{"id":5333,"date":"2016-06-16T14:26:16","date_gmt":"2016-06-16T05:26:16","guid":{"rendered":"http:\/\/r-dimension.xsrv.jp\/classes_j\/?p=5333"},"modified":"2020-05-27T12:32:11","modified_gmt":"2020-05-27T03:32:11","slug":"physics","status":"publish","type":"post","link":"https:\/\/r-dimension.xsrv.jp\/classes_j\/physics\/","title":{"rendered":"4.6\u3000\u904b\u52d52\uff08\u7269\u7406\u73fe\u8c61\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff09"},"content":{"rendered":"\n<p>\u30b2\u30fc\u30e0\u306a\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u81ea\u7136\u754c\u306e\u7269\u7406\u73fe\u8c61\u3092\u6570\u5b66\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u3063\u3066\u518d\u73fe\u3057\u305f\u3082\u306e\u304c\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u6570\u5f0f\u81ea\u4f53\u306f\u6bd4\u8f03\u7684\u30b7\u30f3\u30d7\u30eb\u306a\u3082\u306e\u3082\u591a\u3044\u306e\u3067\u3001\u3053\u3053\u3067\u306f\u3001\u57fa\u790e\u7684\u306a\u7269\u4f53\u306e\u843d\u4e0b\u3084\u653e\u7269\u7dda\u306a\u3069\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f53\u9a13\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.6.1\u3000\u91cd\u529b<\/h2>\n\n\n\n<p>\u30dc\u30fc\u30eb\u304c\u843d\u4e0b\u3059\u308b\u904b\u52d5\u3067\u3059\u3002\u91cd\u529b\uff08gravity\uff09\u3068\u53cd\u767a\u529b\uff08reaction\uff09\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_30.png\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_30-284x300.png\" alt=\"2016_09_28_3_30\" class=\"wp-image-6500\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_30-284x300.png 284w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_30.png 400w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/a><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-a<\/div>\n\n\n\n<!--more-->\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-a<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float y = 0.0;    \/\/\u30dc\u30fc\u30eb\u306ey\u5ea7\u6a19\nfloat velocity = 0.0;    \/\/\u30dc\u30fc\u30eb\u306e\u521d\u901f\nfloat gravity = 0.1;    \/\/\u30dc\u30fc\u30eb\u306b\u304b\u304b\u308b\u91cd\u529b\nfloat reaction = 0.7;    \/\/\u30dc\u30fc\u30eb\u306e\u53cd\u767a\u529b\n\nvoid setup() {\n  size(400, 400);\n  background(255);\n  noStroke();\n  fill(0);\n}\n\nvoid draw() {\n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n\n  velocity += gravity;    \/\/\u30b9\u30d4\u30fc\u30c9\u306b\u91cd\u529b\u304c\u52a0\u7b97\u3055\u308c\u308b\n  y += velocity;    \/\/\u30dc\u30fc\u30eb\u306b\u30b9\u30d4\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u308b\n\n  if (y &gt; height) {    \/\/\u3082\u3057\u30dc\u30fc\u30eb\u304c\u753b\u9762\u306e\u4e0b\u307e\u3067\u843d\u3061\u305f\u3089\u3001\n    velocity *= -reaction;    \/\/\u53cd\u767a\u529b\u306b\u3088\u3063\u3066\u4e0a\u306b\u4e0a\u304c\u308b\n    y = height;    \/\/\u30dc\u30fc\u30eb\u306f\u753b\u9762\u306e\u5916\u306b\u5916\u308c\u306a\u3044\n  }\n  \n  ellipse(width\/2, y, 20, 20);    \/\/\u30dc\u30fc\u30eb\u3092\u63cf\u304f\n}\n\n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u3069\u3046\u3067\u3057\u3087\u3046\u304b\u3002\u6bd4\u8f03\u7684\u30b7\u30f3\u30d7\u30eb\u306a\u30b3\u30fc\u30c9\u3067\u3001\u3042\u305f\u304b\u3082\u91cd\u529b\u304c\u3042\u308b\u3068\u3053\u308d\u306b\u5f3e\u6027\u306e\u3042\u308b\u30dc\u30fc\u30eb\u304c\u843d\u3061\u305f\u304b\u306e\u3088\u3046\u306a\u904b\u52d5\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.6.2\u3000\u653e\u7269\u7dda<\/h2>\n\n\n\n<p>\u6b21\u306f\u3082\u3046\u5c11\u3057\u8907\u96d1\u306a\u904b\u52d5\u306b\u306a\u308a\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u306f\u3010\u30ea\u30b9\u30c84.6-a\u3011\u306e\u30b5\u30f3\u30d7\u30eb\u306bx\u8ef8\u65b9\u5411\u306e\u52d5\u304d\u3068\u6469\u64e6\u3092\u52a0\u3048\u305f\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_31.png\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_31-284x300.png\" alt=\"2016_09_28_3_31\" class=\"wp-image-6501\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_31-284x300.png 284w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_3_31.png 400w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/a><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-b<\/div>\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-b<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float x, y;    \/\/\u30dc\u30fc\u30eb\u306ey\u5ea7\u6a19\nfloat velX = 5.0;    \/\/\u30dc\u30fc\u30eb\u306ex\u8ef8\u306e\u521d\u901f\nfloat velY = 0.0;    \/\/\u30dc\u30fc\u30eb\u306ey\u8ef8\u306e\u521d\u901f\nfloat gravity = 0.6;    \/\/\u30dc\u30fc\u30eb\u306b\u304b\u304b\u308b\u91cd\u529b\nfloat reaction = 0.7;    \/\/\u30dc\u30fc\u30eb\u306e\u53cd\u767a\u529b\nfloat damp = 0.9;    \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\n\nvoid setup() {\n  size(300, 300);\n  background(255);\n  noStroke();\n  fill(0);\n  x = y = 0.0;  \/\/x, y\u30920.0\u3067\u521d\u671f\u5316\n}\n\nvoid draw() {\n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n\n  ellipse(x, y, 20, 20);    \/\/\u30dc\u30fc\u30eb\u3092\u63cf\u304f\n\n  velY += gravity;    \/\/\u30b9\u30d4\u30fc\u30c9\u306b\u91cd\u529b\u304c\u52a0\u7b97\u3055\u308c\u308b\n\n  x += velX;\/\/\u30dc\u30fc\u30eb\u306b\u30b9\u30d4\u30fc\u30c9\u3092\u52a0\u7b97\n  y += velY;\n\n  \/\/\u30dc\u30fc\u30eb\u304c\u753b\u9762\u306e\u6a2a\u5e45\u3092\u8d85\u3048\u305f\u3089\u53cd\u5bfe\u306e\u5411\u304d\u306b\u306a\u308b\n  if (x &gt; width || x &lt; 0) velX = -velX;\n\n  if (y &gt; height) {    \/\/\u3082\u3057\u30dc\u30fc\u30eb\u304c\u753b\u9762\u306e\u4e0b\u307e\u3067\u843d\u3061\u305f\u3089\u3001\n    velY *= -reaction;    \/\/\u53cd\u767a\u529b\u306b\u3088\u3063\u3066\u4e0a\u306b\u4e0a\u304c\u308b\n    velX *= damp;    \/\/velX\u3092\u6e1b\u8870\n    y = height;    \/\/\u30dc\u30fc\u30eb\u306f\u753b\u9762\u306e\u5916\u306b\u5916\u308c\u306a\u3044\n  }\n}\n\n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.6.3\u3000\u3070\u306d<\/h2>\n\n\n\n<p>\u3070\u306d\u306e\u52d5\u304d\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u5f0f\u306b\u3088\u3063\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30d5\u30c3\u30af\u306e\u6cd5\u5247\u3067\u306f<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">F = kx<\/h5>\n\n\n\n<p><strong>\u30fbF = \u3070\u306d\u306e\u53cd\u767a\u529b<br>\u30fbk = \u3070\u306d\u306e\u5f37\u3055\u3002\u3070\u306d\u5b9a\u6570\u3068\u3082\u547c\u3070\u308c\u308b<br>\u30fbx = \u3070\u306d\u304c\u81ea\u7136\u306b\u505c\u6b62\u3059\u308b\u4f4d\u7f6e\u304b\u3089\u306e\u4f38\u7e2e<\/strong><\/p>\n\n\n\n<p>\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u304c\u305d\u306e\u52d5\u304d\u3092\u30b3\u30fc\u30c9\u306b\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30de\u30a6\u30b9\u30af\u30ea\u30c3\u30af\u3067\u3001\u5186\u306e\u4f4d\u7f6e\u304c\u30de\u30a6\u30b9\u306ey\u5ea7\u6a19\u307e\u3067\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36-284x300.png\" alt=\"\" class=\"wp-image-10357\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36-284x300.png 284w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36-565x596.png 565w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36-768x810.png 768w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36-624x658.png 624w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_36.png 800w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-c<\/div>\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-c<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float y;           \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ey\u5ea7\u6a19\nfloat k = 0.1;     \/\/\u3070\u306d\u306e\u5f37\u3055\nfloat velY = 0.0;  \/\/y\u65b9\u5411\u306e\u30b9\u30d4\u30fc\u30c9\nfloat force = 0;   \/\/\u3070\u306d\u306e\u53cd\u767a\u529b\nfloat originY;     \/\/\u57fa\u6e96\u70b9\n\nvoid setup() {\n  size(400, 400);\n  background(255);\n  \n  y = 0;             \/\/\u958b\u59cb\u6642\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ey\u5ea7\u6a19\u306f0\n  originY = 200;  \/\/\u3070\u306d\u306e\u9577\u3055\u306f200\n}\n\nvoid draw() { \n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n\n  stroke(0);\n  line(width\/2, 0, width\/2, y);\n\n  float distY = originY - y;  \/\/\u57fa\u6e96\u70b9\u304b\u3089\u306e\u8ddd\u96e2\n  force = k * distY;    \/\/\u3070\u306d\u306e\u529b\u3092\u8a08\u7b97\uff08F = kx\uff09\n  velY += force;  \/\/\u3070\u306d\u306e\u529b\u3092\u30b9\u30d4\u30fc\u30c9\u306b\u8db3\u3059\n  y += velY;                     \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u79fb\u52d5\n\n  fill(0);\n  ellipse(width\/2, y, 40, 40);   \/\/\u5186\u3092\u63cf\u753b\n}\n\n\/\/\u30af\u30ea\u30c3\u30af\u3067\u5186\u306e\u4f4d\u7f6e\u3092\u30de\u30a6\u30b9\u306ey\u5ea7\u6a19\u306b\u3059\u308b\nvoid mousePressed() {\n  y = mouseY;\n} \n\n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    stroke(255, 10);\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3060\u3068\u6c38\u9060\u306b\u52d5\u304d\u7d9a\u3051\u308b\u306e\u3067<strong>\u300c\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u300d<\/strong>\u3068\u3001<strong>\u300c\u3070\u306d\u306e\u5148\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u91cd\u3055\u300d<\/strong>\u306b\u3088\u308b\u52a0\u901f\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42-284x300.png\" alt=\"\" class=\"wp-image-10358\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42-284x300.png 284w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42-565x596.png 565w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42-768x810.png 768w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42-624x658.png 624w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_42.png 800w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-d<\/div>\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-d<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float y;             \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ey\u5ea7\u6a19\nfloat mass = 10.1;   \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8cea\u91cf\nfloat k = 0.3;       \/\/\u3070\u306d\u306e\u5f37\u3055\uff08\u3070\u306d\u5b9a\u6570\uff09\nfloat damp = 0.97;   \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u7387\nfloat velY = 0.0;    \/\/y\u65b9\u5411\u306e\u30b9\u30d4\u30fc\u30c9\nfloat accel = 0;     \/\/\u52a0\u901f\u5ea6\nfloat force = 0;     \/\/\u3070\u306d\u306e\u53cd\u767a\u529b \nfloat originY;       \/\/\u57fa\u6e96\u70b9\n\n\nvoid setup() {\n  size(400, 400);\n  background(255);\n\n  y = 0;             \/\/\u958b\u59cb\u6642\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ey\u5ea7\u6a19\u306f0\n  originY = 200;  \/\/\u3070\u306d\u306e\u9577\u3055\u306f200\n}\n\nvoid draw() {\n\n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n\n  stroke(0);\n  line(width\/2, 0, width\/2, y);\n\n  float distY = originY - y;  \/\/\u57fa\u6e96\u70b9\u304b\u3089\u306e\u8ddd\u96e2\n  force = k * distY;    \/\/\u3070\u306d\u306e\u529b\u3092\u8a08\u7b97\uff08F = kx\uff09\n  accel = force \/ mass;            \/\/\u91cd\u3055\u306b\u3088\u308b\u52a0\u901f\u5ea6\u3092\u8a08\u7b97\n  velY = damp * (velY + accel);      \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u3092\u8a08\u7b97\n  y += velY;                       \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u79fb\u52d5\n\n  fill(0);\n  ellipse(width\/2, y, 40, 40);     \/\/\u5186\u3092\u63cf\u753b\n}\n\n\/\/\u30af\u30ea\u30c3\u30af\u3067\u5186\u306e\u4f4d\u7f6e\u3092\u30de\u30a6\u30b9\u306ey\u5ea7\u6a19\u306b\u3059\u308b\nvoid mousePressed() {\n  y = mouseY;\n} \n\n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    stroke(255, 10);\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u6700\u5f8c\u306bx\u65b9\u5411\u306b\u3082\u52d5\u6c17\u3092\u3064\u3051\u3066\u3001\u3055\u3089\u306b\u30de\u30a6\u30b9\u306b\u8ffd\u5f93\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><a href=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/motion_spring_accel_xy.png\"><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"300\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_44-284x300.png\" alt=\"\" class=\"wp-image-10359\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_44-284x300.png 284w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2020_05_23_13_44.png 400w\" sizes=\"auto, (max-width: 284px) 100vw, 284px\" \/><\/a><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-e<\/div>\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-e<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float x, y;              \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ey\u5ea7\u6a19\nfloat mass = 2.5;        \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8cea\u91cf\nfloat k = 0.1;           \/\/\u3070\u306d\u306e\u5f37\u3055\uff08\u3070\u306d\u5b9a\u6570\uff09\nfloat damp = 0.9;        \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u7387\nfloat velX, velY;        \/\/y\u65b9\u5411\u306e\u30b9\u30d4\u30fc\u30c9\nfloat accelX, accelY;    \/\/\u52a0\u901f\u5ea6\nfloat forceX, forceY;    \/\/\u3070\u306d\u306e\u53cd\u767a\u529b \nfloat originX, originY;  \/\/\u57fa\u6e96\u70b9\n\n\nvoid setup() {\n\n  size(400, 400);\n  background(255);\n\n  x = originX = width \/ 2;  \/\/\u958b\u59cb\u6642\u306e\u5186\u306e\u4f4d\u7f6e\u3092\u753b\u9762\u4e2d\u592e\u3067\u521d\u671f\u5316\n  y = originY = height \/ 2;\n}\n\nvoid draw() {\n\n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n\n  stroke(0);\n  line(x, y, mouseX, mouseY);\n  \n  originX = mouseX;  \/\/\u3070\u306d\u306e\u57fa\u6e96\u70b9\u3092\u30de\u30a6\u30b9\u5ea7\u6a19\u306b\u3059\u308b\n  originY = mouseY;\n  \n  float distX = originX - x;  \/\/\u57fa\u6e96\u70b9\u304b\u3089\u306e\u8ddd\u96e2\n  forceX = k * distX;    \/\/\u3070\u306d\u306e\u529b\u3092\u8a08\u7b97\uff08F = kx\uff09\n  accelX = forceX \/ mass;            \/\/\u91cd\u3055\u306b\u3088\u308b\u52a0\u901f\u5ea6\u3092\u8a08\u7b97\n  velX = damp * (velX + accelX);      \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u3092\u8a08\u7b97\n  x += velX;                       \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u79fb\u52d5\n\n  float distY = originY - y;  \/\/\u57fa\u6e96\u70b9\u304b\u3089\u306e\u8ddd\u96e2\n  forceY = k * distY;    \/\/\u3070\u306d\u306e\u529b\u3092\u8a08\u7b97\uff08F = kx\uff09\n  accelY = forceY \/ mass;            \/\/\u91cd\u3055\u306b\u3088\u308b\u52a0\u901f\u5ea6\u3092\u8a08\u7b97\n  velY = damp * (velY + accelY);      \/\/\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u3092\u8a08\u7b97\n  y += velY;                       \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u79fb\u52d5\n\n  fill(0);\n  ellipse(x, y, 40, 40);     \/\/\u5186\u3092\u63cf\u753b\n} \n\n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    stroke(255, 10);\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.6.4\u3000\u632f\u308a\u5b50<\/h2>\n\n\n\n<p>\u632f\u308a\u5b50\u306e\u5834\u5408\u306f\u3001\u3082\u3046\u5c11\u3057\u8907\u96d1\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_4_45.png\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"175\" src=\"http:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_4_45-300x175.png\" alt=\"2016_09_28_4_45\" class=\"wp-image-6511\" srcset=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_4_45-300x175.png 300w, https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-content\/uploads\/2016\/06\/2016_09_28_4_45.png 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<div class=\"imgCaption\">\u56f34.6-f<\/div>\n\n\n\n<div class=\"listCaption\">\u30ea\u30b9\u30c84.6-f<\/div>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>float x, y;             \/\/\u5186\u306e\u5ea7\u6a19\nfloat R = 220;          \/\/\u56de\u8ee2\u534a\u5f84\nfloat rad = -0.5*PI;  \/\/\u30b9\u30bf\u30fc\u30c8\u6642\u306e\u56de\u8ee2\u89d2\nfloat angle_vel = 0.0;        \/\/\u89d2\u901f\u5ea6\nfloat gravity = 0.3;    \/\/\u91cd\u529b\nfloat angle_accel;            \/\/\u89d2\u52a0\u901f\u5ea6\nfloat damp = 0.998;     \/\/\u6e1b\u8870\u7387\n \nvoid setup() {\n  size(500, 270);\n  background(255);\n  noStroke();\n  fill(0);\n}\n \nvoid draw() {\n  \/\/\u30d5\u30a7\u30fc\u30c9\u3059\u308b\u6642\u306ftrue\u3001\u3057\u306a\u3044\u5834\u5408\u306ffalse\n  fade(false);\n \n  \/\/\u89d2\u52a0\u901f\u5ea6\u306f\u3001(-1*\u91cd\u529b\/\u56de\u8ee2\u534a\u5f84)*sin(\u89d2\u5ea6)\n  angle_accel = (-1*gravity\/R)*sin(rad);  \/\/\u89d2\u52a0\u901f\u5ea6\u3092\u8a08\u7b97\n \n  angle_vel += angle_accel;  \/\/\u89d2\u901f\u5ea6\u3092\u8a08\u7b97\n  \/\/angle_vel *= damp;         \/\/\u6e1b\u8870\u7387\u3092\u8a08\u7b97\n  rad += angle_vel;          \/\/\u89d2\u5ea6\u306b\u89d2\u901f\u5ea6\u3092\u8a08\u7b97  \n \n  \/\/\u4e00\u756a\u4e0b\u306f\u5186\u306e\u89d2\u5ea6\u3060\u306890\u5ea6\uff08-90\u5ea6\u3067\u306f\u306a\u3044\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5834\u5408\u306fy\u65b9\u5411\u304c\u53cd\u5bfe\uff09\u3002\n  \/\/\u30e9\u30b8\u30a2\u30f3\u306b\u3059\u308b\u30680.5PI\u306a\u306e\u3067\u3001\u8a08\u7b97\u7d50\u679c\u306b90\u5ea6\u8db3\u3057\u3066\u3044\u308b\u3002\n  x = R*cos(rad + 0.5*PI);\n  y = R*sin(rad + 0.5*PI);\n \n  stroke(0);\n  line(width\/2, 0, x + width\/2, y);   \/\/\u7dda\n  noStroke();\n  ellipse(x + width\/2, y, 30, 30);      \/\/\u5186\n}\n \n\/\/\u30d5\u30a7\u30fc\u30c9\u7528\u95a2\u6570\nvoid fade(boolean _fadeFlag) {\n  if (_fadeFlag) {\n    fill(255, 10);  \/\/\u900f\u660e\u5ea6\u306e\u3042\u308brect\u3092\u63cf\u753b\n    rect(0, 0, width, height);\n    fill(0);      \/\/\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u9ed2\n  } else {\n    background(255);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3092\u305d\u306e\u307e\u307e\u518d\u751f\u3059\u308b\u3068\u3001\u6469\u64e6\u306b\u3088\u308b\u6e1b\u8870\u304c\u8003\u616e\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u305a\u3063\u3068\u52d5\u304d\u7d9a\u3051\u307e\u3059\u3002\u305d\u3053\u3067\u300124\u884c\u76ee\uff08\/\/angle_vel *= damp;\uff09\u306e\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3092\u5916\u3057\u3066\u89d2\u901f\u5ea6\u3092\u6e1b\u8870\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u304b\u306a\u308a\u30ea\u30a2\u30eb\u306a\u632f\u308a\u5b50\u306e\u52d5\u304d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-aphph-prism-block lang:processing language-processing\"><code>angle_vel *= damp;         \/\/\u6e1b\u8870\u7387\u3092\u8a08\u7b97<\/code><\/pre>\n\n\n\n<pre lang=\"java\" line=\"1\">angle_vel *= damp;         \/\/\u6e1b\u8870\u7387\u3092\u8a08\u7b97\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u30b2\u30fc\u30e0\u306a\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u81ea\u7136\u754c\u306e\u7269\u7406\u73fe\u8c61\u3092\u6570\u5b66\u7684\u30a2\u30eb\u30b4\u30ea&#8230; <a href=\"https:\/\/r-dimension.xsrv.jp\/classes_j\/physics\/\">Read more &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,27],"tags":[],"class_list":["post-5333","post","type-post","status-publish","format-standard","hentry","category-processing","category-27"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/5333","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=5333"}],"version-history":[{"count":44,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/5333\/revisions"}],"predecessor-version":[{"id":10481,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/posts\/5333\/revisions\/10481"}],"wp:attachment":[{"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/media?parent=5333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/categories?post=5333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/r-dimension.xsrv.jp\/classes_j\/wp-json\/wp\/v2\/tags?post=5333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}