The last step is computing lighting effects on the 3D shape. It is called Amount in the RealWorld bevel effect. The height of the 3D object is usually configurable. Upper edges of the 3D object were beveled. Alternatively, the beveling can have a more complex shape, for example rounded.ĢD shape extruded into the 3rd dimension. The beveling can be as simple as on the image below, where the edges are simply cut under the angle of 45 degrees. The left image below shows a 3D object created from the example image used in the beginning of the article.īeveling is a 3D operation and since we have a 3D object available now, we can bevel its edges. In the second step, the regions inside the shape are assigned given height and a 3D object is obtained. If the transparency is unavailable or inadequate, image mask (selection) may be used. In most cases, the transparency (alpha) channel of the image is directly used to determine the shape of the object. Illuminate the 3D object to obtain locations of highlights and shadows.įirst step is relatively easy.Extrude the 2D object into the 3rd dimension.Determine the outline of the drawn object.How does Bevel effect work?Ī bevel filter typically performs the following 4 steps: If the lights and shadows are consistent, the object appears to have volume. Because you have seen a lot of lit 3D objects in your lifetime, your brain has learned to estimate the 3D shape of an object from a lit 2D image. Why does it seem that the beveled image has depth?
On the beveled image, the top left edge of the circle is brighter and the bottom right edge is darker.
If you study the images for a while, you'll discover that the only difference is brightness of certain areas.
The 2-dimensional shape of image remains the same - it is a circle with a square cut out in both cases. What is the difference between the two images? It got its name, because a beveled shape on an image looks like a real beveled edge of a wooden, metallic, or plastic item. The bevel image effect seeks to add depth to an image. No special knowledge is needed to understand this article, although you should be familiar with the way computers represent and store images. This article explains what the bevel effect does and how does it accomplish its task.
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