Add new bake pipeline

src/libslic3r/TextureBake/TextureBakeIndex.cpp

@@ -0,0 +1,25 @@
+#include "TextureBakeIndex.hpp"
+
+#include <algorithm>
+
+namespace Slic3r {
+namespace TextureBake {
+
+WeldResult weld_vertices(const std::vector<Vec3f> &positions, double quant)
+{
+    WeldResult        out;
+    QuantizedPointMap map(quant, std::min<size_t>(positions.size(), size_t(1) << 22));
+    out.vertex_id.resize(positions.size());
+    int next_id = 0;
+    for (size_t i = 0; i < positions.size(); ++i) {
+        const int id = map.get_or_set(positions[i], next_id);
+        if (map.inserted())
+            ++next_id;
+        out.vertex_id[i] = id;
+    }
+    out.unique_count = next_id;
+    return out;
+}
+
+} // namespace TextureBake
+} // namespace Slic3r