float f(Mat m, int n) {
float z = -1.0f;
for (float r = 0.0f; r < 0.8f; r += 0.02f) {
Vec v = { 0.0f, r, 0.0f, 1.0f };
transformPosition(&v, m, v);
z = opUnion(z, sphere(v, transformLength(m, 0.05f * (0.95f - r))));
}
if (n > 0) {
Mat ry, rz, s, t, m2, m3;
rotateZ(&rz, 1.8f);
for (int p = 0; p < 6; p++) {
rotateY(&ry, p * (2 * PI / 6));
mul(&m2, ry, rz);
float ss = 0.45f;
for (float r = 0.2f; r < 0.8f; r += 0.1f) {
scale(&s, ss);
translate(&t, 0.0f, r, 0.0f);
mul(&m3, s, m2);
mul(&m3, t, m3);
mul(&m3, m, m3);
z = opUnion(z, f(m3, n - 1));
ss *= 0.8f;
}
}
}
return z;
}
double
ConstraintTypes::PlaylistLength::satisfaction( const Meta::TrackList& tl ) const
{
quint32 l = static_cast<quint32>( tl.size() );
if ( m_comparison == CompareNumEquals ) {
if ( l > m_length )
return ( l == m_length ) ? 1.0 : transformLength( l - m_length );
else
return ( l == m_length ) ? 1.0 : transformLength( m_length - l );
} else if ( m_comparison == CompareNumGreaterThan ) {
return ( l > m_length ) ? 1.0 : transformLength( m_length - l );
} else if ( m_comparison == CompareNumLessThan ) {
return ( l < m_length ) ? 1.0 : transformLength( l - m_length );
} else {
return 0.0;
}
}
