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Tutorials LightWave 3D THERE IS NO SPOON The Wonderful World of Weight Mapped Procedurals Qua Jan 26, 2011 1:48 am
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| by Steve Primeau |
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| Faced with the dilemma of creating a photo-realistic metal texture for an important focal piece of a recent project. I experimented with several techniques. Image maps weren’t able to bring me the realistic, random and complex layers of scratches – oil spots and discolorations I found upon close examination of a beat up old spoon’s surface. Weight maps, however, provided a ready solution for precise control over the dynamic & organic textures generated by the various procedural options in LightWave. This tutorial will show you the steps to follow in order to achieve a great look that is easy to recreate on your own.
 I’m selecting all the points inside the creases and crevasses of my model so I can apply a dark – unpolished look to these ‘hard to clean’ areas. I like to select a large square of points that will be affected by my material – then gradually apply the Set Map Value tool to the entire chunk, deselect the central row of points and apply a lower map value to the remaining selected points – continuing this pattern until I have a nicely shaded gradient application of the weight map. Continue applying your weight map in this fashion until you’re satisfied that all the areas you want to be affected by our procedurals are mapped. 
 Gradient Blending Mode: Alpha, Opacity: %100 Input Parameter: Weight Map Weight Map: DARK First Mark – Color, White -Alpha 100% - Parameter -100% Second Mark – Color, Black - Alpha 100% - Parameter -45% Third Mark – Color, White – Alpha 100% - Parameter 100% -Be sure to set the gradient input parameter to Weight Map and select our “DARK” texture from the drop-down that appears. Set this gradient layer’s blending mode to Alpha. Using the combination of these two layers repeated and modified in each of the surface property texture panels. My values will provide you with a good stepping off point to experimentation with perfecting the surface for your particular model. I’ve turned the Invert Layer box on for some of my gradient layers – this applies the procedural layer below it to the areas NOT weight mapped.  There you have it. Tight control over where procedurals have an effect. These weight maps can also be layered, so varying layers of influence can appear in the same section of your model. Take some time to experiment. I’d love to see what you come up with using this technique. Email me at [Tens de ter uma conta e sessão iniciada para poderes visualizar este link] . Be sure to check out Spoonman the movie here: |
