topic Re: Lock 3D vectorial hatching in Visualization

Lock 3D vectorial hatching

Anonymous — Fri, 26 May 2023 13:00:49 GMT

Hello,
Is there any way to lock the position of a 3D vectorial hatch pattern
relative to the edges of the element that has the hatch pattern asigned
to it's surface ? I have a simple wall with a brick running bond vectorial
hatch pattern on it's surface and that pattern has been aligned with
the vertical edges so that the wall is exactly so many bricks wide.
If I move the wall the hatch pattern no longer aligns with the vertical
edges of the wall. I need some way to lock the pattern so it stays
aligned to the edges of the element.
Thank you,
Peter Devlin

Re: Lock 3D vectorial hatching

Anonymous — Sun, 24 May 2009 18:41:05 GMT

With some experimenting, I found that it is possible to
lock the position of a 3D vectorial hatch pattern for
simple walls by using the align 3D texture command ->
"set origin". This locks the hatch pattern relative to
the edges of the element. This works for simple walls
but the align 3D texture command has no effect on polywalls.
Peter Devlin

Re: Lock 3D vectorial hatching

Link — Sun, 24 May 2009 20:10:33 GMT

As far as I recall, the direction the walls are drawn dictate how the hatch is displayed.

Cheers,
Link.

Re: Lock 3D vectorial hatching

Anonymous — Sun, 24 May 2009 20:38:53 GMT

Hello Link,
I just checked and the direction that a wall is drawn does not
effect how the fill is displayed on the surface of the wall.
The position of the fill relative to the edges of the wall
is determined by the position of the wall relative to the
project origin. If you draw a wall horizontally at any location
in the plan, starting at the right or the left, of an arbitrary length,
when viewed in 3D, the fill does not start at the wall origin.
If you drag the wall by it's center point over to the origin
you will see that it's fill pattern is now centered on the center
of the wall and is symmetric side to side.
Thanks,
Peter Devlin

Re: Lock 3D vectorial hatching

Link — Sun, 24 May 2009 21:04:15 GMT

Peter wrote:
Hello Link,
I just checked and the direction that a wall is drawn does not
effect how the fill is displayed on the surface of the wall.

You seem pretty sure about that!

Peter wrote:

The position of the fill relative to the edges of the wall
is determined by the position of the wall relative to the
project origin. If you draw a wall horizontally at any location
in the plan, starting at the right or the left, of an arbitrary length,
when viewed in 3D, the fill does not start at the wall origin.
If you drag the wall by it's center point over to the origin
you will see that it's fill pattern is now centered on the center
of the wall and is symmetric side to side.
Thanks,
Peter Devlin

Maybe it's a combination of both, I haven't tested it that heavily, but if you try experimenting with a diagonal hatch I'm sure you'll see interesting results.

Cheers,
Link.

Re: Lock 3D vectorial hatching

Anonymous — Sun, 24 May 2009 21:31:35 GMT

Hello Link,
I'll make a deal with you.
I will experiment with a diagonal hatch as you suggested
if you do the experiment that I suggested in my last post.
Is it a deal ?
Peter Devlin

Re: Lock 3D vectorial hatching

Link — Mon, 25 May 2009 00:06:18 GMT

Well I analyzed it in an elevation window and can't say I can confirm your findings.
Even the same (drafting) fill using the same fill as the hatch doesn't line up with the wall's hatch that is centered on the project origin.
And the hatch isn't centered exactly (as per the dims).

Close, but no cigar. How'd you go?

Cheers,
Link.

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 00:39:50 GMT

Hello Link,
I am surprised you could not reproduce what I had found.
I do notice in your image that the project origin is not
centered on the center of the wall but slightly off.
I am going to try it again in AC 12 and see if I get the same
effects that you get in the Section/Elevation window.

I did try a diagonal fill material in AC 12 (chain link fence)
and did not notice anything unexpected.
Thanks,
Peter Devlin

Re: Lock 3D vectorial hatching

Link — Mon, 25 May 2009 01:00:00 GMT

Actually the wall is centered on the project origin - it's the hatch that's not centered, which was my point.

Maybe try assigned a diagonal block or brick fill as a hatch to a material and the model two walls in different directions. It definitely sets the direction of the fill. I remember GS telling me via a bug report many moons ago. Never asked about the origin of the hatch AFAIR. I would have assumed it would be based of project origin, but it seems not?

Cheers,
Link.

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 01:42:43 GMT

Hello Link,
Setting the wall tool to have a brick running bond vectorial hatch,
I drew two walls one under the other and dragged the upper wall
by it's center to align with the Y axis of the project origin
and dragged the lower wall by it's center to slightly to one
side of the Y axis of the project origin. The 3D vectorial hatch pattern
of both walls is centered on the origin but the the pattern on the
upper wall is centered on the wall (symmetrical) while the lower
wall's pattern is not centered at the center of the wall but is offset
meaning not symmetrical because the lower wall is not centered
on the Y axis of the project origin. I seem to be able to get the
hatch pattern to center yet you don't. Please see attached.
I'm sorry Link, I don't understand why we are getting differing results.
Peter Devlin

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 02:19:28 GMT

Hello Link,
On further investigation, I find that you are right. I got some inaccuracy
when centering the wall on the project origin and found that fill pattern
was not exactly centered on the wall. Close but not exactly. I am going
to try in AC 10 and see if it is any different.
Thanks,
Peter Devlin

Re: Lock 3D vectorial hatching

Eduardo Rolon — Mon, 25 May 2009 03:02:38 GMT

After doing a project with custom fills applied to walls I found out that;

1) All fills start aligned from the origin it is not affected by the location of the wall.
2) If you want to realign/override the fill then you use the 'Set Origin'
3) If you did an override it is easier to reset the texture Origin and then do another override than to try to fix the first one.
---
Have you considered that the fill is wrong?
---
AC10, AC11 and AC12 all behaved differently, the above is for 12. If I remember correctly, AC10 and 11 assigned the vectorial fill from the object's origin which was determined from the point that it was started from.

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 03:34:38 GMT

Hello Eduardo,
We all seem to be getting different results.
in AC 12 when I tried moving the wall with it's center point to align
with the project origin the fill is not exactly centered on the wall as
I mentioned in my last post. I tried the exact same thing in AC 10
and it worked perfectly. The fill pattern is exactly centered on both
the X and Y axis of the project origin and when the wall is moved
to center on the origin the fill pattern is centered exactly within the wall
meaning the fill pattern is symmetric side to side.
You wrote:
"1) All fills start aligned from the origin it is not affected by the location of the wall."
This is exactly what I found in AC 10 but in AC 12 there is a slight
mis-alignment relative to the origin.
Yet Link says:
"Even the same (drafting) fill using the same fill as the hatch doesn't line up with the wall's hatch that is centered on the project origin.
And the hatch isn't centered exactly (as per the dims). "

In short, I found that in Ac 10 what you say is true but in AC 12
what Link says is true. Frankly, I like how it works in AC 10.
see attachment
Peter Devlin

Re: Lock 3D vectorial hatching

Eduardo Rolon — Mon, 25 May 2009 04:05:53 GMT

Hello Peter,

I tried it in 12 with a custom fill and it works like AC10. No shift.

Should stop checking email before turning comp off.

Re: Lock 3D vectorial hatching

Eduardo Rolon — Mon, 25 May 2009 04:12:30 GMT

and adding a fill.

Re: Lock 3D vectorial hatching

Link — Mon, 25 May 2009 04:22:14 GMT

I'm almost too scared to bring this up again, but what direction did you draw the wall relative to the elevation? Left to right or right to left? Because if the direction changes the hatch, then you're comparing apples to feijoas.

Cheers,
Link.

Re: Lock 3D vectorial hatching

Eduardo Rolon — Mon, 25 May 2009 12:47:16 GMT

One was right to left and the other left to right. No shifts.

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 16:02:02 GMT

I can verify what Eduardo found. Draw two walls one left to right
the other right to left and there is no shift and if the walls are
drawn one above the other there fill patterns align exactly.
Drag both walls by there center points to align with the project
origin and the fill patterns of both walls still align. This is true
for both AC 12 and AC 10. I also checked if the fill patterns
were symmetric about the the project origin and they are
for both versions. So it seems true that 3D vectorial hatches
are drawn with the fill origin corresponding with the project origin.
This is exactly like a 2D fill pattern drawn "linked to project origin".
When the fill is dragged the pattern shifts within the outside contour.
Peter Devlin

Re: Lock 3D vectorial hatching

Link — Mon, 25 May 2009 20:59:31 GMT

And does it also stand true for some kind of river rock hatch? Because the fills in Eduardo's example look awfully symmetrical!

Cheers,
Link.

Re: Lock 3D vectorial hatching

Anonymous — Mon, 25 May 2009 21:47:45 GMT

Hello Link,
I did what you suggested. Using a river rock material
and you can see the result. Please see attachment.
Peter Devlin