{"id":14332,"date":"2026-05-20T10:42:40","date_gmt":"2026-05-20T01:42:40","guid":{"rendered":"https:\/\/r-dimension.xsrv.jp\/classes_j\/?p=14332"},"modified":"2026-05-20T11:16:03","modified_gmt":"2026-05-20T02:16:03","slug":"random-2026","status":"publish","type":"post","link":"https:\/\/r-dimension.xsrv.jp\/classes_j\/random-2026\/","title":{"rendered":"\u5076\u7136\u6027\u306e\u30c7\u30b6\u30a4\u30f3\uff08\u30e9\u30f3\u30c0\u30e0\u30fb\u30ce\u30a4\u30ba\uff09"},"content":{"rendered":"\n

\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001Processing\u306erandom()<\/code>\u3068noise()<\/code>\u3092\u4f7f\u3063\u3066\u3001\u5076\u7136\u6027\u306e\u3042\u308b\u8868\u73fe\u3092\u4f5c\u308b\u65b9\u6cd5\u3092\u5b66\u3073\u307e\u3059\u3002random()<\/code>\u306f\u30b5\u30a4\u30b3\u30ed\u306e\u3088\u3046\u306b\u6bce\u56de\u30d0\u30e9\u30d0\u30e9\u306a\u5024\u3092\u4f5c\u308a\u3001noise()<\/code>\u306f\u6ce2\u306e\u3088\u3046\u306b\u306a\u3081\u3089\u304b\u306b\u5909\u5316\u3059\u308b\u5024\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u6700\u521d\u306f\u6570\u5024\u3060\u3051\u3092\u78ba\u8a8d\u3057\u3001\u305d\u306e\u3042\u3068\u56f3\u5f62\u306e\u4f4d\u7f6e\u30fb\u5927\u304d\u3055\u30fb\u8272\u30fb\u52d5\u304d\u306b\u5fdc\u7528\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

1. random()\u3068\u306f<\/h2>\n\n\n\n

random()<\/code>\u306f\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u6570\u5024\u3092\u4f5c\u308b\u547d\u4ee4\u3067\u3059\u3002\u305f\u3068\u3048\u3070random(5)<\/code>\u3068\u66f8\u304f\u3068\u30010.0<\/code>\u4ee5\u4e0a\u30015.0<\/code>\u672a\u6e80\u306e\u6570\u5024\u304c\u4f5c\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

\u30ea\u30b9\u30c81<\/div>\n\n\n\n
void setup() {\n}\n\nvoid draw() {\n  \/\/ 0\u4ee5\u4e0a5\u672a\u6e80\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u6570\u5024\u3092\u8868\u793a\u3059\u308b\n  println(random(5));\n}<\/code><\/pre><\/div>\n\n\n\n
\u5b9f\u884c\u3059\u308b\u3068\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306b0.0<\/code>\u304b\u30895.0<\/code>\u672a\u6e80\u306e\u6570\u5024\u304c\u6b21\u3005\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u30015.0<\/code>\u306f\u542b\u307e\u308c\u306a\u3044\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n
\u66f8\u304d\u65b9<\/th>\u4f5c\u3089\u308c\u308b\u5024<\/th><\/tr>
random(5)<\/code><\/td>0.0<\/code>\u4ee5\u4e0a\u30015.0<\/code>\u672a\u6e80<\/td><\/tr>
random(10)<\/code><\/td>0.0<\/code>\u4ee5\u4e0a\u300110.0<\/code>\u672a\u6e80<\/td><\/tr>
random(-5, 5)<\/code><\/td>-5.0<\/code>\u4ee5\u4e0a\u30015.0<\/code>\u672a\u6e80<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
random()<\/code>\u306e\u7d50\u679c\u306ffloat<\/code>\u578b\u3067\u3059\u3002\u6574\u6570\u3068\u3057\u3066\u4f7f\u3044\u305f\u3044\u5834\u5408\u306f\u3001int()<\/code>\u3067\u5909\u63db\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u30ea\u30b9\u30c82<\/div>\n\n\n\n
void setup() {\n  \/\/ random(5)\u306f0.0\u4ee5\u4e0a5.0\u672a\u6e80\u306e\u5c0f\u6570\u3092\u4f5c\u308b\n  \/\/ int()\u3067\u5c0f\u6570\u3092\u6574\u6570\u306b\u5909\u63db\u3059\u308b\n  int n = int(random(5));\n\n  \/\/ 0, 1, 2, 3, 4\u306e\u3069\u308c\u304b\u304c\u8868\u793a\u3055\u308c\u308b\n  println(n);\n}<\/code><\/pre><\/div>\n\n\n\n
\u3053\u306e\u5834\u5408\u30010<\/code>\u30011<\/code>\u30012<\/code>\u30013<\/code>\u30014<\/code>\u306e\u3069\u308c\u304b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
2. \u30e9\u30f3\u30c0\u30e0\u306a\u4f4d\u7f6e\u306b\u5186\u3092\u63cf\u304f<\/h2>\n\n\n\n
\u6b21\u306b\u3001random()<\/code>\u3092\u4f7f\u3063\u3066\u5186\u3092\u30e9\u30f3\u30c0\u30e0\u306a\u4f4d\u7f6e\u306b\u63cf\u3044\u3066\u307f\u307e\u3059\u3002random(width)<\/code>\u306f\u753b\u9762\u306e\u6a2a\u5e45\u306e\u7bc4\u56f2\u3001random(height)<\/code>\u306f\u753b\u9762\u306e\u9ad8\u3055\u306e\u7bc4\u56f2\u3067\u5024\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c83<\/div>\n\n\n\n
void setup() {\n  size(400, 400);\n\n  \/\/ \u6700\u521d\u306b\u80cc\u666f\u3092\u767d\u306b\u3059\u308b\n  background(255);\n}\n\nvoid draw() {\n  \/\/ x\u5ea7\u6a19\u3068y\u5ea7\u6a19\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u6c7a\u3081\u3066\u5186\u3092\u63cf\u304f\n  ellipse(random(width), random(height), 30, 30);\n}<\/code><\/pre><\/div>\n\n\n\n
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001draw()<\/code>\u304c\u7e70\u308a\u8fd4\u3055\u308c\u308b\u305f\u3073\u306b\u3001\u9055\u3046\u5834\u6240\u3078\u5186\u304c\u63cf\u304b\u308c\u307e\u3059\u3002\u80cc\u666f\u3092\u6bce\u56de\u6d88\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u5186\u304c\u753b\u9762\u306b\u6b8b\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>random(width)<\/code>\u306f\u3001\u753b\u9762\u306e\u5de6\u7aef\u304b\u3089\u53f3\u7aef\u307e\u3067\u306e\u3069\u3053\u304b\u306e\u4f4d\u7f6e\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
3. \u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u30e9\u30f3\u30c0\u30e0\u306a\u7d75\u3092\u4f5c\u308b<\/h2>\n\n\n\n
\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u5186\u306e\u914d\u7f6e\u304c\u5909\u308f\u308a\u307e\u3059\u3002noLoop()<\/code>\u3067\u81ea\u52d5\u66f4\u65b0\u3092\u6b62\u3081\u3001mousePressed()<\/code>\u306e\u4e2d\u3067redraw()<\/code>\u3092\u547c\u3076\u3053\u3068\u3067\u3001\u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u3060\u3051\u63cf\u304d\u76f4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c84<\/div>\n\n\n\n
void setup() {\n  size(400, 400);\n\n  \/\/ draw()\u306e\u81ea\u52d5\u304f\u308a\u8fd4\u3057\u3092\u6b62\u3081\u308b\n  noLoop();\n}\n\nvoid draw() {\n  background(255);\n\n  \/\/ 100\u500b\u306e\u5186\u3092\u63cf\u304f\n  for (int i = 0; i < 100; i++) {\n    \/\/ \u753b\u9762\u5185\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u4f4d\u7f6e\u306b\u5186\u3092\u63cf\u304f\n    ellipse(random(width), random(height), 30, 30);\n  }\n}\n\nvoid mousePressed() {\n  \/\/ \u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u3068\u304d\u3060\u3051draw()\u30921\u56de\u5b9f\u884c\u3059\u308b\n  redraw();\n}<\/code><\/pre><\/div>\n\n\n\n
\u3053\u306e\u66f8\u304d\u65b9\u306b\u3059\u308b\u3068\u3001\u6bce\u30d5\u30ec\u30fc\u30e0\u63cf\u304d\u5909\u308f\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u3060\u3051\u65b0\u3057\u3044\u753b\u9762\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u30e9\u30f3\u30c0\u30e0\u306a\u4f5c\u54c1\u3092\u4f5c\u308b\u3068\u304d\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n
4. \u5927\u304d\u3055\u3068\u8272\u3082\u30e9\u30f3\u30c0\u30e0\u306b\u3059\u308b<\/h2>\n\n\n\n
\u5186\u306e\u4f4d\u7f6e\u3060\u3051\u3067\u306a\u304f\u3001\u5927\u304d\u3055\u3084\u8272\u306b\u3082random()<\/code>\u3092\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002\u3053\u308c\u3060\u3051\u3067\u3001\u5076\u7136\u6027\u306e\u3042\u308b\u753b\u9762\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c85<\/div>\n\n\n\n
void setup() {\n  size(400, 400);\n\n  \/\/ \u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u3060\u3051\u63cf\u304d\u76f4\u3059\n  noLoop();\n}\n\nvoid draw() {\n  background(255);\n\n  \/\/ 100\u500b\u306e\u5186\u3092\u63cf\u304f\n  for (int i = 0; i < 100; i++) {\n    \/\/ \u5186\u306e\u5927\u304d\u3055\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u6c7a\u3081\u308b\n    float s = random(5, 60);\n\n    \/\/ \u7dda\u306e\u8272\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u6c7a\u3081\u308b\n    stroke(random(50, 150), random(0, 100), random(50, 200), 200);\n\n    \/\/ \u5857\u308a\u306e\u8272\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u6c7a\u3081\u308b\n    fill(random(0, 200), random(0, 100), random(100, 255), 50);\n\n    \/\/ \u30e9\u30f3\u30c0\u30e0\u306a\u4f4d\u7f6e\u306b\u5186\u3092\u63cf\u304f\n    ellipse(random(width), random(height), s, s);\n  }\n}\n\nvoid mousePressed() {\n  \/\/ \u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u65b0\u3057\u3044\u30e9\u30f3\u30c0\u30e0\u306a\u753b\u9762\u306b\u306a\u308b\n  redraw();\n}<\/code><\/pre><\/div>\n\n\n\n
s<\/code>\u306f\u5186\u306e\u5927\u304d\u3055\u3067\u3059\u3002random(5, 60)<\/code>\u306b\u3088\u3063\u3066\u30015\u304b\u308960\u672a\u6e80\u306e\u5927\u304d\u3055\u304c\u6bce\u56de\u9078\u3070\u308c\u307e\u3059\u3002stroke()<\/code>\u3084fill()<\/code>\u306b\u3082\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u5165\u308c\u308b\u3053\u3068\u3067\u3001\u7dda\u306e\u8272\u3084\u5857\u308a\u306e\u8272\u3082\u5909\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
5. \u52d5\u304d\u306brandom()\u3092\u4f7f\u3046<\/h2>\n\n\n\n
random()<\/code>\u306f\u3001\u52d5\u304d\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u5186\u306e\u4f4d\u7f6e\u306b\u5c11\u3057\u3060\u3051\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u8db3\u3057\u3066\u3001\u9707\u3048\u3066\u3044\u308b\u3088\u3046\u306a\u52d5\u304d\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c86<\/div>\n\n\n\n
void setup() {\n  size(400, 400);\n  noStroke();\n}\n\nvoid draw() {\n  background(255);\n\n  \/\/ \u753b\u9762\u4e2d\u592e\u306e\u4f4d\u7f6e\u306b\u3001\u5c11\u3057\u3060\u3051\u30e9\u30f3\u30c0\u30e0\u306a\u305a\u308c\u3092\u8db3\u3059\n  float x = width\/2 + random(-5, 5);\n  float y = height\/2 + random(-5, 5);\n\n  fill(0);\n\n  \/\/ \u5c11\u3057\u9707\u3048\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u5186\u3092\u63cf\u304f\n  ellipse(x, y, 100, 100);\n}<\/code><\/pre><\/div>\n\n\n\n
random(-5, 5)<\/code>\u306b\u3088\u3063\u3066\u3001\u4e2d\u5fc3\u4f4d\u7f6e\u304b\u3089\u5c11\u3057\u3060\u3051\u305a\u308c\u305f\u5834\u6240\u306b\u5186\u304c\u63cf\u304b\u308c\u307e\u3059\u3002\u6bce\u30d5\u30ec\u30fc\u30e0\u305a\u308c\u65b9\u304c\u5909\u308f\u308b\u305f\u3081\u3001\u5186\u304c\u7d30\u304b\u304f\u632f\u52d5\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
6. \u8272\u306brandom()\u3092\u4f7f\u3046<\/h2>\n\n\n\n
\u80cc\u666f\u8272\u306brandom()<\/code>\u3092\u4f7f\u3046\u3068\u3001\u8272\u304c\u30c1\u30ab\u30c1\u30ab\u5909\u5316\u3057\u307e\u3059\u3002\u5b8c\u5168\u306b\u30e9\u30f3\u30c0\u30e0\u306b\u3059\u308b\u3068\u5909\u5316\u304c\u6fc0\u3057\u3059\u304e\u308b\u306e\u3067\u3001\u3053\u3053\u3067\u306f\u30b0\u30ec\u30fc\u306b\u8fd1\u3044\u8272\u306b\u5c11\u3057\u3060\u3051\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u8db3\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c87<\/div>\n\n\n\n
\/\/ \u57fa\u6e96\u306b\u306a\u308b\u30b0\u30ec\u30fc\u306e\u660e\u308b\u3055\nfloat gray = 120;\n\nvoid setup() {\n  size(400, 400);\n}\n\nvoid draw() {\n  \/\/ \u57fa\u6e96\u306e\u660e\u308b\u3055\u306b\u3001\u5c11\u3057\u3060\u3051\u30e9\u30f3\u30c0\u30e0\u306a\u5909\u5316\u3092\u8db3\u3059\n  float r = gray + random(-20, 20);\n  float g = gray + random(-20, 20);\n  float b = gray + random(-20, 20);\n\n  \/\/ \u6bce\u30d5\u30ec\u30fc\u30e0\u5c11\u3057\u9055\u3046\u80cc\u666f\u8272\u306b\u306a\u308b\n  background(r, g, b);\n}<\/code><\/pre><\/div>\n\n\n\n
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u8d64\u30fb\u7dd1\u30fb\u9752\u306e\u5024\u304c\u6bce\u56de\u5c11\u3057\u305a\u3064\u5909\u308f\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u80cc\u666f\u8272\u304c\u7d30\u304b\u304f\u63fa\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
7. noise()\u3068\u306f<\/h2>\n\n\n\n
noise()<\/code>\u3082\u4e0d\u898f\u5247\u306a\u5024\u3092\u4f5c\u308b\u547d\u4ee4\u3067\u3059\u304c\u3001random()<\/code>\u3068\u306f\u5927\u304d\u304f\u9055\u3044\u307e\u3059\u3002random()<\/code>\u306f\u6bce\u56de\u30d0\u30e9\u30d0\u30e9\u306a\u5024\u3092\u4f5c\u308a\u307e\u3059\u304c\u3001noise()<\/code>\u306f\u524d\u5f8c\u306e\u5024\u304c\u306a\u3081\u3089\u304b\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u547d\u4ee4<\/th>\u7279\u5fb4<\/th>\u5411\u3044\u3066\u3044\u308b\u8868\u73fe<\/th><\/tr>
random()<\/code><\/td>\u6bce\u56de\u30d0\u30e9\u30d0\u30e9\u306b\u5909\u5316\u3059\u308b<\/td>\u3061\u3089\u3064\u304d\u3001\u5076\u7136\u306e\u914d\u7f6e\u3001\u7a81\u7136\u306e\u5909\u5316<\/td><\/tr>
noise()<\/code><\/td>\u306a\u3081\u3089\u304b\u306b\u5909\u5316\u3059\u308b<\/td>\u6ce2\u3001\u96f2\u3001\u5730\u5f62\u3001\u3086\u3063\u304f\u308a\u3057\u305f\u52d5\u304d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
noise()<\/code>\u306e\u7d50\u679c\u306f\u3001\u5e38\u306b0.0<\/code>\u304b\u30891.0<\/code>\u306e\u7bc4\u56f2\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u307e\u307e\u3060\u3068\u5c0f\u3055\u3044\u5024\u306a\u306e\u3067\u3001\u753b\u9762\u306e\u5ea7\u6a19\u3084\u8272\u306b\u4f7f\u3046\u3068\u304d\u306f\u3001height<\/code>\u3084255<\/code>\u3092\u304b\u3051\u3066\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
8. noise()\u3067\u306a\u3081\u3089\u304b\u306a\u7dda\u3092\u4f5c\u308b<\/h2>\n\n\n\n
\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001noise()<\/code>\u3092\u4f7f\u3063\u3066\u3001\u306a\u3081\u3089\u304b\u306b\u5909\u5316\u3059\u308b\u7e26\u7dda\u306e\u9577\u3055\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c88<\/div>\n\n\n\n
\/\/ noise()\u306b\u5165\u308c\u308b\u5024\nfloat n = 0;\n\n\/\/ noise()\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\nfloat step = 0.02;\n\nvoid setup() {\n  size(400, 400);\n  background(255);\n}\n\nvoid draw() {\n  background(255);\n\n  \/\/ \u5de6\u7aef\u304b\u3089\u540c\u3058\u5f62\u3092\u63cf\u304d\u59cb\u3081\u308b\u305f\u3081\u3001n\u30920\u306b\u623b\u3059\n  n = 0;\n\n  \/\/ x\u30923\u305a\u3064\u5897\u3084\u3057\u306a\u304c\u3089\u3001\u7e26\u7dda\u3092\u4e26\u3079\u308b\n  for (int x = 0; x < width; x += 3) {\n    \/\/ noise(n)\u306f0.0\u301c1.0\u306a\u306e\u3067\u3001height\u3092\u304b\u3051\u3066\u753b\u9762\u306e\u9ad8\u3055\u306b\u5408\u308f\u305b\u308b\n    float y = noise(n) * height;\n\n    \/\/ \u4e0b\u304b\u3089\u4e0a\u306b\u5411\u304b\u3063\u3066\u7dda\u3092\u63cf\u304f\n    line(x, height, x, height - y);\n\n    \/\/ \u6b21\u306e\u7dda\u3067\u306f\u3001\u5c11\u3057\u9032\u3093\u3060\u30ce\u30a4\u30ba\u5024\u3092\u4f7f\u3046\n    n += step;\n  }\n}<\/code><\/pre><\/div>\n\n\n\n
noise(n)<\/code>\u306f0.0<\/code>\u304b\u30891.0<\/code>\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002\u305d\u3053\u306bheight<\/code>\u3092\u304b\u3051\u308b\u3053\u3068\u3067\u3001\u753b\u9762\u306e\u9ad8\u3055\u306b\u5408\u3063\u305f\u5024\u306b\u5909\u63db\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
step<\/code>\u306f\u3001\u30ce\u30a4\u30ba\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\u3092\u6c7a\u3081\u308b\u5024\u3067\u3059\u3002\u5c0f\u3055\u3044\u307b\u3069\u306a\u3081\u3089\u304b\u306b\u3001\u5927\u304d\u3044\u307b\u3069\u5909\u5316\u304c\u6fc0\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
9. random()\u3068noise()\u3092\u6bd4\u3079\u308b<\/h2>\n\n\n\n
\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u4e0a\u534a\u5206\u306brandom()<\/code>\u3001\u4e0b\u534a\u5206\u306bnoise()<\/code>\u3092\u4f7f\u3063\u3066\u7dda\u3092\u63cf\u304d\u307e\u3059\u3002\u9055\u3044\u3092\u898b\u6bd4\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c89<\/div>\n\n\n\n
\/\/ noise()\u306b\u5165\u308c\u308b\u5024\nfloat n = 0;\n\n\/\/ noise()\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\nfloat step = 0.02;\n\nvoid setup() {\n  size(400, 400);\n}\n\nvoid draw() {\n  background(255);\n  stroke(0);\n\n  \/\/ \u4e0a\u534a\u5206\uff1arandom()\u3067\u30d0\u30e9\u30d0\u30e9\u306a\u9ad8\u3055\u306e\u7dda\u3092\u63cf\u304f\n  for (int x = 0; x < width; x += 4) {\n    float y = random(180);\n    line(x, 180, x, 180 - y);\n  }\n\n  \/\/ \u4e0b\u534a\u5206\uff1anoise()\u3067\u306a\u3081\u3089\u304b\u306b\u3064\u306a\u304c\u308b\u9ad8\u3055\u306e\u7dda\u3092\u63cf\u304f\n  n = 0;\n\n  for (int x = 0; x < width; x += 4) {\n    float y = noise(n) * 180;\n    line(x, 400, x, 400 - y);\n    n += step;\n  }\n}<\/code><\/pre><\/div>\n\n\n\n
\u4e0a\u306erandom()<\/code>\u306f\u3001\u7dda\u306e\u9ad8\u3055\u304c\u6bce\u56de\u30d0\u30e9\u30d0\u30e9\u3067\u3059\u3002\u4e0b\u306enoise()<\/code>\u306f\u3001\u96a3\u306e\u7dda\u3068\u9ad8\u3055\u304c\u306a\u3081\u3089\u304b\u306b\u3064\u306a\u304c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
10. step\u306e\u5024\u3092\u30de\u30a6\u30b9\u3067\u5909\u3048\u308b<\/h2>\n\n\n\n
noise()<\/code>\u3067\u306f\u3001step<\/code>\u306e\u5024\u304c\u5927\u5207\u3067\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u30de\u30a6\u30b9\u306e\u6a2a\u4f4d\u7f6e\u306b\u3088\u3063\u3066step<\/code>\u3092\u5909\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c810<\/div>\n\n\n\n
\/\/ noise()\u306e\u958b\u59cb\u4f4d\u7f6e\nfloat start = 0;\n\nvoid setup() {\n  size(400, 400);\n}\n\nvoid draw() {\n  background(255);\n\n  \/\/ start\u304b\u3089\u30ce\u30a4\u30ba\u3092\u8aad\u307f\u59cb\u3081\u308b\n  float n = start;\n\n  \/\/ \u30de\u30a6\u30b9\u306ex\u5ea7\u6a19\u3067step\u306e\u5024\u3092\u5909\u3048\u308b\n  float step = map(mouseX, 0, width, 0.005, 0.1);\n\n  for (int x = 0; x < width; x += 3) {\n    \/\/ noise()\u306e\u5024\u3092\u753b\u9762\u306e\u9ad8\u3055\u306b\u5909\u63db\u3059\u308b\n    float y = noise(n) * height;\n\n    line(x, height, x, height - y);\n\n    \/\/ step\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u5f62\u306e\u5909\u5316\u304c\u8352\u304f\u306a\u308b\n    n += step;\n  }\n\n  fill(0);\n  text("step = " + step, 20, height - 20);\n}\n\nvoid mousePressed() {\n  \/\/ \u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u5225\u306e\u30ce\u30a4\u30ba\u306e\u5f62\u306b\u306a\u308b\n  start = random(10);\n}<\/code><\/pre><\/div>\n\n\n\n
\u30de\u30a6\u30b9\u3092\u5de6\u306b\u52d5\u304b\u3059\u3068\u3001step<\/code>\u304c\u5c0f\u3055\u304f\u306a\u308a\u3001\u5f62\u304c\u306a\u3081\u3089\u304b\u306b\u306a\u308a\u307e\u3059\u3002\u53f3\u306b\u52d5\u304b\u3059\u3068\u3001step<\/code>\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u5f62\u306e\u5909\u5316\u304c\u8352\u304f\u306a\u308a\u307e\u3059\u3002\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30ce\u30a4\u30ba\u306e\u958b\u59cb\u4f4d\u7f6e\u304c\u5909\u308f\u308b\u305f\u3081\u3001\u5225\u306e\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
11. \u8272\u306bnoise()\u3092\u4f7f\u3046<\/h2>\n\n\n\n
noise()<\/code>\u306f\u8272\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u6a2a\u65b9\u5411\u306b\u5c11\u3057\u305a\u3064\u660e\u308b\u3055\u304c\u5909\u308f\u308b\u30b9\u30c8\u30e9\u30a4\u30d7\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c811<\/div>\n\n\n\n
\/\/ noise()\u306e\u958b\u59cb\u4f4d\u7f6e\nfloat start = 0;\n\n\/\/ \u8272\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\nfloat step = 0.02;\n\nvoid setup() {\n  size(400, 400);\n}\n\nvoid draw() {\n  float n = start;\n\n  \/\/ \u753b\u9762\u306e\u5de6\u304b\u3089\u53f3\u3078\u30011px\u305a\u3064\u7e26\u7dda\u3092\u63cf\u304f\n  for (int x = 0; x < width; x++) {\n    \/\/ noise()\u306e\u5024\u30920\u301c255\u306e\u660e\u308b\u3055\u306b\u5909\u63db\u3059\u308b\n    float gray = noise(n) * 255;\n\n    stroke(gray);\n    line(x, 0, x, height);\n\n    \/\/ \u6b21\u306e\u7dda\u3067\u306f\u5c11\u3057\u9032\u3093\u3060\u30ce\u30a4\u30ba\u5024\u3092\u4f7f\u3046\n    n += step;\n  }\n}\n\nvoid mousePressed() {\n  \/\/ \u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u5225\u306e\u6a21\u69d8\u306b\u306a\u308b\n  start = random(10);\n}<\/code><\/pre><\/div>\n\n\n\n
noise(n) * 255<\/code>\u306b\u3088\u3063\u3066\u30010<\/code>\u304b\u3089255<\/code>\u306e\u660e\u308b\u3055\u3092\u4f5c\u3063\u3066\u3044\u307e\u3059\u3002\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30ce\u30a4\u30ba\u306e\u958b\u59cb\u4f4d\u7f6e\u304c\u5909\u308f\u308b\u305f\u3081\u3001\u9055\u3046\u6a21\u69d8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
12. RGB\u305d\u308c\u305e\u308c\u306bnoise()\u3092\u4f7f\u3046<\/h2>\n\n\n\n
\u6700\u5f8c\u306b\u3001\u8d64\u30fb\u7dd1\u30fb\u9752\u305d\u308c\u305e\u308c\u306b\u5225\u306e\u30ce\u30a4\u30ba\u3092\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002\u306a\u3081\u3089\u304b\u306b\u8272\u304c\u5909\u5316\u3059\u308b\u30ab\u30e9\u30d5\u30eb\u306a\u30b9\u30c8\u30e9\u30a4\u30d7\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u30ea\u30b9\u30c812<\/div>\n\n\n\n
\/\/ \u8d64\u30fb\u7dd1\u30fb\u9752\u3001\u305d\u308c\u305e\u308c\u306enoise()\u306e\u958b\u59cb\u4f4d\u7f6e\nfloat rStart = 0;\nfloat gStart = 10;\nfloat bStart = 20;\n\n\/\/ \u8272\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\nfloat step = 0.01;\n\nvoid setup() {\n  size(400, 400);\n}\n\nvoid draw() {\n  \/\/ \u305d\u308c\u305e\u308c\u306e\u8272\u306e\u30ce\u30a4\u30ba\u5024\u3092\u7528\u610f\u3059\u308b\n  float rNoise = rStart;\n  float gNoise = gStart;\n  float bNoise = bStart;\n\n  \/\/ \u753b\u9762\u306e\u5de6\u304b\u3089\u53f3\u3078\u30011px\u305a\u3064\u7e26\u7dda\u3092\u63cf\u304f\n  for (int x = 0; x < width; x++) {\n    \/\/ noise()\u306e\u5024\u30920\u301c255\u306e\u8272\u306b\u5909\u63db\u3059\u308b\n    float r = noise(rNoise) * 255;\n    float g = noise(gNoise) * 255;\n    float b = noise(bNoise) * 255;\n\n    stroke(r, g, b);\n    line(x, 0, x, height);\n\n    \/\/ \u6b21\u306e\u7dda\u3067\u306f\u3001\u5c11\u3057\u9032\u3093\u3060\u30ce\u30a4\u30ba\u5024\u3092\u4f7f\u3046\n    rNoise += step;\n    gNoise += step;\n    bNoise += step;\n  }\n}\n\nvoid mousePressed() {\n  \/\/ \u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u8d64\u30fb\u7dd1\u30fb\u9752\u305d\u308c\u305e\u308c\u306e\u958b\u59cb\u4f4d\u7f6e\u304c\u5909\u308f\u308b\n  rStart = random(10);\n  gStart = random(10);\n  bStart = random(10);\n}<\/code><\/pre><\/div>\n\n\n\n
RGB\u305d\u308c\u305e\u308c\u306b\u5225\u306e\u30ce\u30a4\u30ba\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u8272\u306e\u5909\u5316\u304c\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002random()<\/code>\u3060\u3051\u3067\u8272\u3092\u6c7a\u3081\u308b\u3068\u30c1\u30ab\u30c1\u30ab\u3057\u305f\u5370\u8c61\u306b\u306a\u308a\u307e\u3059\u304c\u3001noise()<\/code>\u3092\u4f7f\u3046\u3068\u3001\u306a\u3081\u3089\u304b\u306b\u3064\u306a\u304c\u308b\u8272\u306e\u5909\u5316\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u307e\u3068\u3081<\/h2>\n\n\n\n
\u547d\u4ee4<\/th>\u610f\u5473<\/th><\/tr>
random(a)<\/code><\/td>0.0<\/code>\u4ee5\u4e0a\u3001a<\/code>\u672a\u6e80\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u4f5c\u308b<\/td><\/tr>
random(a, b)<\/code><\/td>a<\/code>\u4ee5\u4e0a\u3001b<\/code>\u672a\u6e80\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u4f5c\u308b<\/td><\/tr>
int(random(a))<\/code><\/td>\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u6574\u6570\u306b\u5909\u63db\u3059\u308b<\/td><\/tr>
noise(n)<\/code><\/td>0.0<\/code>\u304b\u30891.0<\/code>\u306e\u3001\u306a\u3081\u3089\u304b\u306b\u5909\u5316\u3059\u308b\u5024\u3092\u4f5c\u308b<\/td><\/tr>
step<\/code><\/td>\u30ce\u30a4\u30ba\u306e\u5909\u5316\u306e\u7d30\u304b\u3055\u3092\u6c7a\u3081\u308b\u5024<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u4eca\u65e5\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>random()<\/code>\u306f\u6bce\u56de\u30d0\u30e9\u30d0\u30e9\u306a\u5909\u5316\u3001noise()<\/code>\u306f\u306a\u3081\u3089\u304b\u306b\u3064\u306a\u304c\u308b\u5909\u5316\u3067\u3059\u3002\u5076\u7136\u6027\u3092\u4f7f\u3063\u305f\u8868\u73fe\u3067\u306f\u3001\u3053\u306e2\u3064\u306e\u9055\u3044\u3092\u610f\u8b58\u3057\u3066\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001Processing\u306erandom()\u3068no… Read more »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,26],"tags":[],"class_list":["post-14332","post","type-post","status-publish","format-standard","hentry","category-processing","category-ii"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/14332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/comments?post=14332"}],"version-history":[{"count":7,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/14332\/revisions"}],"predecessor-version":[{"id":14357,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/14332\/revisions\/14357"}],"wp:attachment":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/media?parent=14332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/categories?post=14332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/tags?post=14332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}