knh_float_t knh_float_rand(void)
{
#if defined(K_USING_NOFLOAT)
return (knh_float_t)knh_rand();
#elif defined(K_USING_INT32)
return (knh_float_t)genrand_real1();
#else
return (knh_float_t)genrand64_real1();
#endif
}
static KMETHOD Math_random(KonohaContext *kctx, KonohaStack *sfp)
{
kfloat_t ret;
#if defined(K_USING_INT32)
ret = genrand_real1();
#else
ret =genrand64_real1();
#endif
KReturnFloatValue(ret);
}
AtmosphereInfo::AtmosphereInfo(int seed):
m_fInnerRadius(1.0f),
m_nSamples(NUMSAMPLES),
m_Kr(KR),
m_Kr4PI(m_Kr*4.0f*PI),
m_Km(KM),
m_Km4PI(m_Km*4.0f*PI),
m_fRayleighScaleDepth(RAYLEIGHDEPTH),
m_fMieScaleDepth(MIEDEPTH)
{
init_genrand64(seed);
m_fOuterRadius=1.05f+(genrand64_real1()-0.3f)*0.04f;
// m_fWavelength[0]=WAVELENGTH0+(genrand64_real1()-0.5f)*0.200f;
// m_fWavelength[1]=WAVELENGTH1+(genrand64_real1()-0.5f)*0.200f;
// m_fWavelength[2]=WAVELENGTH2+(genrand64_real1()-0.5f)*0.200f;
m_fWavelength[0]=WAVELENGTH0+(genrand64_real1()-0.5f)*0.010f;
m_fWavelength[1]=WAVELENGTH1+(genrand64_real1()-0.5f)*0.010f;
m_fWavelength[2]=WAVELENGTH2+(genrand64_real1()-0.5f)*0.010f;
m_ESun=(ESUN)+(genrand64_real1())*20.0f;
m_g=(G)+(genrand64_real1()-0.5f)*0.15f;
m_fWavelength4[0]=(powf(m_fWavelength[0], 4.0f));
m_fWavelength4[1]=(powf(m_fWavelength[1], 4.0f));
m_fWavelength4[2]=(powf(m_fWavelength[2], 4.0f));
m_fScale=(1.0f/(m_fOuterRadius - m_fInnerRadius));
}