Change Details

This commit changes `CurveComponent` to store the new curve type by adding conversions to and from `CurveEval` in every node. This will temporarily make performance of curves in geometry nodes much worse, but as functionality is implemented for the new type and it is used in more places, performance will improve. We still use `CurveEval` for drawing curves, because the new structure has no evaluated points yet, existing curve types aren't supported for drawing in the viewport, and we need a `Curve` ID to draw curve edit mode selections at the moment anyway. The old curve component isn't removed yet, because it had special implementations for some attributes like position (also moving the handles) that will be implemented differently in the near future. TODO: - Bezier handle types - NURBS knots information

This commit changes `CurveComponent` to store the new curve type by adding conversions to and from `CurveEval` in most nodes. This will temporarily make performance of curves in geometry nodes much worse, but as functionality is implemented for the new type and it is used in more places, performance will become better than before. We still use `CurveEval` for drawing curves, because the new `Curves` data-block has no evaluated points yet. So the `Curve` ID is still generated for rendering in the same way as before. It's also still needed for drawing curve object edit mode overlays. The old curve component isn't removed yet, because it is still used to provide the attribute API used to implement the conversions back and forth. A few more attributes are added to make this possible: - `nurbs_weight`: The weight for each control point on NURBS curves (D12004) - `nurbs_order`: The order of the NURBS curve - `knots_mode`: This is less defined at the moment, but still necessary for conversion. - `handle_type_{left/right}`: An 8 bit integer attribute.

This commit changes `CurveComponent` to store the new curve type by adding conversions to and from `CurveEval` in everymost nodes. This will temporarily make performance of curves in geometry nodes much worse, but as functionality is implemented for the new type and it is used in more places, performance will improvebecome better than before. We still use `CurveEval` for drawing curves, because the new structure`Curves` data-block has no evaluated points yet,yet. existing cSo the `Curve types aren't supported for` ID is still generated drawfor rendering in the viewport,same way as before. and we need a `Curve` ID toIt's also still needed for draw curve editing mode selections at the moment anywaycurve object edit mode overlays. The old curve component isn't removed yet, because it had specialis still used to implementations for some attributes like position (also moving theprovide the attribute API used to implement the conversions back and handles) that will be implemented differently in the near futureforth. TODO:A few more attributes are added to make this possible: - Bezier handle types- `nurbs_weight`: The weight for each control point on NURBS curves (D12004) - NURBS knots information`nurbs_order`: The order of the NURBS curve - `knots_mode`: This is less defined at the moment, but still necessary for conversion. - `handle_type_{left/right}`: An 8 bit integer attribute.