reduce re-implementation of common templates

this issue is intended for collecting small patterns that are heavily/frequently used within webgl-operates code basis. I would like to see these "snippets" replaced by, e.g., some form of meta programming, transpiling, or something similar ...

Setter only setting when different:
```TypeScript
set object(object: Type) {
if (object === this._object) {
return;
}
this._object = object;

/* bookmark alteration or trigger some update/recomputation ... */
...
}
```

No files, tests, or entry points are named. First inventory the repeated setter pattern across the TypeScript codebase and determine whether a specific metaprogramming or transpiling approach is wanted; the issue is complete only when the scope and replacement strategy are defined.

Written by the indexing model from the issue text.