Specularity, Highlights of the Surface

1. Create a NURBs Sphere.
   • By default, lambert1 is a applied.
   • lambert has no specularity/highlights. It is matte in color.
2. Create a material with highlights.
   • – Open the Rendering Tab;
   • – Notice all the materials with highlights.
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     • Lambert: Only material with no specularity;
     • Anisotropic
     • Blinn
     • Phong
     • PhongE
3. Apply a Blinn material to your sphere.
   • – Change color of sphere to red;
   • – Open your IPR Window to see the updates;
   • – Open your Attribute Editor and navigate to the Blinn tab.
   • – By default, you’ll see a neutral highlight.
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4. Adjust the Properties for the Blinns highlight/specularity.
   • ATTRIBUTE EDITOR || Blinn Tab > Specular Shading Section.
     • Eccentricity: How Big the highlight.
     • Specular Roll Off: How intense/bright the highlight.
     • *Note: The smaller and brighter the highlight, the shinier the object is. The larger the more matte the surface is.
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5. Change the material to a Phong in the Attribute Editor
   • – Pull the Type drop-down and choose Phong as your material.
   • – The ATTRIBUTE EDITOR || Phong Tab > Specular Shading Section.
     • *Note: the values for specular shading has changed names.
       
     • – Cosine Power and specular color.
     • – Cosine Power: Determines how sharp or broad the highlight is.
     • – Phong is better for shinier surfaces.
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6. Change your surface material to PhongE.
   • The ATTRIBUTE EDITOR || PhongE Tab > Specular Shading Section.
     • Highlight Size: Determines size of highlight.
     • Whiteness: the white within the highlight.
     • Roughness: sharpness of the edge of highlight
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7. Change your surface to material to Anisotropic.
   • – Anisotropic material used for materials like metals and hair.
   • – Has non-circular highlights.. highlights along an axis.
   • The ATTRIBUTE EDITOR || Anisotropic > Specular Shading Section.
     • Angle:
     • Spread in X:
     • Spread in Y:
     • Roughness:
     • Fresnel Index: How it reflects light depending the roughness of the surface.
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