this is my project.<\/p>\n
<\/p>\n\n\n\n
<\/p><\/iframe><pre class=\"language-javascript\"><code class=\"p5_editor language-javascript\">var nPoints = 400;\n\nfunction setup() {\n createCanvas(400, 400); \n}\n\n\nfunction draw() {\n background(0);\n \n \/\/ draw the curve\n push();\n translate(width\/2, height\/2);\n drawEpitrochoidCurve();\n pop();\n\n push();\n translate(width\/2, height\/2-20)\n drawCardioidCurve();\n pop();\n}\n\n\/\/--------------------------------------------------\nfunction drawEpitrochoidCurve() {\n \/\/ Epicycloid:\n \/\/ http:\/\/mathworld.wolfram.com\/Epicycloid.html\n noFill();\n strokeWeight(1);\n\n \/\/change color \n if (mouseX< width\/2) {\n stroke(0, 50, 233);\n } else {\n stroke(81, 211, 255);\n }\n\n var x = constrain(mouseX, 0, width);\n var y = constrain(mouseY, 0, height);\n var a = map(x, 0, width, 50, 150);\n var b = map(y, 0, height, 1, 6);\n var h = constrain(mouseY, 50, 90);\n \n \/\/draw Epicycloid\n beginShape();\n for (var i = 0; i < nPoints; i++) {\n var t = map(i, 0, nPoints, 0, TWO_PI);\n \n x = (a + b) * cos(t) - h * cos(t * (a + b) \/ b);\n y = (a + b) * sin(t) - h * sin(t * (a + b) \/ b);\n vertex(x, y);\n }\n endShape(CLOSE);\n \n}\n\n\n\/\/--------------------------------------------------\nfunction drawCardioidCurve() {\n \/\/Cardioid\n \/\/ https:\/\/mathworld.wolfram.com\/Cardioid.html\n push();\n translate(x, y);\n rotate(radians(-90))\n var x = constrain(mouseX, 0, width);\n var y = constrain(mouseY, 0, height);\n var a = map(x, 0, width, 20, 80);\n var b = a\/2;\n \n \/\/change color\n if (mouseY > height\/2) {\n fill(233, 50, 50, 200);\n } else {\n fill(169, 22, 22, 200);\n }\n\n \/\/draw cardioid\n strokeWeight(1)\n stroke(244, 82, 255);\n beginShape();\n for (var i = 0; i < nPoints; i++) {\n var t = map(i, 0, nPoints, 0, TWO_PI);\n\n x = a*cos(t)*(1-cos(t));\n y = a*sin(t)*(1-cos(t));\n vertex(x, y);\n }\n endShape(CLOSE);\n pop();\n \n}\n\n<\/code><\/pre><\/div><\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p>this is my project. sketch var nPoints = 400; function setup() { createCanvas(400, 400); } function draw() { background(0); \/\/ draw the curve push(); translate(width\/2, height\/2); drawEpitrochoidCurve(); pop(); push(); translate(width\/2, height\/2-20) drawCardioidCurve(); pop(); } \/\/————————————————– function drawEpitrochoidCurve() { \/\/ Epicycloid: \/\/ http:\/\/mathworld.wolfram.com\/Epicycloid.html noFill(); strokeWeight(1); \/\/change color if (mouseX< width\/2) { stroke(0, 50, 233); } else … <a href=\"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/2022\/10\/15\/74537\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> “Project 07”<\/span><\/a><\/p>\n","protected":false},"author":777,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[108,55],"tags":[],"_links":{"self":[{"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/posts\/74537"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/users\/777"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/comments?post=74537"}],"version-history":[{"count":6,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/posts\/74537\/revisions"}],"predecessor-version":[{"id":74548,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/posts\/74537\/revisions\/74548"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/media?parent=74537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/categories?post=74537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/15-104\/f2022\/wp-json\/wp\/v2\/tags?post=74537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}