OneCAD-Draft/src/entities/solid3d.rs

// Grippable + PropertyEditable for Solid3D, Region, Body.
//
// Geometry lives in ACIS data — we cannot edit it via the properties panel.
// We expose the point_of_reference as a translate grip and show ACIS size
// as read-only info.  Grip translate also updates wire points so the wire
// fallback stays in sync; the caller (scene/mod.rs apply_grip) translates
// the MeshModel vertices to match.

use acadrust::entities::{Body, Region, Solid3D, Surface};
use glam::Vec3;

use crate::command::EntityTransform;
use crate::entities::common::{center_grip, edit_prop as edit, parse_f64, ro_prop as ro};
use crate::entities::traits::{Grippable, PropertyEditable, Transformable};
use crate::scene::model::object::{GripApply, GripDef, PropSection};

/// Shared transform for the ACIS volume entities. Translate / rotate / scale
/// delegate to acadrust (which composes the move into the solid's ACIS
/// placement), and mirror delegates via a reflection transform. Without this
/// the entity dispatcher treated solids as non-transformable, so a moved or
/// pasted solid stayed at its original ACIS placement.
macro_rules! impl_acis_transformable {
    ($ty:ty) => {
        impl Transformable for $ty {
            fn apply_transform(&mut self, t: &EntityTransform) {
                crate::scene::view::transform::apply_standard_entity_transform(self, t, |e, p1, p2| {
                    let m = crate::scene::view::transform::reflection_about_xy_line(p1, p2);
                    acadrust::Entity::apply_transform(e, &m);
                });
            }
        }
    };
}
impl_acis_transformable!(Solid3D);
impl_acis_transformable!(Region);
impl_acis_transformable!(Body);
impl_acis_transformable!(Surface);

// ── shared helpers ────────────────────────────────────────────────────────────

fn dvec3(v: &acadrust::types::Vector3) -> glam::DVec3 {
    glam::DVec3::new(v.x, v.y, v.z)
}

fn translate_wires(wires: &mut Vec<acadrust::entities::Wire>, d: Vec3) {
    for wire in wires.iter_mut() {
        for pt in wire.points.iter_mut() {
            pt.x += d.x as f64;
            pt.y += d.y as f64;
            pt.z += d.z as f64;
        }
    }
}

// ── Solid3D ───────────────────────────────────────────────────────────────────

impl Grippable for Solid3D {
    fn grips(&self) -> Vec<GripDef> {
        vec![center_grip(0, dvec3(&self.point_of_reference))]
    }

    fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
        if grip_id != 0 {
            return;
        }
        if let GripApply::Translate(d) = apply {
            self.point_of_reference.x += d.x as f64;
            self.point_of_reference.y += d.y as f64;
            self.point_of_reference.z += d.z as f64;
            translate_wires(&mut self.wires, d.as_vec3());
        }
    }
}

impl PropertyEditable for Solid3D {
    fn geometry_properties(&self, _text_style_names: &[String]) -> Vec<PropSection> {
        let history = match self.history_handle {
            Some(h) if !h.is_null() => format!("{:X}", h.value()),
            _ => "None".to_string(),
        };
        vec![
            PropSection {
                title: "Solid History".into(),
                props: vec![
                    ro("History", "s3d_history", history),
                    ro("Show History", "s3d_show_history", String::new()),
                ],
            },
            PropSection {
                title: "Geometry".into(),
                props: vec![
                    edit("Position X", "s3d_px", self.point_of_reference.x),
                    edit("Position Y", "s3d_py", self.point_of_reference.y),
                    edit("Position Z", "s3d_pz", self.point_of_reference.z),
                ],
            },
        ]
    }

    fn apply_geom_prop(&mut self, field: &str, value: &str) {
        let Some(v) = parse_f64(value) else {
            return;
        };
        match field {
            "s3d_px" => self.point_of_reference.x = v,
            "s3d_py" => self.point_of_reference.y = v,
            "s3d_pz" => self.point_of_reference.z = v,
            _ => {}
        }
    }
}

// ── Region ────────────────────────────────────────────────────────────────────

impl Grippable for Region {
    fn grips(&self) -> Vec<GripDef> {
        vec![center_grip(0, dvec3(&self.point_of_reference))]
    }

    fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
        if grip_id != 0 {
            return;
        }
        if let GripApply::Translate(d) = apply {
            self.point_of_reference.x += d.x as f64;
            self.point_of_reference.y += d.y as f64;
            self.point_of_reference.z += d.z as f64;
            translate_wires(&mut self.wires, d.as_vec3());
        }
    }
}

impl PropertyEditable for Region {
    fn geometry_properties(&self, _text_style_names: &[String]) -> Vec<PropSection> {
        vec![PropSection {
            title: "Geometry".into(),
            props: vec![
                ro("Area", "rgn_area", String::new()),
                ro("Perimeter", "rgn_perimeter", String::new()),
            ],
        }]
    }

    fn apply_geom_prop(&mut self, _field: &str, _value: &str) {}
}

// ── Body ──────────────────────────────────────────────────────────────────────

impl Grippable for Body {
    fn grips(&self) -> Vec<GripDef> {
        vec![center_grip(0, dvec3(&self.point_of_reference))]
    }

    fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
        if grip_id != 0 {
            return;
        }
        if let GripApply::Translate(d) = apply {
            self.point_of_reference.x += d.x as f64;
            self.point_of_reference.y += d.y as f64;
            self.point_of_reference.z += d.z as f64;
            translate_wires(&mut self.wires, d.as_vec3());
        }
    }
}

impl PropertyEditable for Body {
    fn geometry_properties(&self, _text_style_names: &[String]) -> Vec<PropSection> {
        vec![PropSection {
            title: "Solid History".into(),
            props: vec![
                ro("History", "bdy_history", String::new()),
                ro("Show History", "bdy_show_history", String::new()),
            ],
        }]
    }

    fn apply_geom_prop(&mut self, _field: &str, _value: &str) {}
}

// ── Accessors for the Solid3D / Region / Body trio ─────────────────────────
//
// These three entity types share a common subset of fields (ACIS data
// + point_of_reference + wires fallback). Code that needs to treat them
// uniformly (mesh tess dispatch, fallback wires, grip translate) used
// to repeat a three-arm `match entity` block at every callsite — the
// helpers below collapse those to a single call.

use crate::scene::model::mesh_model::MeshLodSet;
use crate::scene::convert::solid3d_tess;
use acadrust::{types::Vector3, EntityType};

/// `point_of_reference` of an ACIS-backed volume entity, if applicable.
pub fn point_of_reference(e: &EntityType) -> Option<&Vector3> {
    match e {
        EntityType::Solid3D(s) => Some(&s.point_of_reference),
        EntityType::Region(r) => Some(&r.point_of_reference),
        EntityType::Body(b) => Some(&b.point_of_reference),
        _ => None,
    }
}

/// Pre-stored edge-wire fallback list (used when the SAT/SAB kernel
/// can't produce a mesh — drawings authored by SOLVIEW / 3DPLOT carry
/// these explicitly).
pub fn fallback_wires(e: &EntityType) -> Option<&[acadrust::entities::Wire]> {
    match e {
        EntityType::Solid3D(s) => Some(&s.wires),
        EntityType::Region(r) => Some(&r.wires),
        EntityType::Body(b) => Some(&b.wires),
        EntityType::Surface(s) => Some(&s.wires),
        _ => None,
    }
}

/// Run the appropriate `solid3d_tess::tessellate_*` for the entity,
/// returning `None` for non-volume entities or when the kernel fails.
pub fn tessellate_volume(e: &EntityType, color: [f32; 4], facet_res: f64) -> Option<MeshLodSet> {
    match e {
        EntityType::Solid3D(s) => solid3d_tess::tessellate_solid3d(s, color, facet_res),
        EntityType::Region(r) => solid3d_tess::tessellate_region(r, color, facet_res),
        EntityType::Body(b) => solid3d_tess::tessellate_body(b, color, facet_res),
        EntityType::Surface(s) => solid3d_tess::tessellate_surface(s, color, facet_res),
        _ => None,
    }
}