Pavel Peřina pavel-perina
pavel-perina
/ 2023-08-14-photography-calculations.ipynb
Last active
August 17, 2023 19:46
Night time photography calculations (sky coverage, star trail length)
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pavel-perina
/ untrusted-lvl3-solution.js
Created
December 13, 2022 16:13
— forked from Untrusted-Game/untrusted-lvl3-solution.js
Solution to level 3 in Untrusted: http://alex.nisnevich.com/untrusted/
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| /************************ | |
| * validationEngaged.js * | |
| ************************ | |
| * | |
| * They're really on to us now! The validateLevel function | |
| * has been activated to enforce constraints on what you can | |
| * do. In this case, you're not allowed to remove any blocks. | |
| * | |
| * They're doing all they can to keep you here. But you | |
| * can still outsmart them. |
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| # matplotlib, pandas, suntime, ipykernel (vscode) | |
| # https://www.nordtheme.com | |
| # https://astral.readthedocs.io/en/latest/index.html | |
| #%% | |
| import datetime | |
| from astral import sun, LocationInfo | |
| import pandas as pd | |
| import matplotlib.pyplot as plt | |
| import matplotlib.dates as mdates |
pavel-perina
/ gist:0e7e6716385485d9a4fee7c296300eb7
Last active
November 22, 2017 16:39
C/C++ code snippets
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| // ----------------------------------------------------------------------------------- | |
| /// @brief Difference between two angles in radians, difference is inside -PI..PI | |
| /// @todo: verify sign | |
| /// NOTE: same function in Collision\col_math.cpp | |
| __inline double AngleDiffRad (double a, double b) | |
| { | |
| double r = fmod (b - a, M_PI+M_PI); | |
| if (r < 0.0) | |
| r += M_PI+M_PI; | |
| if (r > M_PI) |
pavel-perina
/ video_command_line.txt
Last active
November 4, 2022 22:12
Video encoding (command line, batch files, ...)
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| d:\apps\mplayer\mencoder mf://out*.jpg -mf w=1024:h=896:fps=10:type=jpg -o out-lq.avi -nosound -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=3000 | |
| rem d:\apps\mplayer\mencoder mf://out*.jpg -mf w=1024:h=896:fps=10:type=jpg -o out.avi -nosound -ovc x264 -x264encopts subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid=normal:weight_b | |
| d:\old-d\apps\mplayer\mencoder mf://vid00*.png -mf w=1280:h=720:fps=30:type=png -o vid00.avi -nosound -ovc x264 -x264encopts subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid=normal:weight_b | |
| d:\old-d\apps\mplayer\mencoder mf://vid01*.png -mf w=1280:h=720:fps=30:type=png -o vid01.avi -nosound -ovc x264 -x264encopts subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid=normal:weight_b | |
| d:\apps\mplayer\mencoder mf://@tissue-list.txt -mf w=1920:h=1200:fps=30:type=png -o out.avi -nosound -ovc x264 -x264encopts subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid=normal:weight_b | |
| d:\apps\mplayer\mencoder mf://solder2-*.png -mf w=1280:h= |
pavel-perina
/ resize.sh
Last active
June 7, 2017 21:03
Subpixel image resizing using imagemagick convert
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| #!/bin/sh | |
| convert ResizeTestImage.png -gamma 0.5 -filter Mitchell -resize 800x200! -morphology Convolve "3x1: 0.33, 0.34, 0.33" -channel Red -morphology Convolve "3x1: 0.0, 0.0, 1.0" -channel Green -morphology Convolve "3x1: 0.0, 1.0, 0.0" -channel Blue -morphology Convolve "3x1: 1, 0, 0" +channel -filter Point -resize 267x200! -gamma 2.0 -depth 8 ResizeTestSubpixel.png |
pavel-perina
/ fixed_aspect_ratio_qlayout.h
Last active
June 15, 2023 12:33
QLayout that keeps fixed aspect ratio of it's only widget.
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| /* | |
| Copyright (c) 2017 Pavel Perina | |
| Permission is hereby granted, free of charge, to any person obtaining a copy | |
| of this software and associated documentation files (the "Software"), to deal | |
| in the Software without restriction, including without limitation the rights | |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| copies of the Software, and to permit persons to whom the Software is | |
| furnished to do so, subject to the following conditions: |