Adobe after effects 5.0_ effects part 5

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  • 3D Channel effects read and manipulate the additional channels of information, includingz- depth, surface normals, object ID, texture coordinates, background color, unclamped RGB, and material ID. You can matte 3D elements along a z axis, insert other elements in a 3D scene, blur areas in a 3D scene, isolate 3D elements, apply a foggy effect with depth, and extract 3D channel information for use as parameters in other effects.

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  • The Basic 3D effect manipulates a layer in an imaginary 3D space. You can rotate your image around horizontal and vertical axes and move it toward or away from you. With Basic 3D, you can also create a specular highlight to give the effect of light reflecting off a rotated surface. The light source for the specular highlight is always above, behind, and to the left of the viewer. Because the light comes from above, the image must be tilted backward to see this reflection. This can enhance the realism of the 3D appearance. The specular highlight can be viewed...

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  • Use this effect to create animations in which a large number of similar objects must be animated indepen- dently, such as a swarm of bees. Particle effects simulate the physical interactions between objects in the real world. For example, if you want to create a snowfall effect, you normally have to animate many individual snowflake layers manually, hoping that you animated each layer’s motion path realistically.

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  • This effect creates the effect of card choreography by segmenting layers into numerous cards and then controlling all geometric aspects of the cards using a second layer. For example, Card Dance can simulate an extruded pin sculpture, a crowd “doing the wave,” or letters floating on the surface of a pond.

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  • The Brush Strokes effect applies a rough painted look to an image. You can also use this effect to achieve a pointillist style by setting the length of the brush strokes to 0 and increasing the stroke density. Although you specify the direction of strokes, they are scattered randomly by a small amount to give a more natural effect. This effect alters the alpha channel, as well as the color channels; if you have masked out a portion of the image, the brush strokes “paint” over the edges of the mask....

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  • This Key creates transparency from opposite starting points by dividing an image into two mattes, Matte Partial A and Matte Partial B. Matte Partial B bases the transparency on the specified key color, and Matte Partial A bases transparency on areas of the image that do not contain a second, different color. By combining the two mattes into a third matte, called the alpha( ) matte, the Color Difference Key creates well-defined transparency values.

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