Merge branch 'tm_openvdb_integration' into lm_tm_hollowing

* Refactor file names in SLA dir

src/libslic3r/SLA/SupportPoint.hpp

@@ -0,0 +1,69 @@
+#ifndef SLA_SUPPORTPOINT_HPP
+#define SLA_SUPPORTPOINT_HPP
+
+#include <vector>
+#include <libslic3r/SLA/Common.hpp>
+#include <libslic3r/ExPolygon.hpp>
+
+namespace Slic3r { namespace sla {
+
+// An enum to keep track of where the current points on the ModelObject came from.
+enum class PointsStatus {
+    NoPoints,           // No points were generated so far.
+    Generating,     // The autogeneration algorithm triggered, but not yet finished.
+    AutoGenerated,  // Points were autogenerated (i.e. copied from the backend).
+    UserModified    // User has done some edits.
+};
+
+struct SupportPoint
+{
+    Vec3f pos;
+    float head_front_radius;
+    bool  is_new_island;
+    
+    SupportPoint()
+        : pos(Vec3f::Zero()), head_front_radius(0.f), is_new_island(false)
+    {}
+    
+    SupportPoint(float pos_x,
+                 float pos_y,
+                 float pos_z,
+                 float head_radius,
+                 bool  new_island)
+        : pos(pos_x, pos_y, pos_z)
+        , head_front_radius(head_radius)
+        , is_new_island(new_island)
+    {}
+    
+    SupportPoint(Vec3f position, float head_radius, bool new_island)
+        : pos(position)
+        , head_front_radius(head_radius)
+        , is_new_island(new_island)
+    {}
+    
+    SupportPoint(Eigen::Matrix<float, 5, 1, Eigen::DontAlign> data)
+        : pos(data(0), data(1), data(2))
+        , head_front_radius(data(3))
+        , is_new_island(data(4) != 0.f)
+    {}
+    
+    bool operator==(const SupportPoint &sp) const
+    {
+        float rdiff = std::abs(head_front_radius - sp.head_front_radius);
+        return (pos == sp.pos) && rdiff < float(EPSILON) &&
+               is_new_island == sp.is_new_island;
+    }
+    
+    bool operator!=(const SupportPoint &sp) const { return !(sp == (*this)); }
+    
+    template<class Archive> void serialize(Archive &ar)
+    {
+        ar(pos, head_front_radius, is_new_island);
+    }
+};
+
+using SupportPoints = std::vector<SupportPoint>;
+
+}} // namespace Slic3r::sla
+
+#endif // SUPPORTPOINT_HPP