Circle / Regular Polygon Tool

The Circle/Regular Polygon tool draws regular polygons and circles on your map. In a regular polygon, all sides are equal in length. Press C or B+4 to select the tool with a keyboard shortcut.

Drawing Shapes

Click and drag to draw a shape. While drawing, the current radius is displayed in grid cells as a label on screen. This can be used to measure your shapes as you draw them.

Tool Settings

Mode

Sets whether the tool draws or erases. To toggle between Draw and Erase mode with a keyboard shortcut, press E.

Snap

When Snap is on, shapes align to the grid based on the current Division setting. To toggle snapping on or off with a keyboard shortcut, press S.

Division

Sets the snapping resolution as a fraction of a grid cell. Works the same way as in the Rectangle tool. To set the division with a keyboard shortcut, press Shift+S followed by a number representing the denominator. For example, Shift+S then 2 sets 1/2 cell snapping, and Shift+S then 3 sets 1/3 cell snapping.

Sides

Sets the number of sides of the polygon. Use the slider in Tool Settings, or type a number directly into the input field. To change the side count with a keyboard shortcut, press [ to decrease or ] to increase, or press a number key to set a specific value.

Set the side count to 1 to draw a circle.

Draw to

Sets whether the shape is oriented to a point or a flat edge. This is useful for correctly orienting hex-shaped rooms. Point produces a vertical orientation, and Edge produces a horizontal orientation.

Rough mode

When Rough mode is on, an additional step allows you to control how irregular the shape's outline appears. After drawing your shape, a line connects your cursor to the edge of the shape. The further you move your cursor away from the shape, the more irregular the outline becomes. This mode is useful for drawing caves or natural terrain. To toggle Rough mode on or off with a keyboard shortcut, press Shift+R.