---

/*{
	"CREDIT": "mojovideotech",
	"DESCRIPTION": "based on http://glslsandbox.com/e#42684.2",
	"CATEGORIES": [
		"Generator"
	],
	"INPUTS": [
		{
			"NAME": "scale",
			"TYPE": "float",
			"DEFAULT": 1.5,
			"MIN": 0.25,
			"MAX": 5
		},
		{
			"NAME": "rate",
			"TYPE": "float",
			"DEFAULT": 0.5,
			"MIN": -2,
			"MAX": 2
		},
		{
			"NAME": "loops",
			"TYPE": "float",
			"DEFAULT": 7,
			"MIN": 1,
			"MAX": 16
		},
		{
			"NAME": "phase",
			"TYPE": "float",
			"DEFAULT": 0.5,
			"MIN": 0.001,
			"MAX": 0.999
		},
		{
			"NAME": "rot",
			"TYPE": "bool",
			"DEFAULT": false
		},
		{
			"NAME": "sparse",
			"TYPE": "bool",
			"DEFAULT": true
		}
	]
}
*/

////////////////////////////////////////////////////////////
// TwistyColoredBars  by mojovideotech
//
// based on :
// Twisting Bars  by @hintz
// glslsandbox.com/\e#42684.4
//
// Creative Commons Attribution-NonCommercial-ShareAlike 3.0
////////////////////////////////////////////////////////////


void main()
{
	vec2 o = ((gl_FragCoord.xy - RENDERSIZE.xy/2.0)*scale)/RENDERSIZE.y;
	if (rot) o.xy = o.yx; 
	float T = TIME * rate, p = 0.5+floor(5.0*o.x), q;
	if (sparse) q = 0.4; 
		else q = 0.2; 
	o.x = mod(o.x, q) - 0.1;
	o.y+=p;
	vec4 s = 0.1*cos(1.6*vec4(0,1,2,3)+p*phase*T+sin(o.y*loops+p*loops+cos(T))),
	e = s.yzwx, 
	f = min(o.x-s,e-o.x);
	gl_FragColor = dot(clamp(-1.0+f*RENDERSIZE.y,0.0,1.0),28.0*(s-e))*(s-0.22)+f*0.5;
}