use i,j,k for optional struct ele origin, instead of i0,j0,k0

CHANGELOG.md

@@ -74,6 +74,7 @@ and this project aspires to adhere to [Semantic Versioning](https://semver.org/s
 #### Blueprint
 - Refactored the Polygonal and Polyhedral mesh blueprint specification to leverage one-to-many concepts and to allow more zero-copy use cases.
 - The `conduit_blueprint_mpi` library now depends on `conduit_relay_mpi`.
+- Optional Mesh Blueprint structured topology logical element offsets are now `{i,j,k}` instead of `{i0,j0,k0}`.
 
 
 ## [0.5.1] - Released 2020-01-18

src/docs/sphinx/blueprint_mesh.rst

@@ -196,20 +196,20 @@ The mesh blueprint protocol accepts four implicit ways to define a topology on a
 
    * topologies/topo/coordset: "coords"
    * topologies/topo/type: “uniform”
-   * topologies/topo/elements/origin/{i0,j0,k0} (optional, default = {0,0,0})
+   * topologies/topo/elements/origin/{i,j,k} (optional, default = {0,0,0})
 
 * **rectilinear**: An implicit topology that defines a grid of elements on top of a *rectilinear* coordinate set. 
 
    * topologies/topo/coordset: "coords"
    * topologies/topo/type: “rectilinear”
-   * topologies/topo/elements/origin/{i0,j0,k0} (optional, default = {0,0,0})
+   * topologies/topo/elements/origin/{i,j,k} (optional, default = {0,0,0})
 
 
 .. .. attention::
 ..    (can we collapse uniform + rectilinear?)
 .. * topologies/topo/type: “structured”
 .. * topologies/topo/elements/dims: "implicit"
-.. * topologies/topo/elements/origin/{i0,j0,k0} (optional, default = {0,0,0})
+.. * topologies/topo/elements/origin/{i,j,k} (optional, default = {0,0,0})
 .. * topologies/coordset: "coords"
 
 

src/libs/blueprint/conduit_blueprint_mesh_examples.cpp

@@ -2860,8 +2860,8 @@ adjset_uniform(Node &res)
         domain_coords["origin/y"].set_float64(0.5*(i%2));
 
         Node &domain_topo = domain_node["topologies/topo"];
-        domain_topo["elements/origin/i0"].set_int32(20*(i/2));
-        domain_topo["elements/origin/j0"].set_int32(20*(i%2));
+        domain_topo["elements/origin/i"].set_int32(20*(i/2));
+        domain_topo["elements/origin/j"].set_int32(20*(i%2));
         domain_topo["type"].set_string("uniform");
         domain_topo["coordset"].set_string("coords");
 

src/tests/relay/adios_test_utils.hpp

@@ -218,9 +218,9 @@ void add_rectilinear_mesh(Node &n, conduit::float64 origin[3], conduit::float64
     n["coordsets/coords/values/z"] = coords[2];
     n["topologies/mesh/coordset"] = "coords";
     n["topologies/mesh/type"] = "rectilinear";
-    n["topologies/mesh/elements/origin/i0"] = origin[0];
-    n["topologies/mesh/elements/origin/j0"] = origin[1];
-    n["topologies/mesh/elements/origin/k0"] = origin[2];
+    n["topologies/mesh/elements/origin/i"] = origin[0];
+    n["topologies/mesh/elements/origin/j"] = origin[1];
+    n["topologies/mesh/elements/origin/k"] = origin[2];
 
     n["fields/radius/association"] = "vertex";
     n["fields/radius/type"] = "scalar";