Circle

The Circle effect creates either a customizable solid circle or ring.


Original image (left), circle with no edge (center), circle specifying a Thickness & Feather *Radius edge

Adjust the following controls for the Circle effect:

Center

Specifies the center point of the circle.

Radius

Specifies the size of the radius, in pixels. (If you set the radius to be larger than your original source layer, either portions or all of the circle's edge may fall outside the composition frame, depending upon the location of the circle's center point.)

Edge

Specifies the shape and edge treatment of the circle. Depending upon the option, the slider changes its name to correspond to the option. Choose one of the following options from the menu, and use the slider to adjust the option:

• None creates a solid circle.
• Edge Radius creates a ring. The difference in the values set for this control and Radius determines the ring's width.
• Thickness creates a ring with a specified thickness. The corresponding slider measures the ring thickness in pixels.
• Thickness * Radius creates a ring that uses the Radius value to determine the Thickness value. As you increase the Radius value of the ring, the Thickness value increases proportionally.
• Thickness & Feather * Radius creates a ring that uses the Radius value to determine both the Thickness and Feather values. As you increase the Radius value, the Thickness and Feather values scale proportionally.

Feather

Specifies the amount of feather applied to the edge of the circle. Increasing this amount softens the edges of the circle, blending it with whatever appears behind it. Decreasing this amount sharpens the edge of the circle.

Note: Feather Inner Edge is disabled when Edge is set to None, since there is no inner edge on a solid circle.

Invert Circle

Specifies that the circle matte is inverted, if this box is checked.

Color

Specifies the color that fills the circle.

Opacity

Specifies the transparency of the circle.

Blending Mode

Specifies the blending mode that the effect uses to combine the circle and the original layer. All of these blending modes behave like those in the Timeline window, except for None, which displays only the circle, without the original layer.