From 481f911c8c1afaf72ee7e073c3ad97793a254723 Mon Sep 17 00:00:00 2001
From: Abdullaev Farkhodjon <45960476+fredsofdev@users.noreply.github.com>
Date: Tue, 12 Jul 2022 17:01:26 +0900
Subject: [PATCH 1/2] Create seriously.distortion.js

Distortion effect for security IP camera footage
---
 effects/seriously.distortion.js | 101 ++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 effects/seriously.distortion.js

diff --git a/effects/seriously.distortion.js b/effects/seriously.distortion.js
new file mode 100644
index 0000000..9fe0698
--- /dev/null
+++ b/effects/seriously.distortion.js
@@ -0,0 +1,101 @@
+(function (root, factory) {
+	'use strict';
+
+	if (typeof define === 'function' && define.amd) {
+		// AMD. Register as an anonymous module.
+		define(['seriously'], factory);
+	} else if (typeof exports === 'object') {
+		// Node/CommonJS
+		factory(require('seriously'));
+	} else {
+		if (!root.Seriously) {
+			root.Seriously = { plugin: function (name, opt) { this[name] = opt; } };
+		}
+		factory(root.Seriously);
+	}
+}(window, function (Seriously) {
+	'use strict';
+
+	Seriously.plugin('distortion', {
+			commonShader: true,
+			shader: function (inputs, shaderSource) {
+				shaderSource.vertex = [
+					
+					'precision highp float;',
+					
+					
+					'attribute vec3 aVertexPosition;',
+					
+					'attribute vec2 aTextureCoord;',
+					
+					'varying vec3 vPosition;',
+					'varying vec2 vTextureCoord;',
+					
+					'void main(void){',
+						'vPosition = aVertexPosition;',
+						'vTextureCoord = aTextureCoord;',
+					
+						'gl_Position = vec4(vPosition,1.0);',
+					'}',
+				].join('\n');
+				shaderSource.fragment = [
+					'precision highp float;',
+				
+					'uniform vec3 uLensS;',
+					'uniform vec2 uLensF;',
+
+					'uniform vec2 uFov;',
+
+					'uniform sampler2D source;',
+
+					'varying vec3 vPosition;',
+					'varying vec2 vTextureCoord;',
+
+					'vec2 GLCoord2TextureCoord(vec2 glCoord) {',
+					'	return glCoord  * vec2(1.0, -1.0)/ 2.0 + vec2(0.5, 0.5);',
+					'}',
+
+					'void main(void){',
+						'float scale = uLensS.z;',
+						'vec3 vPos = vPosition;',
+						'float Fx = uLensF.x;',
+						'float Fy = uLensF.y;',
+						'vec2 vMapping = vPos.xy;',
+						'vMapping.x = vMapping.x + ((pow(vPos.y, 2.0)/scale)*vPos.x/scale)*-Fx;',
+						'vMapping.y = vMapping.y + ((pow(vPos.x, 2.0)/scale)*vPos.y/scale)*-Fy;',
+						'vMapping = vMapping * uLensS.xy;',
+						'vMapping = GLCoord2TextureCoord(vMapping/scale);',
+						'vec4 texture = texture2D(source, vec2(vMapping.x, 1.0 - abs(vMapping.y)));',
+						'if(vMapping.x > 0.99 || vMapping.x < 0.01 || vMapping.y > 0.99 || vMapping.y < 0.01){',
+						'	texture = vec4(0.0, 0.0, 0.0, 1.0);',
+						'}',
+						'gl_FragColor = texture;',
+					'}'
+				].join('\n');
+				return shaderSource;
+			},
+			inPlace: true,
+			inputs: {
+				source: {
+					type: 'image',
+					uniform: 'source'					
+				},
+				uLensS: {
+					type: 'vector',
+					uniform: 'uLensS',
+					dimensions: 3,
+					defaultValue: [1.0, 1.0, 1.5]
+				},
+				uLensF: {
+					type: 'vector',
+					uniform: 'uLensF',
+					dimensions: 2,
+					defaultValue: [0.0, 0.0]
+				}
+
+				
+			},
+			title: 'distortion',
+			description: ''	
+	});
+}));

From c3a0f91a0fffb83f5b2d882657584467b66b086f Mon Sep 17 00:00:00 2001
From: Abdullaev Farkhodjon <45960476+fredsofdev@users.noreply.github.com>
Date: Tue, 12 Jul 2022 17:29:05 +0900
Subject: [PATCH 2/2] Update README.md

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index bd79a0f..9ea2bd3 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ Full documentation is in progress at the [wiki](https://github.com/brianchirls/S
 - Directional Blur
 - Displacement Map
 - Dither
+- Distortion
 - Edge Detect
 - Emboss
 - Exposure Adjust
@@ -115,4 +116,4 @@ Individual plugins may be licensed differently. Check source code comments.
 
 ## Credits
 
-Seriously.js is created and maintained by [Brian Chirls](http://chirls.com)
\ No newline at end of file
+Seriously.js is created and maintained by [Brian Chirls](http://chirls.com)