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CoordSys: pick a body first, x-ray the rest

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In an assembly the face you want for a mate connector is nearly always behind
another body, and a click only ever returns the frontmost hit. Hiding the
occluder from the Parts list works but means leaving the tool mid-pick.

The CoordSys card now carries a Body chooser. Pick a body and every other one
drops to 0.25 alpha AND stops catching clicks, so the wanted face is both
visible and reachable in one gesture. "(all)" restores normal picking.

Deliberately NOT hit cycling: repeated-click cycling was removed from solid
picking as a charter L5/§10 violation (DesignSketchTool.cpp, "NO CYCLE"), and
re-introducing it here would make "click a face" a multi-click gesture again.

Mechanics: DesignSketchTool::set_pick_only_body() gates body_pickable(), which
every pick path already consults; DesignCanvas::set_xray_focus() drives both it
and the per-body alpha in reload(). The chooser stays a pick FILTER only --
coordsys_body still comes from the actual pick, so nothing in the kernel moves.

Body focus follows the CoordSys card: open_tool() reads it back from the combo
rather than clearing outright, because editing a CoordSys feature loads the card
(and its body) before open_tool runs.

snaporca-bgvk. NOT COMPILED: deps/build lacks OpenVDB so the GUI tree will not
configure here; reviewed by diff only.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Tommaso Bianchi
2026-08-12 13:45:37 +02:00
co-authored by Claude Opus 5
parent 8ff7ba440d
commit 3eec65f2bd
6 changed files with 58 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/slic3r/GUI/DesignCanvas.cpp
+9
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@@ -296,6 +296,7 @@ void DesignCanvas::reload(bool keep_view)
if (b == m_hl_body_target) c = ColorRGBA(0.30f, 0.90f, 0.70f, 1.0f); // target = teal-green
else if (b == m_hl_body_tool) c = ColorRGBA(1.00f, 0.55f, 0.15f, 1.0f); // tool = orange
if (m_body_translucent) c.a(0.30f);
else if (m_xray_focus >= 0 && b != m_xray_focus) c.a(0.25f);
v->set_color(c);
}
} else if (obj_idx == 1) {
@@ -1050,6 +1051,14 @@ void DesignCanvas::set_body_translucent(bool on)
reload(true); // re-applies object-0 alpha so the solid fades for the fillet preview
}
void DesignCanvas::set_xray_focus(int body)
{
if (m_xray_focus == body) return;
m_xray_focus = body;
m_sketch_tool.set_pick_only_body(body);
reload(true); // re-applies per-body alpha so the non-focused bodies fade
}
void DesignCanvas::set_body_hidden(bool on)
{
if (m_body_hidden == on) return;