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fix(plot): match PDF output to viewport

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Refs #618
This commit is contained in:
Hakan Seven committed 2026-08-01 20:05:38 +03:00
1 parent 90a5495601
commit 6c62daf260
6 files changed
+142 -90
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src/scene/model/hatch_model.rs
+18 -17
View File
@@ -210,16 +210,12 @@ impl HatchModel {
self.pattern_segments_with_dot_length(None)
}
/// Plot variant of [`Self::pattern_segments`] that renders PAT zero-length
/// dash entries at a caller-provided world length. Screen rendering snaps
/// these entries to one pixel; plot callers know the model-to-paper scale
/// and can therefore choose the equivalent physical mark without tying its
/// size to the pattern period.
pub(crate) fn pattern_segments_for_plot(
&self,
dot_length: f64,
) -> Vec<[[f64; 2]; 2]> {
self.pattern_segments_with_dot_length(Some(dot_length.max(1e-9)))
/// Plot variant of [`Self::pattern_segments`] that preserves PAT
/// zero-length dash entries as coincident endpoints. The PDF exporter can
/// then paint a round point; turning them into short segments here makes
/// point-only patterns such as AR-CONC visibly look like tiny lines.
pub(crate) fn pattern_segments_for_plot(&self) -> Vec<[[f64; 2]; 2]> {
self.pattern_segments_with_dot_length(Some(0.0))
}
fn pattern_segments_with_dot_length(
@@ -436,13 +432,18 @@ impl HatchModel {
]);
}
} else if d == 0.0 && seg_t >= t0 - 1e-6 && seg_t <= t1 + 1e-6 {
let a = (seg_t - dot_len * 0.5).max(t0);
let b = (seg_t + dot_len * 0.5).min(t1);
if b > a {
segments.push([
[lx + a * cos_a, ly + a * sin_a],
[lx + b * cos_a, ly + b * sin_a],
]);
if plot_dot_length == Some(0.0) {
let point = [lx + seg_t * cos_a, ly + seg_t * sin_a];
segments.push([point, point]);
} else {
let a = (seg_t - dot_len * 0.5).max(t0);
let b = (seg_t + dot_len * 0.5).min(t1);
if b > a {
segments.push([
[lx + a * cos_a, ly + a * sin_a],
[lx + b * cos_a, ly + b * sin_a],
]);
}
}
}
seg_t += dl;