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    // Каждый элемент в своем канвасе\\nellipsCtx = document.getElementById(\\\"ellips\\\").getContext(\\\"2d\\\");\\nsplineCtx = document.getElementById(\\\"spline\\\").getContext(\\\"2d\\\");\\nfigureCtx = document.getElementById(\\\"figure\\\").getContext(\\\"2d\\\");\\n\\n\\nfunction circle(ctx, center, r){\\n    ctx.strokeStyle = \\\"black\\\";\\n    let x = center.x + r, y = center.y;\\n    let t = 0;\\n    ctx.beginPath(); ctx.moveTo(x, y);\\n\\n    while(t < 2 * Math.PI){\\n        x = center.x + r * Math.cos(t);             // думаю и так все понятно\\n        y = center.y + r * Math.sin(t);\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n    ctx.closePath(); ctx.stroke();\\n}\\n\\nfunction ellips(ctx, center, rx, ry){\\n    ctx.strokeStyle = \\\"green\\\";\\n    let x = center.x + rx,\\n        y = center.y;\\n    let t = 0;\\n    ctx.beginPath(); ctx.moveTo(x, y);\\n\\n    while (t < 2 * Math.PI) {\\n        x = center.x + rx * Math.cos(t);            // аналогично\\n        y = center.y + ry * Math.sin(t);\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n    ctx.closePath(); ctx.stroke();\\n}\\n\\nfunction drawPoint(ctx, {x, y}, style=\\\"red\\\"){\\n    ctx.beginPath();\\n    ctx.arc(x, y, 3, 0, 2 * Math.PI, false);        // функция для отрисовки точек для кривых Безье и сплайнов\\n    ctx.fillStyle = style;\\n    ctx.fill();\\n}\\n\\n\\nfunction bezie4(ctx, p1, p2, p3, p4) {\\n    drawPoint(ctx, p1, \\\"orange\\\");\\n    drawPoint(ctx, p2, \\\"orange\\\");\\n    drawPoint(ctx, p3, \\\"orange\\\");\\n    drawPoint(ctx, p4, \\\"orange\\\");\\n\\n    ctx.strokeStyle = \\\"orange\\\";\\n    let x = p1.x;\\n    y = p1.y;\\n    let t = 0;\\n    ctx.beginPath();\\n    ctx.moveTo(x, y);\\n\\n    while (t <= 1) {\\n        x = (1 - t) * (1 - t) * (1 - t) * p1.x + 3 * t * (1 - t) * (1 - t) * p2.x + 3 * t * t * (1 - t) * p3.x + t * t * t * p4.x;\\n        y = (1 - t) * (1 - t) * (1 - t) * p1.y + 3 * t * (1 - t) * (1 - t) * p2.y + 3 * t * t * (1 - t) * p3.y + t * t * t * p4.y;\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n    ctx.stroke();\\n}\\n\\n\\nfunction bezie3(ctx, p1, p2, p3){\\n\\n    drawPoint(ctx, p1);\\n    drawPoint(ctx, p2);\\n    drawPoint(ctx, p3);\\n\\n    ctx.strokeStyle = \\\"red\\\";\\n    let x = p1.x;\\n        y = p1.y;\\n    let t = 0;\\n    ctx.beginPath();\\n    ctx.moveTo(x, y);\\n\\n    while (t <= 1) {\\n        x = (1 - t) * (1 - t) * p1.x + 2 * t * (1 - t) * p2.x + t * t * p3.x;\\n        y = (1 - t) * (1 - t) * p1.y + 2 * t * (1 - t) * p2.y + t * t * p3.y;\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n    ctx.stroke();\\n}\\n\\n\\nfunction bezie2(ctx, p1, p2) {\\n\\n    drawPoint(ctx, p1, \\\"blue\\\");\\n    drawPoint(ctx, p2, \\\"blue\\\");\\n\\n    ctx.strokeStyle = \\\"blue\\\";\\n\\n    let x = p1.x;\\n    y = p1.y;\\n    let t = 0;\\n    ctx.beginPath();\\n    ctx.moveTo(x, y);\\n\\n    while (t <= 1) {\\n        x = (1 - t) * p1.x + t * p2.x;\\n        y = (1 - t) * p1.y + t * p2.y;\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n    ctx.stroke();\\n\\n}\\n\\nfunction figure(ctx, center, k=10){\\n    let x = center.x + k * 6.2 * (Math.cos(0) - Math.cos(0) / 3.1),\\n        y = center.y + k * 6.2 * (Math.sin(0) - Math.sin(0) / 3.1);\\n\\n    ctx.strokeStyle = \\\"brown\\\";\\n\\n    let t = 0;\\n\\n    ctx.beginPath();\\n    ctx.moveTo(x, y);\\n\\n    while (t <= 20 * Math.PI){\\n        x = center.x + k * 6.2 * (Math.cos(t) - Math.cos(3.1 * t) / 3.1);\\n        y = center.y + k * 6.2 * (Math.sin(t) - Math.sin(3.1 * t) / 3.1);\\n        ctx.lineTo(x, y);\\n        t += 0.01;\\n    }\\n\\n    ctx.stroke();\\n\\n}\\n\\nfunction calcCoef(points, i){\\n\\n    let a3 = (-points[i - 1].x + 3 * points[i].x - 3 * points[i + 1].x + points[i + 2].x) / 6,\\n            a2 = (points[i - 1].x - 2 * points[i].x + points[i + 1].x) / 2,\\n            a1 = (-points[i - 1].x + points[i + 1].x) / 2,\\n            a0 = (points[i - 1].x + 4 * points[i].x + points[i + 1].x) / 6;\\n    let b3 = (-points[i - 1].y + 3 * points[i].y - 3 * points[i + 1].y + points[i + 2].y) / 6,\\n            b2 = (points[i - 1].y - 2 * points[i].y + points[i + 1].y) / 2,\\n            b1 = (-points[i - 1].y + points[i + 1].y) / 2,\\n            b0 = (points[i - 1].y + 4 * points[i].y + points[i + 1].y) / 6;\\n\\n    return {a: [a0, a1, a2, a3], b: [b0, b1, b2, b3]}\\n}\\n\\nfunction spline(ctx, points){\\n    for(let i = 0; i < points.length; i++){\\n        drawPoint(ctx, points[i], \\\"black\\\");\\n    }\\n\\n    if(points.length <= 4){\\n        if(points.length == 4) bezie4(ctx, ...points);\\n        if(points.length == 3) bezie3(ctx, ...points);\\n        if(points.length == 2) bezie2(ctx, ...points);\\n        return;\\n    }\\n\\n    let t = 0, i = 1;\\n    let coeff = calcCoef(points, i);\\n    let a = coeff.a, b = coeff.b;\\n    let x = ((a[3] * t + a[2]) * t + a[1]) * t + a[0],\\n    y = ((b[3] * t + b[2]) * t + b[1]) * t + b[0];\\n\\n    ctx.beginPath();\\n    ctx.strokeStyle = \\\"black\\\";\\n    ctx.moveTo(x, y);\\n\\n    for(; i <= points.length - 3; i++){\\n        coeff = calcCoef(points, i);\\n        a = coeff.a;\\n        b = coeff.b;\\n        while(t <= 1){\\n            x = ((a[3] * t + a[2]) * t + a[1]) * t + a[0];\\n            y = ((b[3] * t + b[2]) * t + b[1]) * t + b[0];\\n            t += 0.01;\\n            ctx.lineTo(x, y);\\n        }\\n        t = 0;\\n    }\\n    ctx.stroke();\\n}\\n\\ncircle(circleCtx, { x: 100, y: 100}, 60);\\nellips(ellipsCtx, { x: 100, y: 100 }, 70, 30);\\nbezie4(bezie2Ctx, { x: 50, y: 160 }, { x: 90, y: 60 }, { x: 130, y: 80 }, { x: 150, y: 140 });\\nbezie3(bezie3Ctx, { x: 40, y: 160 }, { x: 100, y: 40 }, { x: 160, y: 160 });\\nbezie2(bezie4Ctx, { x: 170, y: 150 }, { x: 30, y: 45 });\\nfigure(splineCtx, {x: 100, y: 100} );\\nspline(figureCtx, [{ x: 10, y: 160 }, { x: 10, y: 70 }, { x: 70, y: 20 }, {x: 120, y: 20}, {x: 180, y: 70}, {x: 180, y: 160}]);\\n\",\"html_pre_processor\":\"none\",\"css_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"html_classes\":\"\",\"css_starter\":\"neither\",\"js_library\":null,\"created_at\":\"2024-11-12T19:29:07.234Z\",\"updated_at\":\"2024-11-12T19:29:07.234Z\",\"title\":\"Untitled\",\"description\":\"\",\"slug_hash\":\"vYobxXy\",\"head\":\"\",\"private\":false,\"has_animation\":false,\"team_id\":0,\"css_prefix\":\"neither\",\"template\":false,\"parent_id\":0,\"comments_count\":0,\"custom_screenshot_filename\":null,\"loves_count\":0,\"pick\":false,\"popularity\":1,\"views_count\":5,\"pick_visible_at\":null,\"cpid\":\"019321d9-e0a2-70da-b70a-1a44cf1981b4\",\"is_new_editor_pen\":false,\"access\":\"Public\",\"pen_hash\":null}","__processorsMap":{"autoprefixer":"autoprefixer-10","babel":"babel-7","coffeescript":"coffeescript-2","format-1":"format-1","flutter":"flutter-1","haml":"haml-4","less":"less-3","lint-1":"lint-1","livescript":"livescript-1","markdown":"markdown-11","postcss":"postcss-7","pug":"pug-2","sass":"sass-1","scss":"sass-1","sass-ruby-3":"sass-ruby-3","sass-ruby-compass-3":"sass-ruby-compass-3","slim":"slim-3","stylus":"stylus-0","typescript":"typescript-4","vue":"vue-2","vue3":"vue-3"},"__favicon_mask_icon":"https://cpwebassets.codepen.io/assets/favicon/logo-pin-b4b4269c16397ad2f0f7a01bcdf513a1994f4c94b8af2f191c09eb0d601762b1.svg","__favicon_shortcut_icon":"https://cpwebassets.codepen.io/assets/favicon/favicon-aec34940fbc1a6e787974dcd360f2c6b63348d4b1f4e06c77743096d55480f33.ico","__path_to_iframe_console_runner":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeConsoleRunner-6d8bf8b4b479137260842506acbb12717dace0823c023e08b96360e60b0840d9.js","__path_to_iframe_refresh_css":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRefreshCSS-44fe83e49b63affec96918c9af88c0d80b209a862cf87ac46bc933074b8c557d.js","__path_to_iframe_runtime_errors":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRuntimeErrors-4f205f2c14e769b448bcf477de2938c681660d5038bc464e3700256713ebe261.js","__path_to_processor_worker":"https://cpwebassets.codepen.io/assets/packs/router.js","__path_to_stop_execution_on_timeout":"https://cpwebassets.codepen.io/assets/common/stopExecutionOnTimeout-2c7831bb44f98c1391d6a4ffda0e1fd302503391ca806e7fcc7b9b87197aec26.js","__pen_normalize_css_url":"https://public.codepenassets.com/css/normalize-5.0.0.min.css","__pen_prefix_free_url":"https://public.codepenassets.com/js/prefixfree-1.0.7.min.js","__pen_reset_css_url":"https://public.codepenassets.com/css/reset-2.0.min.css"}