1 files changed, 41 insertions, 0 deletions
diff --git a/tools/chilbert_obj.cpp b/tools/chilbert_obj.cpp
new file mode 100644
index 0000000..b80fa91
--- /dev/null
+++ b/tools/chilbert_obj.cpp
@@ -0,0 +1,41 @@
+// Copyright 2018-2022 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "chilbert/chilbert.hpp"
+
+#include <array>
+#include <climits>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+int
+main(int argc, char** argv)
+{
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]);
+    return 1;
+  }
+
+  const unsigned long num_points = std::strtoul(argv[1], nullptr, 10);
+  if (num_points == 0 || num_points == ULONG_MAX) {
+    fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]);
+    return 1;
+  }
+
+  // Vertices
+  for (uint64_t i = 0; i < num_points; ++i) {
+    std::array<uint32_t, 3> point{};
+    chilbert::index_to_coords(point, 16, 3, i);
+    printf("v %u %u %u\n", point[0], point[1], point[2]);
+  }
+
+  // One polyline through all vertices
+  printf("\nl");
+  for (unsigned i = 0; i < num_points - 1; ++i) {
+    printf(" %u", i + 1);
+  }
+  printf("\n");
+
+  return 0;
+}