{"id":614,"date":"2009-11-03T23:48:13","date_gmt":"2009-11-03T15:48:13","guid":{"rendered":"http:\/\/test999.eblhost.com\/blog\/?p=614"},"modified":"2009-11-04T00:28:46","modified_gmt":"2009-11-03T16:28:46","slug":"processing%ef%bc%9a%e6%95%b0%e5%ad%a6%ef%bc%88%e4%b8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/learn.travelchinawith.me\/?p=614","title":{"rendered":"Processing\uff1a\u6570\u5b66\uff08\u4e0b\uff09"},"content":{"rendered":"

14. \u6211\u4eec\u76f4\u89c9\u4e0a\u4e60\u60ef\u4ee5\u5ea6\u6570\u6765\u8003\u8651\u89d2\u3002\u4f46Processing\u5374\u8981\u6c42\u6211\u4eec\u7528\u5f27\u5ea6\u6765\u5236\u4f5c\u4e00\u4e2a\u89d2\u3002<\/p>\n

\"\u5f27\u5ea6\"<\/a>
\u5f27\u5ea6<\/figcaption><\/figure>\n

\u89d2\u5ea6\u3001\u5f27\u5ea6\u8f6c\u6362\u516c\u5f0f\uff1a
\n \u5f27\u5ea6 \uff1d 2 * PI * (\u89d2\u5ea6\/360)<\/span>
\n\u5e78\u8fd0\u7684\u662f\uff0c\u82e5\u6211\u4eec\u4e60\u60ef\u4e86\u4ee5\u89d2\u5ea6\u6765\u8003\u8651\u89d2\u800c\u53c8\u5fc5\u987b\u4ee5\u5f27\u5ea6\u5199\u4ee3\u7801\uff0cProcessing\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86radians()<\/span><\/em>\u51fd\u6570\u81ea\u52a8\u5c06\u89d2\u5ea6\u503c\u8f6c\u5316\u4e3a\u5f27\u5ea6\u503c\u3002\u53e6\u5916\uff0c\u5e38\u6570PI\u548cTWO_PI\u4e5f\u53ef\u4ee5\u73b0\u6210\u4f7f\u7528\uff08\u5206\u522b\u7b49\u4e8e180 \u00b0 \u548c 360 \u00b0 \uff09\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c06\u4f7f\u5f62\u72b6\u65cb\u8f6c60 \u00b0 \u3002
\nfloat angle = radians(60);
\nrotate(angle);<\/dirtycode><\/p>\n

15. \u590d\u4e60\u4e00\u4e0b\uff0c\u6570\u5b66\u5e38\u6570PI (\u6216 \u03c0 )\u662f\u5706\u5468\u4e0e\u5176\u76f4\u5f84\u7684\u6bd4\u7387\uff08\u56f4\u7ed5\u5706\u5468\u7684\u8ddd\u79bb\uff09\u3002\u5b83\u7684\u503c\u7ea6\u7b49\u4e8e3.14159\u3002<\/p>\n

16. Sohcahtoa\uff0c\u8c8c\u4f3c\u65e0\u610f\u4e49\u800c\u4e14\u5947\u602a\u7684\u8bcd\uff0c\u786e\u5b9e\u5de8\u5927\u90e8\u5206\u8ba1\u7b97\u673a\u56fe\u5f62\u5de5\u4f5c\u7684\u57fa\u7840\u3002\u5f53\u4f60\u8981\u8ba1\u7b97\u4e00\u4e2a\u89d2\uff0c\u51b3\u5b9a\u70b9\u95f4\u8ddd\uff0c\u9664\u4e86\u5706\u5f62\u6216\u5f27\u5f62\u7b49\u7b49\u7b49\u7b49\u7684\u65f6\u5019\uff0c\u4f60\u4f1a\u53d1\u73b0\u4e09\u89d2\u5b66\u7684\u91cd\u8981\u6027\u3002sohcahtoa\u662f\u8bb0\u5fc6\u4e09\u89d2\u5b66\u57fa\u7840\uff0c\u6b63\u5f26\u3001\u4f59\u5f26\u548c\u6b63\u5207\u7684\u52a9\u8bb0\u7b26\u3002
\n \u25ce soh : sine \uff1d \u5bf9\u8fb9\/\u659c\u8fb9
\n\u25ce cah : cosine \uff1d \u90bb\u8fb9\/\u659c\u8fb9
\n\u25ce toa : tangent \uff1d \u5bf9\u8fb9\/\u90bb\u8fb9<\/span><\/p>\n

<\/span><\/p>\n

\"Sohcahtoa\"<\/a>
Sohcahtoa<\/figcaption><\/figure>\n

17. \u6211\u4eec\u8981\u5728Processing\u5185\u7ed8\u5236\u56fe\u5f62\uff0c\u9700\u8981\u7ed9\u51fa\u5176x\uff0cy\u5750\u6807\u503c\uff0c\u8fd9\u79cd\u5750\u6807\u79f0\u4e3a\u7b1b\u5361\u5c14\u5750\u6807\u3002\u53e6\u5916\u4e00\u79cd\u6709\u7528\u7684\u5750\u6807\u79f0\u4e3a\u6781\u5750\u6807\uff0c\u4ee5\u7a7a\u95f4\u5185\u56f4\u7ed5\u539f\u70b9\u65cb\u8f6c\uff08\u4ee5\u89d2\u5ea6\u8ba1\uff09\u7684\u4ee5\u53ca\u8ddd\u79bb\u539f\u70b9\u7684\u534a\u5f84\u5b9a\u4e49\u7684\u4e00\u4e2a\u70b9\u3002\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3ap5\u5185\u4e00\u4e2a\u51fd\u6570\u7684\u5f15\u6570\u3002\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u5141\u8bb8\u6211\u4eec\u5c06\u8fd9\u4e9b\u5750\u6807\u8f6c\u6362\u4e3a\u7b1b\u5361\u5c14\uff0c\u7136\u540e\u88ab\u7528\u4e8e\u7ed8\u5236\u5f62\u72b6\u3002<\/p>\n

\"\u7b1b\u5361\u5c14\u548c\u6781\u5750\u6807\u8f6c\u6362\"<\/a>
\u7b1b\u5361\u5c14\u548c\u6781\u5750\u6807\u8f6c\u6362<\/figcaption><\/figure>\n

sine(theta) \uff1d y\/r \u2192 y \uff1d r * sine(theta)
\ncosine(theta) \uff1d x\/r \u2192 x \uff1d r * cosine(theta)<\/span><\/span><\/span><\/p>\n

18. \u6bd4\u5982\uff0c\u5982\u679cr\u4e3a75\uff0c\u89d2\u5ea6\u4e3a45\u00b0 (\u6216 PI\/4 \u5f27\u5ea6) \uff0c\u6211\u4eec\u53ef\u4ee5\u5982\u4e0b\u8ba1\u7b97x\u548cy\uff1a
\nfloat r = 75;
\nfloat theta = PI \/ 4; \/\/ \u6211\u4eec\u540c\u6837\u53ef\u4ee5\u8bf4: float theta = radians(45);
\nfloat x = r * cos(theta);
\nfloat y = r * sin(theta);<\/dirtycode><\/p>\n

\"\u5706\u5f62\u8f68\u8ff9\"<\/a>
\u5706\u5f62\u8f68\u8ff9<\/figcaption><\/figure>\n

19\u3002 \u8fd9\u6837\u7684\u8f6c\u6362\u5bf9\u6211\u4eec\u6765\u8bf4\u662f\u975e\u5e38\u6709\u7528\u7684\uff0c\u4f8b\u5982\u8bf4\uff0c\u4f60\u5982\u4f55\u7528\u7b1b\u5361\u5c14\u5750\u6807\u4f7f\u4e00\u4e2a\u5f62\u72b6\u5ef6\u5706\u5f62\u8f68\u8ff9\u8fd0\u52a8\uff1f\u90a3\u5c06\u975e\u5e38\u56f0\u96be\u3002\u4e0d\u8fc7\u4f7f\u7528\u6781\u5750\u6807\u4e5f\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u589e\u52a0\u89d2\u5ea6\u5373\u53ef\uff01
\n\/\/ \u6781\u5750\u6807 (r, theta)\u88ab\u8f6c\u6362\u4e3a\u7b1b\u5361\u5c14\u5750\u6807 (x,y)\u5e76\u5728ellipse()\u51fd\u6570\u5e94\u7528
\nfloat r = 75;
\nfloat theta = 0;<\/p>\n

void setup() {
\n size(200,200);
\n background(255);
\n smooth();
\n}<\/p>\n

void draw() {<\/p>\n

\/\/ \u6781\u5750\u6807\u5230\u7b1b\u5361\u5c14\u5750\u6807\u7684\u8f6c\u6362
\n float x = r * cos(theta);
\n float y = r * sin(theta);<\/p>\n

\/\/ \u5728x\uff0cy\u7ed8\u5236\u5706\u5f62
\n noStroke();
\n fill(0);
\n ellipse(x + width\/2, y + height\/2, 16, 16); \/\/ \u4e3a\u7a97\u53e3\u4e2d\u592e\u8fdb\u884c\u8c03\u6574<\/p>\n

\/\/ \u589e\u52a0\u89d2\u5ea6
\n theta += 0.01;
\n}<\/dirtycode><\/p>\n

20. Daniel\u51fa\u9898\uff0c\u6765\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u753b\u4e00\u76d8\u4e03\u5f69\u868a\u9999\u5427\u3002\u3002\u6ce8\u610f\uff0c\u53ea\u9700\u5728\u4e0a\u4f8b\u4ee3\u7801\u57fa\u7840\u4e0a\u4fee\u6539\u4e00\u884c\u3001\u589e\u52a0\u4e00\u884c\u5373\u53ef\u3002\u6211\u505a\u51fa\u6765\u4e86\uff0c\u4f60\u5462\uff1f<\/p>\n

\"\u4e03\u5f69\u868a\u9999\"<\/a>
\u4e03\u5f69\u868a\u9999<\/figcaption><\/figure>\n
\"\u949f\u6446\"<\/a>
\u949f\u6446<\/figcaption><\/figure>\n

21. \u6b63\u5f26\u66f2\u7ebf\u662f\u5e73\u6ed1\u7684\uff0c\u5e76\u4e14\u603b\u5728\uff0d1\u548c1\u95f4\u53d8\u5316\u3002\u8fd9\u79cd\u884c\u4e3a\u7c7b\u578b\u79f0\u4e3a\u632f\u52a8\uff0c\u5728\u4e24\u70b9\u95f4\u7684\u5468\u671f\u8fd0\u52a8\uff0c\u4f8b\u5982\u949f\u6446\u3002\u5728p5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u6b63\u5f26\u51fd\u6570\u7684\u503c\u8d4b\u7ed9\u4e00\u4e2a\u5bf9\u8c61\u7684\u4f4d\u7f6e\u6765\u6a21\u62df\u8fd9\u79cd\u632f\u52a8\u3002\u4e0b\u4f8b\u4e3a\u4e00\u4e2a\u6447\u52a8\u7684\u949f\u6446\u7684\u4ee3\u7801\uff1a
\nfloat theta = 0.0;<\/p>\n

void setup() {
\n size(200,200);
\n smooth();
\n}<\/p>\n

void draw() {
\n background(255);<\/p>\n

\/\/ sin()\u51fd\u6570\u7684\u8f93\u51fa\u5728-1\u52301\u95f4\u5e73\u6ed1\u632f\u52a8.
\n \/\/ \u901a\u8fc7\u52a01\uff0c\u6211\u4eec\u5f97\u52300\uff5e2\u95f4\u7684\u632f\u52a8.
\n \/\/ \u901a\u8fc7\u4e58\u4ee5100\uff08width\/2\uff09\uff0c\u6211\u4eec\u5f97\u52300\uff5e200\u7684\u503c\uff0c\u8fd9\u53ef\u4ee5\u7528\u4e8ex\u4f4d\u7f6e\u3002
\n float x = (sin(theta) + 1) * width\/2; <\/p>\n

\/\/ \u5bf9\u4e8e\u6bcf\u6b21\u5faa\u73af\uff0c\u589e\u52a0theta\u3002
\n theta += 0.05;<\/p>\n

\/\/ \u7528\u6b63\u5f26\u503c\u7ed8\u5236\u5706\u5f62
\n fill(0);
\n stroke(0);
\n line(width\/2,0,x,height\/2);
\n ellipse(x,height\/2,16,16);
\n}<\/dirtycode><\/p>\n

22. Daniel\u51fa\u9898\uff1a\u5c06\u4ee5\u4e0a\u529f\u80fd\u5c01\u88c5\u5165Oscillator\u5bf9\u8c61\uff0c\u83b7\u53d6\u4e00\u4e2aOscillators\u6570\u7ec4\uff0c\u6bcf\u4e2a\u90fd\u56f4\u7ed5x\u548cy\u8f74\u4ee5\u4e0d\u540c\u7684\u6bd4\u7387\u8fd0\u52a8\u3002\u54e6\uff0c\u548c\u4f60\u4e00\u6837\uff0c\u6211\u8fd8\u4e0d\u5927\u4f1a\u7528\u7c7b\uff0c\u56e0\u6b64\u6700\u540e\u5728\u8fd9\u91cc<\/a>\u770b\u4e00\u4e0b\u7b54\u6848\u3002\u770b\u5b8c\u8fd8\u662f\u5f88\u6709\u5e2e\u52a9\u7684\uff0c\u4e00\u904d\u904d\u7684\u770b\u8fd9\u4e9b\u7c7b\u4f3c\u4ee3\u7801\uff0c\u5dee\u4e0d\u591a\u4e5f\u80fd\u8bb0\u4e2a\u4e03\u516b\u6210\u4e86\u5427\u3002\u3002<\/p>\n

\"\u6b63\u5f26\u8def\u5f84\u7403\u7403\"<\/a>
\u6b63\u5f26\u8def\u5f84\u7403\u7403<\/figcaption><\/figure>\n

23. \u540c\u6837\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6b63\u5f26\u51fd\u6570\u7684\u8def\u5f84\u4e0a\u7ed8\u5236\u4e00\u5e8f\u5217\u5f62\u72b6\u4ee5\u5b9e\u73b0\u6709\u8da3\u7684\u6548\u679c\u3002
\nfloat theta = 0.0;<\/p>\n

void setup() {
\n size(200,200);
\n smooth();
\n}<\/p>\n

void draw() {
\n background(255);<\/p>\n

\/\/ \u589e\u52a0theta
\n theta += 0.02;
\n noStroke();
\n fill(0);
\n float x = theta;<\/p>\n

\/\/ \u4e00\u4e2afor\u5faa\u73af\u88ab\u7528\u6765\u7ed8\u5236\u4f9d\u9644\u6b63\u5f26\u6ce2\u8def\u5f84\u7684\u6240\u6709\u70b9 (\u4f7f\u5176\u653e\u5927\u5230\u7a97\u53e3\u50cf\u7d20\u5c3a\u5bf8).
\n for (int i = 0; i <= 20; i++) {\n \/\/ \u57fa\u4e8e\u6b63\u5f26\u51fd\u6570\u8ba1\u7b97y\n float y = sin(x)*height\/2;\n \/\/ \u7ed8\u5236\u4e00\u4e2a\u5706\n ellipse(i*10,y + height\/2,16,16);\n \/\/ \u987ax\u8f74\u79fb\u52a8\n x += 0.2;\n }\n}<\/dirtycode><\/p>\n

24. 1975\u5e74\uff0cBenoit Mandelbrot\u521b\u9020\u4e86\u5206\u5f62\uff08fractal\uff09\u4f53\u7cfb\u7528\u4ee5\u5f62\u5bb9\u81ea\u7136\u754c\u4e2d\u90a3\u4e9b\u81ea\u76f8\u4f3c\u7684\u5f62\u72b6\u3002\u4ea7\u751f\u8fd9\u4e9b\u5f62\u72b6\u7684\u4e00\u4e2a\u7a0b\u5e8f\u88ab\u79f0\u4e3a\u9012\u5f52\u6216\u5faa\u73af\uff08recursion\uff09\u3002<\/p>\n

25. \u6211\u4eec\u77e5\u9053\u5728draw()\u5185\uff0c\u4e00\u4e2a\u51fd\u6570\u53ef\u4ee5\u547c\u53eb\u53e6\u4e00\u4e2a\u51fd\u6570\u3002\u4f46\u5b83\u4eec\u53ef\u4ee5\u547c\u53eb\u5b83\u4eec\u672c\u8eab\u5417\uff1fdraw()\u53ef\u4ee5\u547c\u53ebdraw()\u5417\uff1f\u5b9e\u9645\u4e0a\uff0c\u5b83\u53ef\u4ee5\uff08\u867d\u7136\u8fd9\u4f1a\u9020\u6210\u6b7b\u5faa\u73af\u7684\u60e8\u70c8\u5c40\u9762..\uff09\u3002\u51fd\u6570\u547c\u53eb\u81ea\u8eab\u4fbf\u662f\u9012\u5f52\u3002\u5728\u6570\u5b66\u4e2d\uff0c\u6700\u666e\u904d\u7684\u4f8b\u5b50\u4fbf\u662f\u9636\u4e58\u3002n\u4e2a\u6570\u7684\u9636\u4e58\uff1a
\n n! \uff1d n * n \u2013 1 * . . . . * 3 * 2 * 1
\n0! \uff1d 1<\/span>
\n\u5728p5\u5185\u7528for\u5faa\u73af\u5199\uff1a
\nint factorial(int n) {
\n int f = 1;
\n for (int i = 0; i < n; i++ ){ \n f = f * (i + 1); \n } \n return f; \n}<\/dirtycode>
\n\u518d\u8fdb\u4e00\u6b65\u89c2\u5bdf\u9636\u4e58\uff1a
\n 4! \uff1d 4 * 3 * 2 * 1
\n3! \uff1d 3 * 2 * 1<\/span>
\n\u56e0\u6b64. . . 4! \uff1d 4 * 3!<\/span>
\n\u518d\u63a8\uff1a
\n n! \uff1d n * ( n \u2013 1)!
\n1! \uff1d 1<\/span><\/p>\n

26. \u9636\u4e58\u7684\u5b9a\u4e49\u5305\u62ec\u9636\u4e58\u5417\uff1f\uff01\u8fd9\u6709\u70b9\u50cf\u8bf4\u201c\u75b2\u5026\u201d\u88ab\u5b9a\u4e49\u4e3a\u201c\u5f53\u4f60\u75b2\u5026\u65f6\u7684\u611f\u53d7\u201d\u3002\u8fd9\u79cd\u5728\u51fd\u6570\u5185\u81ea\u53c2\u7167\u7684\u6982\u5ff5\u88ab\u79f0\u4e3a\u9012\u5f52\u3002\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u9012\u5f52\u5199\u4e00\u4e2a\u547c\u53eb\u81ea\u8eab\u9636\u4e58\u7684\u51fd\u6570\u3002
\n int factorial(int n) {
\n if (n == 1) {
\n return 1;
\n } else {
\n return n * factorial(n-1);
\n }
\n }<\/dirtycode><\/p>\n

27. \u4e0b\u56fe\u4e3afractorial(4)\u65f6\u7684\u60c5\u51b5<\/p>\n

\"fractorial(4)\"<\/a>
fractorial(4)<\/figcaption><\/figure>\n

28. \u540c\u6837\u7684\u539f\u7406\u53ef\u4ee5\u88ab\u7528\u6765\u7ed8\u5236\u6709\u8da3\u7684\u56fe\u5f62\u3002\u770b\u770b\u63a5\u4e0b\u6765\u7684\u9012\u5f52\u51fd\u6570\u3002
\nvoid drawCircle(int x, int y, float radius) {
\n ellipse(x, y, radius, radius);
\n if(radius > 2) {
\n radius *= 0.75f;
\n drawCircle(x, y, radius);
\n }
\n} <\/dirtycode>
\n drawCircle()<\/span><\/em>\u5e72\u4e86\u4ec0\u4e48\uff1f\u5b83\u7ed8\u5236\u4e00\u4e2a\u5706\uff0c\u7136\u540e\u4ee5\u76f8\u540c\u7684\u53c2\u6570\uff08\u5fae\u5fae\u8c03\u6574\uff09\u547c\u53eb\u81ea\u8eab\u3002\u7ed3\u679c\u5c31\u662f\u4e00\u7cfb\u5217\u5728\u81ea\u8eab\u5185\u7ed8\u5236\u7684\u5706\u5f62\u3002\u6ce8\u610f\u4ee5\u4e0a\u51fd\u6570\u4ec5\u5728\u534a\u5f84\u5927\u4e8e2\u65f6\u9012\u5f52\u547c\u53eb\u81ea\u8eab\u3002\u8fd9\u662f\u4e00\u4e2a\u5173\u952e\u70b9\u3002\u6240\u6709\u9012\u5f52\u51fd\u6570\u5fc5\u987b\u62e5\u6709\u4e00\u4e2a\u63a8\u51fa\u7684\u6761\u4ef6\uff08exit condition\uff09\uff01\u50cffor<\/span><\/em>\u548cwhile<\/span><\/em>\u5faa\u73af\u4e00\u6837\uff0c\u5982\u679c\u6ca1\u6709\u505c\u6b62\u7684\u6761\u4ef6\uff0c\u5219\u5f88\u53ef\u80fd\u4f1a\u51fa\u73b0\u6b7b\u5faa\u73af\u6700\u540e\u4f7f\u7a0b\u5e8f\u5d29\u6e83\u3002<\/p>\n

\"\u5206\u5f62\u4e00\"<\/a>
\u5206\u5f62\u4e00<\/figcaption><\/figure>\n

29. \u8ba9\u6211\u4eec\u8bd5\u7740\u5c06drawCircle()<\/span><\/em>\u641e\u5f97\u66f4\u590d\u6742\u4e00\u70b9\u70b9\u3002\u7ed8\u5236\u4e00\u4e2a\u5706\u5f62\uff0c\u5e76\u5728\u5176\u5de6\u53f3\u5206\u522b\u7ed8\u5236\u4e24\u4e2a\u5927\u5c0f\u4e3a\u5176\u4e00\u534a\u7684\u5706\uff0c\u5982\u6b64\u53cd\u590d\uff1a
\nvoid setup() {
\n size(200,200);
\n smooth();
\n}<\/p>\n

void draw() {
\n background(255);
\n stroke(0);
\n noFill();
\n drawCircle(width\/2,height\/2,100);
\n}<\/p>\n

void drawCircle(float x, float y, float radius) {
\n ellipse(x, y, radius, radius);
\n if(radius > 2) {
\n \/\/ drawCircle()\u547c\u53eb\u81ea\u5df1\u4e24\u6b21\uff0c\u5236\u9020\u4e00\u4e2a\u5206\u652f\u6548\u679c
\n \/\/ \u5bf9\u6bcf\u4e2a\u5706\u6765\u8bf4\uff0c\u4e24\u4e2a\u66f4\u5c0f\u7684\u5706\u5206\u522b\u5728\u5176\u4e00\u5de6\u4e00\u53f3\u7ed8\u5236.
\n drawCircle(x + radius\/2, y, radius\/2);
\n drawCircle(x – radius\/2, y, radius\/2);
\n }
\n}<\/dirtycode><\/p>\n

\"\u5206\u5f62\u4e8c\"<\/a>
\u5206\u5f62\u4e8c<\/figcaption><\/figure>\n

30. \u540c\u6837\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u57fa\u4e8e\u4e0a\u4f8b\u5206\u522b\u518d\u5728\u6bcf\u4e2a\u5706\u7684\u4e00\u4e0a\u4e00\u4e0b\u5404\u589e\u52a0\u4e00\u4e2a\u5706\uff0c\u6548\u679c\u5f88\u7f8e\uff1a
\nvoid drawCircle(float x, float y, float radius) {
\n ellipse(x, y, radius, radius);
\n if(radius > 8) {
\n drawCircle(x + radius\/2, y, radius\/2);
\n drawCircle(x – radius\/2, y, radius\/2);
\n drawCircle(x, y + radius\/2, radius\/2);
\n drawCircle(x, y – radius\/2, radius\/2);
\n }
\n}<\/dirtycode><\/p>\n

31. \u8fd9\u9053\u7ec3\u4e60\u641e\u5f97\u6211\u5f88\u7ea0\u7ed3\uff08\u54e6\uff0c\u770b\u6765\u6ce8\u91ca\u771f\u7684\u5f88\u91cd\u8981\uff0chey\uff0cDaniel\uff0c\u522b\u8bf4\u586b\u4f60\u7559\u7ed9\u6211\u7684\u7a7a\u4e86\uff0c\u5149\u770b\u61c2\u4f60\u7b54\u6848\u7684\u4ee3\u7801\u90fd\u5f88\u96be\u554a- -\uff09\uff0c\u8fd8\u662f\u5c5e\u4e8e\u5bf9\u8c61\u6ca1\u5b66\u597d…\uff1a
\n void setup() {
\n size(400,200);
\n smooth();
\n} <\/p>\n

void draw() {
\n background(255);
\n stroke(0);
\n branch(width\/2,height,100);
\n} <\/p>\n

void branch(float x, float y, float h) {
\n line(x,y,x-h,y-h);
\n line(x,y,x+h,y-h);
\n if (h > 2) {
\n branch(x-h,y-h,h\/2);
\n branch(x+h,y-h,h\/2);
\n }
\n}<\/dirtycode>
\n\u6069\uff0c\u7ecf\u8fc7\u534a\u5929\u4e00\u591c\u7684\u601d\u8003\u548c\u8349\u7a3f\uff0c\u6211\u7ec8\u4e8e\u5f04\u660e\u767d\u8fd9\u9898\u4e86\u3002\u3002\u8fd8\u6709\u60f3\u4e0d\u660e\u767d\u7684\u53ef\u4ee5\u95ee\u6211\u3002<\/p>\n

\"\u5206\u5f62\u4e09\"<\/a>
\u5206\u5f62\u4e09<\/figcaption><\/figure>\n

32. \u4e4b\u524d\u6211\u4eec\u5b66\u4e60\u7684\u6570\u7ec4\u662f\u4e00\u7ef4\u7684\uff0c\u6bd4\u5982\uff1a
\nint[] myArray = { 0,1,2,3};<\/dirtycode>
\n\u5176\u5b9e\u5b83\u4e5f\u53ef\u4ee5\u591a\u7ef4\uff0c\u6bd4\u5982\u4e8c\u7ef4\u7684\u6570\u7ec4\u770b\u8d77\u6765\u5c31\u50cf\u8fd9\u6837\uff1a
\nint[][] myArray = { { 0,1,2,3},{3,2,1,0},{3,5,6,1},{3,8,3,4} } ;<\/dirtycode>
\n\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0c\u6570\u7ec4\u7684\u6570\u7ec4\u3002\u800c\u4e09\u7ef4\u6570\u7ec4\u4fbf\u53ef\u7406\u89e3\u4e3a\u6570\u7ec4\u7684\u6570\u7ec4\u7684\u6570\u7ec4\u3002<\/p>\n

33. \u51fa\u4e8e\u6211\u4eec\u7684\u76ee\u7684\uff0c\u6211\u4eec\u6700\u597d\u5c06\u4e8c\u7ef4\u6570\u7ec4\u770b\u505a\u4e00\u4e2a\u77e9\u9635\uff0c\u5199\u505a\uff1a
\nint[][] myArray = { {0, 1, 2, 3},
\n { 3, 2, 1, 0},
\n { 3, 5, 6, 1},
\n { 3, 8, 3, 4} }; <\/dirtycode><\/p>\n

34. \u6211\u4eec\u53ef\u4ee5\u5229\u7528\u8fd9\u79cd\u6570\u636e\u7ed3\u6784\u7f16\u7801\u4e00\u4e2a\u56fe\u7247\u7684\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u4e0d\u540c\u989c\u8272\u7684\u7f51\u683c\u53ef\u7531\u5982\u4e0b\u4ee3\u7801\u5b9e\u73b0\uff08\u6bcf\u4e2a\u503c\u4ee3\u8868\u4e00\u4e2a\u989c\u8272\uff09\uff1a
\nint[][] myArray = { { 236, 189, 189, 0},
\n { 236, 80, 189, 189},
\n { 236, 0, 189, 80},
\n { 236, 189, 189, 80} }; <\/dirtycode><\/p>\n

35. \u987a\u5e8f\u9605\u904d\u4e00\u7ef4\u6570\u7ec4\uff0c\u6211\u4eec\u7528for\u5faa\u73af\uff1a
\nint[] myArray = new int[10];
\nfor (int i = 0; i < myArray.length; i++ ) { \n myArray[i] = 0; \n } <\/dirtycode>
\n\u800c\u5bf9\u4e8e\u4e8c\u7ef4\u6570\u7ec4\uff0c\u5982\u679c\u60f3\u8981\u5173\u7167\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u6211\u4eec\u5fc5\u987b\u8981\u4f7f\u7528\u4e24\u4e2a\u5d4c\u5957\u7684\u5faa\u73af\u3002\u8fd9\u7ed9\u4e86\u6211\u4eec\u4e00\u4e2a\u5bf9\u4e8e\u77e9\u9635\u5185\u6bcf\u4e00\u884c\u6bcf\u4e00\u5217\u7684\u8ba1\u6570\u5668\u53d8\u91cf\u3002
\nint cols = 10;
\nint rows = 10;
\nint[][] myArray = new int[cols][rows];<\/p>\n

\/\/ \u4e24\u4e2a\u5d4c\u5957\u7684\u5faa\u73af\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e00\u70b9\u3002\u4f7f\u6bcf\u4e2a\u5217i\uff0c\u65b9\u4f4d\u6bcf\u4e2a\u884cj\u3002
\nfor (int i = 0; i < cols; i++) { \n for (int j = 0; j < rows; j++) { \n myArray[i][j] = 0; \n } \n}<\/dirtycode><\/p>\n

\"\u7070\u70b9\u70b9\"<\/a>
\u7070\u70b9\u70b9<\/figcaption><\/figure>\n

36. \u4e00\u4e2a\u4f8b\u5b50\uff1a
\n\/\/ \u5efa\u7acb\u7ef4\u6570
\nsize(200,200);
\nint cols = width;
\nint rows = height;<\/p>\n

\/\/ \u7533\u660e2D\u6570\u7ec4
\nint[][] myArray = new int[cols][rows];<\/p>\n

\/\/ \u521d\u59cb\u53162D\u6570\u7ec4\u503c
\nfor (int i = 0; i < cols; i ++ ) {\n for (int j = 0; j < rows; j ++ ) {\n myArray[i][j] = int(random(255));\n }\n}\n\n\/\/ \u753b\u70b9\nfor (int i = 0; i < cols; i ++ ) {\n for (int j = 0; j < rows; j ++ ) {\n stroke(myArray[i][j]);\n point(i,j);\n }\n}<\/dirtycode><\/p>\n

\"\u6b63\u5f26\u95ea\u683c\"<\/a>
\u6b63\u5f26\u95ea\u683c<\/figcaption><\/figure>\n

37. \u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u540c\u6837\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u5bf9\u8c61\uff0c\u8fd9\u5c24\u5176\u9002\u7528\u4e8e\u90a3\u4e9b\u5305\u62ec\u67d0\u79cd\u7f51\u683c\u6216\u677f\u5b50\u7684\u7a0b\u5e8f\u3002\u4e0b\u4f8b\u663e\u793a\u7684\u6b63\u662f\u5c06\u4e00\u5806Cell\u5bf9\u8c61\u5b58\u50a8\u4e8e\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u3002\u6bcf\u4e2acell\u7684\u4eae\u5ea6\u7531\u4e00\u4e2a\u6b63\u5f26\u51fd\u6570\u5f15\u53d1\u75310\uff5e255\u7684\u632f\u52a8\u3002
\n\/\/ \u5bf9\u8c61\u76842D\u6570\u7ec4
\nCell[][] grid; <\/p>\n

\/\/ \u7f51\u683c\u7684\u884c\u6570\u548c\u5217\u6570
\nint cols = 10;
\nint rows = 10;<\/p>\n

void setup() {
\n size(200,200);
\n grid = new Cell[cols][rows];<\/p>\n

\/\/ \u8ba1\u6570\u5668\u53d8\u91cfi\u548cj\u540c\u6837\u662f\u884c\u548c\u5217\u7684\u6570\u76ee
\n \/\/ \u5728\u672c\u4f8b\u4e2d, \u5b83\u4eec\u88ab\u7528\u4e8e\u683c\u5b50\u5bf9\u8c61\u6784\u9020\u5668\u7684\u5f15\u6570
\n for (int i = 0; i < cols; i ++ ) {\n for (int j = 0; j < rows; j ++ ) {\n \/\/ Initialize each object\n grid[i][j] = new Cell(i*20,j*20,20,20,i + j);\n }\n }\n}\n\nvoid draw() {\n background(0);\n for (int i = 0; i < cols; i ++ ) { \n for (int j = 0; j < rows; j ++ ) {\n \/\/ \u632f\u52a8\u5e76\u663e\u793a\u6bcf\u4e2a\u5bf9\u8c61\n grid[i][j].oscillate();\n grid[i][j].display();\n }\n }\n}\n\n\/\/ \u4e00\u4e2aCell\u5bf9\u8c61\n\nclass Cell {\n\n \/\/ \u4e00\u4e2acell\u5bf9\u8c61\u901a\u8fc7\u53d8\u91cfx,y,w,h\u83b7\u53d6\u5176\u5728\u7f51\u683c\u5185\u7684\u4f4d\u7f6e\u548c\u5927\u5c0f\n float x,y; \/\/ x,y\u4f4d\u7f6e\n float w,h; \/\/ \u5bbd\u3001\u9ad8\n float angle; \/\/ \u632f\u52a8\u4eae\u5ea6\u7684\u89d2\u5ea6\n \n \/\/ Cell\u6784\u9020\u5668\n Cell(float tempX, float tempY, float tempW, float tempH, float tempAngle) {\n x = tempX;\n y = tempY;\n w = tempW;\n h = tempH;\n angle = tempAngle;\n }\n \n \/\/ \u632f\u52a8\u610f\u5473\u7740\u589e\u52a0\u89d2\u5ea6\n void oscillate() {\n angle += 0.02;\n }\n \n void display() {\n stroke(255);\n \/\/ \u7528\u6b63\u5f26\u6ce2\u8ba1\u7b97\u989c\u8272\n fill(127 + 127*sin(angle));\n rect(x,y,w,h);\n }\n}<\/dirtycode><\/p>\n

38. \u6700\u540e\u8fd9\u4e2a\u7ec3\u4e60<\/a>\u8c8c\u4f3c\u5f88\u6709\u610f\u601d\u3002\u4f46\u5b66\u5230\u8fd9\u91cc\u6211\u5df2\u7ecf\u5f88\u60f3\u6b7b\u4e86\uff0c\u8840\u69fd\u8fd8\u6709\u8840\u7684\u6162\u6162\u73a9\u5427\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

14. \u6211\u4eec\u76f4\u89c9\u4e0a\u4e60\u60ef\u4ee5\u5ea6\u6570\u6765\u8003\u8651\u89d2\u3002\u4f46Processing\u5374\u8981\u6c42\u6211\u4eec\u7528\u5f27\u5ea6\u6765\u5236\u4f5c\u4e00\u4e2a\u89d2\u3002 \u89d2\u5ea6\u3001\u5f27\u5ea6\u8f6c\u6362\u516c\u5f0f\uff1a \u5f27\u5ea6 \uff1d 2 * PI * (\u89d2\u5ea6\/360) \u5e78\u8fd0\u7684\u662f\uff0c\u82e5\u6211\u4eec\u4e60\u60ef\u4e86\u4ee5\u89d2\u5ea6\u6765\u8003\u8651\u89d2\u800c\u53c8\u5fc5\u987b\u4ee5\u5f27\u5ea6\u5199\u4ee3\u7801\uff0cProcessing\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86radians()\u51fd\u6570\u81ea\u52a8\u5c06\u89d2\u5ea6\u503c\u8f6c\u5316\u4e3a\u5f27\u5ea6\u503c\u3002\u53e6\u5916\uff0c\u5e38\u6570PI\u548cTWO_PI\u4e5f\u53ef\u4ee5\u73b0\u6210\u4f7f\u7528\uff08\u5206\u522b\u7b49\u4e8e180 \u00b0 \u548c 360 \u00b0 \uff09\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c06\u4f7f\u5f62\u72b6\u65cb\u8f6c60 \u00b0 \u3002 float angle = radians(60); rotate(angle); 15. \u590d\u4e60\u4e00\u4e0b\uff0c\u6570\u5b66\u5e38\u6570PI (\u6216 \u03c0 )\u662f\u5706\u5468\u4e0e\u5176\u76f4\u5f84\u7684\u6bd4\u7387\uff08\u56f4\u7ed5\u5706\u5468\u7684\u8ddd\u79bb\uff09\u3002\u5b83\u7684\u503c\u7ea6\u7b49\u4e8e3.14159\u3002 16. Sohcahtoa\uff0c\u8c8c\u4f3c\u65e0\u610f\u4e49\u800c\u4e14\u5947\u602a\u7684\u8bcd\uff0c\u786e\u5b9e\u5de8\u5927\u90e8\u5206\u8ba1\u7b97\u673a\u56fe\u5f62\u5de5\u4f5c\u7684\u57fa\u7840\u3002\u5f53\u4f60\u8981\u8ba1\u7b97\u4e00\u4e2a\u89d2\uff0c\u51b3\u5b9a\u70b9\u95f4\u8ddd\uff0c\u9664\u4e86\u5706\u5f62\u6216\u5f27\u5f62\u7b49\u7b49\u7b49\u7b49\u7684\u65f6\u5019\uff0c\u4f60\u4f1a\u53d1\u73b0\u4e09\u89d2\u5b66\u7684\u91cd\u8981\u6027\u3002sohcahtoa\u662f\u8bb0\u5fc6\u4e09\u89d2\u5b66\u57fa\u7840\uff0c\u6b63\u5f26\u3001\u4f59\u5f26\u548c\u6b63\u5207\u7684\u52a9\u8bb0\u7b26\u3002 \u25ce soh : sine \uff1d \u5bf9\u8fb9\/\u659c\u8fb9 \u25ce cah : cosine \uff1d \u90bb\u8fb9\/\u659c\u8fb9 \u25ce toa : tangent \uff1d \u5bf9\u8fb9\/\u90bb\u8fb9 17. \u6211\u4eec\u8981\u5728Processing\u5185\u7ed8\u5236\u56fe\u5f62\uff0c\u9700\u8981\u7ed9\u51fa\u5176x\uff0cy\u5750\u6807\u503c\uff0c\u8fd9\u79cd\u5750\u6807\u79f0\u4e3a\u7b1b\u5361\u5c14\u5750\u6807\u3002\u53e6\u5916\u4e00\u79cd\u6709\u7528\u7684\u5750\u6807\u79f0\u4e3a\u6781\u5750\u6807\uff0c\u4ee5\u7a7a\u95f4\u5185\u56f4\u7ed5\u539f\u70b9\u65cb\u8f6c\uff08\u4ee5\u89d2\u5ea6\u8ba1\uff09\u7684\u4ee5\u53ca\u8ddd\u79bb\u539f\u70b9\u7684\u534a\u5f84\u5b9a\u4e49\u7684\u4e00\u4e2a\u70b9\u3002\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3ap5\u5185\u4e00\u4e2a\u51fd\u6570\u7684\u5f15\u6570\u3002\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u5141\u8bb8\u6211\u4eec\u5c06\u8fd9\u4e9b\u5750\u6807\u8f6c\u6362\u4e3a\u7b1b\u5361\u5c14\uff0c\u7136\u540e\u88ab\u7528\u4e8e\u7ed8\u5236\u5f62\u72b6\u3002 sine(theta) \uff1d y\/r \u2192 y […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[58],"class_list":["post-614","post","type-post","status-publish","format-standard","hentry","category-processing","tag-processing"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=614"}],"version-history":[{"count":36,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/614\/revisions"}],"predecessor-version":[{"id":663,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/614\/revisions\/663"}],"wp:attachment":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}