Animation manually triggered
Hi folks,
I don't have tell you that OpenSCAD's animations are a very great tool for
many things. Like many others here I use it frequently to study the
"dynamics" of multi object designs, or to capture the "3D-ness" of a design
into a film sequence. Today I found a nice feature, which I had always
missed. Seems to be a bug, but a very useful one, especially for debugging
purposes.
Setting any steps value and FPS=0 lets you interactively "trigger" the time
increment by any translation or rotation (but not with a scale) of the view
with the mouse. Until we get a slider for FPS (and a wheel for the time)
this method is quite practical when debugging or studying animations.
Rudolf
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Interestingly, typing characters in the edit pane also triggers it.
Go to a blank line and hit the space bar.
A Play/pause and single step set of buttons would be a good thing.
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Another way of achieving this would be to type e.g.n “$t = 0.1;” into the editor, position the cursor on the number and press alt-up/down arrow.
Only works in a development snapshot
-Marius
I often end up wanting to alternate between running the FPS as fast as
it will compute, or pause on demand, so I end up putting a value like
"1e10" into FPS, then adding/deleting a minus sign to pause it:
"1e-10"
I often use animation for models that aren't even animated, just so the
preview automatically updates as I work on the design. I have always thought
that it's a bit of a pain how clunky it is to enable animation. I would
prefer if there were some defaults for the rates and steps so that it was
one click or one menu item to enable it.
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I completely agree with Greg. One way I think it could be made more
accessible would be:
a) display the animation toolbar by default
b) include reasonable default FPS and steps (maybe 30fps, 100steps) ?
c) add a play/pause button to enable/disable on the fly
Then you would have a single button to start animation, that doesn't
have to be enabled from any dropdown menu, and no other values to fill
in.
On Mon, Apr 24, 2017 at 1:41 AM, Greg Frost
Gregorybartonfrost@gmail.com wrote:
I often use animation for models that aren't even animated, just so the
preview automatically updates as I work on the design. I have always thought
that it's a bit of a pain how clunky it is to enable animation. I would
prefer if there were some defaults for the rates and steps so that it was
one click or one menu item to enable it.
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Actually, thinking slightly more about the problem, the default
animation FPS and steps values would probably be best placed as
settings in the preferences menu.
On Mon, Apr 24, 2017 at 10:12 AM, Hans L thehans@gmail.com wrote:
I completely agree with Greg. One way I think it could be made more
accessible would be:
a) display the animation toolbar by default
b) include reasonable default FPS and steps (maybe 30fps, 100steps) ?
c) add a play/pause button to enable/disable on the fly
Then you would have a single button to start animation, that doesn't
have to be enabled from any dropdown menu, and no other values to fill
in.
On Mon, Apr 24, 2017 at 1:41 AM, Greg Frost
Gregorybartonfrost@gmail.com wrote:
I often use animation for models that aren't even animated, just so the
preview automatically updates as I work on the design. I have always thought
that it's a bit of a pain how clunky it is to enable animation. I would
prefer if there were some defaults for the rates and steps so that it was
one click or one menu item to enable it.
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I'd suggest adding the specific ideas to the existing issue
https://github.com/openscad/openscad/issues/891
Most of the ideas can't be solved without a slightly bigger
change anyway, e.g. right now animation is active as soon
as the panel is visible. So I think the best option is to
untangle the existing logic and then we can add more features
too.
ciao,
Torsten.
I'm playing with some 3D modelling software that has a slightly different
UI for animation.
For interactive use, there is a "start/stop animation" button (no numeric
parameters required): it looks the same as the start/stop video button on
YouTube. This is a familiar and convenient interface.
The $time variable is set to elapsed seconds since the beginning of
animation, which is suitable for realtime animation, and there is a
separate variable for the current frame number, although that is less
commonly used.
With this kind of interface, you would only need to specify numeric
parameters when exporting an animation (eg, # of seconds and FPS).
On 24 April 2017 at 11:19, Hans L thehans@gmail.com wrote:
Actually, thinking slightly more about the problem, the default
animation FPS and steps values would probably be best placed as
settings in the preferences menu.
On Mon, Apr 24, 2017 at 10:12 AM, Hans L thehans@gmail.com wrote:
I completely agree with Greg. One way I think it could be made more
accessible would be:
a) display the animation toolbar by default
b) include reasonable default FPS and steps (maybe 30fps, 100steps) ?
c) add a play/pause button to enable/disable on the fly
Then you would have a single button to start animation, that doesn't
have to be enabled from any dropdown menu, and no other values to fill
in.
On Mon, Apr 24, 2017 at 1:41 AM, Greg Frost
Gregorybartonfrost@gmail.com wrote:
I often use animation for models that aren't even animated, just so the
preview automatically updates as I work on the design. I have always
thought
that it's a bit of a pain how clunky it is to enable animation. I would
prefer if there were some defaults for the rates and steps so that it
was
one click or one menu item to enable it.
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Animation-manually-triggered-tp21347p21363.html
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If some bigger change is made to brush up the animation interface, please
also provide a possiblity to programmatically set the physical framesize.
The method I use now is to set the viewport size with the mouse, which is
very cumbersome. Or did I miss something?
I'd expect something like:
$vps = [1280, 720]; // set viewport size
and a conditional expression to set it:
$animation =true; // maintained by the animation interface like $t
$vps = $animation?[55, 0, 25]:$vps;
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