createOperation(): fix geocent <--> nadgrids+geoidgrids case (fixes #1323)

1 files changed, 45 insertions, 0 deletions

diff --git a/test/unit/test_operation.cpp b/test/unit/test_operation.cpp
index e71ac716..615cbd67 100644
--- a/test/unit/test_operation.cpp
+++ b/test/unit/test_operation.cpp
@@ -6026,6 +6026,51 @@ TEST(operation, compoundCRS_with_boundProjCRS_and_boundVerticalCRS_to_geogCRS) {
 
 // ---------------------------------------------------------------------------
 
+TEST(operation, geocent_to_compoundCRS) {
+    auto objSrc = PROJStringParser().createFromPROJString(
+        "+proj=geocent +datum=WGS84 +units=m +type=crs");
+    auto src = nn_dynamic_pointer_cast<CRS>(objSrc);
+    ASSERT_TRUE(src != nullptr);
+    auto objDst = PROJStringParser().createFromPROJString(
+        "+proj=longlat +ellps=GRS67 +nadgrids=@foo.gsb +geoidgrids=@foo.gtx "
+        "+type=crs");
+    auto dst = nn_dynamic_pointer_cast<CRS>(objDst);
+    ASSERT_TRUE(dst != nullptr);
+    auto op = CoordinateOperationFactory::create()->createOperation(
+        NN_CHECK_ASSERT(src), NN_CHECK_ASSERT(dst));
+    ASSERT_TRUE(op != nullptr);
+    EXPECT_EQ(op->exportToPROJString(PROJStringFormatter::create().get()),
+              "+proj=pipeline +step +inv +proj=cart +ellps=WGS84 +step +inv "
+              "+proj=vgridshift +grids=@foo.gtx +multiplier=1 +step +inv "
+              "+proj=hgridshift +grids=@foo.gsb +step +proj=unitconvert "
+              "+xy_in=rad +xy_out=deg");
+}
+
+// ---------------------------------------------------------------------------
+
+TEST(operation, geocent_to_compoundCRS_context) {
+    auto authFactory =
+        AuthorityFactory::create(DatabaseContext::create(), "EPSG");
+    // WGS84 geocentric
+    auto src = authFactory->createCoordinateReferenceSystem("4978");
+    auto objDst = PROJStringParser().createFromPROJString(
+        "+proj=longlat +ellps=GRS67 +nadgrids=@foo.gsb +geoidgrids=@foo.gtx "
+        "+type=crs");
+    auto dst = nn_dynamic_pointer_cast<CRS>(objDst);
+    ASSERT_TRUE(dst != nullptr);
+    auto ctxt = CoordinateOperationContext::create(authFactory, nullptr, 0.0);
+    auto list = CoordinateOperationFactory::create()->createOperations(
+        src, NN_CHECK_ASSERT(dst), ctxt);
+    ASSERT_EQ(list.size(), 1U);
+    EXPECT_EQ(list[0]->exportToPROJString(PROJStringFormatter::create().get()),
+              "+proj=pipeline +step +inv +proj=cart +ellps=WGS84 +step +inv "
+              "+proj=vgridshift +grids=@foo.gtx +multiplier=1 +step +inv "
+              "+proj=hgridshift +grids=@foo.gsb +step +proj=unitconvert "
+              "+xy_in=rad +xy_out=deg");
+}
+
+// ---------------------------------------------------------------------------
+
 TEST(operation, compoundCRS_to_compoundCRS) {
     auto compound1 = CompoundCRS::create(
         PropertyMap(),