mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
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Dion Moult
8b8fafa698
Renamed HeadlessSidecarBuilder to SidecarBuilder and reused it for live loads. SceneLoader now constructs one per stream load, forwards meshReady /instanceReady chunks alongside the viewport upload, and finalizes + writes the sidecar at onStreamerFinished — no more GPU readback path via ViewportWindow::snapshotModel (removed). Same code path now produces sidecars for both live loads and the .rdbview offline export. Sidecar use is opt-in per direction via SceneLoader::setShouldReadSidecar and setShouldWriteSidecar; both default off so embedders that don't want caching get a pure-streaming loader. ifcviewer-full and ifcviewer-minimal opt in. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
80 lines
3.7 KiB
C++
80 lines
3.7 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#ifndef SIDECARBUILDER_H
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#define SIDECARBUILDER_H
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#include "Federation.h"
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#include "GeometryStreamer.h"
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#include "InstancedGeometry.h"
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#include "SidecarCache.h"
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#include <QObject>
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#include <QString>
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#include <vector>
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// Assembles a .ifcview SidecarData from streamer output, then finalizes it
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// (LOD build, georef, packed elements) ready for writeSidecar() and/or
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// ViewportWindow::applyLodExtension(). Two use modes:
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//
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// 1. Live load — host (SceneLoader) drives its own GeometryStreamer and
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// forwards meshReady/instanceReady chunks via onMeshReady/onInstanceReady
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// while the viewport also consumes them. When the stream finishes the
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// host calls finalize(georef, elements) and writeSidecar() with the
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// returned data. No GPU readback involved.
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//
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// 2. Offline — build() owns a streamer, runs it on a non-GUI worker thread,
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// and writes the sidecar to disk. Used by the .rdbview export path.
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class SidecarBuilder : public QObject {
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Q_OBJECT
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public:
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explicit SidecarBuilder(QObject* parent = nullptr);
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// Convenience for the offline path: construct an internal streamer,
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// accumulate, finalize, and write to disk. anchor_path is normalised to
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// <stem>.ifcview by writeSidecar. Call from a non-GUI worker thread with
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// a Qt event dispatcher; build() spins a local QEventLoop until the
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// streamer's worker thread completes.
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bool build(const QString& ifc_path,
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const QString& anchor_path,
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int num_threads = 0);
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// Accumulator interface. Safe to call repeatedly from the same thread the
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// streamer signals are delivered to.
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void onMeshReady(const MeshChunk& chunk);
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void onInstanceReady(const InstanceChunk& chunk);
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// Finishes assembly using the georef + element batch the host collected
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// during streaming. Returns the assembled SidecarData by move; the
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// builder's internal state is left empty so the same instance can be
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// reused for another load.
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SidecarData finalize(const ModelGeoref& georef,
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const std::vector<ElementInfo>& elements);
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const QString& lastError() const { return last_error_; }
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private:
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SidecarData sidecar_data_;
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QString last_error_;
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};
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#endif // SIDECARBUILDER_H
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