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The Linear Effects

Some Examples

Here are some examples of the linear effect`s.

• Negative
  This simple effect has one input and one output. As it simply `negates` the colors there are no further settings. In the example Image we used the Stream buffer as input and as output.
  
• Rotate
  This effect has one input, one output and some settings, the angle to be rotated around and some other things. In this example we used Temp1 as input and Stream as output. Furtheron we choose a angle of 45 degrees to rotate around.
  
• Rotate with variable
  Now we use the same rotate effect but we apply a variable which changes the Angle value frame by frame. First we press on the `V` gadget beside the Angle Gadget. Then the Variable Select Window appears where you could select a existing variable.
  

  As there is no variable we have to create one and press on the `Create` button.

  

  We select `Ramp` and as unit `Angle` so WF knows automatically that we want for the start point 0 degrees and for the end point 360 degrees. As this is o.k. for us we press `o.k.` and the following window opens.

  

  This is the envelope of the variable. On the x axis you see the frames and on the y axis you see the corresponding values. We do not want to insert some other points, so we just press `Use`.
  Now we see that the Variable Select Window has changed:

  

  We press `Apply` and so we tell Wildfire to use this variable.

  

  Inside the angle gadget you see that the variable is selected!

• Merge
  This is our example for a effect using more than one input buffer, the merge effect. It combins two images by simply putting them side by side or on top of eachother.
  

  We select as first input the buffer `Stream` and as second input the buffer `Temp1`. As output we choose the buffer `Stream` and select the horizontal Effect mode (side by side) and that`s it.

• Compose
  The last exmpl is our Composse Effect. This one is used to compose two images. You can choose a foreground and a background image. Furtheron there is a mix value which defines how much you can look through the foreground image. If you use a variable with a start value of 0 at the first frame and an end value of 100 at the last frame you fade between the foreground and the background within your selected frames.
  

  As background we used the Stream buffer, as foreground the Temp1 buffer. As output we selected the Stream buffer again. Using a mix value of 50% you can look through the foreground image and see the background image just as good as the foreground image.
  Furtheron we selected horizontal and vertical centering. The image size of th result is the same like the image size of the background image. If the foreground image has not the same size than it is centered in front of the background image if this options are selected.

This are the main things you have to know about the effects inside the linear mode. Try it out and enjoy working with the special effects.

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