---

/*{
	"CREDIT": "mojovideotech",
	"CATEGORIES": [
		"fractal",
		"mandelbrot"
	],
	"INPUTS": [
		{
			"NAME": "center",
			"TYPE": "point2D",
			"DEFAULT": [
				0,
				0
			],
			"MAX": [
				10,
				10
			],
			"MIN": [
				-10,
				-10
			]
		},
		{
			"NAME": "target",
			"TYPE": "point2D",
			"DEFAULT": [
				0.702985,
				0.299
			],
			"MAX": [
				1,
				1
			],
			"MIN": [
				-1,
				-1
			]
		},
		{
			"NAME": "scale",
			"TYPE": "float",
			"DEFAULT": 0.00002,
			"MIN": 0.00001,
			"MAX": 0.001
		},
		{
			"NAME": "zoom",
			"TYPE": "float",
			"DEFAULT": 0.5,
			"MIN": 0.025,
			"MAX": 4
		},
		{
			"NAME": "loops",
			"TYPE": "float",
			"DEFAULT": 60,
			"MIN": 16,
			"MAX": 512
		},
		{
			"NAME": "cycle",
			"TYPE": "float",
			"DEFAULT": 4,
			"MIN": -16,
			"MAX": 16
		},
		{
			"NAME": "freq",
			"TYPE": "float",
			"DEFAULT": 0.25,
			"MIN": 0.1,
			"MAX": 1
		},
		{
			"NAME": "Zx",
			"TYPE": "long",
			"VALUES": [
				0,
				1,
				2,
				3,
				4,
				5,
				6,
				7,
				8
			],
			"LABELS": [
				"-",
				"Sin",
				"SinSin",
				"TanSin",
				"ExpSinCos",
				"SinModSin",
				"SinLen",
				"SinSinSinCosUV",
				"CosSinATanTIME"
			],
			"DEFAULT": 2
		},
		{
			"NAME": "flip",
			"TYPE": "bool",
			"DEFAULT": false
		},
		{
			"NAME": "rot",
			"TYPE": "bool",
			"DEFAULT": true
		}
	],
	"DESCRIPTION": "based on http://www.glslsandbox.com/e#40432.0"
}*/

////////////////////////////////////////////////////////////
// UltimateMandelbrot   by mojovideotech
//
// based on :
// Vlad's fractal canyon  glslsandbox/e#40432.0
//
// Creative Commons Attribution-NonCommercial-ShareAlike 3.0
////////////////////////////////////////////////////////////



vec4 color(float m) {
	m += cycle * TIME;
	float r = (1.0 + sin(freq * m + 1.0)) / 2.0;
	float g = (1.0 + sin(freq * m + 2.0)) / 2.0;
	float b = (1.0 + sin(freq * m + 4.0)) / 2.0;
	return (vec4(r, g, b, 1.0));
}

void main() {
	vec2 uv = (isf_FragNormCoord.xy) - vec2(0.5) + center;
	uv.x *= RENDERSIZE.x / RENDERSIZE.y;
	if (flip) { uv *= -1.0; }
	if (rot) { uv.xy = -uv.yx; }
	vec2 z = vec2(0), z0, zT;
	float T = TIME * zoom;
	z0.x = uv.x / (scale * T) / (T * 40.0) - (target.x + (T * 0.00000005));
	z0.y = uv.y / (scale * T) / (T * 40.0) - (target.y + (T * 0.00000005));
	float F = 0.0, G = 0.0, H = 0.0;
	for(int i = 0; i < 512; i++) {
		if(dot(z,z) > 16.0) break;
		if(G > loops) break;
		zT.x = (z.x * z.x - z.y * z.y) + z0.x;
		zT.y = (z.y * z.x + z.x * z.y) + z0.y;
		z = zT;
		F++;
		G += 1.0;
	}
	if (Zx == 0)		{	H = log2(log2(dot((z),(z))));	            	}
	else if (Zx == 1)	{	H = log2(log2(dot(sin(z),(z))));	        	}
	else if (Zx == 2)	{	H = log2(log2(dot(sin(z),sin(z))));	        	}
	else if (Zx == 3)	{	H = log2(log2(dot(tan(z),sin(z))));	        	}
	else if (Zx == 4)	{	H = log2(log2(dot(exp(sin(z)/z),cos(z*z))));	}
	else if (Zx == 5)	{	H = log2(log2(dot(sin(1.0/z),mod(sin(z),z))));	}
	else if (Zx == 6)	{	H = log2(log2(dot(sin(z),vec2(length(z)))));	}
	else if (Zx == 7)	{	H = log2(log2(dot(1.0/sin(z-sin(uv.yy)),1.0/sin(z+cos(uv.xx))))); }
	else if (Zx == 8)	{	H = log2(log2(dot(cos(TIME)/sin(z.yy+atan(z.x,z.x)),sin(z.yy)-sin(TIME)/atan(z.y,z.y)))); }

	gl_FragColor = (F == floor(loops+1.0)) ? vec4(0.0, 0.0, 0.0, 1) : color(F - H);
}