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vars done through 57

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This commit is contained in:
Erik Reckase
2011-05-04 16:18:29 -06:00
parent d0084aab17
commit 9f78f5225a
1 changed files with 114 additions and 2 deletions
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116
cuburn/code/variations.py
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@ -112,8 +112,8 @@ var(13, 'julia', """
var(14, 'bent', """
float nx = 1.0f;
if (tx < 0.0f) nx = 2.0f;
float ny = 1.0;
if (ty < 0.0f) ty = 0.5f;
float ny = 1.0f;
if (ty < 0.0f) ny = 0.5f;
ox += w * nx * tx;
oy += w * ny * ty;
""")
@ -441,3 +441,115 @@ var(49, 'disc2', """
oy += r * (cosf(t) + sintwist);
""")
var(50, 'super_shape', """
float ang = atan2f(ty, tx);
float theta = 0.25f * ({{px.get('xf.super_shape_m')}} * ang + M_PI);
float t1 = fabsf(cosf(theta));
float t2 = fabsf(sinf(theta));
t1 = powf(t1,{{px.get('xf.super_shape_n2')}});
t2 = powf(t2,{{px.get('xf.super_shape_n3')}});
float myrnd = {{px.get('xf.super_shape_rnd')}};
float d = sqrtf(tx*tx+ty*ty);
float r = w * ((myrnd*mwc_next_01(rctx) + (1.0f-myrnd)*d) - {{px.get('xf.super_shape_holes')}})
* powf(t1+t2, {{px.get('-1.0 / xf.super_shape_holes', 'super_shape_pneg')}}) / d;
ox += r * tx;
oy += r * ty;
""")
var(51, 'flower', """
float holes = {{px.get('xf.flower_holes')}};
float petals = {{px.get('xf.flower_petals')}};
float r = w * (mwc_next_01(rctx) - holes) * cosf(petals*atan2f(ty, tx)) / sqrtf(tx*tx + ty*ty);
ox += r * tx;
oy += r * ty;
""")
var(52, 'conic', """
float d = sqrtf(tx*tx + ty*ty);
float ct = tx / d;
float holes = {{px.get('xf.conic_holes')}};
float eccen = {{px.get('xf.conic_eccentricity')}};
float r = w * (mwc_next_01(rctx) - holes) * eccen / (1.0f + eccen*ct) / d;
ox += r * tx;
oy += r * ty;
""")
var(53, 'parabola', """
float r = sqrtf(tx*tx + ty*ty);
float sr = sinf(r);
float cr = cosf(r);
ox += {{px.get('xf.parabola_height')}} * w * sr * sr * mwc_next_01(rctx);
oy += {{px.get('xf.parabola_width')}} * w * cr * mwc_next_01(rctx);
""")
var(54, 'bent2', """
float nx = 1.0f;
if (tx < 0.0f) nx = {{px.get('xf.bent2_x')}};
float ny = 1.0f;
if (ty < 0.0f) ny = {{px.get('xf.bent2_y')}};
ox += w * nx * tx;
oy += w * ny * ty;
""")
var(55, 'bipolar', """
float x2y2 = tx*tx + ty*ty;
float t = x2y2 + 1.0f;
float x2 = tx * 2.0f;
float ps = -M_PI_2 * {{px.get('xf.bipolar_shift')}}
float y = 0.5 * atan2f(2.0f * ty, x2y2 - 1.0f) + ps;
if (y > M_PI_2)
y = -M_PI_2 + fmodf(y + M_PI_2, M_PI);
else if (y < -M_PI_2)
y = M_PI_2 - fmodf(M_PI_2 - y, M_PI);
ox += w * 0.25f * M_2_PI * logf( (t+x2) / (t-x2) );
oy += w * M_2_PI * y;
""")
var(56, 'boarders', """
float roundX = rintf(tx);
float roundY = rintf(ty);
float offsetX = tx - roundX;
float offsetY = ty - roundY;
if (mwc_next_01(rctx) > 0.75f) {
ox += w * (offsetX*0.5f + roundX);
oy += w * (offsetY*0.5f + roundY);
} else {
if (fabsf(offsetX) >= fabsf(offsetY)) {
if (offsetX >= 0.0f) {
ox += w * (offsetX*0.5f + roundX + 0.25f);
oy += w * (offsetY*0.5f + roundY + 0.25f * offsetY / offsetX);
} else {
ox += w * (offsetX*0.5f + roundX - 0.25f);
oy += w * (offsetY*0.5f + roundY - 0.25f * offsetY / offsetX);
}
} else {
if (offsetY >= 0.0f) {
oy += w * (offsetY*0.5f + roundY + 0.25f);
ox += w * (offsetX*0.5f + roundX + offsetX / offsetY * 0.25f);
} else {
oy += w * (offsetY*0.5f + roundY - 0.25f);
ox += w * (offsetX*0.5f + roundX - offsetX / offsetY * 0.25f);
}
}
}
""")
var(57, 'butterfly', """
/* wx is weight*4/sqrt(3*pi) */
float wx = w * 1.3029400317411197908970256609023f;
float y2 = ty * 2.0f
float r = wx * sqrtf(fabsf(ty * tx)/(tx*tx + y2*y2));
ox += r * tx;
oy += r * y2;
""")