蒙地卡羅求 PI 副本 | JavaScript 程式專案

{"id":56975,"student_id":1587,"content":"stopRendering();\npen.size = 0;\nvar pi;\nvar a = 0;\nvar b = 0;\n\n//背景(黃)\npen.fillColor = '#faff00';\npen.drawRect(0, 0, 640, 480);\n\n//背景(白)\npen.fillColor = 'white';\npen.drawRect(480, 0, 160, 40);\n\n//背景(綠)\npen.fillColor = '#00ff0c';\npen.drawRect(0, 0, 480, 480);\n\n//製造點點(紅+藍)\nforever(function() {\n    pi = b*4/a;\n    \n    pen.fillColor = 'white';\n    pen.drawRect(480, 0, 160, 40);\n    print(\"Pi = \" + pi,482,5,\"black\",20);\n    // console.log(pi);\n    for (var i=0; i\u003c1000; i++) {\n        var h = Math.random() * 480;\n        var w = Math.random() * 480;\n        var h2 = h-240;\n        var w2 = w-240;\n        //var toMid = Math.sqrt(h2*h2+w2*w2);\n        var toMid = Math.sqrt(h2*h2+w2*w2);\n        if (toMid \u003c 240) {\n            //blue\n            if (h\u003e240 \u0026\u0026w \u003c 240) {\n                pen.fillColor = '#3535ff';//右上\n            } else if (h\u003e240) {\n                pen.fillColor = '#0202ff';//右下\n            } else if (h\u003c240 \u0026\u0026 w \u003c 240) {\n                pen.fillColor = '#7c7cff';//左上\n            } else if (h\u003c240) {\n                pen.fillColor = '#000070';//左下\n            }\n            if (toMid \u003c 100) {\n                pen.fillColor = '#00b7e0';//中大\n            }\n            if (toMid \u003c 50) {\n                pen.fillColor = '#60e2ff';//中中\n            }\n            if (toMid \u003c 20) {\n                pen.fillColor = '#ccf5ff';//中小\n            }\n            a++;\n            b++;\n        } else {\n            //red\n            pen.fillColor = '#ff0000';\n            a++;\n        }\n        pen.drawRect(h, w, 2, 2);\n    }\n});\n\n\n\n\n","created_at":"2019-02-16T09:49:16.805+08:00","updated_at":"2019-10-30T10:23:31.900+08:00","name":"蒙地卡羅求 PI 副本","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/56975/c61226bcb77e9451915476b8559ff58d.jpg"},"parent_id":31606,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":115,"hashid":"qmdsgwv3","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}