陣列 & 迴圈副本 | JavaScript 程式專案

{"id":64674,"student_id":1909,"content":"setBackdrop(\"#222\");\n\nvar shape = 'rect'; // \"rect\" or \"circle\"\nvar index = false;\nvar animate = false;\nvar grid = [];\n// grid.push(\"red\",\"green\",\"blue\");\n// grid[0] = \"red\";\n// grid[1] = \"orange\";\n// grid[2] = \"yellow\";\n// grid[3] = \"green\";\n// grid[4] = \"blue\";\n// grid[5] = \"purple\";\n// grid[6] = \"white\";\n\n// for (var i = 0; i \u003c 15; i++) {\n//     grid.push(\"red\");\n//     grid.push(\"blue\");\n// }\nvar column = [];\n\nfor (var i = 0; i \u003c 10; i++) {\n    column.push('red');\n    grid.push(column);\n}\nfor (var i = 0; i \u003c 10; i++) {\n    column.push('white');\n}\nfor (var i = 0; i \u003c 10; i++) {\n    column.push('#42ebf4');\n}\nfor (var i = 0; i \u003c 35; i++) {\n    grid.push(column);\n}\n// var column2 = ['white'];\n// for (var i = 0; i \u003c 10; i++) {\n//     grid.push('white');\n// }\n// // var column3 = ['#42ebf4'];\n// for (var i = 0; i \u003c 10; i++) {\n//     grid.push('#42ebf4');\n// }\n\n    \n\n\n// for (var i = 0; i \u003c 23; i++) {\n//     grid.push(column1);\n//     grid.push(column2);\n//     grid.push(column3);\n// }\n\n\n\n\n\n\n","created_at":"2019-04-27T16:04:18.998+08:00","updated_at":"2019-10-12T23:40:57.839+08:00","name":"陣列 \u0026 迴圈 副本","language":"javascript","screenshot":{"url":"https://cdn6.koding.school/uploads/project/screenshot/64674/fd7084845949c64cd66c246d7fb8bfcb.jpg"},"parent_id":10709,"plugin":"var grid = [];\nvar padding = 20;\npen.size = 0;\n\nforever(function(){\n\n    var w,h;\n\n    w = grid.length;\n    h = 1;\n    for(var i=0; i\u003cgrid.length; i++) {\n        if(grid[i].constructor === Array \u0026\u0026 grid[i].length \u003e h) {\n            h = grid[i].length;\n        }\n    }\n\n    var a = (640 - padding*2) / w;\n    var b = (480 - padding*2) / h;\n    var cellWidth = a \u003e b ? b : a;\n\n    var offsetX = (640 - cellWidth * w) / 2;\n    var offsetY = (480 - cellWidth * h) / 2;\n\n    var time = Date.now()/1000;\n\n    for(var i=0; i\u003cgrid.length; i++) {\n        if(grid[i].constructor === Array) {\n            for(var j=0; j\u003cgrid[i].length; j++) {\n                if(grid[i][j]===undefined) continue;\n                pen.fillColor = grid[i][j];\n                if(window.shape == 'rect' \u0026\u0026 !animate) {\n                    pen.drawRect(offsetX + i*cellWidth, offsetY + j*cellWidth, cellWidth - cellWidth/10, cellWidth - cellWidth/10);\n                }\n                if(window.shape == 'circle' \u0026\u0026 !animate) {\n                    pen.drawCircle(offsetX + i*cellWidth + cellWidth/2, offsetY + j*cellWidth + cellWidth/2, cellWidth/2 - cellWidth/10);\n                }\n                if(animate) {\n                    var waveX = Math.sin(time*3.5 - Math.PI*i/8);\n                    var waveY = Math.sin(time*3.5 - Math.PI*i/8 - Math.PI/2);\n                }\n                if(window.shape == 'rect' \u0026\u0026 animate) {\n                    pen.drawRect(offsetX + i*cellWidth + waveX*3, offsetY + j*cellWidth + waveY*6, cellWidth - cellWidth/10 - waveX*1.2, cellWidth - cellWidth/10 - waveX*1.2);\n                }\n                if(window.shape == 'circle' \u0026\u0026 animate) {\n                    pen.drawCircle(offsetX + i*cellWidth + cellWidth/2 + waveX*3, offsetY + j*cellWidth + cellWidth/2 + waveY*6, cellWidth/2 - cellWidth/10 - waveX*1.2);\n                }\n            }\n        } else {\n            if(grid[i]===undefined) continue;\n            pen.fillColor = grid[i];\n            if(window.shape == 'rect' \u0026\u0026 !animate) {\n                pen.drawRect(offsetX + i*cellWidth, offsetY, cellWidth - cellWidth/10, cellWidth - cellWidth/10);\n            }\n            if(window.shape == 'circle' \u0026\u0026 !animate) {\n                pen.drawCircle(offsetX + i*cellWidth + cellWidth/2, offsetY + cellWidth/2, cellWidth/2 - cellWidth/10);\n            }\n            if(animate) {\n                var waveX = Math.sin(time*3.5 - Math.PI*i/8);\n                var waveY = Math.sin(time*3.5 - Math.PI*0/8 - Math.PI/2);\n            }\n            if(window.shape == 'rect' \u0026\u0026 animate) {\n                pen.drawRect(offsetX + i*cellWidth + waveX*3, offsetY + waveY*6, cellWidth - cellWidth/10 - waveX*1.2, cellWidth - cellWidth/10 - waveX*1.2);\n            }\n            if(window.shape == 'circle' \u0026\u0026 animate) {\n                pen.drawCircle(offsetX + i*cellWidth + cellWidth/2 + waveX*3, offsetY + cellWidth/2 + waveY*6, cellWidth/2 - cellWidth/10 - waveX*1.2);\n            }\n        }\n    }\n\n    if(index) {\n        var size =  cellWidth/3 \u003e 30 ? 30 : cellWidth/3;\n        for(var i=0; i\u003cw; i++) {\n            print(i, offsetX + i*cellWidth, offsetY - size*1.5, \"white\", size);\n        }\n        if(h \u003e 1) {\n            for(var i=0; i\u003ch; i++) {\n                print(i, offsetX - size*1.5, offsetY + i*cellWidth, \"white\", size);\n            }\n        }\n    }\n});","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":68,"hashid":"npmsrmg8","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}