For Interactive graphics progam using Processing Language $,$ I need help with project ideas and a handrawn sketch if possible. The task is to create a object$-$based graphics application. $($An object$-$based graphics program allows drawing rectangles,circles,etc. and change them afterwards$($size$,$position,color,stroke, etc.$)).$

The user can select a graphics primitive out of three options and place that object on the canvas. $($Similar to drawing in Powerpoint$).$

$2.$ The user can select a graphical object and change its properties$($atleast two properties$)$

$3.$ You enable saving the objects into a file or a SQLite database$($You have to find a good file format$/$table structure$)$

$4.$ You can load the saved files into your application and all objects are retrieved$($and changeable again$)$

$5.$ You extend the application by one middle$-$complexity, sense$-$making feature $($e$.$g$.$ adding sophisticated graphical primitives $($e$.$g$.$ stars, gears, smileys$),$ rotation of objects$)$