 • January 22, 2021, 02:01:00 PM

### Author Topic:  How many different ways are there to show such set ?  (Read 1432 times)

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#### Adam Majewski

• Fractal Frogurt
•      • Posts: 434 ##### Re: How many different ways are there to show such set ?
« Reply #30 on: December 22, 2020, 04:38:30 PM »

#### Adam Majewski

• Fractal Frogurt
•      • Posts: 434 ##### Re: How many different ways are there to show such set ?
« Reply #31 on: January 13, 2021, 09:16:50 PM »

@saka

btw : I was "fighting " with smooth escape time

I know :
Code: [Select]
 float sn = n - log2(log2(dot(z,z))) + 4.0;  // equivalent optimized smooth iteration count from Inigo Quilez double t = log(log(sqrt(test1)) / log(GetBailoutRadius())) / log((double) power);  // from KF
but for I used:

Code: [Select]
 double sn = ER/cabs(z);

#### iRyanBell ##### Re: How many different ways are there to show such set ?
« Reply #32 on: January 20, 2021, 10:57:28 PM »
Great shading + clean C code! Experimenting with the reflections using:

Code: [Select]
Z := complex(x, y)C := complex(jX, jY) // 0.25 + 0ii := 0dC := complex(0, 0)reflection := 0.0;reflection2 := 0.0;trap := cdot(Z, Z)min := trapmin2 := 2*minbounds := 0.0mIter := iv := cmplx.Exp(complex(0.0, 1.5*math.Pi));for i = 0; i < mI; i++ {    dC = 0.25 * dC * Z + 1.0    Z = cmplx.Pow(Z, 2)+C    u := Z / dC;    u = u / complex(cmplx.Abs(u), 0)    reflection = cdot(u, v)    reflection = math.Pow(reflection, 2)    trap = cdot(Z, Z)    if trap < min {      min2 = min      min = trap      mIter = i    } else if trap < min2 {      min2 = trap    }    bounds = math.Pow(1.0-min/min2, 0.1)    if (cmplx.Abs(Z) > 100.0) {      reflection2 = cdot(u, v);      break;    }}return reflection+reflection2+bounds

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