> For the complete documentation index, see [llms.txt](https://docs.flatredball.com/gum/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flatredball.com/gum/gum-tool/gum-elements/shape-properties/has-dropshadow.md). # Has Dropshadow {% hint style="info" %} `Has Dropshadow` is a shape property supported by Circle, Rectangle, ColoredCircle, RoundedRectangle, Arc, and Line. {% endhint %} ### Introduction `Has Dropshadow` controls whether a dropshadow is drawn below a shape. By default this value is false. The following image shows two Rectangles. The left with `Has Dropshadow` unchecked, the right with `Has Dropshadow` checked.

Two RoundedRectangle instances

Note that if an instance has a dropshadow, the dropshadow renders outside of the bounds of the instance.

Dark pixels from a dropshadow rendering below the bounds of a RoundedRectangle

Dropshadows draw as part of the object, so if multiple objects stack, their dropshadows also stack.

Multiple stacked ColoredRectangles with dropshadows

### `Dropshadow Offset X` and `Dropshadow Offset Y` `Dropshadow Offset X` and `Dropshadow Offset Y` control the position of the dropshadow relative to the main body of the instance. This value can be changed to move the dropshadow, which gives the element a sense of height.

Dropshadow Offset X and Dropshadow Offset Y change the dropshadow position

### `Dropshadow Blur` `Dropshadow Blur` controls the dropshadow edge softness. A value of 0 creates a sharp shadow, while a larger value increases blur.

Dropshadow Blur can be adjusted to make a dropshadow more blurry

{% hint style="info" %} `Dropshadow Blur` values roughly measure the number of pixels that it takes to interpolate the edge of a shadow from its full color to fully transparent. This value is not exact due to antialiasing. {% endhint %} ### `Dropshadow Alpha` `Dropshadow Alpha` controls the transparency of a dropshadow. A fully-opaque dropshadow has an alpha of 255. This value can be modified to decrease or increase the dropshadow's opacity.

Dropshadow Alpha adjusts the dropshadow transparency

### `Dropshadow Color` Dropshadow Color adjusts the dropshadow color independent of the shape's body color. Usually dropshadows are pure black with their transparency adjusted by `Dropshadow Alpha`, but they can also include other colors if needed.

Dropshadow color can be changed to create shadow/blur effects

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