aib

#!/usr/bin/env python

import math
import pygame
import random
import rtmidi
from rtmidi.midiconstants import *
import time

TAU = 2 * math.pi

jrh-spg

#!/bin/bash
# https://asciinema.org/a/6LZefsbvLjgsuwQHOnQsBEaSj
IF=notset
OF=notset
BS=128M
CURDIR=$(dirname $(realpath -s $0))
SCRIPT=`basename "$0"`

if [[ ! -f /usr/bin/pv ]]; then
   echo "pv is not installed. Please install pv and try again"

27810617

#        __        __
#       /  \      /  \
#       \__/      |  |
#        __       |  |                              __
#       /  \______|  |   ________    ________    __|  |__    ________
#       |   ______   |  /   __   \  /   _____|  |__    __|  /   _____|
#       |  |      \__/  |  /  \  |  |  |_____      |  |     |  |_____
#       |  |       __   |  |  |  |  \_____   \     |  |     \_____   \
#       |  |      /  \  |  \__/  |   _____|  |     |  |__    _____|  |
#       \__/      \__/  \________/  |________/     \_____|  |________/

JdaieLin

在树莓派上点亮微雪1.3寸LCD HAT所需的安装步骤，重新梳理了一下安装顺序。

使用最新Raspbian镜像，联网进行安装。

安装 WiringPi

cd ~
git clone git://git.drogon.net/wiringPi
cd wiringPi
./build

s4y

// https://stackoverflow.com/questions/15095909/from-rgb-to-hsv-in-opengl-glsl
vec3 rgb2hsv(vec3 c) {
    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));

    float d = q.x - min(q.w, q.y);
    float e = 1.0e-10;
    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}