From 0422ae0cf873e2ee86a84771ce70d8884c3200bd Mon Sep 17 00:00:00 2001
From: rgeorgi <russellgeorgi@gmail.com>
Date: Fri, 27 Aug 2021 19:17:52 -0700
Subject: [PATCH] Added the rest of the files

---
 circularPendulum.html | 168 ++++++++++++++++++++++++++++++++++++++++++
 exercise1-7.html      | 151 +++++++++++++++++++++++++++++++++++++
 2 files changed, 319 insertions(+)
 create mode 100644 circularPendulum.html
 create mode 100644 exercise1-7.html
diff --git a/circularPendulum.html b/circularPendulum.html
new file mode 100644
index 0000000..cd79cf4
--- /dev/null
+++ b/circularPendulum.html
@@ -0,0 +1,168 @@
+<!--
+    This work is licensed under CC BY-NC-ND 4.0            
+    Link to license: http://creativecommons.org/licenses/by-nc-nd/4.0/
+    Attribute to Russell Georgi
+-->
+<html>
+    <head>
+        <title>
+            Circular Pendulum
+        </title>
+        <style>
+            html, body {
+                width:  100%;
+                height: 100%;
+                margin: 0px;
+                border: 0;
+                overflow: hidden;
+                display: block;
+            }
+
+            canvas {
+                position: absolute;
+            }
+
+            .greenSlider {
+                -webkit-appearance: none;
+                border-radius: 5px;
+                height: 10px;
+                background: #d3d3d3;
+                outline: none;
+                opacity: 0.7;
+                -webkit-transition: .2s;
+                transition: opacity .2s;
+
+            }
+
+            .greenSlider::-webkit-slider-thumb {
+                -webkit-appearance: none;
+                appearance: none;
+                background: #66ff77;
+                border-radius: 50%;
+                width: 15px;
+                height: 15px;
+                cursor: pointer;
+            }
+
+            .greenSlider::-moz-range-thumb {
+                background: #66ff77;
+                border-radius: 50%;
+                width: 15px;
+                height: 15px;
+                cursor: pointer;
+            }
+        </style>
+    </head>
+    <body>       
+        <canvas id="myCanvas" width="1" height="1" style="border:1px solid #ffffff;">
+        Your browser does not support the HTML5 canvas tag.</canvas>
+        <div class="slidecontainer">
+            <t>Theta</t>
+            <input type="range" min="0.01" max="1.57" value="0.52" step="0.01" class="greenSlider" id="wRSlider">
+        </div>
+        
+        <script>
+        var c = document.getElementById("myCanvas");
+        var ctx = c.getContext("2d");
+        c.width = window.innerWidth;
+        c.height = window.innerHeight;
+        //Time step
+        var dt = 0.01;
+        var t = 0;
+        var l = 100;
+        var theta = 0.52;
+        var w = Math.sqrt(980 / (l * Math.cos(theta)));
+        var cTwo = 0.2;
+        //Relative position of canvas
+        var xPos = 0;
+        var yPos = 70;
+        //Moves and scales canvas
+        ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2)
+        ctx.scale(2, -2);
+
+        function fnx(x, y, z)
+        {
+            return (x + y) / Math.SQRT2;
+        }
+
+        function fny(x, y, z)
+        {
+            return z + cTwo * (y - x);
+        }
+
+        wRSlider.oninput = function()
+        {
+            theta = this.value;
+            w = Math.sqrt(980 / (l * Math.cos(theta)));
+        }
+
+        function Clear(ctx)
+        {
+            ctx.clearRect(-c.width, -c.height, c.width * 2, c.height * 2);
+        }
+
+        function Update()
+        {
+            Clear(ctx);
+            Draw();
+            t += dt;
+            setTimeout(Update, 1);
+        }
+
+        function Reset()
+        {
+            t = 0;
+            rp = 0;
+            thetap = 0;
+            theta = Math.PI / 18;
+            r = 100;
+        }
+
+        function Draw()
+        {
+            ctx.beginPath();
+            ctx.moveTo(xPos + fnx(0, 0, 0), yPos + fny(0, 0, 0));
+            ctx.lineTo(
+                xPos + fnx(l * Math.sin(theta) * Math.cos(t * w), - l * Math.sin(theta) * Math.sin(t * w), - l * Math.cos(theta)),
+                yPos + fny(l * Math.sin(theta) * Math.cos(t * w), - l * Math.sin(theta) * Math.sin(t * w), - l * Math.cos(theta))
+            );
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.arc(
+                xPos + fnx(l * Math.sin(theta) * Math.cos(t * w), - l * Math.sin(theta) * Math.sin(t * w), - l * Math.cos(theta)), 
+                yPos + fny(l * Math.sin(theta) * Math.cos(t * w), - l * Math.sin(theta) * Math.sin(t * w), - l * Math.cos(theta)), 
+                5, 0, Math.PI * 2
+            );
+            ctx.fill();
+            iStep = Math.PI / 100;
+            ctx.beginPath();
+            ctx.moveTo(
+                xPos + fnx(l * Math.sin(theta) * Math.cos(0), - l * Math.sin(theta) * Math.sin(0), - l * Math.cos(theta)),
+                yPos + fny(l * Math.sin(theta) * Math.cos(0), - l * Math.sin(theta) * Math.sin(0), - l * Math.cos(theta))
+            );
+            for (i = 0; i <= Math.PI * 2; i += iStep)
+            {
+                ctx.lineTo(
+                    xPos + fnx(l * Math.sin(theta) * Math.cos(i), - l * Math.sin(theta) * Math.sin(i), - l * Math.cos(theta)),
+                    yPos + fny(l * Math.sin(theta) * Math.cos(i), - l * Math.sin(theta) * Math.sin(i), - l * Math.cos(theta))
+                );
+            }
+            ctx.stroke();
+        }
+
+
+        window.addEventListener('resize', function(event) {
+            c.width = window.innerWidth;
+            c.height = window.innerHeight;
+            ctx.translate(c.width / 2, c.height / 2);
+            ctx.scale(2, -2);
+        }, true);
+
+        Update();
+
+        </script>
+    </body>
+    <p xmlns:cc="http://creativecommons.org/ns#" style="font-size: 1vw; bottom: 0px; position: absolute;">
+        This work is licensed under 
+        <a href="http://creativecommons.org/licenses/by-nc-nd/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-NC-ND 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nd.svg?ref=chooser-v1"></a></p>
+</html>
\ No newline at end of file
diff --git a/exercise1-7.html b/exercise1-7.html
new file mode 100644
index 0000000..2a77b89
--- /dev/null
+++ b/exercise1-7.html
@@ -0,0 +1,151 @@
+<!--
+    This work is licensed under CC BY-NC-ND 4.0            
+    Link to license: http://creativecommons.org/licenses/by-nc-nd/4.0/
+    Attribute to Russell Georgi
+-->
+<html>
+    <head>
+        <title>
+            Exercise 1-7
+        </title>
+        <style>
+            html, body {
+                width:  100%;
+                height: 100%;
+                margin: 0px;
+                border: 0;
+                overflow: hidden;
+                display: block;
+            }
+
+            canvas {
+                position: absolute;
+            }
+
+            t {
+                position: absolute;
+                font-size: 75px;
+                left: 5%;
+                top: 5%;
+            }
+        </style>
+    </head>
+    <body>       
+        <canvas id="myCanvas" width="1" height="1" style="border:1px solid #ffffff;">
+        Your browser does not support the HTML5 canvas tag.</canvas>
+        <t id="time">0</t>
+        
+        <script>
+        var c = document.getElementById("myCanvas");
+        var ctx = c.getContext("2d");
+        c.width = window.innerWidth;
+        c.height = window.innerHeight;
+        //Time step
+        var dt = 0.01;
+        var t = 0;
+        var g = 980;
+        var lx = 200;
+        var ly = 200;
+        var pulleyR = 2;
+        var r = 100;
+        var rp = 0;
+        var theta = Math.PI / 18;
+        var thetap = 0;
+        //Relative position of canvas
+        var xPos = 0;
+        var yPos = 70;
+        //Moves and scales canvas
+        ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2)
+        ctx.scale(2, -2);
+
+        function Clear(ctx)
+        {
+            ctx.clearRect(-c.width, -c.height, c.width * 2, c.height * 2);
+        }
+
+        function Update()
+        {
+            Clear(ctx);
+            Draw();
+            t += dt;
+            
+            if (t == 0)
+            {
+                console.log("zero");
+                rp = 0;
+                thetap = 0;
+                theta = Math.PI / 18;
+                r = 100;
+            }
+            if (t >= 0)
+            {
+                document.getElementById("time").textContent = t.toFixed(2) + " seconds";
+                console.log("greater");
+                rp += (dt / 2) * ((r * thetap * thetap) - g * (1 - Math.cos(theta)));
+                r += rp * dt;
+                thetap += dt * (-(2 * rp * thetap / r) - (g * Math.sin(theta) / r));
+                theta += thetap * dt;
+            }
+            if (r >= 200)
+            {
+                console.log(t);
+                t = -1000;
+                setTimeout(Reset, 2000);
+                r = 199.99;
+            }
+            setTimeout(Update, 1);
+        }
+
+        function Reset()
+        {
+            t = 0;
+            rp = 0;
+            thetap = 0;
+            theta = Math.PI / 18;
+            r = 100;
+        }
+
+        function Draw()
+        {
+            ctx.beginPath();
+            ctx.moveTo(xPos + lx / 2, yPos + pulleyR);
+            ctx.lineTo(xPos - lx / 2, yPos + pulleyR);
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.arc(xPos + lx / 2, yPos, pulleyR, 0, Math.PI * 2);
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.arc(xPos - lx / 2, yPos, pulleyR, 0, Math.PI * 2);
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.moveTo(xPos + lx / 2 + pulleyR, yPos);
+            ctx.lineTo(xPos + lx / 2 + pulleyR + r * Math.sin(theta), yPos - r * Math.cos(theta));
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.moveTo(xPos - lx / 2 - pulleyR, yPos);
+            ctx.lineTo(xPos - lx / 2 - pulleyR, yPos - (250 - r));
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.arc(xPos + lx / 2 + pulleyR + r * Math.sin(theta), yPos - r * Math.cos(theta), 5, 0, Math.PI * 2);
+            ctx.fill();
+            ctx.beginPath();
+            ctx.arc(xPos - lx / 2 - pulleyR, yPos - (250 - r), 5, 0, Math.PI * 2);
+            ctx.fill();
+        }
+
+
+        window.addEventListener('resize', function(event) {
+            c.width = window.innerWidth;
+            c.height = window.innerHeight;
+            ctx.translate(c.width / 2, c.height / 2);
+            ctx.scale(2, -2);
+        }, true);
+
+        Update();
+
+        </script>
+    </body>
+    <p xmlns:cc="http://creativecommons.org/ns#" style="font-size: 1vw; bottom: 0px; position: absolute;">
+        This work is licensed under 
+        <a href="http://creativecommons.org/licenses/by-nc-nd/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-NC-ND 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nd.svg?ref=chooser-v1"></a></p>
+</html>
\ No newline at end of file
