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fix(leader): correct property behavior

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Hakan Seven committed 2026-08-28 19:40:38 +03:00
2 parents e37491c523 d6a824e224
commit a0c270c20d
34 files changed
+3992 -1082
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src/entities/leader.rs
+2 -4
View File
@@ -272,8 +272,7 @@ fn properties(leader: &Leader) -> Vec<PropSection> {
(vi + 1).to_string()
};
// Geometry sits right after General — a leader owns editable path vertices,
// navigated one at a time by the Current Vertex spinner.
// Geometry exposes one editable vertex at a time.
let mut geometry = vec![stepper(t!("Current Vertex").as_ref(), "current_vertex", vertex_label)];
if let Some(v) = leader.vertices.get(vi) {
geometry.push(edit(t!("Vertex X").as_ref(), "vertex_x", v.x));
@@ -285,8 +284,7 @@ fn properties(leader: &Leader) -> Vec<PropSection> {
geometry.push(ro(t!("Vertex Z").as_ref(), "vertex_z", String::new()));
}
// Misc: Dim style (upgraded to a dropdown by the panel builder), the
// combined path/arrow Type, and annotative state (from the dim style).
// The panel builder resolves the dimension style and annotative state.
let misc = vec![
Property {
label: t!("Dim style").into_owned(),
src/entities/multileader.rs
+300 -77
View File
@@ -1,7 +1,9 @@
use acadrust::entities::{
FlowDirectionType, LeaderContentType, LineSpacingStyle, MultiLeader, MultiLeaderPathType,
TextAlignmentType, TextAttachmentDirectionType, TextAttachmentType,
BlockContentConnectionType, FlowDirectionType, LeaderContentType, LineSpacingStyle,
MultiLeader, MultiLeaderPathType, MultiLeaderPropertyOverrideFlags, TextAlignmentType,
TextAttachmentDirectionType, TextAttachmentType,
};
use cadkernel::geom2d::Transform;
use crate::entities::text_support::{
layout_mtext, resolve_text_style, MTextRenderOpts, MTextVAnchor, ResolvedTextStyle,
@@ -904,9 +906,7 @@ fn properties(ml: &MultiLeader) -> Vec<PropSection> {
// ── Leaders ──────────────────────────────────────────────────────────
// Landing rows are folded in here: the standalone "Leader Structure" group
// is a style-dialog tab, not a palette group.
let leaders = PropSection {
title: t!("Leaders").into_owned(),
props: vec![
let mut leader_props = vec![
choice(
t!("Leader type").as_ref(),
"path_type",
@@ -923,20 +923,34 @@ fn properties(ml: &MultiLeader) -> Vec<PropSection> {
Property {
label: t!("Leader lineweight").into_owned(),
field: "line_weight",
value: PropValue::LwChoice(ml.line_weight),
value: PropValue::FieldLwChoice {
field: "line_weight",
value: ml.line_weight,
},
},
// Arrowhead block name resolved by the panel builder (default "Closed filled").
ro(t!("Arrowhead").as_ref(), "arrowhead_handle", "Closed filled"),
edit(t!("Arrowhead size").as_ref(), "arrowhead_size", ml.arrowhead_size),
edit(t!("Arrowhead Size").as_ref(), "arrowhead_size", ml.arrowhead_size),
bool_toggle(t!("Horizontal Landing").as_ref(), "enable_dogleg", ml.enable_dogleg),
num_row(
t!("Landing distance").as_ref(),
"landing_distance",
ml.dogleg_length,
if ml.enable_dogleg { ml.dogleg_length } else { 0.0 },
ml.enable_dogleg,
),
bool_toggle(t!("Leader extension").as_ref(), "enable_landing", ml.enable_landing),
],
];
// The extension is an MText-only landing option. It is absent for block
// content and whenever the horizontal landing itself is disabled.
if ml.content_type == LeaderContentType::MText && ml.enable_dogleg {
leader_props.push(bool_toggle(
t!("Leader extension").as_ref(),
"extend_leader_to_text",
ml.extend_leader_to_text,
));
}
let leaders = PropSection {
title: t!("Leaders").into_owned(),
props: leader_props,
};
// ── Text (shown only for MText content) ──────────────────────────────
@@ -988,6 +1002,18 @@ fn properties(ml: &MultiLeader) -> Vec<PropSection> {
attach_dir_str(&ml.text_attachment_direction),
&["Horizontal", "Vertical"],
),
edit(
t!("Landing gap").as_ref(),
"landing_gap",
ctx.landing_gap / ctx.scale_factor.max(1.0e-12),
),
bool_toggle(t!("Text frame").as_ref(), "text_frame", ml.text_frame),
],
};
let mut text = text;
let attachment_insert = text.props.len().saturating_sub(2);
let attachment_rows = match ml.text_attachment_direction {
TextAttachmentDirectionType::Horizontal => vec![
choice(
t!("Left Attachment").as_ref(),
"text_left_attachment",
@@ -1000,10 +1026,23 @@ fn properties(ml: &MultiLeader) -> Vec<PropSection> {
attachment_str(&ml.text_right_attachment),
&ATTACH_LABELS,
),
edit(t!("Landing gap").as_ref(), "landing_gap", ctx.landing_gap),
bool_toggle(t!("Text frame").as_ref(), "text_frame", ml.text_frame),
],
TextAttachmentDirectionType::Vertical => vec![
choice(
t!("Top Attachment").as_ref(),
"text_top_attachment",
attachment_str(&ml.text_top_attachment),
&ATTACH_LABELS,
),
choice(
t!("Bottom Attachment").as_ref(),
"text_bottom_attachment",
attachment_str(&ml.text_bottom_attachment),
&ATTACH_LABELS,
),
],
};
text.props.splice(attachment_insert..attachment_insert, attachment_rows);
// ── Block ────────────────────────────────────────────────────────────
let block = PropSection {
@@ -1014,29 +1053,16 @@ fn properties(ml: &MultiLeader) -> Vec<PropSection> {
"block_content_handle",
hexh(ml.block_content_handle),
),
ro(
t!("Block connection").as_ref(),
choice(
t!("Attachment").as_ref(),
"block_connection_type",
format!("{:?}", ml.block_connection_type),
),
ro(
t!("Block color").as_ref(),
"block_content_color",
format!("{:?}", ml.block_content_color),
),
ro(
t!("Block scale").as_ref(),
"block_scale",
format!(
"{:.3} × {:.3} × {:.3}",
ml.block_scale.x, ml.block_scale.y, ml.block_scale.z
),
),
edit(
t!("Block rotation").as_ref(),
"block_rotation",
ml.block_rotation.to_degrees(),
match ml.block_connection_type {
BlockContentConnectionType::BasePoint => "Insertion point",
BlockContentConnectionType::BlockExtents => "Extents",
},
&["Extents", "Insertion point"],
),
edit(t!("Scale").as_ref(), "block_scale", ml.block_scale.x),
],
};
@@ -1067,7 +1093,9 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"text_height" => {
if let Some(v) = f64(value) {
ml.text_height = v;
ml.context.text_height = v;
ml.context.text_height = v * ml.context.scale_factor.max(1.0e-12);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_HEIGHT);
}
}
"text_x" => {
@@ -1093,7 +1121,9 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
!ml.text_frame
} else {
value == "true"
}
};
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_FRAME);
}
"path_type" => {
ml.path_type = match value {
@@ -1101,19 +1131,40 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"None" => MultiLeaderPathType::Invisible,
_ => MultiLeaderPathType::StraightLineSegments,
};
for root in &mut ml.context.leader_roots {
for line in &mut root.lines {
line.path_type = ml.path_type;
line.override_flags.insert(
acadrust::entities::LeaderLinePropertyOverrideFlags::PATH_TYPE,
);
}
}
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::PATH_TYPE);
}
"enable_landing" => {
ml.enable_landing = if value == "toggle" {
!ml.enable_landing
} else {
value == "true"
}
};
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::ENABLE_LANDING);
}
"enable_dogleg" => {
ml.enable_dogleg = if value == "toggle" {
!ml.enable_dogleg
} else {
value == "true"
};
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::ENABLE_DOGLEG);
}
"extend_leader_to_text" => {
ml.extend_leader_to_text = if value == "toggle" {
!ml.extend_leader_to_text
} else {
value == "true"
}
}
"enable_annotation_scale" => {
@@ -1130,39 +1181,130 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
value == "true"
}
}
"background_mask_fill_on" => {
ml.context.background_mask_fill_on = if value == "toggle" {
!ml.context.background_mask_fill_on
} else {
value == "true"
}
}
"background_scale_factor" => {
if let Some(v) = f64(value) {
if v > 0.0 {
ml.context.background_scale_factor = v;
}
}
}
"background_transparency" => {
if let Ok(v) = value.trim().parse::<i32>() {
ml.context.background_transparency = v.clamp(0, 90);
}
}
"dogleg_length" => {
if let Some(v) = f64(value) {
ml.dogleg_length = v;
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::LANDING_DISTANCE);
}
}
"arrowhead_size" => {
if let Some(v) = f64(value) {
ml.arrowhead_size = v;
ml.context.arrowhead_size = v * ml.context.scale_factor.max(1.0e-12);
for root in &mut ml.context.leader_roots {
for line in &mut root.lines {
line.arrowhead_size = v;
line.override_flags.insert(
acadrust::entities::LeaderLinePropertyOverrideFlags::ARROWHEAD_SIZE,
);
}
}
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::ARROWHEAD_SIZE);
}
}
"scale_factor" => {
if let Some(v) = f64(value) {
ml.scale_factor = v;
if v > 0.0 {
let old = ml.context.scale_factor.max(1.0e-12);
let ratio = v / old;
ml.scale_factor = v;
ml.context.scale_factor = v;
ml.context.arrowhead_size *= ratio;
ml.context.text_height *= ratio;
ml.context.landing_gap *= ratio;
ml.block_scale.x *= ratio;
ml.block_scale.y *= ratio;
ml.block_scale.z *= ratio;
ml.context.block_content_scale = ml.block_scale;
if let Some(root) = ml.context.leader_roots.first() {
let anchor = root.connection_point;
for point in [
&mut ml.context.content_base_point,
&mut ml.context.text_location,
&mut ml.context.block_content_location,
] {
point.x = anchor.x + (point.x - anchor.x) * ratio;
point.y = anchor.y + (point.y - anchor.y) * ratio;
point.z = anchor.z + (point.z - anchor.z) * ratio;
}
}
for root in &mut ml.context.leader_roots {
root.landing_distance *= ratio;
}
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::SCALE_FACTOR);
}
}
}
"landing_distance" => {
if let Some(v) = f64(value) {
ml.dogleg_length = v;
if let Some(root) = ml.context.leader_roots.first_mut() {
root.landing_distance = v;
let display = v * ml.context.scale_factor.max(1.0e-12);
for root in &mut ml.context.leader_roots {
root.landing_distance = display;
}
place_content_after_landing(ml);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::LANDING_DISTANCE);
}
}
"landing_gap" => {
if let Some(v) = f64(value) {
ml.context.landing_gap = v;
ml.context.landing_gap = v * ml.context.scale_factor.max(1.0e-12);
place_content_after_landing(ml);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::LANDING_GAP);
}
}
"block_rotation" => {
if let Some(v) = f64(value) {
ml.block_rotation = v.to_radians();
ml.context.block_rotation = ml.block_rotation;
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::BLOCK_CONTENT_ROTATION);
}
}
"block_scale" => {
if let Some(v) = f64(value) {
if v > 0.0 {
ml.block_scale = acadrust::types::Vector3::new(v, v, v);
ml.context.block_content_scale = ml.block_scale;
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::BLOCK_CONTENT_SCALE);
}
}
}
"block_connection_type" => {
ml.block_connection_type = if value == "Insertion point" {
BlockContentConnectionType::BasePoint
} else {
BlockContentConnectionType::BlockExtents
};
ml.context.block_connection_type = ml.block_connection_type;
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::BLOCK_CONTENT_CONNECTION);
}
"conn_x" => {
if let (Some(v), Some(root)) = (f64(value), ml.context.leader_roots.first_mut()) {
root.connection_point.x = v;
@@ -1181,18 +1323,26 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"text_left_attachment" => {
ml.text_left_attachment = parse_attachment(value);
ml.context.text_left_attachment = parse_attachment(value);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_LEFT_ATTACHMENT);
}
"text_right_attachment" => {
ml.text_right_attachment = parse_attachment(value);
ml.context.text_right_attachment = parse_attachment(value);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_RIGHT_ATTACHMENT);
}
"text_top_attachment" => {
ml.text_top_attachment = parse_attachment(value);
ml.context.text_top_attachment = parse_attachment(value);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_TOP_ATTACHMENT);
}
"text_bottom_attachment" => {
ml.text_bottom_attachment = parse_attachment(value);
ml.context.text_bottom_attachment = parse_attachment(value);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_BOTTOM_ATTACHMENT);
}
"text_alignment" => {
ml.text_alignment = match value {
@@ -1205,6 +1355,8 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"Right" => TextAlignmentType::Right,
_ => TextAlignmentType::Left,
};
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_ALIGNMENT);
}
"text_flow_direction" => {
ml.context.text_flow_direction = match value {
@@ -1218,6 +1370,16 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"Vertical" => TextAttachmentDirectionType::Vertical,
_ => TextAttachmentDirectionType::Horizontal,
};
if ml.text_attachment_direction == TextAttachmentDirectionType::Vertical {
ml.enable_dogleg = false;
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::ENABLE_DOGLEG);
}
for root in &mut ml.context.leader_roots {
root.text_attachment_direction = ml.text_attachment_direction;
}
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_ATTACHMENT_DIRECTION);
}
"line_space_style" => {
ml.context.line_spacing_style = match value {
@@ -1233,6 +1395,13 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
"text_rotation" => {
if let Some(v) = f64(value) {
ml.context.text_rotation = v.to_radians();
ml.context.text_direction = acadrust::types::Vector3::new(
ml.context.text_rotation.cos(),
ml.context.text_rotation.sin(),
0.0,
);
ml.property_override_flags
.insert(MultiLeaderPropertyOverrideFlags::TEXT_ANGLE);
}
}
"line_spacing" => {
@@ -1254,6 +1423,27 @@ fn apply_geom_prop(ml: &mut MultiLeader, field: &str, value: &str) {
}
}
fn place_content_after_landing(ml: &mut MultiLeader) {
let Some(root) = ml.context.leader_roots.first() else {
return;
};
let length = (root.direction.x * root.direction.x + root.direction.y * root.direction.y).sqrt();
let (ux, uy) = if length > 1.0e-12 {
(root.direction.x / length, root.direction.y / length)
} else {
(1.0, 0.0)
};
let distance = root.landing_distance.max(0.0) + ml.context.landing_gap.max(0.0);
let location = acadrust::types::Vector3::new(
root.connection_point.x + ux * distance,
root.connection_point.y + uy * distance,
root.connection_point.z,
);
ml.context.content_base_point = location;
ml.context.text_location = location;
ml.context.block_content_location = location;
}
fn parse_attachment(s: &str) -> TextAttachmentType {
match s {
"Top of top line" => TextAttachmentType::TopOfTopLine,
@@ -1758,9 +1948,7 @@ impl MultiLeaderTess for MultiLeader {
}
}
// Vertically-attached leaders (text above/below) have no dogleg:
// the leader meets the text edge directly, so the short horizontal
// dash would be a stray mark AutoCAD never draws.
// Vertically attached leaders meet the text edge directly.
let vertical_attach = matches!(
ml.text_attachment_direction,
acadrust::entities::multileader::TextAttachmentDirectionType::Vertical
@@ -1785,11 +1973,7 @@ impl MultiLeaderTess for MultiLeader {
// for a rotated leader that is the angled baseline, not world
// X. Roots without a usable direction keep the legacy
// horizontal toward the text side.
let (ux, uy) = ml
.context
.leader_roots
.first()
.map(|r| (r.direction.x, r.direction.y))
let (ux, uy) = Some((root.direction.x, root.direction.y))
.filter(|(x, y)| (x * x + y * y).sqrt() > 1e-9)
.map(|(x, y)| {
let l = (x * x + y * y).sqrt();
@@ -1804,6 +1988,15 @@ impl MultiLeaderTess for MultiLeader {
points.push(nan);
points.push(cp_f);
points.push(landing_end);
if ml.extend_leader_to_text {
let gap = ml.context.landing_gap.max(0.0)
* context_scale_correction as f64;
points.push([
(text_loc_w.x - ux * gap) as f32,
(text_loc_w.y - uy * gap) as f32,
text_loc_w.z as f32,
]);
}
}
}
@@ -1856,31 +2049,66 @@ impl MultiLeaderTess for MultiLeader {
// synthetic Insert supplies that context to the shared scene graph;
// every child then uses its normal tessellator.
if ml.content_type == LeaderContentType::Block && ml.context.has_block_contents {
let block_name = match ml.block_content_handle {
let block_record = match ml.block_content_handle {
Some(h) if !h.is_null() => document
.block_records
.iter()
.find(|br| br.handle == h)
.map(|br| br.name.clone()),
.cloned(),
_ => None,
};
if let Some(block_name) = block_name {
if let Some(block_record) = block_record {
let block_name = block_record.name.clone();
let block_color = if selected {
line_color
} else {
color_or_inherit(&ml.block_content_color, entity_color)
};
let mut synth_ins =
acadrust::entities::Insert::new(block_name, ml.context.block_content_location);
let mut insertion = ml.context.block_content_location;
if ml.block_connection_type == BlockContentConnectionType::BlockExtents {
let mut bounds = [f32::MAX, f32::MAX, f32::MIN, f32::MIN];
for entity_handle in &block_record.entity_handles {
if let Some(entity) = document.get_entity(*entity_handle) {
let aabb = crate::scene::convert::tess::entity_aabb(entity);
if aabb != WireModel::UNBOUNDED_AABB {
bounds[0] = bounds[0].min(aabb[0]);
bounds[1] = bounds[1].min(aabb[1]);
bounds[2] = bounds[2].max(aabb[2]);
bounds[3] = bounds[3].max(aabb[3]);
}
}
}
if bounds[0] <= bounds[2] && bounds[1] <= bounds[3] {
let to_block = Transform::rotation(-ml.block_rotation);
let from_left = ml
.context
.leader_roots
.first()
.map_or(true, |root| {
to_block.apply_vector([
root.direction.x,
root.direction.y,
])[0]
>= 0.0
});
let anchor_x = if from_left { bounds[0] } else { bounds[2] } as f64;
let anchor_y = ((bounds[1] + bounds[3]) * 0.5) as f64;
let local_x =
(anchor_x - block_record.base_point.x) * ml.block_scale.x;
let local_y =
(anchor_y - block_record.base_point.y) * ml.block_scale.y;
let rotated = Transform::rotation(ml.block_rotation)
.apply_vector([local_x, local_y]);
insertion.x -= rotated[0];
insertion.y -= rotated[1];
}
}
let mut synth_ins = acadrust::entities::Insert::new(block_name, insertion);
synth_ins.set_x_scale(ml.block_scale.x);
synth_ins.set_y_scale(ml.block_scale.y);
synth_ins.set_z_scale(ml.block_scale.z);
synth_ins.rotation = ml.block_rotation;
synth_ins.common.layer = ml.common.layer.clone();
// block_connection_type (BlockExtents vs BasePoint) chooses the
// anchor when *creating* the multileader; at render time the
// file's stored leader endpoints already encode that choice.
let _ = ml.block_connection_type;
let depths = rustc_hash::FxHashMap::default();
let graph = crate::scene::render_graph::RenderSceneGraph::new(
document,
@@ -1956,12 +2184,7 @@ impl MultiLeaderTess for MultiLeader {
let local_ins_x = (ins.x) as f32;
let z = (ins.z) as f32;
// Rotation: the annotation context is AutoCAD's BAKED display
// state — text_direction / text_rotation already reflect whatever
// the style's angle setting produced at edit time. Re-deriving
// from ml.text_angle_type here (e.g. forcing Horizontal to 0)
// un-rotated leaders whose stored context is angled; the angle
// type only guides recomputation during edits, not display.
// The context stores the resolved display rotation.
let td = ctx.text_direction;
let mut rot = if td.x.abs() > 1e-9 || td.y.abs() > 1e-9 {
(td.y as f32).atan2(td.x as f32)
@@ -2013,14 +2236,14 @@ impl MultiLeaderTess for MultiLeader {
// anchor within the text block (Left/Center/Right) — honour it
// instead of guessing from the leader side.
use acadrust::entities::multileader::{
TextAttachmentDirectionType, TextAttachmentPointType,
TextAttachmentDirectionType,
};
// The context's attachment point exists in every DWG version;
// the entity-level copy only exists from R2010 on.
let h_anchor: f32 = match ctx.text_attachment_point {
TextAttachmentPointType::Left => 0.0,
TextAttachmentPointType::Center => 0.5,
TextAttachmentPointType::Right => 1.0,
let h_anchor: f32 = match ctx.text_alignment {
TextAlignmentType::Left => 0.0,
TextAlignmentType::Center => 0.5,
TextAlignmentType::Right => 1.0,
};
// Pick the vertical-anchor attachment based on text_attachment_direction:
// Horizontal — leader attaches left/right; use ml.text_left_attachment
@@ -2273,14 +2496,9 @@ impl MultiLeaderTess for MultiLeader {
// Text frame / background-fill rectangle in local frame, then rotated to WCS.
if ml.text_frame || ctx.background_fill_enabled {
// Frame/fill offset from the glyphs: the context's landing gap
// (AutoCAD spaces the box by exactly that), with the old
// quarter-height heuristic as the no-gap fallback.
let pad = if ctx.landing_gap > 0.0 {
ctx.landing_gap as f32
} else {
height * 0.25
};
// Border offset is a scale factor around the laid-out text box.
let pad = height
* ((ctx.background_scale_factor.max(1.0) as f32 - 1.0) * 0.5);
// Box the glyphs that were actually laid out (valid for
// vertical flow too); the metric-derived box is only the
// no-glyph fallback.
@@ -2311,11 +2529,16 @@ impl MultiLeaderTess for MultiLeader {
// Background fill — emit two triangles; renders under the text strokes.
if ctx.background_fill_enabled {
let fill_color = if selected {
let mut fill_color = if selected {
line_color
} else if ctx.background_mask_fill_on {
bg_color
} else {
color_or_inherit(&ctx.background_fill_color, entity_color)
};
fill_color[3] *=
(1.0 - ctx.background_transparency.clamp(0, 90) as f32 / 100.0)
.clamp(0.1, 1.0);
let fill_tris: Vec<[f32; 3]> = vec![
wcs_corners[0],
wcs_corners[1],