How to Code: Gravity
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Learn the basics behind creating a gravity based physics simulation using HTML5 canvas and JavaScript.
Gravity is a force that pulls objects towards a large body of mass (typically planets). This is easy to understand from a high level standpoint, but when it comes to translating this effect to code, we have to pay attention to the details. Technically, gravity is the accelerative speed added onto an object's velocity. If we continue to add a constant value (gravity) onto an object's velocity over time, the object's velocity will increase, thus creating the effect of acceleration / gravity.
Delve into the video to learn more about the intricacies behind gravity and code.
Video Git Repo:
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https://github.com/christopher4lis/ca...
Finished Project with Code:
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https://codepen.io/christopher4lis/pe...
Video Timeline:
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00:11 - Intro to Gravity: What is it? How do we translate it to code?
01:40 - Screencast portion begins (using git and setting up the project)
06:10 - Drawing the ball
09:13 - Adding velocity
11:19 - Adding gravity
13:42 - Adding friction
15:30 - Making a visually pleasing canvas piece using gravity (creating and animating multiple balls)
24:36 - Adding boundaries to the left and right hand sides of the screen
27:55 - Randomizing radii
28:38 - Randomizing colors
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