Alpha上叠节点¶

Alpha上叠节点。

Alpha上叠节点 将一幅图像覆盖在另一幅图像之上。此节点不对图像的颜色进行处理。

范例¶

 使用Alpha上叠节点合成图像。 使用Alpha上叠节点在第11帧实现 穿透/透明 动画特效。

In this example, we use the Factor control to make a sheer cloth or onion-skin effect. This effect can be animated, allowing the observer to "see-through" walls (or any foreground object) by hooking up a Time node to feed the Factor socket as shown below. In this example, over the course of 30 frames, the Time node makes the Alpha Over node produce a picture that starts with the background cliff image, and slowly bleeds through the cube. This example shows frame 11 just as the cube starts to be revealed.