add capi

Oslandia · Oct 2, 2023 · 17f9566 · 17f9566
1 parent d401ba4
commit 17f9566
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diff --git a/src/capi/sfcgal_c.cpp b/src/capi/sfcgal_c.cpp
@@ -1170,6 +1170,26 @@ sfcgal_geometry_has_validity_flag(const sfcgal_geometry_t *geom) -> int
   return g1->hasValidityFlag() ? 1 : 0;
 }
 
+extern "C" auto
+sfcgal_geometry_extrude_straight_skeleton(const sfcgal_geometry_t *geom, double height)
+    -> sfcgal_geometry_t *
+{
+  const auto *g1 = reinterpret_cast<const SFCGAL::Geometry *>(geom);
+  std::unique_ptr<SFCGAL::PolyhedralSurface> polys;
+
+  try {
+    polys = SFCGAL::algorithm::extrudeStraightSkeleton(*g1, height);
+  } catch (std::exception &e) {
+    SFCGAL_WARNING("During straight_extrude_skeleton_distance(A):");
+    SFCGAL_WARNING("  with A: %s",
+                   ((const SFCGAL::Geometry *)(geom))->asText().c_str());
+    SFCGAL_ERROR("%s", e.what());
+    return nullptr;
+  }
+
+  return polys.release();
+}
+
 extern "C" auto
 sfcgal_geometry_straight_skeleton_distance_in_m(const sfcgal_geometry_t *geom)
     -> sfcgal_geometry_t *

diff --git a/src/capi/sfcgal_c.h b/src/capi/sfcgal_c.h
@@ -980,6 +980,17 @@ sfcgal_geometry_straight_skeleton(const sfcgal_geometry_t *geom);
 SFCGAL_API sfcgal_geometry_t *
 sfcgal_geometry_straight_skeleton_distance_in_m(const sfcgal_geometry_t *geom);
 
+/**
+ * Returns the extrude straight skeleton of the given Polygon
+ * @pre geom must be a Polygon
+ * @pre isValid(geom) == true
+ * @pre isValid(geom) == true
+ * @post isValid(return) == true
+ * @ingroup capi
+ */
+SFCGAL_API sfcgal_geometry_t *
+sfcgal_geometry_extrude_straight_skeleton(const sfcgal_geometry_t *geom, double height);
+
 /**
  * Returns the approximate medial axis for the given Polygon
  * Approximate medial axis is based on straight skeleton