11 messages in com.googlegroups.sketchupissuesRE: Hidden lines
FromSent OnAttachments
Staple23 Apr 2008 00:54 
Staple23 Apr 2008 01:03 
SketchUp Guide Tommy23 Apr 2008 09:50 
Short, Susanne J.23 Apr 2008 09:53.pdf
jgb24 Apr 2008 10:12 
Short, Susanne J.24 Apr 2008 10:59 
Gully Foyle24 Apr 2008 12:26 
Wo3Dan24 Apr 2008 12:46 
Wo3Dan24 Apr 2008 12:50 
Short, Susanne J.25 Apr 2008 04:31 
Short, Susanne J.25 Apr 2008 06:55 
Subject:RE: Hidden lines
From:Short, Susanne J. (Susa@bonestroo.com)
Date:04/25/2008 06:55:55 AM
List:com.googlegroups.sketchupissues

Thanks for your help!

-----Original Message----- From: sket@googlegroups.com [mailto:sket@googlegroups.com]
On Behalf Of Wo3Dan Sent: Thursday, April 24, 2008 2:51 PM To: Google SketchUp Help - SketchUp Issues Subject: Re: Hidden lines

Just noticed the short story to the point by Gully. ;-))

Cheers, Wo3Dan

On 24 apr, 21:47, Wo3Dan <g.h.@planet.nl> wrote:

Susanne,

Long story by jgb. But you can only get rid of those (white) lines by deleting the faces underneath (and perpendicular to) the pavement. As long as 3 or more faces have a mutual line, this line will become visible when orbiting and looking at your model at certain angles. EVEN when the line is smoothed or hidden. Why? Well, your pavement has the thicknes of just a face. This effect of 'seeing through a face' will even appear when the 'thickness' of the pavement is only an inch and you zoom out enough. An intersecting face will shine through the double faces.

So with a single face just delete the intersecting faces underneath and smooth the lines of the pavement. No more than that.

Wo3Dan

On 24 apr, 19:59, "Short, Susanne J." <Susa@bonestroo.com> wrote:

Thank you! I'll give this a try Good ideas!

Susanne Short Tel 651-967-4549 susa@bonestroo.com

Bonestroo

-----Original Message----- From: sket@googlegroups.com [mailto:sket@googlegroups.com]
On Behalf Of jgb Sent: Thursday, April 24, 2008 12:13 PM To: Google SketchUp Help - SketchUp Issues Subject: Re: Hidden lines

I get them a lot as well.  I too cannot get rid of them, but judging from your drawing of a curving road that follows an uneven plane, which is similar to one of mine, you can minimise many of the really bad ones.

Best thing is to temporarily group the bad section, then edit group. Turn [view][hidden geometry] on.  Then start looking for double hidden lines, by getting in close.  Delete them ONE BY ONE, using UNDO if chunks disappear.  Once you got rid of the main offenders, then look for faces that are slightly misaligned with thier neighbors.  What you need to do is effectively redraw those intersections.  Delete the common hidden line between the 2 faces.  They should both disappear. If not, delete the line again.

Now comes the complex part.  Redraw that deleted line between endpoints.  If both faces reappear, then hide the line, and it should remain invisible, but not always.  If only 1 face reconstructs, delete 1 other line on that missing face.  What occured was a duplicate parallel line, and this will fix it.  You still have 2 endpoints to recreate the missing 2nd line.  Redraw the missing line.  If the face still does not form, keep doing this all round till it does.  99% of the time you are dealing in triangles, so this is not a major job, 3 lines to fix and hide.  After the resurfacing, close the group, then explode it back to its normal.  Turn hidden geometry off.

Another thing I noticed on uneven surfaces, is these ghost lines tend to appear on dark surfaces at low viewing angles.  Try setting the opposite side of the surface to the same color/texture/material as the visible surface. Then select the hidden line between the faces, and set its color to the same. It helps, but again, not at oblique viewing angles.

jgb

That On Apr 23, 12:54 pm, "Short, Susanne J." <Susa@bonestroo.com> wrote:

Can you help me????

How do you I get hidden lines not to appear as white lines in my model? If I erase them the model gets messed up.

See attached image

Shortie

-----Original Message----- From: sket@googlegroups.com

[mailto:sket@googlegroups.com] On Behalf Of SketchUp Guide Tommy Sent: Wednesday, April 23, 2008 11:51 AM To: Google SketchUp Help - SketchUp Issues Subject: Re: Model cutting up in strange places

Hi Staple,

This is a classic case of "clipping." Feel free to check out the following Google SketchUp Help Center article for additional information about this issue:

http://sketchup.google.com/support/bin/answer.py?hl=en&answer=36261

Enjoy!

On Apr 23, 2:03 am, Staple <gwil@gmail.com> wrote:

Actually here is a screenshot anyway..

http://www.staple.co.nz/su/screen_shot.png

On Apr 23, 7:55 pm, Staple <gwil@gmail.com> wrote:

Arrrg,

So on my old Toshiba I was having problems with models getting random cuts through them in rendering, so I just received my brand new Toshiba T61p with a Quadro graphics card ... and, as well as not going any faster, the same thing happens .. does any body know why this is ... :-(

I can post a screenshot on my website if it is helpful,

Any help much appreciated,

Gwilym

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