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diff --git a/gui/libs/ofxAChaosLib/src/AChaosJong.h b/gui/libs/ofxAChaosLib/src/AChaosJong.h
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+++ b/gui/libs/ofxAChaosLib/src/AChaosJong.h
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+/*
+	32/64 bits A-Chaos Lib in openFrameworks	
+	(c) s373.net/x 2004, 2012, 2015
+	http://s373.net/code/A-Chaos-Lib/A-Chaos.html
+	programmed by Andre Sier, revised 2015
+	License: MIT
+*/
+
+#pragma once
+#include "AChaosBase.h"
+
+class AChaosJong : public AChaosBase {
+public:
+
+	REAL a, b, c, d, nx, ny;	
+
+	vector<string> param_labels={"a","b","c","d","",""};
+
+	AChaosJong(){}
+	~AChaosJong(){}	
+
+	virtual void setup(REAL * params = NULL){
+	
+		AChaosBase::init(params, 6, 2);	
+		if(params==NULL){	
+			//init	
+			a = 1.4f;
+			b = -2.3f;
+			c = 2.4f;
+			d = -2.1f;
+			nx = 0.0f;
+			ny = 0.0f;
+			REAL p[6] = {a,b,c,d,nx,ny};
+			set(p);
+		}  else { set(params); }
+	
+	}
+
+	void reset(){
+		a = iv[0];
+		b = iv[1];
+		c = iv[2];
+		d = iv[3];
+		nx = iv[4];
+		ny = iv[5];
+	}
+	
+ 	void calc(){ 	
+	// Peter de Jong attractor
+	//	lx1 = sin(a*ny)-cos(b*nx);
+	//	ly1 = sin(c*nx)-cos(d*ny);
+
+		nx = SIN(a*ny)-COS(b*nx);
+		ny = SIN(c*nx)-COS(d*ny);
+
+		ov[0] = nx;
+		ov[1] = ny;
+
+ 	}
+
+
+	
+};