first commit

src/entities/text.rs

@@ -0,0 +1,301 @@
+use acadrust::entities::{Text, TextHorizontalAlignment as HA, TextVerticalAlignment as VA};
+use glam::Vec3;
+
+use crate::command::EntityTransform;
+use crate::entities::common::{edit_prop as edit, parse_f64, square_grip};
+use crate::entities::text_support::{resolve_text_style, text_local_bounds};
+use crate::entities::traits::{Grippable, PropertyEditable, Transformable, TruckConvertible};
+use crate::scene::acad_to_truck::{TruckEntity, TruckObject};
+use crate::scene::cxf;
+use crate::scene::object::{GripApply, GripDef, PropSection, PropValue, Property};
+use crate::scene::wire_model::SnapHint;
+
+fn text_halign_str(a: &acadrust::entities::TextHorizontalAlignment) -> &'static str {
+    use acadrust::entities::TextHorizontalAlignment::*;
+    match a {
+        Left => "Left",
+        Center => "Center",
+        Right => "Right",
+        Aligned => "Aligned",
+        Middle => "Middle",
+        Fit => "Fit",
+    }
+}
+
+fn text_valign_str(a: &acadrust::entities::TextVerticalAlignment) -> &'static str {
+    use acadrust::entities::TextVerticalAlignment::*;
+    match a {
+        Baseline => "Baseline",
+        Bottom => "Bottom",
+        Middle => "Middle",
+        Top => "Top",
+    }
+}
+
+fn sync_text_alignment_point(t: &mut Text) {
+    let needs_alignment_point = !matches!(
+        (t.horizontal_alignment, t.vertical_alignment),
+        (HA::Left, VA::Baseline)
+    );
+    if needs_alignment_point {
+        if t.alignment_point.is_none() {
+            t.alignment_point = Some(t.insertion_point);
+        }
+    } else {
+        t.alignment_point = None;
+    }
+}
+
+fn to_truck(t: &Text, document: &acadrust::CadDocument) -> TruckEntity {
+    let snap_pt = Vec3::new(
+        t.insertion_point.x as f32,
+        t.insertion_point.y as f32,
+        t.insertion_point.z as f32,
+    );
+    let resolved_style = resolve_text_style(&t.style, document);
+    let font_name = resolved_style.font_name;
+    let width_factor = (if t.width_factor > 0.0 {
+        t.width_factor as f32
+    } else {
+        1.0
+    } * resolved_style.width_factor.max(0.01))
+    .clamp(0.01, 100.0);
+    let oblique_angle = t.oblique_angle as f32 + resolved_style.oblique_angle;
+    let anchor = match (
+        &t.horizontal_alignment,
+        &t.vertical_alignment,
+        &t.alignment_point,
+    ) {
+        (HA::Aligned | HA::Middle | HA::Fit, _, Some(a)) => [a.x as f32, a.y as f32],
+        (HA::Center | HA::Right, _, Some(a)) => [a.x as f32, a.y as f32],
+        (_, VA::Bottom | VA::Middle | VA::Top, Some(a)) => [a.x as f32, a.y as f32],
+        _ => [t.insertion_point.x as f32, t.insertion_point.y as f32],
+    };
+    let bounds = text_local_bounds(
+        &font_name,
+        &t.value,
+        t.height as f32,
+        width_factor,
+        oblique_angle,
+    );
+    let (anchor_local_x, anchor_local_y) = if let Some(([min_x, min_y], [max_x, max_y])) = bounds {
+        let ax = match t.horizontal_alignment {
+            HA::Left => min_x,
+            HA::Center | HA::Middle => (min_x + max_x) * 0.5,
+            HA::Right | HA::Aligned | HA::Fit => max_x,
+        };
+        let ay = match t.vertical_alignment {
+            VA::Baseline => 0.0,
+            VA::Bottom => min_y,
+            VA::Middle => (min_y + max_y) * 0.5,
+            VA::Top => max_y,
+        };
+        (ax, ay)
+    } else {
+        (0.0, 0.0)
+    };
+    let (cos_r, sin_r) = ((t.rotation as f32).cos(), (t.rotation as f32).sin());
+    let origin = [
+        anchor[0] - (anchor_local_x * cos_r - anchor_local_y * sin_r),
+        anchor[1] - (anchor_local_x * sin_r + anchor_local_y * cos_r),
+    ];
+    let strokes_2d = cxf::tessellate_text_ex(
+        origin,
+        t.height as f32,
+        t.rotation as f32,
+        width_factor,
+        oblique_angle,
+        &font_name,
+        &t.value,
+    );
+    TruckEntity {
+        object: TruckObject::Text(strokes_2d),
+        snap_pts: vec![(snap_pt, SnapHint::Insertion)],
+        tangent_geoms: vec![],
+        key_vertices: vec![],
+    }
+}
+
+fn grips(t: &Text) -> Vec<GripDef> {
+    let p = Vec3::new(
+        t.insertion_point.x as f32,
+        t.insertion_point.y as f32,
+        t.insertion_point.z as f32,
+    );
+    vec![square_grip(0, p)]
+}
+
+fn properties(t: &Text, text_style_names: &[String]) -> PropSection {
+    PropSection {
+        title: "Geometry".into(),
+        props: vec![
+            edit("Insert X", "ins_x", t.insertion_point.x),
+            edit("Insert Y", "ins_y", t.insertion_point.y),
+            edit("Insert Z", "ins_z", t.insertion_point.z),
+            edit("Height", "height", t.height),
+            edit("Rotation", "rotation", t.rotation.to_degrees()),
+            edit("Width Factor", "width_factor", t.width_factor),
+            edit(
+                "Oblique Angle",
+                "oblique_angle",
+                t.oblique_angle.to_degrees(),
+            ),
+            Property {
+                label: "H-Align".into(),
+                field: "h_align",
+                value: PropValue::Choice {
+                    selected: text_halign_str(&t.horizontal_alignment).to_string(),
+                    options: ["Left", "Center", "Right", "Aligned", "Middle", "Fit"]
+                        .into_iter()
+                        .map(str::to_string)
+                        .collect(),
+                },
+            },
+            Property {
+                label: "V-Align".into(),
+                field: "v_align",
+                value: PropValue::Choice {
+                    selected: text_valign_str(&t.vertical_alignment).to_string(),
+                    options: ["Baseline", "Bottom", "Middle", "Top"]
+                        .into_iter()
+                        .map(str::to_string)
+                        .collect(),
+                },
+            },
+            Property {
+                label: "Content".into(),
+                field: "content",
+                value: PropValue::EditText(t.value.clone()),
+            },
+            Property {
+                label: "Style".into(),
+                field: "style",
+                value: PropValue::Choice {
+                    selected: if t.style.trim().is_empty() {
+                        "Standard".into()
+                    } else {
+                        t.style.clone()
+                    },
+                    options: text_style_names.to_vec(),
+                },
+            },
+        ],
+    }
+}
+
+fn apply_geom_prop(t: &mut Text, field: &str, value: &str) {
+    match field {
+        "content" => {
+            t.value = value.to_string();
+            return;
+        }
+        "style" => {
+            t.style = value.to_string();
+            return;
+        }
+        "h_align" => {
+            t.horizontal_alignment = match value {
+                "Left" => HA::Left,
+                "Center" => HA::Center,
+                "Right" => HA::Right,
+                "Aligned" => HA::Aligned,
+                "Middle" => HA::Middle,
+                "Fit" => HA::Fit,
+                _ => return,
+            };
+            sync_text_alignment_point(t);
+            return;
+        }
+        "v_align" => {
+            t.vertical_alignment = match value {
+                "Baseline" => VA::Baseline,
+                "Bottom" => VA::Bottom,
+                "Middle" => VA::Middle,
+                "Top" => VA::Top,
+                _ => return,
+            };
+            sync_text_alignment_point(t);
+            return;
+        }
+        _ => {}
+    }
+    let Some(v) = parse_f64(value) else {
+        return;
+    };
+    match field {
+        "ins_x" => t.insertion_point.x = v,
+        "ins_y" => t.insertion_point.y = v,
+        "ins_z" => t.insertion_point.z = v,
+        "height" if v > 0.0 => t.height = v,
+        "rotation" => t.rotation = v.to_radians(),
+        "width_factor" if v > 0.0 => t.width_factor = v,
+        "oblique_angle" => t.oblique_angle = v.to_radians(),
+        _ => {}
+    }
+}
+
+fn apply_grip(t: &mut Text, _grip_id: usize, apply: GripApply) {
+    match apply {
+        GripApply::Absolute(p) => {
+            t.insertion_point.x = p.x as f64;
+            t.insertion_point.y = p.y as f64;
+            t.insertion_point.z = p.z as f64;
+        }
+        GripApply::Translate(d) => {
+            t.insertion_point.x += d.x as f64;
+            t.insertion_point.y += d.y as f64;
+            t.insertion_point.z += d.z as f64;
+        }
+    }
+}
+
+fn apply_transform(t: &mut Text, tr: &EntityTransform) {
+    crate::scene::transform::apply_standard_entity_transform(t, tr, |entity, p1, p2| {
+        crate::scene::transform::reflect_xy_point(
+            &mut entity.insertion_point.x,
+            &mut entity.insertion_point.y,
+            p1,
+            p2,
+        );
+        if let Some(ref mut a) = entity.alignment_point {
+            crate::scene::transform::reflect_xy_point(&mut a.x, &mut a.y, p1, p2);
+        }
+        let dx = (p2.x - p1.x) as f64;
+        let dy = (p2.y - p1.y) as f64;
+        let line_angle = dy.atan2(dx);
+        entity.rotation = 2.0 * line_angle - entity.rotation;
+        entity.oblique_angle = -entity.oblique_angle;
+    });
+}
+
+impl TruckConvertible for Text {
+    fn to_truck(&self, document: &acadrust::CadDocument) -> Option<TruckEntity> {
+        Some(to_truck(self, document))
+    }
+}
+
+impl Grippable for Text {
+    fn grips(&self) -> Vec<GripDef> {
+        grips(self)
+    }
+
+    fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
+        apply_grip(self, grip_id, apply);
+    }
+}
+
+impl PropertyEditable for Text {
+    fn geometry_properties(&self, text_style_names: &[String]) -> PropSection {
+        properties(self, text_style_names)
+    }
+
+    fn apply_geom_prop(&mut self, field: &str, value: &str) {
+        apply_geom_prop(self, field, value);
+    }
+}
+
+impl Transformable for Text {
+    fn apply_transform(&mut self, t: &EntityTransform) {
+        apply_transform(self, t);
+    }
+}