Add texture displacement gizmo and UV editor

src/slic3r/GUI/Jobs/TextureDisplacementPreviewJob.cpp

@@ -0,0 +1,29 @@
+#include "TextureDisplacementPreviewJob.hpp"
+
+#include "slic3r/GUI/I18N.hpp"
+
+namespace Slic3r::GUI {
+
+TextureDisplacementPreviewJob::TextureDisplacementPreviewJob(TextureDisplacementPreviewInput &&input, uint64_t generation,
+                                                              std::function<void(indexed_triangle_set, uint64_t)> on_finished)
+    : m_input(std::move(input)), m_generation(generation), m_on_finished(std::move(on_finished))
+{
+}
+
+void TextureDisplacementPreviewJob::process(Ctl &ctl)
+{
+    ctl.update_status(0, _u8L("Computing texture displacement preview"));
+
+    // Only ever touches m_input (captured by value before this job was queued) and local state --
+    // never the live Model -- so this is safe to run concurrently with the UI thread.
+    m_result = build_texture_displacement(m_input.base_mesh, m_input.layers, m_input.facets_data);
+}
+
+void TextureDisplacementPreviewJob::finalize(bool canceled, std::exception_ptr &eptr)
+{
+    if (canceled || eptr || !m_on_finished)
+        return;
+    m_on_finished(std::move(m_result), m_generation);
+}
+
+} // namespace Slic3r::GUI