Render mandelbrots

1 files changed, 5 insertions, 4 deletions

diff --git a/attract.c b/attract.c
index 7a31bb9..9e093ec 100644
--- a/attract.c
+++ b/attract.c
@@ -17,11 +17,12 @@
 const int MAXITER=200;
 const double EPS=1e-1;
 
-static double complex att_func(double complex x,double exponent){
-	return clog((1-cpow(x,exponent+1))/(1-x));
+static double complex att_func(double complex x,double exponent,double complex start){
+	// return clog((1-cpow(x,exponent+1))/(1-x));
 
 	// return x;
-	return x*x+CMPLX(-0.2,0.7);
+	// return x*x+CMPLX(-0.2,0.7);
+	return x*x+start;
 
 	// return csqrt(M_SQRT2*x);  // sqrt(2) and 0
 	// return csqrt(1+x);  // phi
@@ -100,7 +101,7 @@ static void* thread_entry(void *arg_vp){
 					cfg.midy-(double)(iy-cfg.height/2)/cfg.unitsz);
 			double complex z=start;
 			for(int i=0;i<MAXITER;i++){
-				z=att_func(z,cfg.exponent);
+				z=att_func(z,cfg.exponent,start);
 			}
 			if(do_basins){
 				int bi;