public static Material IsotropicVolumetric(RGBSpectrum albedo, float density)
{
return(new(IDensityProfile.Volumetric(density),
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.Forwards,
IReflectionProfile.Spherical,
IEmittanceProfile.None));
}
public static Material DiffuseParticleCloud(RGBSpectrum albedo, float density)
{
return(new(IDensityProfile.Volumetric(density),
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.Uniform,
IReflectionProfile.Diffuse,
IEmittanceProfile.None));
}
public static Material Glossy(RGBSpectrum albedo, float roughness)
{
return(new(IDensityProfile.Surface,
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.SurfaceGGX(roughness),
IReflectionProfile.Specular,
IEmittanceProfile.None));
}
public static Material RoughSpecularDiffuseBlend(RGBSpectrum albedo, float specularity, float roughness)
{
return(new(IDensityProfile.Surface,
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.SurfaceGGX(roughness),
IReflectionProfile.Blend((IReflectionProfile.Diffuse, 1f - specularity), (IReflectionProfile.Specular, specularity)),
IEmittanceProfile.None));
}
public static Material Specular(RGBSpectrum albedo)
{
return(new(IDensityProfile.Surface,
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.Flat,
IReflectionProfile.Specular,
IEmittanceProfile.None));
}
public static Material Emitter(RGBSpectrum spectrum)
{
return(new(IDensityProfile.Surface,
IAbsorptionProfile.BlackBody,
IOrientationProfile.Flat,
IReflectionProfile.Diffuse,
IEmittanceProfile.Uniform(spectrum)));
}
public static Material SpecularParticleCloud(RGBSpectrum albedo, float density, float roughness)
{
return(new(IDensityProfile.Volumetric(density),
IAbsorptionProfile.Uniform(albedo),
IOrientationProfile.SurfaceSGGX(roughness),
IReflectionProfile.Specular,
IEmittanceProfile.None));
}
public static ColorRGB8 GetColor8Gamma22(RGBSpectrum color)
{
Float fr = Math.Pow(color.R, Idx22) * 255.0f;
Float fg = Math.Pow(color.G, Idx22) * 255.0f;
Float fb = Math.Pow(color.B, Idx22) * 255.0f;
byte r, g, b;
if (fr < 0)
{
r = 0;
}
else if (fr > 255)
{
r = 255;
}
else
{
r = (byte)fr;
}
if (fg < 0)
{
g = 0;
}
else if (fg > 255)
{
g = 255;
}
else
{
g = (byte)fg;
}
if (fb < 0)
{
b = 0;
}
else if (fb > 255)
{
b = 255;
}
else
{
b = (byte)fb;
}
return(new ColorRGB8(r, g, b));
}
public static ColorRGB8 GetColor8(RGBSpectrum color)
{
color *= 255;
byte r, g, b;
if (color.R < 0)
{
r = 0;
}
else if (color.R > 255)
{
r = 255;
}
else
{
r = (byte)color.R;
}
if (color.G < 0)
{
g = 0;
}
else if (color.G > 255)
{
g = 255;
}
else
{
g = (byte)color.G;
}
if (color.B < 0)
{
b = 0;
}
else if (color.B > 255)
{
b = 255;
}
else
{
b = (byte)color.B;
}
return(new ColorRGB8(r, g, b));
}
private static string ColorDescription(RGBSpectrum color)
{
return(color.R + "," + color.G + "," + color.B);
}
