APPENDIX A.A
Mandelbar Variation Snowflakes
Mandelbar Variation Snowflakes use Mandelbrot variations, actually Mandelbar variations.
Mandelbrot is (x+iy)² and Mandelbar is (x-iy)² which produces a three-pronged figure.
The expression (x-iy)⁵ produces a six-pronged figure with the figure not quite radially symmetric, but with a snowflake shape.
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for (i = 0; i ≤ 800; i++) { for (j = 0; j ≤ 800; j++) { x = 0.0; y = 0.0; xs = -4.0+(i / 100.0); ys = -4.0+(j / 100.0); k = 0; do { k = k+1; xnew = x⁵-10.0*x³*y²+5.0*x*y⁴+xs; ynew = -y⁵+10.0*x²*y³-5.0*x⁴*y+ys; x = xnew; y = ynew; } while ((k ≤ 255) && (x*x+y*y ≤ 16.0)); PlotPixel(i, j, color); } }Six-Pronged Mandelbar Expanded Center with Pseudocode
The center of the Six-Pronged Mandelbar is expanded to reveal the prongs.
for (i = 0; i ≤ 1200; i++) { for (j = 0; j ≤ 1200; j++) { x = 0.0; y = 0.0; xs = -1.5+(i / 400.0); ys = -1.5+(j / 400.0); k = 0; do { k = k+1; xnew = x⁵-10.0*x³*y²+5.0*x*y⁴+xs; ynew = -y⁵+10.0*x²*y³-5.0*x⁴*y+ys; x = xnew; y = ynew; } while ((k ≤ 255) && (x*x+y*y ≤ 16.0)); PlotPixel(i, j, color); } }Six-Pronged Mandelbar Snowflake with Pseudocode
To obtain this figure, pixels are plotted at iteration count increment.
for (i = 0; i ≤ 1200; i++) { oldk = 0; for (j = 0; j ≤ 1200; j++) { x = 0.0; y = 0.0; xs = -1.5+(i / 400.0); ys = -1.5+(j / 400.0); k = 0; do { k = k+1; xnew = x⁵-10.0*x³*y²+5.0*x*y⁴+xs; ynew = -y⁵+10.0*x²*y³-5.0*x⁴*y+ys; x = xnew; y = ynew; } while ((k ≤ 255) && (x*x+y*y ≤ 16.0)); if ((oldk != k) && (k > 3) && (oldk > 3)) PlotPixel(i, j, color); oldk = k; } }
Snowflake | Build: (f(x,y), g(x,y)) | Escape: h(x,y)>value |
---|---|---|
Example | (x⁵-10.0*x³*y²+5.0*x*y⁴, -y⁵+10.0*x²*y³-5.0*x⁴*y) | x²+y²>16.0 |
Snowflake #1 | (x⁵-10.0*x³*y²+5.0*x*y⁴-0.125*x, -y⁵+10.0*x²*y³-5.0*x⁴*y-0.125*y) | x²+y²>16.0 |
Snowflake #2 | (x⁵*k-10.0*x³*y²*k+5.0*x*y⁴*k, -y⁵*k+10.0*x²*y³*k-5.0*x⁴*y*k) | x²+y²>16.0 |
Snowflake #3 | (x⁵-10.0*x³*y²+5.0*x*y⁴, -y⁵+10.0*x²*y³-5.0*x⁴*y) | x²+y²>16.0/k |
Snowflake #4 | (x⁵-10.0*x³*y²+5.0*x*y⁴, -y⁵+10.0*x²*y³-5.0*x⁴*y) | |x|>16.0/k |
Snowflake #5 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x, -y⁵+10.0*x²*y³-5.0*x⁴*y-y) | |x|+|y|>16.0/k |
Snowflake #6 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/k, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/k) | |x|+|y|>16.0/k |
Snowflake #7 | (x⁵*k-10.0*x³*y²*k+5.0*x*y⁴*k+x/k, -y⁵*k+10.0*x²*y³*k-5.0*x⁴*y*k+y/k) | x²+y²>16.0 |
Snowflake #8 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/3.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/3.0) | x²+y²>16.0/k |
Snowflake #9 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x*1.25, -y⁵+10.0*x²*y³-5.0*x⁴*y-y*1.25) | x²+y²>16.0/k |
Snowflake #10 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/2.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/2.0) | x²+y²>16.0/k |
Snowflake #11 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x/10.0, -y⁵+10.0*x²*y³-5.0*x⁴*y-y/10.0) | x²+y²>16.0/k |
Snowflake #12 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/20.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/20.0) | x²+y²+|x|+|y|>16.0/k |
Snowflake #13 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x/20.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/4.0) | x²+y²+|x|>16.0/k |
Snowflake #14 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/k, -y⁵+10.0*x²*y³-5.0*x⁴*y)+y/k) | x²+|y|>16.0/k |
Snowflake #15 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/k, -y⁵+10.0*x²*y³-5.0*x⁴*y)+y/k) | |y|>16.0/k |
Snowflake #16 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/k, -y⁵+10.0*x²*y³-5.0*x⁴*y)+y/k) | |x|>16.0/k |
Snowflake #17 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x/2.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y/2.0) | |x|>16.0/k |
Snowflake #18 | (x⁵-10.0*x³*y²+5.0*x*y⁴+x*k/12.0, -y⁵+10.0*x²*y³-5.0*x⁴*y+y*k/12.0) | |x|>16.0/k |
Snowflake #19 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x*k/12.0, -y⁵+10.0*x²*y³-5.0*x⁴*y-y*k/12.0) | |x|>16.0/k |
Snowflake #20 | (x⁵*k-10.0*x³*y²*k+5.0*x*y⁴*k-x/k, -y⁵*k+10.0*x²*y³*k-5.0*x⁴*y*k-y/k) | |x|>16.0/k |
Snowflake #21 | (x⁵*k-10.0*x³*y²*k+5.0*x*y⁴*k-x/k³, -y⁵*k+10.0*x²*y³*k-5.0*x⁴*y*k-y/k³) | |x*y²|>16.0/k |
Snowflake #22 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x/k, -y⁵+10.0*x²*y³-5.0*x⁴*y -y/k) | x²+y²>16.0/k |
Snowflake #23 | (x⁵-10.0*x³*y²+5.0*x*y⁴-x/k², -y⁵+10.0*x²*y³-5.0*x⁴*y-y/k²) | x²+y²+|x|+|y|>16.0/k |
Snowflake #24 | (x⁵/k-10.0*x³*y²/k+5.0*x*y⁴/k-x/k³, -y⁵/k+10.0*x²*y³/k-5.0*x⁴*y/k-y/k²) | x²*y²*|x|*|y|+|x|>16.0/k |
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