{"id":1247,"date":"2011-04-13T09:58:36","date_gmt":"2011-04-13T01:58:36","guid":{"rendered":"http:\/\/www.ccttours.com\/blog\/?p=1247"},"modified":"2011-04-13T09:58:36","modified_gmt":"2011-04-13T01:58:36","slug":"sc%ef%bc%9a%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%8c%e4%bc%98%e5%85%88%e7%ba%a7%ef%bc%8c%e5%bc%95%e6%95%b0%ef%bc%8c%e8%a1%a8%e8%be%be%e5%bc%8f%e5%92%8c%e7%94%a8%e6%88%b7%e8%87%aa%e5%ae%9a%e4%b9%89%e5%87%bd","status":"publish","type":"post","link":"https:\/\/learn.travelchinawith.me\/?p=1247","title":{"rendered":"SC\uff1a\u8fd0\u7b97\u7b26\uff0c\u4f18\u5148\u7ea7\uff0c\u5f15\u6570\uff0c\u8868\u8fbe\u5f0f\u548c\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570"},"content":{"rendered":"

\u4e4b\u524d\u7684\u90e8\u5206\u5904\u7406\u5408\u6210\u3002\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4f7f\u7528\u4e4b\u524d\u7ae0\u8282\u7684\u5408\u6210\u5668\u5b9a\u4e49\uff0c\u6216\u5916\u90e8MIDI\u4e50\u5668\uff0c\u7528SC\u6784\u5efa\u7ec4\u7ec7\u4e8b\u4ef6\u7cfb\u7edf\u3002
\n<\/p>\n

\u8fd0\u7b97\u7b26\uff0c\u4f18\u5148\u7ea7<\/h3>\n

\u4e0b\u4f8b\u7ed3\u5408\u4e86\u6570\u5b57\u53ca+, \/, -, \u548c * \u7b49\u8fd0\u7b97\u7b26\u3002\u5206\u522b\u8bc4\u4f30\u6bcf\u884c\u5427\u3002<\/p>\n

19.1. \u8fd0\u7b97\u7b26 (+, \/, -, *)<\/strong><\/p>\n

1 + 4<\/pre>\n
5\/4<\/pre>\n
8*9-5<\/pre>\n
9-5*8<\/pre>\n
9-(5*8)<\/pre>\n
\u6700\u540e\u4e09\u4e2a\u8868\u8fbe\u5f0f\u770b\u8d77\u6765\u5f88\u76f8\u4f3c\uff0c\u4f46\u7ed3\u679c\u5374\u4e0d\u540c\u3002\u7b2c\u4e09\u4e2a\u662f8*9\uff0c\u7136\u540e-5=67\uff0c\u7b2c\u56db\u4e2a\u662f9-5\u7136\u540e*8=32\u3002\u533a\u522b\u662f\u4f18\u5148\u7ea7\u3002SC\u4e2d\u7684\u4f18\u5148\u7ea7\u5f88\u7b80\u5355\uff08\u4f46\u4e0e\u4f60\u5b66\u6821\u91cc\u5b66\u7684\u4e0d\u540c\uff09\uff1a\u5305\u56f4\u4f18\u5148\uff0c\u4ece\u5de6\u81f3\u53f3\u3002\u7b2c\u4e09\u4e2a\u8868\u8fbe\u5f0f\u4e2d\u7531\u4e8e8*9\u5148\u51fa\u73b0\uff0c\u4e8e\u662f\u5b83\u5728-5\u524d\u88ab\u8ba1\u7b97\u3002\u7b2c\u56db\u4e2a\u8868\u8fbe\u5f0f\u4e2d\uff0c9-5\u5148\u88ab\u8ba1\u7b97\uff0c\u7136\u540e\u5b83\u7684\u7ed3\u679c\u88ab\u4e58\u4ee58\u3002\u6700\u540e\u4e00\u4f8b\u8868\u8ff0\u4e86\u62ec\u53f7\u5982\u4f55\u6539\u53d8\u4f18\u5148\u7ea7\u3002\u9996\u5148\u7b975*8\uff0c\u56e0\u4e3a\u5b83\u4f4d\u4e8e\u62ec\u53f7\u5185\uff0c\u7136\u540e9\u518d\u51cf\u5b83\u7684\u7ed3\u679c\u3002<\/p>\n
\u4f60\u80fd\u5728\u8fd0\u884c\u4e0b\u8fb9\u6bcf\u884c\u524d\u9884\u8ba1\u7ed3\u679c\u5417\uff1f<\/p>\n
19.2. \u66f4\u591a\u8fd0\u7b97\u7b26<\/strong><\/p>\n
1 + 2 \/ 4 * 6<\/pre>\n
2 \/ 4 + 2 * 6<\/pre>\n
(2 * 6) - 5<\/pre>\n
2 * (6 - 5)<\/pre>\n
\u4ee5\u4e0b\u662f\u53e6\u5916\u4e00\u4e9b\u4e8c\u8fdb\u5236\u8fd0\u7b97\u7b26\u3002\u8fd0\u884c\u6bcf\u884c\u7136\u540e\u770bSC\u8fd4\u56de\u4ec0\u4e48\uff1a> \u5927\u4e8e\uff0c< \u5c0f\u4e8e\uff0c== \u7b49\u4e8e\u3002% \u6a21\u3002\n\n19.3. \u4e8c\u8fdb\u5236\u8fd0\u7b97\u7b26 (>, <, ==, %)<\/strong><\/p>\n
10 > 5<\/pre>\n
5 < 1<\/pre>\n
12 == (6*2)<\/pre>\n
106%30<\/pre>\n
> \u548c < \u7b26\u53f7\u8fd4\u56de\uff1a\u771f(true)\u548c\u5047(false)\u3002SC\u77e5\u905310\u5927\u4e8e5\uff08\u56e0\u6b64\u4e3a\u771f\uff09\u4ee5\u53ca5\u4e0d\u6bd41\u5c0f\uff08\u5047\uff09\u3002\u6211\u4eec\u5c06\u628a\u8fd9\u4e00\u903b\u8f91\u7528\u4e8e\u540e\u8fb9\u7684\u7ae0\u8282\u3002\n\n\u6a21(%)\u662f\u975e\u5e38\u6709\u7528\u7684\u8fd0\u7b97\u7b26\uff0c\u5b83\u8fd4\u56de\u7b2c\u4e00\u4e2a\u6570\u5b57\u5904\u4ee5\u7b2c\u4e8c\u4e2a\u6570\u5b57\u4e4b\u540e\u6700\u5c0f\u7684\u4f59\u6570\u3002\u6bd4\u5982\u8bf4\uff0c43%10 \u5c06\u8fd4\u56de3\uff0c12946%10 \u662f6\u3002\u4e00\u4e2a\u666e\u904d\u7684\u97f3\u4e50\u5e94\u7528\u662f\u6a2112\uff0c\u5b83\u5c06\u6570\u5b57\u51cf\u81f312\u4e00\u4e0b\uff0c\u6216\u4e00\u4e2a\u516b\u5ea6\u3002\n\n\u4f60\u80fd\u9884\u89c1\u8fd9\u4e9b\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\u5417\uff1f\n\n19.4. \u9884\u77e5<\/strong><\/p>\n
(8+27)%6<\/pre>\n
((22 + 61) * 10 )%5<\/pre>\n
\u5168\u90e8\u4f8b\u5b50\u4e2d\u4f7f\u7528\u7684\u90fd\u662f\u6574\u6570\u3002\u5c0f\u6570\u88ab\u79f0\u4e3a\u6d6e\u70b9\uff08floating-point\uff09\u503c\u3002\u5728SC\u4e2d\uff0c\u8868\u8ff0\u6574\u6570\u53ef\u4ee5\u76f4\u63a5\u5199\u5bf9\u5e94\u7684\u6570\u5b57 (7, 142, 3452)\u3002\u6d6e\u70b9\u503c\u5fc5\u987b\u5728\u5c0f\u6570\u70b9\u4e24\u8fb9\u90fd\u6709\u6570\u5b57\uff0c\u5373\u4f7f\u662f\u5c0f\u4e8e1\u7684\u503c\uff1a5.142, 1.23, 456.928, 0.0001, 0.5 (\u4e0d\u662f .0001 \u6216 .5)<\/p>\n
\u6d88\u606f\uff0c\u5f15\u6570\uff0c\u63a5\u6536\u5668<\/h3>\n
\u4f60\u5e94\u8be5\u80fd\u81ea\u5982\u5730\u8fd0\u7528\u6d88\u606f\uff08message\uff09\u3001\u5f15\u6570\uff08argument\uff09\u548c\u63a5\u6536\u5668\uff08receiver\uff09\u3002\u8bb0\u4f4f\u6570\u5b57\u4e5f\u53ef\u4ee5\u662f\u5bf9\u8c61\u3002\u6d88\u606f\u5e38\u6709\u4e00\u4e2a\u6709\u610f\u4e49\u7684\u540d\u5b57\uff0c\u6bd4\u5982sum\u6216abs\uff0c\u5e76\u4f34\u968f\u7740\u88c5\u5165\u88ab\u9017\u53f7\u5206\u9694\u5f00\u7684\u5f15\u6570\u7684\u62ec\u53f7\u3002\u63a5\u4e0b\u6765\u7684\u4fbf\u662f\u7535\u8111\u97f3\u4e50\u5e38\u7528\u7684\u5178\u578b\u7684\u6d88\u606f\u3002\u5728\u8fd9\u524d\u7684\u7ae0\u8282\uff0c\u6d88\u606f\u4f7f\u7528\u8bed\u6cd5Object.message<\/em>\u3002\u8fd9\u88ab\u79f0\u4e3a\u63a5\u6536\u5668\u8868\u793a\u6cd5\u3002\u5bf9\u8c61\u5c31\u662f\u63a5\u6536\u5668\u3002\u4e00\u4e2a\u4e0e\u4e4b\u76f8\u540c\u7684\u8bed\u6cd5\u5728\u4e0b\u4f8b\u4e2d\u5f15\u5165\uff0c\u6211\u4e3a\u5b83\u4f7f\u7528\u4e86\u51fd\u6570\u8868\u793a\u6cd5\uff1amessage(argument)\u3002\u5bf9\u8c61\u5728\u5f15\u6570\u5217\u8868\u4e2d\u88ab\u7f6e\u4e8e\u7b2c\u4e00\u4f4d\u30025.rrand(10)<\/em> \u53ef\u4ee5\u88ab\u8868\u8fbe\u4e3a rrand(5, 10)<\/em>\u3002\u540c\u6837\u7684\uff0cmin(10, 100)<\/em> \u53ef\u4ee5\u88ab\u8868\u8fbe\u4e3a 10.min(100)<\/em>\u3002 <\/p>\n
19.5. \u97f3\u4e50\u76f8\u5173\u7684\u6d88\u606f<\/strong> <\/p>\n
cos(34) \/\/\u8fd4\u56de\u4f59\u5f26\r\n\r\nabs(-12) \/\/\u8fd4\u56de\u7edd\u5bf9\u503c\r\n\r\nsqrt(3) \/\/\u5e73\u65b9\u6839\r\n\r\nmidicps(56) \/\/\u7ed9\u4e00\u4e2aMIDI\u6570\u5b57\uff0c\u5728\u4e00\u4e2a\u7b49\u97f3\u7a0b\u5185\u8fd4\u56de\u6bcf\u79d2\u5468\u6570 \r\n\r\ncpsmidi(345) \/\/\u7ed9\u6bcf\u79d2\u5468\u6570, \u8fd4\u56deMIDI \r\n\r\nmidiratio(7) \/\/\u7ed9\u4e00\u4e2aMIDI\u97f3\u7a0b, \u8fd4\u56de\u6bd4\u7387 \r\n\r\nratiomidi(1.25) \/\/\u7ed9\u4e00\u4e2a\u6bd4\u7387, \u8fd4\u56deMIDI\u6570\u5b57 \r\n\r\nrand(30) \/\/\u8fd4\u56de\u4e00\u4e2a0\uff5e29\u95f4\u7684\u968f\u673a\u6570 \r\n\r\nrand2(20) \/\/\u8fd4\u56de\u4e00\u4e2a-30\uff5e30\u95f4\u7684\u968f\u673a\u6570 \r\n\r\nrrand(20, 100) \/\/\u8fd4\u56de\u4e00\u4e2a20\uff5e100\u95f4\u7684\u968f\u673a\u6570 \r\n\r\n\/\/ \u63a5\u6536\u5668\u8868\u793a\u6cd5\u8303\u4f8b \r\n\r\n30.cos \/\/\u7b49\u4e8ecos(30) \r\n\r\n0.7.coin \/\/\u7b49\u4e8ecoin(0.7) \r\n\r\n20.rand \/\/\u7b49\u4e8erand(20) \r\n\r\n7.midiratio \r\n\r\n\/\/ \u4e8c\u8fdb\u5236\u51fd\u6570\u6709\u4e24\u4e2a\u5f15\u6570 \r\n\r\nmin(6, 5) \/\/\u8fd4\u56de\u4e24\u4e2a\u503c\u7684\u6700\u5c0f\u503c \r\n\r\nmax(10, 100) \/\/\u8fd4\u56de\u6700\u5927\u503c \r\n\r\nround(23.162, 0.1) \/\/rounds first argument to second argument \r\n\r\n\/\/ \u5f15\u6570\u53ef\u4ee5\u662f\u8868\u8fbe\u5f0f \r\n\r\nmin(5*6, 35) \r\n\r\nmax(34 - 10, 4) \/\/\u8fd4\u56de\u4e24\u4e2a\u503c\u7684\u6700\u5927\u503c<\/pre>\n
\u7ec3\u4e60\uff0c\u97f3\u4e50\u8ba1\u7b97\u5668<\/h3>\n
SC\u751a\u81f3\u5728\u4f60\u4e0d\u505a\u97f3\u4e50\u7684\u65f6\u5019\u4e5f\u5f88\u6709\u7528\u3002\u6211\u5e38\u53ea\u5c06\u5b83\u7528\u4f5c\u4e00\u4e2a\u97f3\u4e50\u8ba1\u7b97\u5668\uff1a\u8ba1\u7b97\u5e73\u5747\u5f8bAb\u7684\u9891\u7387\uff0c\u5e73\u5747\u5f8b5\u5ea6\u548c\u81ea\u7136\u97f3\u7a0b5\u5ea6\u95f4\u6709\u51e0\u5206\uff0c\u6216\u8005\u8bf4\u97f3\u7a0b\uff0c\u4e24\u4e2a\u9891\u7387\u95f4\u7684\u5206\u6570\uff08cent\uff09\u3002\u4e0b\u8fb9\u662f\u51e0\u4e2a\u4f8b\u5b50\u3002<\/p>\n
19.6. \u97f3\u4e50\u8ba1\u7b97\u5668<\/strong><\/p>\n
\/\/ \u5927\u97f3\u9636\u9891\u7387\r\n([0, 2, 4, 5, 7, 9, 11, 12] + 60).midicps.round(0.01)\r\n\r\n\/\/ \u5927\u97f3\u9636\u97f3\u7a0b\u7387\r\n[0, 2, 4, 5, 7, 9, 11, 12].midiratio.round(0.001)\r\n\r\n\/\/ \u4f5b\u91cc\u5409\u4e9a\u97f3\u9636\u9891\u7387\r\n([0, 1, 3, 5, 7, 8, 10, 12] + 60).midicps.round(0.01)\r\n\r\n\/\/ \u4f5b\u91cc\u5409\u4e9a\u97f3\u9636\u97f3\u7a0b\u7387\r\n[0, 1, 3, 5, 7, 8, 10, 12].midiratio.round(0.001)\r\n\r\n\/\/ \u5e73\u5747\u548c\u81ea\u7136\u7c73\u7d22\u5229\u5730\u5b89\u97f3\u9636\u6bd4\u8f83\r\n[0, 2, 3, 4, 5, 7, 9, 10, 12].midiratio.round(0.001)\r\n\r\n[1\/1, 9\/8, 6\/5, 5\/4, 4\/3, 3\/2, 8\/5, 7\/4, 2\/1].round(0.001)\r\n\r\n\/\/ \u4ee5\u5e73\u5747\u5f8b\u5206\u8868\u8ff0\u7684\u81ea\u7136\u6bd4\u7387(\u7c73\u7d22\u5229\u5730\u5b89)Just ratios (mixolydian) in equal tempered cents\r\n\/\/ (\u4ee5\u53ca\u5b83\u4eec\u76f8\u8f83\u5e73\u5747\u5f8b\u7684\u504f\u5dee)\r\n[1\/1, 9\/8, 6\/5, 5\/4, 4\/3, 3\/2, 8\/5, 7\/4, 2\/1].ratiomidi.round(0.01)\r\n\r\n\/\/ \u5012\u541112-\u97f3\u914d\u7f6e\uff08Retrograde of a 12-tone set\uff09\r\n[0, 11, 10, 1, 9, 8, 2, 3, 7, 4, 6, 5].reverse\r\n\r\n\/\/ \u53cd\u541112-\u97f3\u914d\u7f6e Inversion of a 12-tone set\r\n12 - [0, 11, 10, 1, 9, 8, 2, 3, 7, 4, 6, 5]\r\n\r\n\/\/ And of course, retrograde inversion (see where I'm heading?)\r\n(12 - [0, 11, 10, 1, 9, 8, 2, 3, 7, 4, 6, 5]).reverse\r\n\r\n\/\/ 12-\u97f3\u914d\u7f6e\u968f\u673a\u53d8\u8c03\r\n([0, 11, 10, 1, 9, 8, 2, 3, 7, 4, 6, 5] + 12.rand)%12\r\n\r\n\/\/ 12-\u97f3\u8bbe\u7f6e\u968f\u673a\u7f6e\u6362 (479,001,600\u4e4b\u5916)\r\n[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11].permute(479001600.rand) + 60<\/pre>\n
\u51fd\u6570\uff0c\u5f15\u6570\uff0c\u8303\u56f4<\/h3>\n
\u4e00\u4e2a\u51fd\u6570\u5c31\u662f\u88c5\u5165\u4e00\u5bf9\u82b1\u62ec\u53f7\u5185\u7684\u4e00\u7cfb\u5217\u8868\u8fbe\u5f0f\u3002\u5168\u90e8\u51fd\u6570\u5e38\uff08\u4f46\u4e0d\u603b\u662f\uff09\u88ab\u5206\u914d\u5230\u4e00\u4e2a\u53d8\u91cf\u3002\u4ee3\u7801\u987a\u5e8f\u88ab\u6267\u884c\uff0c\u5e76\u8fd4\u56de\u6700\u540e\u4e00\u884c\u7684\u7ed3\u679c\u3002\u5f53\u51fd\u6570\u88ab\u8c03\u7528\u6216\u5728\u7a0b\u5e8f\u7684\u4efb\u4f55\u5730\u65b9\u8fd0\u884c\uff0c\u5c31\u597d\u8c61\u6240\u6709\u7684\u4ee3\u7801\u90fd\u88ab\u66ff\u4ee3\u51fd\u6570\u63d2\u5165\u3002\u4e00\u4e2a\u51fd\u6570\u88ab\u4f7f\u7528value\u6d88\u606f\u8bc4\u4f30\u3002 <\/p>\n
\u4e00\u4e2a\u6ca1\u6709\u53d8\u91cf\u6216\u5f15\u6570\u7684\u7b80\u5355\u51fd\u6570\uff1a <\/p>\n
19.7. \u51fd\u6570 <\/strong><\/p>\n
( \r\nvar myFunc; \r\n\r\nmyFunc = {100 * 20}; \r\n\r\nmyFunc.value.postln; \r\n)<\/pre>\n
\u7b2c\u4e00\u884c\u7533\u660e\u4e86\u88ab\u7528\u4e8e\u51fd\u6570\u7684\u53d8\u91cf\u3002\u7b2c\u4e8c\u884c\u662f\u51fd\u6570\u5206\u914d\uff08\u8ba9myFunc\u7b49\u540c\u4e8e{100 * 20}\uff0c\u6216\u8005\u8bf4\u5c06\u8868\u8fbe\u5f0f100*20\u5b58\u5165myFunc\uff09\u3002\u6bcf\u4e2a\u4f60\u653e\u5165myFunc\u7684\u5730\u65b9\u4e5f\u7b49\u4e8e\u8bf4\u4f60\u653e\u5165\u4e862000\u3002<\/p>\n
\u5f15\u6570\u5c31\u50cf\u53d8\u91cf\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u5728\u51fd\u6570\u88ab\u8c03\u7528\u65f6\u4f20\u9012\u7ed9\u5b83\u3002\u5728\u5de6\u82b1\u62ec\u53f7\u4e4b\u540e\u7533\u660e\u5f15\u6570\u3002\u63a5\u4e0b\u7533\u660e\u53d8\u91cf\uff0c\u6765\u5982\u679c\u8981\u4f7f\u7528\u5b83\u4eec\u7684\u8bdd\u3002<\/p>\n
\u4e0b\u8fb9\u662f\u5e26\u5f15\u6570\u7684\u51fd\u6570\u3002 <\/p>\n
19.8. \u6709\u5f15\u6570\u7684\u51fd\u6570<\/strong> <\/p>\n
( \r\nvar func; \r\nfunc = { arg a, b; \r\n   var r; \r\n   r = (b * 20)%a; \r\n   r.postln; \r\n   }; \r\nfunc.value(15, 5); \r\n)<\/pre>\n
\u5c06\u4e00\u4e2a\u5305\u542b\u4e00\u4e2a\u5143\u7d20\u96c6\u5408\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u4e00\u4e2a\u51fd\u6570\u5e38\u5e38\u662f\u5f88\u6709\u7528\u7684\uff0c\u6bd4\u5982\u8bf4\uff0c\u5f53\u51fd\u6570\u4e2d\u4f60\u60f3\u4f7f\u7528\u7684\u5143\u7d20\u6570\u91cf\u503e\u5411\u4e8e\u6539\u53d8\u7684\u65f6\u5019\u3002\u8003\u8651\u4e0b\u4f8b\uff0c\u6c42\u4e09\u4e2a\u6570\u7684\u603b\u5408\u3002\u5982\u679c\u4f60\u60f3\u6c42\u548c\u4e00\u6b21\uff0c\u5341\u6b21\uff0c\u63a5\u4e0b\u6765\u4e24\u6b21\u6216\u516d\u6b21\uff0c\u600e\u4e48\u529e\uff1f\u4f7f\u7528\u5f15\u6570\uff0c\u4f60\u53ef\u80fd\u4e0d\u5f97\u4e0d\u6bcf\u6b21\u6539\u53d8\u5f15\u6570\u7684\u6570\u5b57\uff0c\u6216\u5199\u4e00\u4e2a\u65b0\u7684\u51fd\u6570\u3002\u4e00\u4e2a\u89e3\u51b3\u65b9\u5f0f\u662f\u4f20\u9012\u4e00\u4e2a\u6570\u7ec4\u4f5c\u4e3a\u5f15\u6570\u3002\u8981\u8fd9\u4e48\u505a\uff0c\u4f60\u5fc5\u987b\u9996\u5148\u7533\u660e\u4e00\u4e2a\u6570\u7ec4\u53d8\u91cf\uff0c\u5728\u5b83\u4e4b\u524d\u5199\u4e09\u4e2a\u53e5\u53f7\uff0c\u5c31\u50cf\u6700\u540e\u90a3\u4e2a\u4f8b\u5b50\u4e2d\u7684\u4e00\u6837\u3002 <\/p>\n
19.9. \u7528\u6570\u7ec4\u5f15\u6570\u7684\u51fd\u6570 <\/strong><\/p>\n
( \r\nvar func; \r\nfunc = { arg a = 1, b = 2, c = 4; \r\n   [a, b, c].sum; \r\n   }; \r\nfunc.value(15, 5, 100); \r\n)<\/pre>\n
( \r\nvar func; \r\nfunc = { arg ... a; \r\n   a.postln; \r\n   a.sum.postln; \r\n   [a.sum, 1.0.rand.sum].sum \r\n   }; \r\nfunc.value(15, 5, 100); \r\nfunc.value(15, 5, 100, 3, 78, 18, 367); \r\nfunc.value(1, 2); \r\n)<\/pre>\n
\u7ed3\u5408\u6240\u6709\u8bed\u6cd5 <\/p>\n
( \r\nvar func; \r\nfunc = { arg a = 0, b = 0 ... c; \r\n   [a, b, c].postln; \r\n   c.sum.postln; \r\n   [c.sum, 3.0.rand.postln].sum.postln; \r\n   (a\/b*c).postln; \r\n   }; \r\nfunc.value(15, 5, 100, 45); \r\nfunc.value(15, 5, 100, 3, 99, 754, 78, 18, 367); \r\nfunc.value(1, 2, 3, 4, 5); \r\n)<\/pre>\n
\u8303\u56f4\uff08scope\uff09\u63cf\u8ff0\u4e00\u4e2a\u53d8\u91cf\u6216\u5f15\u6570\u7684\u6709\u6548\u8303\u56f4\u3002\u4e00\u4e2a\u53d8\u91cf\u4ec5\u80fd\u7533\u660e\u5b83\u7684\u51fd\u6570\u5185\u90e8\u4f7f\u7528\u3002\u5728\u90a3\u4e2a\u51fd\u6570\u5185\u7684\u51fd\u6570\u53ef\u4ee5\u5229\u7528\u5916\u90e8\u53d8\u91cf\u3002\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\uff0c\u7528\u6ce2\u6d6a\u53f7\u7533\u660e\uff0c\u5728\u4efb\u4f55\u5730\u65b9\u90fd\u53ef\u7528\u3002 <\/p>\n
19.10. \u6709\u5f15\u6570\u548c\u53d8\u91cf\u7684\u51fd\u6570<\/strong> <\/p>\n
var func, outside = 60; \r\n~myGlobal = 22; \r\nfunc = { arg first = 5, second = 9; \r\n   var inside = 10; \r\n   inside = (first * 11)%second; \r\n   [first, second, inside, outside, ~myGlobal].postln; \/\/ \u5168\u90e8\u90fd\u884c\u5f97\u901a \r\n   (outside\/inside).postln; \/\/\u884c\u5f97\u901a \r\n   }; \r\n\/\/inside.postln; \/\/ \u53cd\u6ce8\u91ca\u8fd9\u4e00\u884c\uff0c\u884c\u4e0d\u901a \r\nfunc.value(15, 6); \/\/ \u5f15\u6570\u88ab\u4f20\u9012\u5165\u51fd\u6570<\/pre>\n
\u4f60\u80fd\u5728\u8fd0\u884c\u4e0b\u8fb9\u4ee3\u7801\u4e4b\u524d\u9884\u6d4b\u5230myFunc\u8c03\u7528\u7684\u503c\u5417\uff1f\u7b2c\u4e00\u4f8b\u6ca1\u6709\u5f15\u6570\u4f20\u9012\u5165\u51fd\u6570\u5e76\u5c06\u4f7f\u7528\u9ed8\u8ba4\uff0810\u548c2\uff09\u3002\u63a5\u4e0b\u6765\u7684\u4e24\u4e2a\u4f7f\u7528\u9ed8\u8ba4\u3002 <\/p>\n
19.11. \u51fd\u6570\u8c03\u7528<\/strong> <\/p>\n
(\/\/\u884c1 \r\nvar myFunc; \r\nmyFunc = { arg a = 10, b = 2; \r\n   b = (b * 100)%a; \r\n   b.postln; \r\n   }; \r\nmyFunc.value; \/\/\u884c7 \r\nmyFunc.value(15); \/\/\u884c8 \r\nmyFunc.value(11, 30); \/\/\u884c9 \r\n)<\/pre>\n
\u4f60\u4e5f\u53ef\u4ee5\u4e3a\u4f60\u81ea\u5df1\u7684\u51fd\u6570\u4f7f\u7528\u5173\u952e\u5b57\u3002 <\/p>\n
19.12. \u5173\u952e\u5b57<\/strong> <\/p>\n
( \r\nvar myFunc; \r\nmyFunc = { arg firstValue = 10, secondValue = 2; \r\n   firstValue = (firstValue * 100)%secondValue; \r\n   firstValue.postln; \r\n   }; \r\nmyFunc.value; \r\nmyFunc.value(firstValue: 15); \r\nmyFunc.value(firstValue: 30, secondValue: 11); \r\nmyFunc.value(secondValue: 30, firstValue: 11); \r\nmyFunc.value(secondValue: 23); \r\n)<\/pre>\n
\u5728\u4e4b\u524d\u7684\u4f8b\u5b50\u4e2d\uff0c\u6700\u540e\u4e00\u884c\u5217\u5370\u6700\u540e\u7ed3\u679c\u3002\u4f46\u5728\u7edd\u5927\u591a\u6570\u51fd\u6570\u4e2d\uff0c\u503c\u4f1a\u56de\u5230\u51fd\u6570\u88ab\u8c03\u7528\u7684\u5730\u65b9\u3002\u51fd\u6570\u7684\u6700\u540e\u4e00\u884c\u88ab\u8fd4\u56de\u3002\u8fd9\u662f\u4e00\u4e2a\u6709\u4e00\u70b9\u70b9\u97f3\u4e50\u611f\u89c9\u7684\u4f8b\u5b50\u3002 <\/p>\n
19.13. \u8fd4\u56de<\/strong> <\/p>\n
( \r\nvar octaveAndScale; \r\noctaveAndScale = { arg oct = 4, scale = 0; \r\n   var scales, choice; \r\n   oct = (oct + 1)*12; \/\/\u5c06\"4\" (C4)\u8f6c\u6362\u5230MIDI\u516b\u5ea6(60) \r\n   scales = [ \r\n      [0, 2, 4, 5, 7, 9, 11], \/\/\u5927\u8c03 \r\n      [0, 2, 3, 5, 6, 8, 9, 11], \/\/\u516b\u97f3 \r\n      [0, 2, 4, 6, 8, 10] \/\/\u5168\u97f3\r\n   ]; \r\n   scale = scales.at(scale); \/\/more on the \"at\" message below \r\n   choice = scale.choose; \/\/\u9009\u4e00\u4e2a\u97f3\u9ad8 \r\n   choice = choice + oct; \/\/\u589e\u52a0\u516b\u5ea6 \r\n   choice \/\/\u8fd4\u56de\u6700\u540e\u7684\u7ed3\u679c \r\n   }; \r\n\r\noctaveAndScale.value; \/\/choose from major scale, C4 octave \r\noctaveAndScale.value(3); \/\/choose from C3 octave, major scale \r\noctaveAndScale.value(7, 2); \/\/choose from C7 octave, whole tone scale \r\noctaveAndScale.value(scale: 1); \/\/choose from C4 octave, octatonic scale \r\n)<\/pre>\n
\u4ec0\u4e48\u65f6\u5019\u4f60\u8be5\u4f7f\u7528\u4e00\u4e2a\u51fd\u6570\uff1f\u6211\u4eec\u5728\u76ee\u524d\u51e0\u4e4e\u6240\u6709\u4f8b\u5b50\u4e2d\u90fd\u4f7f\u7528\u4e86\u5b83\u4eec\u3002\u50cfmax\uff0cchoose\uff0cmidicps<\/em>\u8fd9\u6837\u7684\u4fe1\u606f\uff0c\u662f\u88abSC\u4f5c\u8005\u653e\u5230\u4e00\u8d77\u7684\u51fd\u6570\uff08\u4ee5\u63a5\u6536\u5668\u8868\u793a\u6cd5\uff09\u3002\u5728\u4f55\u65f6\u8c10\u4f60\u81ea\u5df1\u7684\u51fd\u6570\uff1f\u4fbf\u5229\u6216\u6e05\u695a\uff0c\u6bd4\u65b9\u8bf4\u5f53\u4f60\u4e00\u6b21\u53c8\u4e00\u6b21\u4f7f\u7528\u4f60\u81ea\u5df1\u5f00\u53d1\u7684\u4e00\u6bb5\u4ee3\u7801\u65f6\u3002\u76f8\u5bf9\u5728\u6bcf\u4e2a\u5730\u65b9\u91cd\u590d\u8fd9\u4e9b\u4ee3\u7801\uff0c\u5199\u548c\u4f7f\u7528\u4e00\u4e2a\u4f60\u81ea\u5df1\u7684\u51fd\u6570\u5c06\u4f1a\u66f4\u6e05\u6670\u9ad8\u6548\u3002\u53e6\u4e00\u60c5\u51b5\u662f\u5f53\u6ca1\u6709\u73b0\u5b58\u7684\u6d88\u606f\u6216\u51fd\u6570\u4f46\u4f60\u5374\u53c8\u6b63\u597d\u9700\u8981\u4ed6\u4eec\u7684\u65f6\u5019\uff0c\u56e0\u6b64\u4f60\u53ea\u80fd\u81ea\u5df1\u53bb\u5199\u3002<\/p>\n
\u7ec3\u4e60\uff0c\u95ea\u70c1<\/h3>\n
\u5728\u8fd9\u4e2apatch\u91cc\uff0c\u51fd\u6570\u8fd4\u56de\u4e0b\u4e00\u4e2a\u5c06\u88ab\u7528\u4e8e\u95ea\u70c1\uff08flashing\uff09\u4e50\u5668\u91cc\u7684\u9891\u7387\u3002\u6bcf\u4e2a\u65b0\u7684\u97f3\u90fd\u5c06\u57fa\u4e8e\u4e4b\u524d\u7684\u97f3\u6765\u8ba1\u7b97\uff0c\u56e0\u4e3a\u5b83\u4f7f\u7528\u7eaf\u5f8b\uff0c\u5c31\u50cf\u6211\u4eec\u5728\u4e4b\u524d\u7ae0\u8282\u91cc\u505a\u7684\u90a3\u6837\u3002\u6211\u5c06\u5217\u5370\u5b9e\u9645\u7684\u97f3\uff0c\u4ee5\u53ca\u5728\u5e73\u5747\u5f8b\u4e2d\u6700\u8fd1\u7684\u7b49\u4ef7\u7269\u3002<\/p>\n
\u5b83\u4ece\u4e4b\u524d\u7684\u4e00\u4e2apatch\u5f00\u59cb\uff0c\u53ea\u4e0d\u8fc7\u7528\u5f15\u6570\u548cSynthDef\u66ff\u4ee3\u4e86\u4e00\u4e9b\u4e1c\u897f\uff1afundamental, decay, \u548c filter\u3002\u8fd9\u4e2a\u4e50\u5668\u88abtask\u548cloop\u5b8c\u7f8e\u6f14\u594f\u3002\u5728\u8fdb\u5165\u5faa\u73af\u524d\uff0c\u6211\u5b9a\u4e49\u4e86freqFunc\uff0c\u5b83\u57fa\u4e8e\u4e0a\u4e00\u4e2a\u97f3\u548c\u65b0\u7684\u7eaf\u97f3\u7a0b\u7387\u9009\u53d6\u4e00\u4e2a\u65b0\u7684\u97f3\u3002\u8fd9\u88ab\u79f0\u4e3a\u81ea\u7531\u7eaf\u5f8b\uff08\u5728\u5b9e\u4f53\u4e50\u5668\u4e0a\u5f88\u96be\u5b9e\u73b0\uff0c\u5728\u7535\u8111\u4e0a\u5374\u5f88\u5bb9\u6613\uff09\u3002\u6211\u6dfb\u52a0\u4e86\u4e00\u4e2awrap\u4ee5\u4f7f\u9891\u7387\u4fdd\u6301\u5728\u4e00\u4e2a\u7279\u5b9a\u8303\u56f4\u5185\u3002nextEvent\u4e0d\u4ec5\u63a7\u5236\u7740\u4e0b\u4e00\u4e2a\u4e8b\u4ef6\u5c06\u662f\u4ec0\u4e48\uff0c\u800c\u4e14\u90a3\u4e2a\u503c\u8fd8\u88ab\u4f20\u9012\u5165Flash\u4e50\u5668\u4f5c\u4e3a\u8870\u51cf\uff0c\u4ee5\u786e\u4fdd\u7b2c\u4e00\u4e2a\u58f0\u97f3\u5728\u7b2c\u4e8c\u4e2a\u58f0\u97f3\u54cd\u8d77\u540e\u8fc5\u901f\u8870\u51cf\u3002\u5728\u8fd9\u4e2apatch\u5185\uff0c\u6211\u4e0d\u6562\u786e\u4fdd\u6ee4\u6ce2\u5668\u4f1a\u4ee5\u5b83\u5e94\u8be5\u662f\u7684\u5de5\u4f5c\u65b9\u5f0f\u5de5\u4f5c\u3002<\/p>\n
19.14. \u51fd\u6570\u7ec3\u4e60, free, just tempered flashing<\/strong><\/p>\n
(\r\n\/\/\u5148\u8fd0\u884c\u8fd9\u4e2a\r\nSynthDef(\"Flash\",\r\n{\r\narg fund = 400, decay = 4, filter = 1;\r\nvar out, harm;\r\n\r\nout = Mix.ar(\r\n   Array.fill(7,\r\n   {\r\n      arg counter;\r\n      var partial;\r\n      partial = counter + 1;\r\n      SinOsc.ar(fund*partial) *\r\n         EnvGen.kr(Env.linen(0, 0, decay + 2),\r\n         levelScale: 1\/(partial*filter)\r\n         ) * max(0, LFNoise1.kr(rrand(5.0, 12.0)))\r\n   })\r\n   )*0.3; \/\/\u6574\u4f53\u97f3\u91cf\r\nout = Pan2.ar(out, Rand(-1.0, 1.0));\r\nDetectSilence.ar(out, doneAction:2);\r\nOut.ar(0, out)\r\n}\r\n).play(s);\r\n)\r\n\r\n(\r\n\/\/\u7136\u540e\u8fd9\u4e2a\r\nr = Task({\r\nvar freqFunc, pitch = 440, nextEvent;\r\n\r\nfreqFunc = {arg previousPitch;\r\n   var nextPitch, nextInterval;\r\n   nextInterval = [3\/2, 2\/3, 4\/3, 3\/4, 5\/4, 4\/5, 6\/5, 5\/6].choose;\r\n   nextPitch = (previousPitch*nextInterval).wrap(100, 1000);\r\n   nextPitch.round(0.01).post; \" != \".post;\r\n   nextPitch.cpsmidi.round(1).midicps.round(0.01).postln;\r\n   nextPitch\r\n};\r\n\r\n{\r\n   nextEvent = [0.5, 0.25, 5, 4, 1].choose;\r\n   pitch = freqFunc.value(pitch);\r\n   Synth(\"Flash\",\r\n      [\\fund, pitch, \\decay, nextEvent, \\filter, rrand(1.0, 4.0)]);\r\n   \/\/\u9009\u62e9\u4e00\u4e2a\u4e0b\u4e00\u4e8b\u4ef6\u524d\u7684\u7b49\u5f85\u65f6\u95f4\r\n   nextEvent.wait;\r\n}.loop;\r\n}).play\r\n)<\/pre>\n
\u7ec3\u4e60\uff1a\u51fd\u6570\u8303\u4f8b<\/h3>\n
19.15. \u97f3\u51fd\u6570<\/strong><\/p>\n
var freqFunc, pitches, pitch = 440, count, midiNote, nextEvent;\r\npitches = [60, 61, 62, 63, 64]; \/\/\u7533\u660e\u4e00\u4e2a\u97f3\u7684\u6570\u7ec4\r\nfreqFunc = {\r\n   midiNote = pitches.choose; \/\/\u4ece\u6570\u7ec4\u9009\u53d6\u4e00\u4e2a\u97f3\r\n   midiNote.midicps; \/\/ \u8fd4\u56de\u90a3\u4e2a\u97f3\u7684cps\r\n};\r\n\r\nvar freqFunc, pitches, pitch = 440, count, midiNote, nextEvent;\r\npitches = [60, 62, 64, 67, 69, 72, 74, 76]; \/\/\u7533\u660e\u4e00\u4e2a\u97f3\u7684\u6570\u7ec4\r\ncount = 0; \/\/\u521d\u59cb\u5316\u8ba1\u6570\r\nfreqFunc = {\r\n   midiNote = pitches.wrapAt(count); \/\/ \u5305\u88f9\u7684\u8ba1\u6570\u76ee\u5f55\r\n   if(count%30 == 29, \/\/\u6bcf\u4e5d\u6b21\r\n      {pitches = pitches.scramble} \/\/reset \"pitches\" to a scrambled\r\n                   \/\/verion of itself\r\n   );\r\n   count = count + 1; \/\/\u9012\u589e\r\n   midiNote.midicps; \/\/\u8fd4\u56decps\r\n};\r\n\r\n\/\/ \u6211\u7684\u6700\u7231:\r\nvar freqFunc, pitches, pitch = 440, count, midiNote, nextEvent;\r\npitches = [60, 62, 64, 67, 69, 72, 74, 76].scramble;\r\nfreqFunc = {\r\n   midiNote = pitches.wrapAt(count); \/\/ \u5305\u88f9\u8ba1\u6570\u76ee\u5f55\r\n   if(count%10 == 9, \/\/every tenth time\r\n      {pitches.put(5.rand, (rrand(60, 76)))}\/\/put a new pitch between\r\n                         \/\/65 and 75 into the array pitches\r\n                         \/\/at a random index\r\n   );\r\n   count = count + 1; \/\/\u9012\u589e\r\n   midiNote.midicps; \/\/\u8fd4\u56decps\r\n};<\/pre>\n","protected":false},"excerpt":{"rendered":"
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