chipmunk | library wrapping around the chipmunk-2d physics engine | Animation library
kandi X-RAY | chipmunk Summary
kandi X-RAY | chipmunk Summary
This is a library wrapping around the chipmunk-2d physics engine. This is the high-level wrapping, for the C interface, see the chipmunk-sys crate.
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chipmunk Examples and Code Snippets
Community Discussions
Trending Discussions on chipmunk
QUESTION
I am trying to create a pendulum with oscillating string and mass which is expected to oscillate for a period of time and then stop. From what I wrote, the mass could not stop oscillating. Kindly help me out.
...ANSWER
Answered 2020-Oct-12 at 14:30You did not provide damping in the last parameter of the call:
QUESTION
I have written the below program which is aimed at simulating a weight balancing experiment using knife edge. however, the weight of the box is not affecting the segment as shown when simulated. I am currently new on learning how to code with pymunk. kindly help me out on this
...ANSWER
Answered 2020-Aug-01 at 06:40The problem is that the the segment shape has its weight in one end, and not in the center. This happens because weight in Pymunk is collected at the position of the Body of the shape(s).
Try to change the segment code to something like this:
QUESTION
my first ever question on Stack Overflow as I'm learning Python (with absolute no programming background whatsoever).
I'v tried finding an answer but I don't undestand where my error is. If the question is inappropriate I will delete it and I apologize.
I'm following a MOOC about Python. Very early, when learning about parameters and functions I came across an error I don't understand.
Here is the code, while running it it says "SyntaxError: multiple statements found while compiling a single statement"
...ANSWER
Answered 2020-Jul-31 at 13:22When assign a value to a variable you have to use =
not ==
. Because ==
used for comparing two variables.
Replace user_answer == "B"
with:
QUESTION
I have a .mp3 file that contains just voice and I would like to adjust the speed (slower or faster) while maintaining the same clarity. No chipmunks! Then write out the modified file to disk. In order to do this, I am trying to use the AVAudioEngine Framework but am a complete N00B to the framework. All the examples, I have found, are geared to modifying music or recording voice then playing it audibly. I just want to convert to a different speed and have it spit out the modified file. This was all I could figure out so far, I documented my confusion in the comments of the code.
...ANSWER
Answered 2020-Jul-16 at 19:30Here is proof-of-concept code that speeds up a stereo M4A file and saves it as a WAVE file. There is minimal error handling and no attempt at handling different channel layouts, but hopefully it should get you started:
QUESTION
I only want to show Chip, but I get both Chip AND Dale. It doesn't seem to matter which 32 bit character I put in, tkinter seems to duplicate them - it's not just chipmunks.
I'm thinking that I may have to render them to png and then place them as images, but that seems a bit ... heavy-handed.
Any other solutions? Is tkinter planning on fixing this?
...ANSWER
Answered 2020-Jul-07 at 15:58The fundamental problem is that Tcl and Tk are not very happy with non-BMP (Unicode Basic Multilingual Plane) characters. Prior to 8.6.10, what happens is anyone's guess; the implementation simply assumed such characters didn't exist and was known to be buggy when they actually turned up (there's several tickets on various aspects of this). 8.7 will have stronger fixes in place (see TIP #389 for the details) — the basic aim is that if you feed non-BMP characters in, they can be got out at the other side so they can be written to a UTF-8 file or displayed by Tk if the font engine deigns to support them — but some operations will still be wrong as the string implementation will still be using surrogates. 9.0 will fix things properly (by changing the fundamental character storage unit to be large enough to accommodate any Unicode codepoint) but that's a disruptive change.
With released versions, if you can get the surrogates over the wall from Python to Tcl, they'll probably end up in the GUI engine which might do the right thing. In some cases (not including any build I've currently got, FWIW, but I've got strange builds so don't read very much into that). With 8.7, sending over UTF-8 will be able to work; that's part of the functionality profile that will be guaranteed. (The encoding functions exist in older versions, but with 8.6 releases they will do the wrong thing with non-BMP UTF-8 and break weirdly with older versions than that.)
QUESTION
i try to concat multiple videos to one video and add an background music to it.
for some reason the background music is perfectly added to the output video but the audio of each part of the output is speed up to a chipmunk version of the video itself. this results in an output video of 7 minutes with about 5 minutes of silence since everything is so fast that all the audio finishes after about 2 minutes.
my command is:
ffmpeg -safe 0 -i videolist.ffconcat -i bg_loop.mp3 -y -filter_complex "[1:0]volume=0.3[a1];[0:a][a1]amix=inputs=2" -vcodec libx264 -r 25 -filter:v scale=w=1920:h=1080 -map 0:v:0 output.mp4
i tried to remove the background music (since i wasn't able to loop it through the video i thought maybe that's the issue) and still.. all the audio of the video clips is still speed up resulting in chaotic audio at the beginning and silence at the end.
my video list looks like this:
...ANSWER
Answered 2020-May-27 at 04:15The concat demuxer requires that all streams in inputs have the same properties. For audio, that includes codec, sampling rate, channel layout, sample format..
If audio of some inputs is sounding funny after concat, that usually indicates a sampling rate mismatch. Run ffprobe -show_streams -select_streams a -v 0 "input-file"
on each input to check. For those which are different, you can re-encode only the audio by adding -ar X
where X is the most common sampling rate found among your inputs e.g. -ar 44100
. Other parameters will depend on format details. Keep video by using -c:v copy
.
QUESTION
I am using pandas and pulling information from excel into a list, that part works great and my lists are coming back and I can print them out just fine with no NaN or errors.
However when I go to iterate through them I am encountering an issue with the string index being out of range after the first iteration or when itr is 1 as it prints the first one just fine then errors at the line site = site[itr]
.
The site array or list if you will which is comprised of numeric values. I get the count of the number of rows pulled from excel as the index limiter called toSend.
I added site = [str(i) for i in site]
because I was getting the error that the int object is not subscriptable.
I'm not sure where I turned left at, any help is very much appreciated.
******* Updated to MRE as requested *******
...ANSWER
Answered 2020-Feb-05 at 19:48Updated:
Its because you are overwriting your variables.
So name
starts as an array:
QUESTION
I am trying to learn PyMunk library and I used the example from their website. Here is a code:
...ANSWER
Answered 2017-Aug-27 at 22:53You should try connecting PyMunk with PyGame or PyGlet to be able to viualize any results through a window. See more here: http://www.pymunk.org/en/latest/
QUESTION
I'm writing a function that its input is a text file as below:
...ANSWER
Answered 2019-Nov-11 at 22:50You can try the following piece of code:
QUESTION
I am trying to write a function that uses indices that takes key-value pairs and stacks them.
Here is my data:
...ANSWER
Answered 2019-Nov-08 at 21:20We can create a numeric index with gl
and split
the dataset into list
of data.frame
, rename
the list
elements with map
and join it rowwise
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