Coding Challenge #64.2: Inverse Kinematics

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Published on March 17, 2017 11:43:10 PM ● Video Link: https://www.youtube.com/watch?v=hbgDqyy8bIw

Duration: 36:45

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In this multi-part coding challenge, I demonstrate how to implement kinematics in Processing (Java). Code: https://thecodingtrain.com/challenges/64-kinematics

p5.js Web Editor Sketches:
🕹️ Kinematics - Part 1: https://editor.p5js.org/codingtrain/sketches/91Ys1PU7B
🕹️ Kinematics - Part 2: https://editor.p5js.org/codingtrain/sketches/CvGJFQPLa
🕹️ Kinematics - Part 3: https://editor.p5js.org/codingtrain/sketches/p8hH8INCv
🕹️ Kinematics - Part 4: https://editor.p5js.org/codingtrain/sketches/bNPjMWlwV

Other Parts of this Challenge:
📺 Part 1: Forward Kinematics: https://youtu.be/xXjRlEr7AGk
📺 Part 3: Inverse Kinematics - Fixed Point: https://youtu.be/RTc6i-7N3ms
📺 Part 4: Inverse Kinematics - Multiple: https://youtu.be/10st01Z0jxc

🎥 Previous video: https://youtu.be/JunJzIe0hEo?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
🎥 Next video: https://youtu.be/ZNH0MuQ51m4?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
🎥 All videos: https://www.youtube.com/playlist?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH

References:
🗄 Kinematics on Wikipedia: https://en.wikipedia.org/wiki/Kinematics

Videos:
🎥 Polar Coordinates: https://youtu.be/O5wjXoFrau4
🎥 Interactive Fish Aquarium Desktop Wallpaper: https://youtu.be/Inpo9tpUMwE
🎥 Coding Math on Youtube: https://www.youtube.com/user/codingmath
🔴 Livestream Archive: https://youtu.be/xtFu66DZrBw

Related Coding Challenges:
🚂 #3 The Snake Game: https://youtu.be/AaGK-fj-BAM
🚂 #111 Animated Sprites: https://youtu.be/3noMeuufLZY

Timestamps:
0:00 What is the difference between forward and inverse kinematics?
3:15 Let's Code!
4:15 Segment class
8:46 Have the segment follow the mouse
11:12 Use heading() to find the angle
13:17 Move the segment to the mouse
20:30 Add a connected segment
22:05 Segment 2 follows the mouse
23:15 Add a linked list
25:52 The last segement is the "tentacle"
27:28 Add a child
29:00 Overload the follow function
34:00 Map the index to the strokeWeight of each segment
36:00 Conclusion and suggestions for variations

Editing by Mathieu Blanchette
Animations by Jason Heglund
Music from Epidemic Sound

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🔗 p5.js: https://p5js.org
🔗 p5.js Web Editor: https://editor.p5js.org/
🔗 Processing: https://processing.org

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#forwardkinematics #inversekinematics #tentacleanimation #linkedlists #arrays #processing