• Matt (12/12) Feb 06 2023 I am (still) writing a 3D graphics engine, and was considering my
• Hipreme (10/22) Feb 06 2023 Use classes. Mixin template are only relevant to types which

Matt <webwraith fastmail.fm> writes:

I am (still) writing a 3D graphics engine, and was considering my 
choices for a scene graph.

Originally, I was going to use classes derived from my base 
SceneNode class for the nodes of the graph, but would this 
instead be a better situation to use template mixins instead of 
potentially having to include a lot of information in the base 
class? Or should I go with the traditional "everything is derived 
from the base class"?

I understand if this is light on details, I'll try and provide 
more if necessary, but I'm really not far into the design beyond 
this, and was wondering which would make for an easier path in 
the future

Hipreme <msnmancini hotmail.com> writes:

On Monday, 6 February 2023 at 12:22:19 UTC, Matt wrote:
 I am (still) writing a 3D graphics engine, and was considering 
 my choices for a scene graph.

 Originally, I was going to use classes derived from my base 
 SceneNode class for the nodes of the graph, but would this 
 instead be a better situation to use template mixins instead of 
 potentially having to include a lot of information in the base 
 class? Or should I go with the traditional "everything is 
 derived from the base class"?

 I understand if this is light on details, I'll try and provide 
 more if necessary, but I'm really not far into the design 
 beyond this, and was wondering which would make for an easier 
 path in the future

Use classes. Mixin template are only relevant to types which 
understands the mixin template or when you want to create a 
similar object with similar behavior, but they mustn't be the 
same thing. That means, you need to ducktype everything in order 
to work which could bring a template hell in your code. Unless 
you try to do generics in your code or make it componetized 
rather than inherited, but that could affect your coding style by 
manually passing the node that your object has, this can be quite 
the manual work though.