# Geometry Functions (`photutils.geometry`

)¶

## Introduction¶

The `photutils.geometry`

package contains low-level geometry functions
used mainly by `aperture_photometry`

.

## Reference/API¶

Geometry subpackage for low-level geometry functions.

### Functions¶

`circular_overlap_grid` (xmin, xmax, ymin, ...) |
Area of overlap between a circle and a pixel grid. |

`elliptical_overlap_grid` (xmin, xmax, ymin, ...) |
Area of overlap between an ellipse and a pixel grid. |

`rectangular_overlap_grid` (xmin, xmax, ymin, ...) |
Area of overlap between a rectangle and a pixel grid. |