"jr" <cre### [at] gmailcom> wrote:
> hi,
>
> "ingo" <nomail@nomail> wrote:
> > ...
> >   object:
> >     sphere:
> >       center<0, 0, 0>
> >       radius<1>
> >       material:
>
> JSON has been mentioned elsewhere as a replacement (?) or as a component of the
> "new SDL".  it would (I guess) make a real good storage format for objects (like
> above), or materials/textures libraries, etc.
>

object and material are just containers, lists/arrays..
there are a few specialised ordered lists with an operator attached, union,
intersect etc.

A povObject/shape is like a specific composed dictionary/struct/record as is
texture. One could define it all in SQLite:

CREATE TABLE IF NOT EXISTS sphere(
  //centre: ah, there is no vector type but we could crate a table for that
         id INTEGER PRIMARY KEY NOT NULL,
       name TEXT UNIQUE,
     centre INTEGER REFERENCES vector(id),
     radius REAL DEFAULT 1.0,
   material INTEGER REFERENCES material(id)
)STRICT;

CREATE TABLE IF NOT EXISTS vector(
    id INTEGER PRIMARY KEY NOT NULL, // or use a string formatted as '<x,y,z>'?
     x REAL NOT NULL,
     y REAL NOT NULL,
     z REAL NOT NULL
)STRICT;

etc. etc. who needs type-systems and OOP if you have a database ;)

ingo

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