c1b33677e2
Replace the small QCAD CXF stroke-font set with the full LibreCAD LFF font library (46 fonts) and a new LFF parser/engine in src/scene/lff.rs. The parser reads the `[hex] char` glyph blocks, tessellates `,A<bulge>` arcs, and resolves `C<hex>` glyph references. Per LibreCAD's RS_Polyline convention a vertex's bulge curves the segment ending at that vertex — getting this wrong turned round letters like O into sideways capsules. Font name resolution mirrors LibreCAD: match by file stem, map common AutoCAD/DXF SHX names (txt, isocp, complex, italic, gothic*, gost, …) to the nearest LFF family, and fall back to `standard`. A missing glyph in the chosen family falls back to the broad `unicode` font so accented/Cyrillic/Greek text still renders. Cap height stays 9 units, so the text scale is unchanged. All text consumers move from cxf:: to lff::; complex linetypes still render embedded text but no longer draw embedded shapes (LibreCAD ships no shape file). The CXF module and every *.cxf asset are removed, and the MText / text style font pickers list the LFF families. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
366 lines
14 KiB
Rust
366 lines
14 KiB
Rust
use acadrust::entities::Tolerance;
|
||
use glam::Vec3;
|
||
|
||
use crate::command::EntityTransform;
|
||
use crate::entities::common::{edit_prop as edit, ro_prop as ro, square_grip};
|
||
use crate::entities::traits::{Grippable, PropertyEditable, Transformable, TruckConvertible};
|
||
use crate::scene::acad_to_truck::{TextStroke, TruckEntity, TruckObject};
|
||
use crate::scene::object::{GripApply, GripDef, PropSection};
|
||
use crate::scene::wire_model::SnapHint;
|
||
use crate::scene::{lff, transform};
|
||
|
||
// ── GDT text parser ───────────────────────────────────────────────────────────
|
||
|
||
/// Parse a DXF tolerance text string into rows of cell strings.
|
||
///
|
||
/// DXF format: `{\Fgdt;p}%%v0.5%%vA%%vB%%v%%v^J{\Fgdt;j}%%v0.1%%vA%%v%%v%%v`
|
||
/// - `^J` → row separator
|
||
/// - `%%v` → cell separator within a row
|
||
/// - `{\Fgdt;X}` → GDT symbol X (mapped to a text label)
|
||
fn parse_gdt_rows(raw: &str) -> Vec<Vec<String>> {
|
||
raw.split("^J")
|
||
.filter(|row| !row.trim().is_empty())
|
||
.map(|row| {
|
||
row.split("%%v")
|
||
.map(|cell| substitute_gdt_codes(cell.trim()))
|
||
.collect()
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Replace `{\Fgdt;X}` sequences with a short ASCII label and strip other
|
||
/// MTEXT-style format codes `{\...}`.
|
||
fn substitute_gdt_codes(s: &str) -> String {
|
||
let mut out = String::new();
|
||
let mut chars = s.chars().peekable();
|
||
while let Some(ch) = chars.next() {
|
||
if ch == '{' {
|
||
// Collect to closing '}'
|
||
let mut inner = String::new();
|
||
let mut depth = 1usize;
|
||
for c in chars.by_ref() {
|
||
match c {
|
||
'{' => {
|
||
depth += 1;
|
||
inner.push(c);
|
||
}
|
||
'}' => {
|
||
depth -= 1;
|
||
if depth == 0 {
|
||
break;
|
||
}
|
||
inner.push(c);
|
||
}
|
||
_ => {
|
||
inner.push(c);
|
||
}
|
||
}
|
||
}
|
||
// Is it a GDT font switch?
|
||
if let Some(rest) = inner.strip_prefix("\\Fgdt;") {
|
||
// rest is the symbol letter(s)
|
||
if let Some(sym_char) = rest.chars().next() {
|
||
out.push_str(gdt_char_to_ascii(sym_char));
|
||
}
|
||
}
|
||
// other format codes: skip
|
||
} else {
|
||
out.push(ch);
|
||
}
|
||
}
|
||
out
|
||
}
|
||
|
||
/// Map a GDT font character to a short ASCII approximation.
|
||
fn gdt_char_to_ascii(c: char) -> &'static str {
|
||
match c {
|
||
'a' => "SRT", // Straightness
|
||
'b' => "FLT", // Flatness
|
||
'c' => "FLT", // Flatness
|
||
'd' => "PSF", // Profile of Surface
|
||
'e' => "CYL", // Cylindricity
|
||
'f' => "PRL", // Profile of Line
|
||
'g' => "CIR", // Circularity
|
||
'h' => "PAR", // Parallelism
|
||
'i' => "SYM", // Symmetry
|
||
'j' => "PRP", // Perpendicularity
|
||
'k' => "PLN", // Profile of Line
|
||
'l' => "(L)", // LMC
|
||
'm' => "(M)", // MMC / Diameter
|
||
'n' => "ANG", // Angularity
|
||
'o' => "(o)", // at maximum material boundary
|
||
'p' => "POS", // Position
|
||
'q' => "(q)",
|
||
'r' => "RUN", // Circular Runout
|
||
's' => "(S)", // RFS / Regardless of Feature Size
|
||
't' => "TRN", // Total Runout
|
||
'u' => "CON", // Concentricity
|
||
'v' => "(v)",
|
||
'w' => "(w)",
|
||
_ => "?",
|
||
}
|
||
}
|
||
|
||
// ── Feature-control frame builder ─────────────────────────────────────────────
|
||
|
||
/// Tessellate a Tolerance entity into CXF-style polyline output.
|
||
///
|
||
/// Returns (`box_lines`, `text_strokes`) where:
|
||
/// - `box_lines` — 3-D line segments forming the outer border and dividers
|
||
/// - `text_strokes` — 2-D polylines from the CXF tessellator
|
||
///
|
||
/// Since TruckObject has either Lines (3-D) or Text (2-D CXF), we render the
|
||
/// box frame via a separate Lines path (added by the caller) and the text cells
|
||
/// via the Text path. For simplicity this function packs everything into a
|
||
/// single Vec<Vec<[f32;2]>> by projecting the box lines to 2-D and using NaN
|
||
/// polylines as separators — exactly what the Text wire-builder does.
|
||
fn tessellate_tolerance(tol: &Tolerance) -> Vec<Vec<[f32; 2]>> {
|
||
if tol.text.is_empty() {
|
||
return vec![];
|
||
}
|
||
|
||
let rows = parse_gdt_rows(&tol.text);
|
||
if rows.is_empty() {
|
||
return vec![];
|
||
}
|
||
|
||
// ── Metrics ──────────────────────────────────────────────────────────
|
||
let h = if tol.text_height > 1e-6 {
|
||
tol.text_height as f32
|
||
} else {
|
||
2.5_f32
|
||
};
|
||
// DIMGAP — stored on the entity (resolved from the dim style at creation).
|
||
// Fall back to AutoCAD's 0.35 × height convention only when missing.
|
||
let gap = if tol.dimension_gap > 1e-6 {
|
||
tol.dimension_gap as f32
|
||
} else {
|
||
(h * 0.35).max(0.1)
|
||
};
|
||
let cell_h = h + 2.0 * gap;
|
||
let char_w = h * 0.65;
|
||
let min_cell_w = h * 1.4;
|
||
|
||
// Column widths: max across all rows
|
||
let max_cols = rows.iter().map(|r| r.len()).max().unwrap_or(0);
|
||
let mut col_widths: Vec<f32> = vec![0.0_f32; max_cols];
|
||
for row in &rows {
|
||
for (ci, cell) in row.iter().enumerate() {
|
||
let w = (cell.len() as f32 * char_w).max(min_cell_w);
|
||
if ci < col_widths.len() {
|
||
col_widths[ci] = col_widths[ci].max(w);
|
||
}
|
||
}
|
||
}
|
||
let total_w: f32 = col_widths.iter().sum();
|
||
let total_h = cell_h * rows.len() as f32;
|
||
|
||
// ── Transform helpers (local space — translation applied in tessellate.rs) ──
|
||
let angle = (tol.direction.y as f32).atan2(tol.direction.x as f32);
|
||
let (sa, ca) = angle.sin_cos();
|
||
|
||
// Rotate only; origin is kept as f64 and applied later with full precision.
|
||
let rot = |x: f32, y: f32| -> [f32; 2] { [x * ca - y * sa, x * sa + y * ca] };
|
||
|
||
let mut out: Vec<Vec<[f32; 2]>> = Vec::new();
|
||
|
||
// ── Outer border ──────────────────────────────────────────────────────
|
||
out.push(vec![
|
||
rot(0.0, 0.0),
|
||
rot(total_w, 0.0),
|
||
rot(total_w, total_h),
|
||
rot(0.0, total_h),
|
||
rot(0.0, 0.0),
|
||
]);
|
||
|
||
// ── Row separators ─────────────────────────────────────────────────────
|
||
for ri in 1..rows.len() {
|
||
let y = cell_h * ri as f32;
|
||
out.push(vec![rot(0.0, y), rot(total_w, y)]);
|
||
}
|
||
|
||
// ── Column dividers ────────────────────────────────────────────────────
|
||
let mut x_cursor = 0.0_f32;
|
||
for ci in 0..col_widths.len().saturating_sub(1) {
|
||
x_cursor += col_widths[ci];
|
||
for ri in 0..rows.len() {
|
||
if ci + 1 < rows[ri].len() {
|
||
let y0 = cell_h * ri as f32;
|
||
let y1 = y0 + cell_h;
|
||
out.push(vec![rot(x_cursor, y0), rot(x_cursor, y1)]);
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── Text content per cell ─────────────────────────────────────────────
|
||
for (ri, row) in rows.iter().enumerate() {
|
||
let row_y = cell_h * ri as f32 + gap;
|
||
let mut cell_x = 0.0_f32;
|
||
for (ci, cell) in row.iter().enumerate() {
|
||
let cw = if ci < col_widths.len() {
|
||
col_widths[ci]
|
||
} else {
|
||
0.0
|
||
};
|
||
if !cell.is_empty() {
|
||
let text_w = cell.len() as f32 * char_w;
|
||
let tx = cell_x + (cw - text_w) * 0.5;
|
||
// Tessellate text in local frame then transform
|
||
let local_strokes =
|
||
lff::tessellate_text_ex([0.0, 0.0], h, 0.0, 1.0, 0.0, "txt", cell);
|
||
for polyline in local_strokes {
|
||
let transformed: Vec<[f32; 2]> = polyline
|
||
.into_iter()
|
||
.map(|[px, py]| rot(px + tx, py + row_y))
|
||
.collect();
|
||
if !transformed.is_empty() {
|
||
out.push(transformed);
|
||
}
|
||
}
|
||
}
|
||
cell_x += cw;
|
||
}
|
||
}
|
||
|
||
out
|
||
}
|
||
|
||
// ── TruckConvertible ──────────────────────────────────────────────────────────
|
||
|
||
impl TruckConvertible for Tolerance {
|
||
fn to_truck(&self, _document: &acadrust::CadDocument) -> Option<TruckEntity> {
|
||
if self.text.is_empty() {
|
||
return None;
|
||
}
|
||
|
||
let snap_pt = Vec3::new(
|
||
self.insertion_point.x as f32,
|
||
self.insertion_point.y as f32,
|
||
self.insertion_point.z as f32,
|
||
);
|
||
|
||
// Build the feature-control frame in local space; origin stored as f64.
|
||
let strokes = tessellate_tolerance(self);
|
||
let origin = [self.insertion_point.x, self.insertion_point.y];
|
||
|
||
Some(TruckEntity {
|
||
object: TruckObject::Text(vec![TextStroke { strokes, origin, color: None }]),
|
||
snap_pts: vec![(snap_pt, SnapHint::Insertion)],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
fill_tris: vec![],
|
||
})
|
||
}
|
||
}
|
||
|
||
// ── Grippable ─────────────────────────────────────────────────────────────────
|
||
|
||
impl Grippable for Tolerance {
|
||
fn grips(&self) -> Vec<GripDef> {
|
||
vec![square_grip(
|
||
0,
|
||
Vec3::new(
|
||
self.insertion_point.x as f32,
|
||
self.insertion_point.y as f32,
|
||
self.insertion_point.z as f32,
|
||
),
|
||
)]
|
||
}
|
||
|
||
fn apply_grip(&mut self, grip_id: usize, apply: GripApply) {
|
||
if grip_id == 0 {
|
||
match apply {
|
||
GripApply::Translate(d) => {
|
||
self.insertion_point.x += d.x as f64;
|
||
self.insertion_point.y += d.y as f64;
|
||
self.insertion_point.z += d.z as f64;
|
||
}
|
||
GripApply::Absolute(p) => {
|
||
self.insertion_point.x = p.x as f64;
|
||
self.insertion_point.y = p.y as f64;
|
||
self.insertion_point.z = p.z as f64;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── PropertyEditable ──────────────────────────────────────────────────────────
|
||
|
||
impl PropertyEditable for Tolerance {
|
||
fn geometry_properties(&self, _text_style_names: &[String]) -> PropSection {
|
||
PropSection {
|
||
title: "Geometry".into(),
|
||
props: vec![
|
||
ro("Text", "tol_text", self.text.clone()),
|
||
edit("Insert X", "tol_ix", self.insertion_point.x),
|
||
edit("Insert Y", "tol_iy", self.insertion_point.y),
|
||
edit("Insert Z", "tol_iz", self.insertion_point.z),
|
||
ro(
|
||
"Dim Style",
|
||
"tol_dim_style",
|
||
if self.dimension_style_name.is_empty() {
|
||
"(default)".to_string()
|
||
} else {
|
||
self.dimension_style_name.clone()
|
||
},
|
||
),
|
||
ro(
|
||
"Dim Style Handle",
|
||
"tol_dim_style_handle",
|
||
match self.dimension_style_handle {
|
||
Some(h) if !h.is_null() => format!("{:X}", h.value()),
|
||
_ => "(none)".to_string(),
|
||
},
|
||
),
|
||
edit("Text Height", "tol_text_height", self.text_height),
|
||
edit("Dim Gap", "tol_dim_gap", self.dimension_gap),
|
||
ro(
|
||
"Direction",
|
||
"tol_direction",
|
||
format!(
|
||
"{:.3}, {:.3}, {:.3}",
|
||
self.direction.x, self.direction.y, self.direction.z
|
||
),
|
||
),
|
||
ro(
|
||
"Normal",
|
||
"tol_normal",
|
||
format!(
|
||
"{:.3}, {:.3}, {:.3}",
|
||
self.normal.x, self.normal.y, self.normal.z
|
||
),
|
||
),
|
||
],
|
||
}
|
||
}
|
||
|
||
fn apply_geom_prop(&mut self, field: &str, value: &str) {
|
||
let Ok(v) = value.trim().parse::<f64>() else {
|
||
return;
|
||
};
|
||
match field {
|
||
"tol_ix" => self.insertion_point.x = v,
|
||
"tol_iy" => self.insertion_point.y = v,
|
||
"tol_iz" => self.insertion_point.z = v,
|
||
"tol_text_height" if v > 0.0 => self.text_height = v,
|
||
"tol_dim_gap" => self.dimension_gap = v,
|
||
_ => {}
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── Transformable ─────────────────────────────────────────────────────────────
|
||
|
||
impl Transformable for Tolerance {
|
||
fn apply_transform(&mut self, t: &EntityTransform) {
|
||
transform::apply_standard_entity_transform(self, t, |entity, p1, p2| {
|
||
transform::reflect_xy_point(
|
||
&mut entity.insertion_point.x,
|
||
&mut entity.insertion_point.y,
|
||
p1,
|
||
p2,
|
||
);
|
||
});
|
||
}
|
||
}
|