JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/3.0.2/pixi.min.js"></script>

JavaScript

function BulgeFilter() {
    PIXI.filters.AbstractFilter.call(this,
                                     // vertex shader
                                     null,
                                     // fragment shader
                                     [
                                         'precision mediump float;',
                                         'uniform vec2 center;',
                                         'uniform float radius;',
                                         'uniform float strength;',
                                         
                                         'void main() {',
                                         'vec2 coord = center;',
                                         'float distance = length(coord);',
                                         'if (distance < radius) {',
                                         'float percent = distance / radius;',
                                         'if (strength > 0.0) {',
                                         'coord *= mix(1.0, smoothstep(0.0, radius / distance, percent), strength * 0.75);',
                                         '} else {',
                                         'coord *= mix(1.0, pow(percent, 1.0 + strength * 0.75) * radius / distance, 1.0 - percent);',
                                         '}',
                                         '}',
                                         '}'
                                     ].join('\n'),
                                     // custom uniforms
                                     {
                                         radius: {type: '1f', value:10},
                                         strength: {type: '1f', value:5},
                                         center:   {type: '2fv', value:[100,100]}
                                     }
                                    );
};

BulgeFilter.prototype =...