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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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cedarcantab
Jul 18, 20224 min read
Understanding 2D Physics Engines with Phaser 3, Part 23.2: Constrained Dynamics: Contact Constraint
In the prior post started our exploration into the world of constraint solvers by looking at constraint functions. In this post we will...
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cedarcantab
Jul 17, 20228 min read
Understanding 2D Physics Engines with Phaser 3, Part 23.1: Constrained Dynamics: Introduction
Introduction In this post I start to look into the deep world of Constraints and Constraint Solvers. You will appreciate why I say deep,...
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cedarcantab
Jul 5, 20223 min read
Understanding 2D Physics Engines with Phaser 3, Part 22: Screen Space
In the prior post, we talked about the concepts of different frames of reference. Specifically, we talked about the local or model space,...
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cedarcantab
Jul 4, 20225 min read
Understanding 2D Physics Engines with Phaser 3, Part 21: Local (Model) space vs World space
Local vs World space In this post I document the introduction of the concept of local space vs world space. Frankly, the concepts are not...
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cedarcantab
Jul 3, 20222 min read
Understanding 2D Physics Engines with Phaser 3, Part 20: Clipping Method
Extending the Clipping Method to deal with Circles In the prior post we successfully completed the implementation of the clipping method...
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cedarcantab
Jul 1, 202210 min read
Understanding 2D Physics Engines with Phaser 3, Part 19: Clipping Method
Finding Contact Points of overlapping Convex Polygons using the Clipping Method The separating axis theorem can tell us whether a polygon...
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cedarcantab
Jun 30, 20226 min read
Understanding 2D Physics Engines with Phaser 3, Part 18: Collision Response with Rotation
Rectange to Rectangle Collision Response with Rotation In a prior post we looked at how to identify the contact point of two colliding...
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cedarcantab
Jun 20, 20225 min read
Understanding 2D Physics Engines with Phaser 3, Part 17.2: Collision Response with Rotation
Capsule to Capsule collision response with rotation In the previous post I looked into how we can identify contact point(s) when two...
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cedarcantab
Jun 19, 20223 min read
Understanding 2D Physics Engines with Phaser 3, Part 17.1: Collision Response with Rotation
Capsule to Capsule Collision response with Rotation Having dealt with the concepts of center of mass and mass moment of inertia, we...
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cedarcantab
Jun 12, 20226 min read
2D Raycasting using Phaser 3, Part 4
Exploring the Geom.Intersects.GetLineToPolygon method In my exploration of 2D raycasting using Phaser 3, I created simple 2D raycasters...
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cedarcantab
Jun 10, 20221 min read
Angular Momentum and Impulse
Momentum and Impulse Linear Momentum and Linear Impulse Linear momentum, typically represented by letter p - is proportional to mass m...
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cedarcantab
Jun 9, 20222 min read
Mass Moment of Inertia: Arbitrary Triangle
Momentum and Impulse In this post I try to explain how the moment of inertia of an arbitrary triangle may be derived (full disclosure:...
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cedarcantab
Jun 7, 20222 min read
Mass Moment of Inertia: Capsule
MMOI of a Capsule In this post we calculate the mmoi of a capsule. To calculate the mmoi of a capsule, we consider it as the sum of a...
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cedarcantab
Jun 6, 20222 min read
Mass Moment of Inertia: Rectangle
Before continuing our challenge to derive the mmoi for other shapes, I will introduce two important theorems that will help us as we deal...
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cedarcantab
Jun 5, 20224 min read
Mass Moment of Inertia (MMOI): Introduction
Angular Momentum, Moment of Inertia In prior posts we have discussed momentum, which we have assumed to be mass x velocity. In a world...
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cedarcantab
Jun 1, 20223 min read
Center of Mass of Lamina: Arbitrary Triangle
In the previous post we worked through the calculation of the centroid of an isosceles triangle. In this post we delve into the...
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cedarcantab
May 31, 20221 min read
Center of Mass of Lamina: Isosceles triangle
We will put the learnings of the previous post into practice by applying the principles to a triangle. Center of Mass of a Triangle We...
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cedarcantab
May 30, 20225 min read
Center of Mass and Centroid
In this first post (of what is likely to be a long series) I will delve into center of mass. Center of Mass Wikipedia defines center of...
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cedarcantab
May 28, 20228 min read
Sloped Tile Collision Detection in Phaser 3
Making Characters Climb Sloped Tiles After a long and tortuous journey I finally managed to get CozyPhysics engine to work with partial...
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cedarcantab
May 26, 202213 min read
GJK in Javascript, Part 1: Detect Overlap Between Polygons
Collision Detection using Gilbert-Johnson-Keerthi (GJK) algorithm Having looked at the Separating Axis Theorem (SAT), I look at another...
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