protected Material()
{
this.absorptivity = 0.3f;
this.glossy = 0.1f;
this.kDiff = 0.5f;
this.kSpec = 0.5f;
this.kTrans = 0.0f;
this.kAmb = 0.1f;
this.diffuseColor = RGBColor.White;
this.specularColor = RGBColor.White;
this.refractIndex = 1.51f;
this.shiness = 64;
this.isTexturized = false;
this.texture = new Texture();
}
public static Vector3D BumpNormal(Texture bumpTexture, Intersection intersection)
{
const float scale = 1;
UVCoordinate uv = intersection.CurrentTextureCoordinate;
float dx = 1.0f / (bumpTexture.Width - 1);
float dy = 1.0f / (bumpTexture.Height - 1);
float b0 = bumpTexture.GetPixel(uv).Luminance;
float bx = bumpTexture.GetPixel(uv.U + dx, uv.V).Luminance;
float by = bumpTexture.GetPixel(uv.U, uv.V + dy).Luminance;
return (intersection.Normal + new Vector3D(scale * (bx - b0) / dx, scale * (by - b0) / dy, 1)).Normalized;
//RGBColor color = bumpTexture.GetPixel(uv);
//Vector3D tangent1, tangent2;
//Vector3D.Orthonormalize(intersection.Normal, out tangent1, out tangent2);
}
protected Material(float kdiff, float kspec, float kamb, float refractIndex, float ktrans, float glossy,
float shiness, Texture texture)
{
this.KDiff = kdiff;
this.KSpec = kspec;
this.KTrans = ktrans;
this.KAmb = kamb;
this.diffuseColor = RGBColor.White;
this.specularColor = RGBColor.White;
this.RefractIndex = refractIndex;
this.Glossy = glossy;
this.Absorptivity = 0.3f;
this.Shiness = shiness;
if (!texture.IsLoaded) {
this.isTexturized = false;
} else {
this.texture = texture;
this.isTexturized = true;
}
}
private void SetUpTextures()
{
this.xMinTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_NX")));
this.xMaxTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_PX")));
this.yMinTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_NY")));
this.yMaxTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_PY")));
this.zMinTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_NZ")));
this.zMaxTexture = new Texture(Path.Combine(this.basePath, this.fileNamePattern.Replace("{#}", "_PZ")));
this.isLoaded = true;
}
public PhongMaterial(float kdiff, float kspec, float kamb, float refractIndex, float ktrans, float glossy,
float shiness, Texture texture)
: base(kdiff, kspec, kamb, refractIndex, ktrans, glossy, shiness, texture)
{
}
public CookTorranceMaterial(float kdiff, float kspec, float kamb, float refractIndex, float ktrans, float glossy,
float shiness, float roughness, Texture texture)
: base(kdiff, kspec, kamb, refractIndex, ktrans, glossy, shiness, texture)
{
this.roughness = roughness;
}