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COZY COZY WORLD
I am an ordinary Japanese salaryman in his 50's.
The posts are mostly about my attempts at programming which I have taken up recently to maintain logical thinking.
And a bit about my travels around the country.
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Divide and Conquer convex hull algorithm
The Divide and Conquer Convex Hull Algorithm is a powerful method for finding the convex hull of a set of 2-dimensional points. Let’s...
cedarcantab
Mar 24, 20244 min read
Andrew's Monotone Chain convex hull algorithm
Andrew’s monotone chain convex hull algorithm is a method for constructing the convex hull of a set of 2-dimensional points. Let’s break...
cedarcantab
Mar 24, 20246 min read
Eulerian Fluid Simulator
var canvas = document.getElementById("myCanvas"); var c = canvas.getContext("2d"); canvas.width = window.innerWidth - 20; canvas.height =...
cedarcantab
Mar 24, 20249 min read
Double Density Relaxation
class Simulation{ constructor(){ this.particles = []; this.AMOUNT_PARTICLES = 2000; this.VELOCITY_DAMPING = 1; this.GRAVITY = new...
cedarcantab
Mar 24, 20242 min read
Hash based grid
class Particle{ constructor(position){ this.position = position; this.prevPosition = position; this.velocity = new Vector2(0,0);...
cedarcantab
Mar 24, 20243 min read
GJK - EPA
Simplex becomes a polytope when you start adding vertices to it. The Expanding Polytope Algorithm (EPA) is a method used in computational...
cedarcantab
Mar 24, 20246 min read
GJK in Javascript, Part 3: Baycentric Coordinates
class GJKResult { constructor() { this.collide = false; this.simplex = new Simplex(); } } const GJK_MAX_ITERATION = 20; // params b1,...
cedarcantab
Mar 24, 20243 min read
s2 Solver xpbd
Solver2d.h // SPDX-FileCopyrightText: 2024 Erin Catto // SPDX-License-Identifier: MIT #pragma once #include <stdint.h> typedef struct...
cedarcantab
Mar 21, 20248 min read
Least Squares Method
The least squares method is a mathematical technique used to find the best-fitting curve for a given set of data points. It aims to...
cedarcantab
Mar 21, 20242 min read
Newton's method
Newton’s Method for Nonlinear Equations Newton’s method is a powerful iterative algorithm used to find the roots (or solutions) of...
cedarcantab
Mar 20, 20243 min read
User Interaction in 3D World: Grabber
This is me trying to understand the code frmo this video https://youtu.be/iH_UgUb-LYM?si=-2cjlL4BFnEuZHaL A Ball to grab hold of //...
cedarcantab
Mar 19, 20243 min read
Soft Bunny
This is me trying to understand the code from this video https://youtu.be/uCaHXkS2cUg?si=MnitHLo52tBXjwic // ----------------------------...
cedarcantab
Mar 19, 20244 min read
Position Based Dynamics Bead on Wire
Demo Code from this video https://youtu.be/qISgdDhdCro?si=jXIUH6Uc5z494A_y class Bead { constructor(radius, mass, pos) { this.radius =...
cedarcantab
Mar 19, 20242 min read
LU Decomposition
LU decomposition algorithm, which is a powerful technique for solving systems of linear equations and other numerical problems. Here’s...
cedarcantab
Mar 17, 20242 min read
Jacobi method
The Jacobi method is an iterative algorithm used to find solutions for a system of linear equations. Let’s break it down: Problem Setup:...
cedarcantab
Mar 16, 20243 min read
Linear Equations: Gauss-Seidel
The Gauss-Seidel method is an iterative technique used to solve a system of linear equations. Here’s how it works: System of Equations:...
cedarcantab
Mar 16, 20243 min read
Blob Physics
https://www.gamedev.net/forums/topic/579014-blob-physics-tutorial/
cedarcantab
Mar 16, 20241 min read
Position Based Dynamics
class Vertex { constructor(world, body, x, y) { this.position = new Phaser.Math.Vector2(x,y); this.oldPosition = new...
cedarcantab
Mar 14, 20247 min read
Spring Model Soft body Physics
Inspired by this youtube video here In P5!!! by kraftpy class MassPoint { constructor(x, y, mass, radius, frictionCoeff){ this.pos =...
cedarcantab
Mar 14, 20244 min read
Buoyancy
<!DOCTYPE html> <html> <head> <title>Buoyancy demo - p2.js physics engine</title> <script src="../build/p2.js"></script> <script...
cedarcantab
Mar 14, 20242 min read
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