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Blender 2.5 Materials and Textures Cookbook by Colin Litster

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How to animate transparency in a texture

Using the color ramp shader to change color over time has been shown to be very useful. Previous recipes demonstrate how alpha values within the ramp can help textures show through the ramp colors. We can take this one stage further and apply full transparency animated across the material.

This is very useful to the 3D designer. Using this tool enables us to create many objects that would be difficult using direct modeling. Adding the chance to animate the transparency over time provides even more opportunities.

We could use the technique to animate a bug eating its way through a leaf, or the autumn season progressing across the same leaf. What about a seamless portal opening on a spaceship smooth sphere? ...

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