3D Animation, Key Framing: Animar Texturas [ Blogs experimental ] [ Blender ]

We have seen how animate using the technique of “Key Framing” checking in “keyframes” a state of the animation automatically interpolates the remaining frames in the animation.

The technique used is commonly used to define positions fundamentally, sizes and scale factors in the models (polygon meshes) we encourage, but is valid for any variable that governs some aspects of the animation, and could be lighting intensity, the object color, Physical properties etc..

Especially useful is the animation of the model textures, allowing to generate high impact visual effects.

For example, if we encourage a texture that affects the roughness of a surface (técnica de Bump Mapping) animated as we get results which is presented in the following image, that has varied from the lowest to highest possible value, cyclically, values “weight” texture in achieving the effect of roughness:

The way to operate in the case of animated textures not substantially different from that used to animate models surfaces. We will adjust the values ​​of the texture in a series of moments in time and add a new animation key associated with the values ​​we have defined. Therefore the difference is that instead of modifying the spatial variables that define the position of the vertices of a mesh, variables will encourage or parameters determining the characteristics of a texture.

Process texture animation

To animate need to work on the timeline (Time line) we use to define the animation keys using the model “Key Framing“.

We will stand (with mouse) in the frame where you want to insert the new key animation, and introduce the same.

In the illustrated case, has changed the value of “Nor” which is the variable that determines how the texture affects the modification of the “surface normal” in each of its points.

The color value of the texture used (in this case marble) becomes a variable associated with the roughness of the surface of the mesh that constitutes the model.

To insert the key we will place the mouse on the control (scrollbar) governing this variable, introduce the new value and press the key “I” (Insert key frame).

A menu will pop-up context sensitive allowing us to set the new password.

We can introduce all available keys for the “Texture mapping” selecting “All Mapping”.

Although currently only have modified a variable, This action allows us to identify the channels that are animatable by this technique, and we can see if we select on a window corresponding to the Editor “LPO Curve editor”:

This window allows editing the values ​​entered by editing control curves associated with each of the variables “Material” and “Texture” concerned, as discussed in a new article.

Can you think of applications that can be helpful to encourage a texture?

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