From 75fdcebf737687d4829a9a979a65eae794569841 Mon Sep 17 00:00:00 2001
From: Benjamin Kraft <benjamin.kraft@online.de>
Date: Wed, 6 Sep 2023 22:25:09 +0200
Subject: [PATCH] functionality for adding a single pendulum

---
 public/data/scripts/ts/manager.ts  | 29 ++++++++++++-----------------
 public/data/scripts/ts/pendulum.ts | 12 +++++++++---
 2 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/public/data/scripts/ts/manager.ts b/public/data/scripts/ts/manager.ts
index d413151..743739c 100644
--- a/public/data/scripts/ts/manager.ts
+++ b/public/data/scripts/ts/manager.ts
@@ -7,22 +7,7 @@ class Manager {
 
     playing = false;
 
-    static Size = 20;
-
-    constructor() {
-        p.colorMode(p.HSB, 100);
-        let count = 100;
-        for (let i = 0; i < count; i++){
-            let rad = i / count / 1e3 + p.PI * 1.05;
-            let hue = i / count * 100;
-            let color = p.color(hue, 100, 100);
-            this.pendula.push(
-                new Pendulum([1, 1, 1, 1, 1, 1, 1, 1], [50, 50, 50, 50, 50, 50, 50, 100 + i / count / 10000], color)
-            );
-        }
-        p.colorMode(p.RGB);
-
-    }
+    static Size = 200;
 
     init(){
         // @ts-ignore
@@ -71,7 +56,17 @@ class Manager {
             },
             methods: {
                 add() {
+                    if (this.multiple){
 
+                    } else {
+                        let color = p.color(this.color)
+                        let M = this.masses.slice(0, this.segmentCount);
+                        let L = this.lengths.slice(0, this.segmentCount);
+                        let newPendulum = new Pendulum(M, L, color, this.startAngle);
+                        manager.pendula.push(newPendulum);
+                    }
+                    p.colorMode(p.HSB, 100);
+                    p.colorMode(p.RGB);
                 },
                 deleteAll(){
                     if (confirm("Delete all pendulums?")){
@@ -107,7 +102,7 @@ class Manager {
 
     update(){
         if (this.playing) {
-            const h = this.timescale / Math.max(p.frameRate(), 1);
+            const h = this.timescale / Math.max(p.frameRate(), 30);
             this.pendula.forEach(p => p.update(h));
         }
     }
diff --git a/public/data/scripts/ts/pendulum.ts b/public/data/scripts/ts/pendulum.ts
index dd46338..9901c97 100644
--- a/public/data/scripts/ts/pendulum.ts
+++ b/public/data/scripts/ts/pendulum.ts
@@ -5,15 +5,16 @@ class Pendulum {
 
     size: number;
 
-    constructor(readonly M: number[], readonly L: number[], readonly color: p5.Color) {
+    constructor(readonly M: number[], readonly L: number[], readonly color: p5.Color, startAngle: number) {
         console.assert(M.length === L.length, M, L, "Masses and Lengths are not of equal length!");
 
         this.size = M.length;
 
+        startAngle *= Math.PI / 180;
+        let direction = new Vector(Math.sin(startAngle), Math.cos(startAngle));
         let currentPosition = new Vector(0, 0);
         for (let i = 0; i < this.size; i++){
-            let a = Math.sqrt(L[i] * L[i] / 2);
-            currentPosition.addC(-L[i], 0);
+            currentPosition.add(Vector.Mult(direction, L[i]));
             this.X.push(currentPosition.copy());
             this.V.push(new Vector(0, 0));
         }
@@ -78,13 +79,18 @@ class Pendulum {
         p.strokeWeight(1);
         p.fill(255);
 
+        let scale = p.height / Manager.Size;
         let p1 = new Vector(0, 0);
         for (let p2 of this.X){
+            p2 = p2.copy();
+            p2.mult(scale);
             p.line(p1.x, p1.y, p2.x, p2.y);
             p1 = p2.copy();
         }
 
         for (let p2 of this.X){
+            p2 = p2.copy();
+            p2.mult(scale);
             p.ellipse(p2.x, p2.y, 10, 10);
         }