From 5d42bae5ee817683ebdc63d911427bf2a88bf19f Mon Sep 17 00:00:00 2001
From: Elias Almqvist <elalmqvist@gmail.com>
Date: Fri, 29 Mar 2024 17:49:48 +0100
Subject: [PATCH] Stuff

---
 src/app/page.tsx                    |  6 +--
 src/components/3d/curves/lorentz.ts |  4 +-
 src/components/3d/curves/sphere.ts  | 82 +++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 5 deletions(-)
 create mode 100644 src/components/3d/curves/sphere.ts

diff --git a/src/app/page.tsx b/src/app/page.tsx
index b2d85ce..409bcee 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,4 +1,4 @@
-import LorentzCurve from "@/components/3d/curves/lorentz";
+import SphereCurve from "@/components/3d/curves/sphere";
 import RenderedSection from "@/components/3d/renderedsection";
 
 export default function Home() {
@@ -6,8 +6,8 @@ export default function Home() {
     <>
       <RenderedSection
         id="about"
-        curve={LorentzCurve}
-        className="relative w-full h-full px-4 md:px-8"
+        curve={SphereCurve}
+        className="relative w-full h-full px-4 md:px-8 max-w-screen-2xl"
         curveClassname="w-full h-[calc(100vh-3.5rem)]"
       >
         <h1 className="text-2xl">Hello, I am a </h1>
diff --git a/src/components/3d/curves/lorentz.ts b/src/components/3d/curves/lorentz.ts
index 50c3ea8..bf0d179 100644
--- a/src/components/3d/curves/lorentz.ts
+++ b/src/components/3d/curves/lorentz.ts
@@ -3,7 +3,7 @@
 import * as THREE from "three";
 import { CurveProps } from "../renderer";
 
-const maxParticles = 10000;
+const maxParticles = 20000;
 
 const startScatter = 0.1;
 
@@ -67,7 +67,7 @@ const update = (pc: THREE.Points<THREE.BufferGeometry>, group: THREE.Group) => {
 const LorentzCurve: CurveProps = {
   func: { init: init, update: update },
   cam: {
-    pos: new THREE.Vector3(1, 0, 18).multiplyScalar(2),
+    pos: new THREE.Vector3(8, 8, 18).multiplyScalar(2),
     rotation: new THREE.Vector3(0, 0, 180),
   },
   particles: {
diff --git a/src/components/3d/curves/sphere.ts b/src/components/3d/curves/sphere.ts
new file mode 100644
index 0000000..63e8d7e
--- /dev/null
+++ b/src/components/3d/curves/sphere.ts
@@ -0,0 +1,82 @@
+"use client";
+
+import * as THREE from "three";
+import { CurveProps } from "../renderer";
+
+const maxParticles = 20000;
+
+const startScatter = 0.1;
+
+const init = () => {
+  var arrayCurve = [];
+
+  var x = 0.01,
+    y = 0.01,
+    z = 0.01;
+  var a = 0.9;
+  var b = 3.4;
+  var f = 9.9;
+  var g = 1;
+  var t = 0.001;
+  for (var i = 0; i < maxParticles; i++) {
+    x = x - t * a * x + t * y * y - t * z * z + t * a * f;
+    y = y - t * y + t * x * y - t * b * x * z + t * g;
+    z = z - t * z + t * b * x * y + t * x * z;
+    arrayCurve.push(
+      new THREE.Vector3(x, y, z).multiplyScalar(
+        1 - startScatter / 2 + Math.random() * startScatter,
+      ),
+    );
+  }
+  return arrayCurve;
+};
+
+const update = (pc: THREE.Points<THREE.BufferGeometry>, group: THREE.Group) => {
+  //Varying the points on each frame
+  // step += 0.01;
+  var geometry = pc.geometry;
+  var a = 0.9; //+ Math.random() * .2;
+  var b = 3.4; //+ Math.random() * .1;
+  var f = 9.9; //+ Math.random() * .2;
+  var g = 1; //+ Math.random() * .1;
+  var t = 0.001;
+
+  var positions = geometry.attributes.position;
+  const numPoints = positions.array.length / 3;
+
+  for (let i = 0; i < numPoints; i++) {
+    let x = positions.getX(i),
+      y = positions.getY(i),
+      z = positions.getZ(i);
+    positions.setXYZ(
+      i,
+      x - t * a * x + t * y * y - t * z * z + t * a * f,
+      y - t * y + t * x * y - t * b * x * z + t * g,
+      z - t * z + t * b * x * y + t * x * z,
+    );
+  }
+  positions.needsUpdate = true;
+
+  // TODO: remove
+  // group.rotation.x += 0.0005;
+  // group.rotation.y += 0.001;
+  // group.rotation.z -= 0.0005;
+};
+
+// INFO: Curve definition
+const SphereCurve = {
+  func: { init: init, update: update },
+  cam: {
+    pos: new THREE.Vector3(0, 0, 18).multiplyScalar(2),
+    rotation: new THREE.Vector3(0, 0, 180),
+  },
+  particles: {
+    max: maxParticles,
+    size: 0.1,
+    color: "#888",
+    darkcolor: "#444",
+    opacity: 0.4,
+  }, // 87a
+};
+
+export default SphereCurve;