astrowisp.fake_image.psf_piece module

Class Inheritance Diagram

Inheritance diagram of ABC, PSFPiece

Define the base class for pieces of piecewise PSFs.

class astrowisp.fake_image.psf_piece.PSFPiece[source]

Bases: ABC

Inheritance diagram of astrowisp.fake_image.psf_piece.PSFPiece

Declare a minimum interface for pieces of PiecewisePSF.

abstract __call__(x, y)[source]

Evaluate the piece at the given position.

abstract integrate(left, bottom, width, height)[source]

Evaluate the integral of the cell function over a rectangle.

Parameters:

  • left – The x-coordinate of the left boundary of the rectangle to integrate over.

  • bottom – The y-coordinate of the bottom boundary of the rectangle to integrate over.

  • width – The x-size of the rectangle to integrate over.

  • height – The y-size of the rectangle to integrate over.

Returns:

The integral of the bi-cubic polynomial function defining this piece of the PSF over the specified rectangle, with no consideration of whether the rectangle fits within the piece.

Return type:

float