POV-Ray : Newsgroups : povray.text.tutorials : Animation Mini-Tutorial : Re: Animation Mini-Tutorial Server Time
2 Jun 2024 14:19:47 EDT (-0400)
  Re: Animation Mini-Tutorial  
From: Mike White
Date: 22 Feb 2000 18:16:30
Message: <38b318ce@news.povray.org>
Quick question about the clock "variable"

With the following settings:

Initial_Frame=1
Final_Frame=10
Initial_Clock=0
Final_Clock=1
Cyclic_Animation=on

I assume clock will equal 0.0 for frame 1, the question is about frame 2,
and 10.

Will the clock equal 0.1 for frame 2?  If so will the clock equal 0.9 for
frame 10?

Or

Will the clock equal 0.111... for frame 2, and 1.0 for frame 10?




K. Tyler <tyl### [at] pacbellnet> wrote in message
news:35E6A0A5.49A142BE@pacbell.net...
> Greetings !
>
>     Yesterday I replied to another POV-Ray user on how to
> use the animation feature in POV-Ray 3.0x. I went into
> enough detail for this person that I thought it might make
> a good mini-tutorial on the subject for new users or users
> that haven't gotten their feet wet, yet, with animations.
>
> So here with a couple of modifications is the body of text
> I sent the other user.
>
> Lets create an object to animate:
>
> camera{location<0,0,-4>look_at 0}
> light_source{<0,0,-50>rgb 1}
>
> sphere{<0,0,0>,1 pigment{gradient x
> color_map{[0 rgb<1,0,0>][1 rgb 1]}}
> finish{ambient .4 diffuse .1 reflection .1 specular 1 roughness .001}
> rotate 360*y*clock}
>
>     The above won't do anything during a single frame render.
>
>     First let me explain a couple things. To produce an animation
> you will need to produce several images, just like cartoon
> animators do. Secondly you will need a program, external to
> POV-Ray to compile the multiple images produced into an
> animation. A great little command line animation program called
> DTA or Dave's targa animator does a great job. If you don't have
> it and can't find it post a message to the povray animation news
> group and somebody will tell you where to get a copy. It produces
> .fli .flc and a couple other animation types. There are other programs
> you can use but I think DTA is a good one to start with.
>
>     Now for the specifics of making the frames you need.
> The following describes how to rotate your sphere once
> in a 360 degree circle. You could change rotate 360*y*clock
> to 720*y*clock to make it rotate twice or any other multiple
> of 360 you choose to use.
>
>     On your menu bar find the tools section and click on
> edit master povray.ini. Add the following lines anywhere
> in the ini file, save and exit.
>
> ;Initial_Frame = 1
> ;Final_Frame   = 100
> ;Subset_Start_Frame = 50
> ;Subset_End_Frame = 100
> ;Cyclic_Animation = on
>
> To use these settings you need to un-comment the functions you
> want to use by removing the ";".
>
> To produce a simple continuous animation start with these settings:
>
>   Initial_Frame      = 1
>   Final_Frame       = 10
>  Cyclic_Animation = on
>
>     This will produce a 10 frame animation.
>
>     The initial frame tells Pov you want to start with frame #1
>
>     The final frame tells Pov how many frames (images) you want
> to produce. The more you specify the smoother the animation
> but the larger the animation file size. You will later learn how
> to balance the # vs. file size as you gain experiance.
>
>     The use cyclic animation tells Pov you want it to produce
> an animation that will loop continuously. If your animation
> had an object moving in a straight line this would be of no use
> to you. Since we are looking at an object that is going to turn
> 360 degrees on it's axis this is a perfect example of when to use
> it.
>
>     The other two settings can be used to render only a
> portion of the frames that make up an animation. Say
> you wanted only to look at the end of your scene,
> before rendering 1000 frames, to make sure everything
> ends up where it is supposed to. This will allow you to
> to so. It's not normally needed however.
>
>     There are many other examples in the docs and I
> strongly recommend you read the section on using
> the clock values in your scenes and the section 4
> tutorial on animation.
>
>     Don't forget to re-comment the animation lines in the
> master povray.ini when you are not doing animation
> or else the next non animation scene you try to run
> will run the exact same image for however many frames
> you have specified in the final frames section.
>
>     Need more help ?
>
>     Let me know.
>
>     K.Tyler
>
> I can be reached at: tyl### [at] pacbellnet
>


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