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added variations up to #16. 1/6 done!

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This commit is contained in:
Erik Reckase 2011-05-03 21:16:02 -06:00
parent c605815130
commit 8b6c6f462e
1 changed files with 92 additions and 0 deletions
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92
cuburn/code/variations.py
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@ -27,11 +27,54 @@ var(2, 'spherical', """
oy += ty * r2;
""")
var(3, 'swirl', """
float r2 = tx*tx + ty*ty;
float c1 = sin(r2);
float c2 = cos(r2);
ox += w * (c1*tx - c2*ty);
oy += w * (c2*tx + c1*ty);
""")
var(4, 'horseshoe', """
float r = w / sqrt(tx*tx + ty*ty);
ox += r * (tx - ty) * (tx + ty);
oy += 2.0 * tx * ty * r;
""")
var(5, 'polar', """
ox += w * atan2f(tx, ty) * M_1_PI;
oy += w * (sqrtf(tx * tx + ty * ty) - 1.0f);
""")
var(6, 'handkerchief', """
float a = atan2f(tx, ty);
float r = sqrt(tx*tx + ty*ty);
ox += w * r * sin(a+r);
oy += w * r * cos(a-r);
""")
var(7, 'heart', """
float sq = sqrt(tx*tx + ty*ty);
float a = sq * atan2f(tx, ty);
float r = w * sq;
ox += r * sin(a)
oy -= r * cos(a)
""")
var(8, 'disc', """
float a = w * atan2f(tx, ty) * M_1_PI;
float r = M_PI * sqrt(tx*tx + ty*ty);
ox += sin(r) * a
oy += cos(r) * a
""")
var(9, 'spiral', """
float a = atan2f(tx, ty);
float r = sqrt(tx*tx + ty*ty);
float r1 = w / r;
ox += r1 * (cos(a) + sin(r));
oy += r1 * (sin(a) - cos(r));
""")
var(10, 'hyperbolic', """
float a = atan2f(tx, ty);
@ -40,6 +83,55 @@ var(10, 'hyperbolic', """
oy += w * cosf(a) * r;
""")
var(11, 'diamond', """
float a = atan2f(tx, ty);
float r = sqrt(tx*tx + ty*ty);
ox += w * sin(a) * cos(r);
oy += w * cos(a) * sin(r);
""")
var(12, 'ex', """
float a = atan2f(tx, ty);
float r = sqrt(tx*tx + ty*ty);
float n0 = sin(a+r);
float n1 = cos(a-r);
float m0 = n0*n0*n0*r;
float m1 = n1*n1*n1*r;
ox += w * (m0 + m1);
oy += w * (m0 - m1);
""")
var(13, 'julia', """
float a = 0.5 * atan2f(tx, ty)
if (mwc_next(rctx) & 1) a += M_PI;
float r = w * sqrt(tx*tx + ty*ty);
ox += r * cos(a);
oy += r * sin(a);
""")
var(14, 'bent', """
float nx = 1.0;
if (tx < 0.0) nx = 2.0;
float ny = 1.0;
if (ty < 0.0) ty = 0.5;
ox += w * nx * tx;
oy += w * ny * ty;
""")
var(15, 'waves', """
float c10 = {{px.get(None, 'pre_yx')}};
float c11 = {{px.get(None, 'pre_yy')}};
ox += w * (tx + c10 + sin(ty * {{px.get('xf.waves_dx2')}}));
oy += w * (ty + c11 + sin(tx * {{px.get('xf.waves_dy2')}}));
""")
var(16, 'fisheye', """
float r = sqrt(tx*tx + ty*ty);
r = 2.0 * w / (r + 1.0);
ox += r * ty;
oy += r * tx;
""")
var(33, 'juliascope', """
float ang = atan2f(ty, tx);
float power = {{px.get('xf.juliascope_power', 'juscope_power')}};