[PD-dev] data-structure style arrays in c

[João Pais]

Assuming that this field is further developed, I wanted to leave a question that might (?) be relevant:
- when drawing arrays with encapsulated arrays, it's not possible to click-and-drag to change the array contents in the same way it can be done with normal (single-layered) arrays. Or, to click and type numerical values.

As a test you can have this patch from my data-structures workshop:
- open [pd graphic]
- you can click/drag the base array in the green line, but you can click/drag the arrays inside it
- to change these arrays one must go to [pd encapsulated-array], and select the elements through the program

I don't know if this is directly related with "multi-dim arrays", but I thought about warning about this. I haven't seen encapsulated arrays in any other patches, so I don't know if many people are aware of this.

Best,

João


> How do you do multi-dim arrays in c where each row can have a different number of columns?
>
> In Pd I would do this:
> [struct foo array a data]
>
> and:
>
> [struct data symbol svg_drawing_command array a the_data]
>
> and finally:
>
> [struct the_data float datum]
>
> In c I've done a character array, an int telling me how big the character array is, an array for the numbers >(actually a t_fielddesc array so they are settable per instance), and an int array to tell how many numbers per >command.  So if the command is "M 10 10 L 20 30 A 1 2 3 4 5 6 7", the char array stores "MLA" and the >array of numbers has "10 10 20 30 1 2 3 4 5 6 7".
>
> I'm sending path data to the gui using this, so I want it to be fast.  Is there a better way?
>
> -Jonathan
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