Circle Effect - Adobe AFTER EFFECTS 7.0 Manual

Specifies the horizontal width of the checkerboard pattern. If you choose Width Slider in the Size From menu,
Width
this value determines both the width and height of the checkerboard pattern. If you choose Width & Height Sliders
in the Size From menu, this value determines the width only.
Determines the vertical height of the checkerboard squares when you choose Width & Height Sliders in the
Height
Size From menu.
Specifies the size of the edge feather of the checkerboard pattern. Expand this control to reveal the
Feather
Width and Height sliders. Set Width and Height values independently, or set them both to the same value for
a uniform feather.
Specifies the color of one set of the checkerboard squares. The other set of squares is always transparent.
Color
Specifies the transparency of the checkerboard pattern.
Opacity
Specifies the blending mode the effect uses to create an interaction between the checkerboard
Blending Mode
pattern and the original layer. All of these blending modes work identically to the ones in the Timeline panel, except
the default None mode, which renders the checkerboard pattern only.

Circle effect

The Circle effect creates a customizable solid circle or ring.
This effect works with 8-bpc color.
Original image (left), circle with no edge (center), circle specifying a Thickness & Feather *Radius edge
Adjust the following controls for the Circle effect:
Specifies the center point of the circle.
Center
Specifies the size of the radius, in pixels. If you set the radius to be larger than your original source layer, some
Radius
or all of the circle's edge may fall outside the composition frame, depending upon the location of the circle's center
point.
Specifies the shape and edge treatment of the circle. Depending upon the option, the slider changes its name
Edge
to correspond to the option. Choose one of the following options from the menu, and use the slider to adjust the
option:
•
Creates a solid circle.
None
•
Creates a ring. The difference in the values set for this control and Radius determines the ring's
Edge Radius
width.
•
Creates a ring with a specified thickness. The corresponding slider measures the ring thickness in
Thickness
pixels.
•
Creates a ring that uses the Radius value to determine the Thickness value. As you increase
Thickness * Radius
the Radius value of the ring, the Thickness value increases proportionally.
•
Thickness & Feather * Radius
Feather values. As you increase the Radius value, the Thickness and Feather values scale proportionally.
Creates a ring that uses the Radius value to determine both the Thickness and
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