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fix: apply global LTSCALE to linetype pattern rendering

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Entity linetype_scale is a per-entity multiplier applied on top of the
document-level $LTSCALE header variable. The previous code used only the
entity scale (defaulting to 1.0), ignoring $LTSCALE entirely. Drawings
with a non-default LTSCALE showed dash patterns at the wrong size.

Effective scale is now: document.header.linetype_scale * entity linetype_scale.
Applied in both render::render_style_for and the complex-linetype path in
tessellate_entity.

Fixes part of #10

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-05-01 21:13:56 +03:00
commit 93614ab554
2 changed files with 3 additions and 2 deletions
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3
src/scene/render.rs
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@ -213,7 +213,8 @@ pub(super) fn render_style_for(
};
let lt_name = linetype_name_for(document, e);
let lt_scale = e.common().linetype_scale as f32;
// Effective scale = global LTSCALE × per-entity scale (both default to 1.0).
let lt_scale = document.header.linetype_scale as f32 * e.common().linetype_scale as f32;
let (pattern_length, pattern) = resolve_pattern(&document.line_types, lt_name, lt_scale);
let line_weight_px = {