The Projective Geometry Playground is a web based application to do experiments with mathematical projections of images.The projective geometry playground runs offline in browser and learner can define a projection as mathematical mapping and visualized the result in HTML canvas. This allows visual debugging of mathamtical mapping.
The repository contains a LibreOffice Calc Angle of View Calculator. File: calc/angle_of_view_calculator.ods
The Projective Geometry Playground was created as an learning environment for a Wikiversity Learning about Equirectangular Projection