Subject:
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Re: LPub 2.1.0.3 released
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Newsgroups:
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lugnet.cad, lugnet.inst
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Date:
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Sun, 5 Jan 2003 14:25:46 GMT
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Viewed:
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825 times
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I ran into the want for orthographic camera, with my pneumatic adding
machine MOC, and made some discoveries.
You can simulate orthographic images with a camera angle of 1. I tried
using 0, but L3P silently ignores this and assumes you want the default
angle of 67 degrees. I modified LPub so the lowest possible angle is 1, and
I get no perspective.
Lars, is the -ca0 silently getting mapped to camera angle of 67 a "feature"
or a bug?
Kevin
In lugnet.cad, Kevin Clague writes:
> I just got another email discussing the use of orthographic camera and
> building instructions. The two do not work well together, and won't for the
> forseeable future.
>
> LPub leaves it to L3P to determine the camera settings. For a given LDraw
> file, LPub uses L3P to create the sequence of POV files. LPub then examines
> the sequence to find the camera setting that has the camera the farthest
> away from the model. LPub then modifies the camera settings for the entire
> sequence of POVs to use the maximum distance settings. This provides
> consistant spacial scale across the entire sequence.
>
> The orthographic option that LPub provides simply uncomments the
> orthographic keyword that L3P places in the POV-Files, but in doing so, it
> provides possibility that the model is not framed as desired.
>
> I suggest not using orthographic camera settings. Instead I recommend using
> a larger camera angle. The larger the camera angle the less perspective.
> LPub's default camera angle is larger than L3P's camera angle for this very
> reason (reduce the effects of perspective.)
>
> Lars, are there any plans to add orthographic camera support to L3P, so
> folks can eliminate perspective and still get that wonderful framing
> mechanism you have in L3P?
>
> Kevin
>
>
> In lugnet.cad, Richard Morton writes:
> > Kevin,
> > Well done on this newer version - it is a HUGE improvement over the previous
> > earlier version and I no longer get the calculation errors I used to get
> > with the numeric fields.
> >
> > I do however have one strange problem that I think is a bug;
> >
> > I am generation a set of renders to use as instructions for one of my custom
> > models.
> > To do this, I customise the settings and then generate a 'Complete Assembly'
> > render as a test to see if camera angles, lighting etc are okay.
> > Once I am happy that everything is ok, I attempt to do an 'Instruction
> > Images' render, to gernerate the step by step images. This however isn't
> > working properly as it is not using the same settings that 'Complete
> > Assembly' uses.
> > Specifically, I have a Globe Camera set with a Radius of -20 to move the
> > camera back a little (as I am using Orthographic, sometimes the corners of
> > the model get cut off if I don't do this). I am also using the POV>Rendering
> > setting of 'Ambient Light Only (high)'. Unfortunately, the camera redius it
> > is using is 0 and the render setting appears to be 'Media and Radiosity
> > (low - default)' even though it is not set that way.
> >
> > I don't know if it is significant, but I have noticed that even if I save
> > the config as either a local or global and restart LPub, the render setting
> > always comes up as 'Media and Radiosity (low - default)' instead of the
> > Ambient Only.
> >
> > If you need me to supply all the settings I use, I can, but can you please
> > advise me how to get this working? I am currently breaking the Model file
> > into a file for each step and then doing a 'Complete Assembly' generation on
> > each file. This of course is a lot slower than doing an 'Instruction Images'
> > render, but it is the only way I have found to get LPub to render using all
> > the settings I supply.
> >
> > Thanks for the great software and the help,
> >
> > Richard.
> >
> >
> > "Kevin Clague" <kevin_clague@yahoo.com> wrote in message
> > news:H6HsoD.68J@lugnet.com...
> > > LPub 2.1.0.3 has been released to http://www.users.qwest.net/~kclague/LPub
> > >
> > > This is a bug fix release:
> > > - Single image generation complains that lsynth is not installed
> > > - LPub forgets where LDraw and L3P are installed when saving global • config
> > > - Selecting specify output file name for POV-Ray doesn't complain if no
> > > file name provided
> > > - LPub can't handle names with multiple periods
> > > - POV-Ray anti-aliasing threshold option formatted incorrectly
> > > - POV-Ray output image dimensions mislabeled
> > >
> > > These bugs were found by Willy Tschager and the reporting is much • appreciated.
> > >
> > > One feature as added for this release:
> > > - support for CLEAR meta-command
> > >
> > > Kevin Clague
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Message has 2 Replies:
 | | Re: LPub 2.1.0.3 released
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| So to clarify, rather than use the ortho setting, you are choosing the camera angle setting and using a 1? Is that it, or are you doing additional stuff? I was playing around last night and was noticing that the creations weren't always centered (...) (22 years ago, 5-Jan-03, to lugnet.cad, lugnet.inst)
| | | Re: LPub 2.1.0.3 released
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| (...) 1 degree practically corresponds to orthographic camera. You can also use e.g. 0.01, the camera will be put very far away then. See the effect of various camera angles at (URL) I should add an example of 1 degree... (...) Yes, it is being (...) (22 years ago, 5-Jan-03, to lugnet.cad, lugnet.inst)
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Message is in Reply To:
| | Re: LPub 2.1.0.3 released
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| I just got another email discussing the use of orthographic camera and building instructions. The two do not work well together, and won't for the forseeable future. LPub leaves it to L3P to determine the camera settings. For a given LDraw file, (...) (22 years ago, 22-Dec-02, to lugnet.cad, lugnet.inst)
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