{"id":4246,"date":"2015-07-10T04:04:26","date_gmt":"2015-07-09T19:04:26","guid":{"rendered":"http:\/\/r-dimension.xsrv.jp\/classes_j\/?p=4246"},"modified":"2020-11-18T16:12:49","modified_gmt":"2020-11-18T07:12:49","slug":"translate-rotate-scale","status":"publish","type":"post","link":"https:\/\/r-dimension.xsrv.jp\/classes_j\/translate-rotate-scale\/","title":{"rendered":"4.1\u3000\u5ea7\u6a19\u5909\u63db"},"content":{"rendered":"\n

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\u901a\u5e38\u306f\u5fc5\u305a\u753b\u9762\u306e\u5de6\u4e0a\u304c(0, 0)\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u5ea7\u6a19\u3092\u79fb\u52d5\u3059\u308b\u3068\u3001\u5de6\u4e0a\u304c(0, 0)\u3067\u306a\u304f\u306a\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u4f8b\u3048\u3070\u3001translate() \u79fb\u52d5\u3001rotate() \u56de\u8ee2\u3001scale() \u62e1\u5927\u7e2e\u5c0f\u3092\u9806\u756a\u306b\u5b9f\u884c\u3059\u308b\u5834\u5408\u3001\u6982\u5ff5\u7684\u306b\u306f\u3010\u56f34.1-a\u3011\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\"matrix\"<\/a><\/figure>\n\n\n\n
\u56f34.1-a<\/div>\n\n\n\n

4.1.1\u3000translate\uff08\u79fb\u52d5\uff09<\/h2>\n\n\n\n

\u305d\u308c\u3067\u306f\u3001\u307e\u305a\u5ea7\u6a19\u7cfb\u3092\u79fb\u52d5\u3059\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u3081\u307e\u3059\u3002
\u53f3\u65b9\u5411\u306b100\u30d4\u30af\u30bb\u30eb\u3001\u4e0b\u65b9\u5411\u306b100\u30d4\u30af\u30bb\u30eb\u79fb\u52d5\u3057\u3066\u307f\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u306b\u306ftranslate(x, y)<\/strong>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\"7_10_15__03_44\"<\/figure>\n\n\n\n
\u56f34.1-b<\/div>\n\n\n\n\n\n\n\n
\u30ea\u30b9\u30c84.1-a<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\n\/\/\u5ea7\u6a19\u7cfb\u3092(x\u5ea7\u6a19100, y\u5ea7\u6a19100\u306b\u79fb\u52d5\ntranslate(100, 100);\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
\u3053\u3053\u3067\u6ce8\u610f\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u306e\u306f\u3001\u4e00\u898b\u56db\u89d2\u5f62\u304c\u52d5\u3044\u3066\u3044\u308b\u304b\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u5b9f\u306f\u3001\u5ea7\u6a19\u5168\u4f53\u304c\u52d5\u3044\u3066\u3044\u308b<\/strong>\u306e\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u300c\u4e16\u754c\u300d\u5168\u4f53\u304c\u52d5\u3044\u3066\u3044\u308b<\/strong>\u306e\u3067\u3059\u3002
\u6b21\u306b\u3001translate()\u30922\u56de\u7d9a\u3051\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_42\"<\/figure>\n\n\n\n
\u56f34.1-c<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-b<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\n\/\/1\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/\u5ea7\u6a19\u7cfb\u3092(x\u5ea7\u6a19100, y\u5ea7\u6a19100)\u306b\u79fb\u52d5\ntranslate(100, 100);\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n\n\/\/2\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/\u5ea7\u6a19\u7cfb\u30921\u3064\u524d\u306e\u79fb\u52d5\u4f4d\u7f6e\u304b\u3089(x\u5ea7\u6a19103, y\u5ea7\u6a19103)\u79fb\u52d5\ntranslate(103, 103);\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u9752\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(100, 100, 255, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(0, 0, 255, 127);  \/\/\u534a\u900f\u660e\u306e\u9752\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
\u3053\u3053\u3067\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u4e00\u5ea6translate\u3059\u308b\u3068\u3001\u6b21\u306etranslate\u306f\u3059\u3067\u306b\u79fb\u52d5\u3057\u305f\u5730\u70b9\u3092\u57fa\u6e96\u70b9\u3068\u3057\u3066\u3055\u3089\u306b\u79fb\u52d5\u3059\u308b<\/strong>\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n
4.1.2\u3000rotate\uff08\u56de\u8ee2\uff09<\/h2>\n\n\n\n
\u540c\u3058\u8981\u9818\u3067\u5ea7\u6a19\u7cfb\u3092\u56de\u8ee2\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_46\"<\/figure>\n\n\n\n
\u56f34.1-d<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-c<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\n\/\/\u5ea7\u6a19\u7cfb\u3092\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u6642\u8a08\u65b9\u5411\u306b30\u5ea6\u56de\u8ee2\nrotate(radians(30));\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 50, 50);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
\u6b21\u306brotate\u30922\u56de\u304a\u3053\u306a\u3063\u3066\u307f\u307e\u3059\u3002translate\u306e\u6642\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u306f\u3058\u3081\u306b30\u5ea6\u56de\u8ee2\u3057\u3066\u6b21\u306b\u3055\u3089\u306b30\u5ea6\u56de\u8ee2\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u5408\u8a0860\u5ea6\u56de\u8ee2\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_48\"<\/figure>\n\n\n\n
\u56f34.1-e<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-d<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\n\/\/1\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/\u5ea7\u6a19\u7cfb\u3092\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u6642\u8a08\u65b9\u5411\u306b30\u5ea6\u56de\u8ee2\nrotate(radians(30));\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 50, 50);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n\n\/\/2\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/\u5ea7\u6a19\u7cfb\u3092\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u6642\u8a08\u65b9\u5411\u306b30\u5ea6\u56de\u8ee2\nrotate(radians(30));\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u9752\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(100, 100, 255, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(0, 0, 255, 127);  \/\/\u534a\u900f\u660e\u306e\u9752\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
4.1.3\u3000scale\uff08\u62e1\u5927\uff0f\u7e2e\u5c0f\uff09<\/h2>\n\n\n\n
\u3055\u3089\u306b\u5ea7\u6a19\u7cfb\u3092\u62e1\u5927\uff0f\u7e2e\u5c0f\u3057\u3066\u307f\u307e\u3059\u3002\u7b49\u500d\u306f1.0\u3001\u6700\u5c0f\u5024\u306f0.0\u306b\u306a\u308a\u307e\u3059\u30022\u500d\u306e\u5834\u5408\u306f2.0\u306b\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n
\"7_10_15__03_50\"<\/figure>\n\n\n\n
\u56f34.1-f<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-e<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/\u56db\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\nscale(0.8);  \/\/\u5ea7\u6a19\u7cfb\u309280%\u7e2e\u5c0f\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 40, 40);  \/\/\u56db\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
scale\u30920.8\uff0880\uff05\uff09\u306b\u5909\u63db\u3059\u308b\u306e\u4f5c\u696d\u30922\u56de\u304a\u3053\u306a\u3063\u305f\u5834\u5408\u3001\u5143\u306e\u5927\u304d\u3055\u306e64%\uff080.8 x 0.8 = 0.64\uff09\u306e\u5927\u304d\u3055\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_51\"<\/figure>\n\n\n\n
\u56f34.1-g<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-f<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n\nbackground(255);\n\n\/\/1\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\nscale(0.8);  \/\/\u5ea7\u6a19\u7cfb\u309280%\u7e2e\u5c0f\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n\n\/\/2\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/\u5ea7\u6a19\u7cfb\u3092\u3055\u3089\u306b80%\u7e2e\u5c0f \u2192 \u5143\u304b\u3089\u306f0.8 x 0.8 = 0.64 = 64%\u306b\u306a\u308b\nscale(0.8);\n\n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u9752\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(100, 100, 255, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n\nfill(0, 0, 255, 127);  \/\/\u534a\u900f\u660e\u306e\u9752\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b<\/code><\/pre>\n\n\n\n
4.1.4\u3000for\u6587\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5ea7\u6a19\u7cfb\u3092\u8868\u793a\u3059\u308b<\/h2>\n\n\n\n
\u524d\u8ff0\u306e\u30b5\u30f3\u30d7\u30eb\u3082\u30012\u3064\u306e\u5ea7\u6a19\u7cfb\u3092\u540c\u6642\u8868\u793a\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001for\u6587\u3092\u4f7f\u3048\u3070\u8907\u6570\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b0\u30ea\u30c3\u30c9\u3092\u975e\u8868\u793a\u306b\u3059\u308b\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u305f\u304f\u3055\u3093\u751f\u6210\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u91cd\u8981\u306a\u306e\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u8907\u88fd\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5b58\u5728\u3059\u308b\u4e16\u754c\uff08\u5ea7\u6a19\uff09\u304c\u8907\u88fd\u3055\u308c\u3066\u3044\u308b\u300d<\/strong>\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u3002
\u3010\u30ea\u30b9\u30c84.1-g\u3011\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u7e26\u6a2a43\u30d4\u30af\u30bb\u30eb\u305a\u3064\u79fb\u52d5\u3057\u3066\u3001\u305d\u306e\u79fb\u52d5\u309210\u56de\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_53\"<\/figure>\n\n\n\n
\u56f34.1-h<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-g<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n \nbackground(255);\n \nfor (int i = 0; i < 10; i ++) {  \/\/10\u56de\u7e70\u308a\u8fd4\u3059\n  translate(43, 43);  \/\/\u5ea7\u6a19\u7cfb\u3092(x\u5ea7\u6a1943, y\u5ea7\u6a1943\u306b\u79fb\u52d5\n \n  int r = int(random(255));    \/\/\u30e9\u30f3\u30c0\u30e0\u306b\u8272\u3092\u6c7a\u5b9a\n  int g = int(random(255));\n  int b = int(random(255));\n \n  \/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\n  stroke(r, g, b, 127);\n  for (int x = 0; x <= 400; x += 20) {\n    line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n  }\n  for (int y = 0; y <= 400; y += 20) {\n    line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n  }\n \n  fill(r, g, b, 127);\n  rect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n}<\/code><\/pre>\n\n\n\n
4.1.5\u3000pushMatrix, popMatrix\uff08\u5ea7\u6a19\u7cfb\u306e\u4fdd\u5b58\u3068\u547c\u3073\u51fa\u3057\uff09<\/h2>\n\n\n\n
\u8907\u88fd\u3059\u308b\u5834\u5408\u306f\u3053\u308c\u3067\u3082\u554f\u984c\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u5ea7\u6a19\u3092\u52a0\u7b97\u6e1b\u7b97\u3057\u3066\u3044\u304f\u65b9\u6cd5\u306f\u3001\u76f4\u611f\u7684\u306b\u306f\u304b\u306a\u308a\u5206\u304b\u308a\u306b\u304f\u3044\u3068\u3044\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4eca\u307e\u3067\u5b66\u7fd2\u3057\u305f\u5ea7\u6a19\u306e\u6307\u5b9a\u306b\u8fd1\u3044\u65b9\u6cd5\u3082\u3042\u308a\u3001\u305d\u308c\u306fpushMatrix, popMatrix\u306b\u3088\u3063\u3066\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002
pushMatrix\u306b\u3088\u3063\u3066\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\u3057\u3066\u3001popMatrix\u306b\u3088\u3063\u3066\u4fdd\u5b58\u3057\u305f\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059\u3068\u3044\u3046\u624b\u9806\u3092\u8e0f\u307f\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_58\"<\/figure>\n\n\n\n
\u56f34.1-i<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-h<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n \nbackground(255);\n \n\/\/1\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n \npushMatrix(); \/\/\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\ntranslate(100, 100);  \/\/\u5ea7\u6a19\u7cfb\u3092(x\u5ea7\u6a19100, y\u5ea7\u6a19100)\u306b\u79fb\u52d5\n \n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(255, 150, 150, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n \nfill(255, 0, 0, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n \npopMatrix(); \/\/\u524d\u306e\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059\n \n\/\/2\u3064\u76ee\u306e4\u89d2\u5f62\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n \npushMatrix(); \/\/\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\n\/\/\u5ea7\u6a19\u7cfb\u3092\u5143\u306e\u57fa\u6e96\u70b9\u304b\u3089(x\u5ea7\u6a19103, y\u5ea7\u6a19103)\u79fb\u52d5\ntranslate(103, 103);\n \n\/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u9752\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\nstroke(100, 100, 255, 127);\nfor (int x = 0; x <= 400; x += 20) {\n  line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n}\nfor (int y = 0; y <= 400; y += 20) {\n  line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n}\n \nfill(0, 0, 255, 127);  \/\/\u534a\u900f\u660e\u306e\u9752\nrect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n \npopMatrix(); \/\/\u524d\u306e\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059<\/code><\/pre>\n\n\n\n
\u3053\u3053\u3067\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u30011\u56de\u76ee\u306e\u79fb\u52d5\u306e\u5f8c\u30012\u56de\u76ee\u306e\u79fb\u52d5\u306e\u524d\u306b\u307e\u305f\u57fa\u6e96\u70b9\u304c(0, 0)\u306b\u623b\u3063\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u3053\u306e\u3053\u3068\u306b\u3088\u3063\u3066\u30012\u56de\u76ee\u3082\u3001(103, 103)\u3068\u3044\u3046\u76f4\u611f\u7684\u306b\u4f4d\u7f6e\u3092\u78ba\u8a8d\u3057\u3084\u3059\u3044\u5ea7\u6a19\u306b\u56db\u89d2\u5f62\u3092\u79fb\u52d5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002for\u6587\u3092\u4f7f\u3063\u3066\u63cf\u753b\u3059\u308b\u3068\u3010\u56f34.1-j\u3011\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__03_55\"<\/figure>\n\n\n\n
\u56f34.1-j<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-i<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n \nbackground(255);\n \nfor (int i = 43; i < 400; i += 43) {  \/\/10\u56de\u7e70\u308a\u8fd4\u3059\n \npushMatrix(); \/\/\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\n \n  \/\/\u5ea7\u6a19\u7cfb\u3092(x\u5ea7\u6a1943*i, y\u5ea7\u6a1943*i\u306b\u79fb\u52d5\n  translate(i, i);\n \n  int r = int(random(255));    \/\/\u30e9\u30f3\u30c0\u30e0\u306b\u8272\u3092\u6c7a\u5b9a\n  int g = int(random(255));\n  int b = int(random(255));\n \n  \/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\n  stroke(r, g, b, 127);\n  for (int x = 0; x <= 400; x += 20) {\n    line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n  }\n  for (int y = 0; y <= 400; y += 20) {\n    line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n  }\n \n  fill(r, g, b, 127);\n  rect(0, 0, 40, 40);  \/\/4\u89d2\u5f62\u3092\u63cf\u753b\n \n  popMatrix(); \/\/\u524d\u306e\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059\n}<\/code><\/pre>\n\n\n\n
4.1.6\u3000translate, rotate, pushMatrix, popMatrix\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/h2>\n\n\n\n
\u3053\u308c\u3089\u3092\u5fdc\u7528\u3059\u308b\u3068\u56f3\u5f62\u3092\u5186\u72b6\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u304c\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__04_00\"<\/figure>\n\n\n\n
\u56f34.1-k<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-j<\/div>\n\n\n\n
size(400, 400);\nrectMode(CENTER);  \/\/4\u89d2\u5f62\u306e\u57fa\u6e96\u70b9\u3092\u4e2d\u5fc3\u306b\u5909\u66f4\n \nbackground(255);\n \ntranslate(width\/2, height\/2);  \/\/\u5ea7\u6a19\u7cfb\u3092\u753b\u9762\u4e2d\u592e\u306b\u79fb\u52d5\n \nfor (int i = 0; i <= 180; i += 30) {\n \n  pushMatrix(); \/\/\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\n  rotate(radians(i));  \/\/\u5ea7\u6a19\u7cfb\u3092\u56de\u8ee2\n \n  int r = int(random(255));    \/\/\u30e9\u30f3\u30c0\u30e0\u306b\u8272\u3092\u6c7a\u5b9a\n  int g = int(random(255));\n  int b = int(random(255));\n \n  \/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u8d64\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\n  stroke(r, g, b, 127);\n  for (int x = 0; x <= 400; x += 20) {\n    line(x, 0, x, 400);  \/\/\u7e26\u306e\u7dda\u3092\u63cf\u753b\n  }\n  for (int y = 0; y <= 400; y += 20) {\n    line(0, y, 400, y);  \/\/\u6a2a\u306e\u7dda\u3092\u63cf\u753b\n  }\n \n  fill(r, g, b, 127);  \/\/\u534a\u900f\u660e\u306e\u8d64\n  \/\/4\u89d2\u5f62\u3092\u57fa\u6e96\u70b9\u304b\u3089100\u30d4\u30af\u30bb\u30ebx\u8ef8\u65b9\u5411\u306b\u79fb\u52d5\u3057\u3066\u63cf\u753b\n  rect(100, 0, 40, 40);\n \n  popMatrix(); \/\/\u524d\u306e\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059\n}<\/code><\/pre>\n\n\n\n
4.1.7\u3000\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n\n\n
\u89d2\u5ea6\u3092draw()\u95a2\u6570\u306e\u4e2d\u3067\u5909\u66f4\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__04_01\"<\/figure>\n\n\n\n
\u56f34.1-l<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-k<\/div>\n\n\n\n
int angle = 0;  \/\/\u89d2\u5ea6\u306e\u521d\u671f\u5024\u306f0\n\nvoid setup() {\n  size(500, 500);\n  rectMode(CENTER);\n  noFill();\n}\n\nvoid draw() {\n  background(255);\n\n  translate(width\/2, height\/2);  \/\/\u5ea7\u6a19\u7cfb\u3092\u753b\u9762\u4e2d\u592e\u306b\u79fb\u52d5\n\n  pushMatrix(); \/\/\u73fe\u5728\u306e\u5ea7\u6a19\u7cfb\u3092\u4fdd\u5b58\n  rotate(radians(angle));  \/\/\u5ea7\u6a19\u7cfb\u3092\u56de\u8ee2\n  stroke(200);\n\n  \/\/\u5ea7\u6a19\u7cfb\u306e\u78ba\u8a8d\u7528\u306b\u30b0\u30ec\u30fc\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u4f5c\u6210\n  for (int x = 0; x <= width; x += 10)\n    line(x, 0, x, height);\n  for (int y = 0; y <= height; y += 10)\n    line(0, y, width, y);\n\n  stroke(0);\n  \/\/4\u89d2\u5f62\u3092\u57fa\u6e96\u70b9\u304b\u3089100\u30d4\u30af\u30bb\u30ebx\u8ef8\u65b9\u5411\u306b\u79fb\u52d5\u3057\u3066\u63cf\u753b\n  rect(100, 0, 40, 40);\n  \n  popMatrix(); \/\/\u524d\u306e\u5ea7\u6a19\u7cfb\u3092\u547c\u3073\u51fa\u3059\n\n  \/\/angle\u3092\u52a0\u7b97\u3002360\u5ea6\u306b\u306a\u3063\u305f\u30890\u5ea6\u306b\u623b\u3059\n  angle ++;\n  if (angle >= 360) angle = 0;\n}<\/code><\/pre>\n\n\n\n
4.1.8 \u8907\u88fd\u3057\u306a\u304c\u3089\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n\n\n
\u3055\u3089\u306b\u3001for\u6587\u3092\u4f7f\u3063\u3066\u8907\u88fd\u3057\u306a\u304c\u3089\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\"7_10_15__04_02\"<\/figure>\n\n\n\n
\u56f34.1-m<\/div>\n\n\n\n
\u30ea\u30b9\u30c84.1-l<\/div>\n\n\n\n
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\u30af\u30a4\u30ba2<\/a>
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