diff options
Diffstat (limited to 'js/2pi.js')
| -rw-r--r-- | js/2pi.js | 27 |
1 files changed, 14 insertions, 13 deletions
@@ -27,7 +27,7 @@ function center() var centerX = 0; var centerY = 0; for (var i = 0; i < vertices.length; i++) - { + { centerX += vertices[i][0] / vertices.length; centerY += vertices[i][1] / vertices.length; } @@ -38,12 +38,12 @@ function twoPiApprox() { var o = center(); var c = circumference(); - + ellipseMode(CENTER); fill(0, 0, 200); noStroke(); ellipse(o[0], o[1], 5, 5); - + var avgR = 0; var minLocation; var maxLocation; @@ -51,9 +51,9 @@ function twoPiApprox() { var d = dist(vertices[i][0], vertices[i][1], o[0], o[1]); avgR += d / vertices.length; - + } - + stroke(0, 255, 0); noFill(); line(o[0], o[1], o[0]+avgR, o[1]); @@ -61,10 +61,10 @@ function twoPiApprox() ellipse(o[0], o[1], 2*avgR, 2*avgR); stroke(255, 200, 0); ellipse(o[0], o[1], c/PI, c/PI); - - + + return c/(2*avgR); - + } function setup() @@ -90,11 +90,12 @@ function calculate() { percentError = 100*(PI/avgPi - 1); } - var div = document.getElementById("info"); - div.innerHTML = "Your approximation | True value<br> 2π = " + 2 * avgPi + " | " + TWO_PI + "<br> π = " + - + avgPi + " | " + PI + ".<br>" + percentError + "% error.<br>" + $("#info").html("<div class='col-xs-12 col-sm-8 col-md-6 col-lg-4'>" + + "<table class='table table-bordered table-hover'> <tr><th></th><th>Your approximation</th><th>True value</th></tr><tr><td>2π</td><td>" + 2 * avgPi + + "</td><td>" + TWO_PI + "</td></tr><tr><td>π</td><td>" + + + avgPi + "</td><td>" + PI + "</table>" + percentError + "% error.<br>" + "The blue dot is the center of your shape. The green line is the average radius of the shape.<br>" + "The red circle is a circle with the same radius as your shape, and the orange circle is a<br>" + "circle with the same circumference as your shape. The closer they are, the better your<br>" - + "approximation of π"; -}
\ No newline at end of file + + "approximation of π</div>"); +} |