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+# ABOUT
+In this application, the Raymarching spheres have collision detection.
+This allows the spheres to be dispersed using the mouse.
+
+What we are doing is the same as the application we created before. However, the code is more sophisticated.
+https://github.com/nemutas/r3f-normal-color
+
+https://nemutas.github.io/r3f-water-drops/
+
+
+
+# Reference
+This is a technical document on Raymarching. They are all very easy to understand and are excellent documents.
+
+* [wgld.org](https://wgld.org/d/glsl/g008.html) - Japanese
+* [Inigo Quilez - articles](https://www.iquilezles.org/www/index.htm)
+* [Raymarching simple scene #48](https://www.youtube.com/watch?v=q2WcGi3Cr9w&t=6s)
+* [Live Coding and Alien Orb - Modeling & Shadows](https://www.youtube.com/watch?v=b0AayhCO7s8&t=416s)
+
+Physics simulation using use-cannon.
+
+* [BestServedBold Christmas Baubles](https://codesandbox.io/s/bestservedbold-christmas-baubles-zxpv7)
+
+# License
+
+This source code is not MIT License.
+
+❌ Commercial use is prohibited.
+❌ Redistribution is prohibited.
+❌ Diversion is prohibited.(Incorporate all of the code into the project, etc.)
+✅ You can look at the application and reproduce the representation.
+✅ You can use parts of the code.