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up to var22 (fan) completed.

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This commit is contained in:
Erik Reckase 2011-05-03 21:49:14 -06:00
parent d1137e8e89
commit 765cf6b2e0
1 changed files with 26 additions and 0 deletions
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26
cuburn/code/variations.py
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@ -154,6 +154,32 @@ var(19, 'power', """
oy += r * sa;
""")
var(20, 'cosine', """
float a = M_PI * tx;
ox += w * cosf(a) * coshf(ty);
oy -= w * sinf(a) * sinhf(ty);
""")
var(21, 'rings', """
float dx = {{px.get(None, 'pre_xo')}} * {{px.get(None, 'pre_xo')}};
float r = sqrtf(tx*tx + ty*ty);
float a = atan2f(tx, ty);
r = w * (fmodf(r+dx, 2.0f*dx) - dx + r * (1.0f - dx));
ox += r * cosf(a);
oy += r * sinf(a);
""")
var(22, 'fan', """
float dx = M_PI * ({{px.get(None, 'pre_xo')}} * {{px.get(None, 'pre_xo')}});
float dx2 = 0.5f * dx;
float dy = {{px.get(None, 'pre_yo')}};
float a = atan2f(tx, ty);
a += (fmodf(a+dy, dx) > dx2) ? -dx2 : dx2;
float r = w * sqrtf(tx*tx + ty*ty);
ox += r * cosf(a);
oy += r * sinf(a);
""")
var(33, 'juliascope', """
float ang = atan2f(ty, tx);
float power = {{px.get('xf.juliascope_power', 'juscope_power')}};