Architectural_Design_with_SketchUp
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Chapter 5 Rendering in <strong>SketchUp</strong><br />
As Figure 5.65 illustrates, tiled textures can create repeating patterns that can appear<br />
unrealistic. It is, nevertheless, possible to use good-quality tiled textures (e.g., <strong>SketchUp</strong>’s<br />
roofing or brick materials) that do not have the patterning problem.<br />
Figure 5.65: Problems <strong>with</strong> some <strong>SketchUp</strong> materials (left: repeating pattern; right: low texture resolution)<br />
NN<br />
In some cases, it may be more appropriate to use a single texture image (that does not<br />
seamlessly repeat). A textured concrete wall that has graffiti on it would be such a case.<br />
For this, a single good-quality and reasonably straight image would be enough to provide<br />
an adequate texture as long as it fills the entire required area (e.g., the face of the wall).<br />
Nontextured material properties—Materials such as glass, reflective metals, a mirror,<br />
or a light-emitting surface do not need a textured image as long as an appropriate color<br />
is chosen for them and the rendering software deals <strong>with</strong> physical parameters such as<br />
translucency, reflectivity, light-emitting properties, and surface light scattering.<br />
As demonstrated, it may be necessary to use an image-based texture along <strong>with</strong> these<br />
material properties to get the desired effect.<br />
In general, it can be stated that adding reflectivity, translucency, and any other physical<br />
properties to a texture invariably increases rendering time. Therefore, if a material is farther<br />
away from the viewpoint or a material is not reflective at all, it is typically sufficient<br />
to use the unmodified <strong>SketchUp</strong> materials in your rendering software.<br />
The images in Figure 5.66 show a few materials that can be created by rendering software.<br />
They are (top, left to right): a default <strong>SketchUp</strong> color rendered as a matte material, a<br />
shiny plastic, a colored glass; (bottom, left to right): fully reflective mirror, a light-emitting<br />
material, and surface-textured water (notice the ripples).<br />
Components of a Material<br />
Let’s look at the components that make up a material and discuss the various options related<br />
to them.<br />
Depending on your rendering software, you have either very detailed or very little control<br />
over all these parameters. The upside of having rendering software that lets you control<br />
many material parameters is that you have ultimate flexibility and you can affect appearance<br />
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