Add function to retrieve layout from PDALPointView.

Author: jimmysoda

source/pdal/capi/Forward.h

@@ -36,9 +36,13 @@ namespace pdal
 
 #endif /* __cplusplus */
 
+
 /// A pointer to a C++ pdal::capi::Pipeline object
 typedef void* PDALPipelinePtr;
 
+/// A pointer to a C++ pdal::PointLayout
+typedef void* PDALPointLayoutPtr;
+
 /// A pointer to a C++ pdal::capi::PointView object
 typedef void* PDALPointViewPtr;
 

source/pdal/capi/PointView.cpp

@@ -102,6 +102,20 @@ namespace pdal
 
 				return result;
 			}
+
+			PDALPointLayoutPtr PDALGetPointViewLayout(PDALPointViewPtr view)
+			{
+				pdal::capi::PointView *wrapper = reinterpret_cast<pdal::capi::PointView *>(view);
+
+				PDALPointLayoutPtr layout = nullptr;
+
+				if (wrapper && *wrapper)
+				{
+					layout = (*wrapper)->layout();
+				}
+
+				return layout;
+			}
 		}
 	}
 }

source/pdal/capi/PointView.h

@@ -89,7 +89,13 @@ namespace pdal
 			 */
 			PDAL_C_API size_t PDALGetPointViewWkt(PDALPointViewPtr view, char *wkt, size_t size, bool pretty);
 
-			//! PDAL_C_API PDALPointLayoutPtr PDALGetPointViewLayout(PDALPointViewPtr view);
+			/**
+			 * Returns the point layout for the provided point `view`.
+			 * 
+			 * @param view The point view
+			 * @return The point layout
+			 */
+			PDAL_C_API PDALPointLayoutPtr PDALGetPointViewLayout(PDALPointViewPtr view);
 
 			/**
 			 * Fill a buffer with point data specified by the dimension list.

tests/pdal/capi/PointViewTest.c.in

@@ -216,6 +216,25 @@ TEST testPDALGetPointViewWkt(void)
 	PASS();
 }
 
+
+TEST testPDALGetPointViewLayout(void)
+{
+	PDALPointLayoutPtr layout = PDALGetPointViewLayout(NULL);
+	ASSERT_FALSE(layout != NULL);
+
+	PDALResetPointViewCollection(gPointViewCollection);
+	bool hasNext = PDALHasNextPointView(gPointViewCollection);
+	ASSERT_FALSE(!hasNext);
+
+	PDALPointViewPtr view = PDALGetNextPointView(gPointViewCollection);
+	ASSERT_FALSE(view == NULL);
+
+	layout = PDALGetPointViewLayout(view);
+	ASSERT_FALSE(layout == NULL);
+
+	PASS();
+}
+
 GREATEST_SUITE(PointViewTest)
 {
 	SET_SETUP(setupPointViewTest, NULL);
@@ -227,6 +246,7 @@ GREATEST_SUITE(PointViewTest)
 	RUN_TEST(testPDALClonePointView);
 	RUN_TEST(testPDALGetPointViewProj4);
 	RUN_TEST(testPDALGetPointViewWkt);
+	RUN_TEST(testPDALGetPointViewLayout);
 
 	SET_SETUP(NULL, NULL);
 	SET_TEARDOWN(NULL, NULL);