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up through var 69!

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This commit is contained in:
Erik Reckase 2011-05-05 13:44:12 -06:00
parent 4f5d7efe27
commit ec01cbfc43
1 changed files with 84 additions and 0 deletions
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84
cuburn/code/variations.py
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@ -682,3 +682,87 @@ var(64, 'foci', """
oy += tmp * sn;
""")
var(65, 'lazysusan', """
float lx = {{px.get('xf.lazysusan_x')}};
float ly = {{px.get('xf.lazysusan_y')}};
float x = tx - lx;
float y = ty + ly;
float r = sqrtf(x*x + y*y);
if (r < w) {
float a = atan2f(y,x) + {{px.get('xf.lazysusan_spin')}} +
{{px.get('xf.lazysusan_twist')}}*(w-r);
r = w * r;
ox += r * cosf(a) + lx;
oy += r * sinf(a) - ly;
} else {
r = w * (1.0f + {{px.get('xf.lazysusan_space')}} / r);
ox += r * x + lx;
oy += r * y - ly;
}
""")
var(66, 'loonie', """
float r2 = tx*tx + ty*ty;;
float w2 = w*w;
if (r2 < w2) {
float r = w * sqrtf(w2/r2 - 1.0f);
ox += r * tx;
oy += r * ty;
} else {
ox += w * tx;
oy += w * ty;
}
""")
var(67, 'pre_blur', """
float rndG = w * (mwc_next_01(rctx) + mwc_next_01(rctx)
+ mwc_next_01(rctx) + mwc_next_01(rctx) - 2.0f);
float rndA = mwc_next_01(rctx) * 2.0f * M_PI;
/* Note: original coordinate changed */
tx += rndG * cosf(rndA);
ty += rndG * sinf(rndA);
""")
var(68, 'modulus', """
float mx = {{px.get('xf.modulus_x')}}
float my = {{px.get('xf.modulus_y')}}
float xr = 2.0f*mx;
float yr = 2.0f*my;
if (tx > mx)
ox += w * (-mx + fmodf(tx + mx, xr));
else if (tx < -mx)
ox += w * ( mx - fmodf(mx - tx, xr));
else
ox += w * tx;
if (ty > my)
oy += w * (-my + fmodf(ty + my, yr));
else if (ty < -my)
oy += w * ( my - fmodf(my - ty, yr));
else
oy += w * ty;
""")
var(69, 'oscope', """
float tpf = 2.0f * M_PI * {{px.get('xf.oscope_frequency')}};
float amp = {{px.get('xf.oscope_amplitude')}};
float sep = {{px.get('xf.oscope_separation')}};
float dmp = {{px.get('xf.oscope_damping')}};
float t = amp * expf(-fabsf(tx)*dmp) * cosf(tpf*tx) + sep;
ox += w*tx;
if (fabsf(ty) <= t)
oy -= w*ty;
else
oy += w*ty;
""")