public PlasticMaterial(ITexture2 <Spectrum> kd,
ITexture2 <Spectrum> ks,
ITexture2 <float> roughness,
ITexture2 <float> bumpMap,
bool remapRoughness)
{
Kd = kd;
Ks = ks;
Roughness = roughness;
BumpMap = bumpMap;
RemapRoughness = remapRoughness;
}
public MetalMaterial(ITexture2 <Spectrum> eta,
ITexture2 <Spectrum> k,
ITexture2 <float> roughness,
ITexture2 <float> uRoughness,
ITexture2 <float> vRoughness,
ITexture2 <float> bumpMap,
bool remapRoughness)
{
_eta = eta;
_k = k;
_roughness = roughness;
_uRoughness = uRoughness;
_vRoughness = vRoughness;
_bumpMap = bumpMap;
_remapRoughness = remapRoughness;
}
public static void Bump(this ITexture2 <float> d, SurfaceInteraction si)
{
var displace = d.Evaluate(si);
var du = 0.5f * Abs(si.Dudx) + Abs(si.Dudy);
// Create small du if no differential available.
if (du == 0f)
{
du = 0.0005f;
}
si.P += du * si.ShadingGeometry.Dpdu;
si.UV += new Vector2(du, 0f);
si.N = ((Normal)Vector.Cross(si.ShadingGeometry.Dpdu, si.ShadingGeometry.Dpdv) + du * si.Dndu).Normalize();
var uDisplace = d.Evaluate(si);
var dv = 0.5f * Abs(si.Dvdx) + Abs(si.Dvdy);
// Create small dv if no differential available.
if (dv == 0f)
{
dv = 0.0005f;
}
si.P += dv * si.ShadingGeometry.Dpdv;
si.UV += new Vector2(0f, dv);
si.N = ((Normal)Vector.Cross(si.ShadingGeometry.Dpdu, si.ShadingGeometry.Dpdv) + dv * si.Dndv).Normalize();
var vDisplace = d.Evaluate(si);
var dpdu = si.ShadingGeometry.Dpdu +
(uDisplace - displace) / du * (Vector)si.ShadingGeometry.N +
displace * (Vector)si.ShadingGeometry.Dndu;
var dpdv = si.ShadingGeometry.Dpdv +
(vDisplace - displace) / dv * (Vector)si.ShadingGeometry.N +
displace * (Vector)si.ShadingGeometry.Dndv;
si.SetShadingGeometry(dpdu, dpdv, si.ShadingGeometry.Dndu, si.ShadingGeometry.Dndv, false);
}
public DisneyMaterial(
ITexture2 <Spectrum> color,
ITexture2 <float> metallic,
ITexture2 <float> eta,
ITexture2 <float> roughness,
ITexture2 <float> specularTint,
ITexture2 <float> anisotropic,
ITexture2 <float> sheen,
ITexture2 <float> sheenTint,
ITexture2 <float> clearcoat,
ITexture2 <float> clearcoatGloss,
ITexture2 <float> specTrans,
ITexture2 <Spectrum> scatterDistance,
bool isThin,
ITexture2 <float> flatness,
ITexture2 <float> diffTrans,
ITexture2 <float> bumpMap
)
{
Color = color;
Metallic = metallic;
Eta = eta;
Roughness = roughness;
SpecularTint = specularTint;
Anisotropic = anisotropic;
Sheen = sheen;
SheenTint = sheenTint;
Clearcoat = clearcoat;
ClearcoatGloss = clearcoatGloss;
SpecTrans = specTrans;
ScatterDistance = scatterDistance;
IsThin = isThin;
Flatness = flatness;
DiffTrans = diffTrans;
BumpMap = bumpMap;
}
public MatteMaterial(ITexture2 <Spectrum> kd, ITexture2 <float> sigma, ITexture2 <float> bumpMap)
{
Kd = kd;
Sigma = sigma;
BumpMap = bumpMap;
}
public MixMaterial(IMaterial m1, IMaterial m2, ITexture2 <Spectrum> scale)
{
M1 = m1;
M2 = m2;
Scale = scale;
}
public MirrorMaterial(ITexture2 <Spectrum> r, ITexture2 <float> bumpMap)
{
_kr = r;
_bumpMap = bumpMap;
}
