From da7eb66a4d5abfade54d82c8a1c855814bd465ef Mon Sep 17 00:00:00 2001
From: ramox81 <184937705+ramox81@users.noreply.github.com>
Date: Tue, 13 Oct 2026 16:42:31 +0300
Subject: [PATCH] DWF underlays: read the W2D set-origin opcode

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 src/scene/model/underlay_vector/dwf.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/scene/model/underlay_vector/dwf.rs b/src/scene/model/underlay_vector/dwf.rs
index 6ca10a5c8..aa1274a5e 100644
--- a/src/scene/model/underlay_vector/dwf.rs
+++ b/src/scene/model/underlay_vector/dwf.rs
@@ -636,6 +636,13 @@ mod w2d {
                     let size = r.i32()?;
                     r.i = r.i.checked_add(size.max(0) as usize)?;
                 }
+                b'O' => {
+                    // Set origin: the absolute point later relative
+                    // coordinates continue from (plot-optimized streams
+                    // start each drawing with it).
+                    r.i += 1;
+                    at = [r.i32()? as f64, r.i32()? as f64];
+                }
                 b'V' => {
                     visible = true;
                     r.i += 1;