are already in the WCS. The are points from a 3dpolymesh.
What i was doing was setting a UCS to the points of one section and making my block containing the polyline.
From what you say, sounds like I should stay in the WCS when I make my block and add the pline?

Bill

 

I'm not talking about the _points_ of the objects within the block. I'm
talking about the insertion _point_ of the block reference.

--
R. Robert Bell


Well, my points (I think) are already in the WCS. The are points from a
3dpolymesh.
What i was doing was setting a UCS to the points of one section and making
my block containing the polyline.
From what you say, sounds like I should stay in the WCS when I make my block
and add the pline?

Bill

 

Ahhh..

Thanks


Bill