Functions: add generic functions that output constants

2020-07-07 19:34:35 +02:00
parent f4633cf46c
commit 22158162ef
4 changed files with 148 additions and 0 deletions
--- a/source/blender/functions/intern/multi_function_builder.cc
+++ b/source/blender/functions/intern/multi_function_builder.cc
@@ -0,0 +1,71 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "FN_multi_function_builder.hh"
+
+namespace blender::fn {
+
+CustomMF_GenericConstant::CustomMF_GenericConstant(const CPPType &type, const void *value)
+    : type_(type), value_(value)
+{
+  MFSignatureBuilder signature = this->get_builder("Constant " + type.name());
+  std::stringstream ss;
+  type.debug_print(value, ss);
+  signature.single_output(ss.str(), type);
+}
+
+void CustomMF_GenericConstant::call(IndexMask mask,
+                                    MFParams params,
+                                    MFContext UNUSED(context)) const
+{
+  GMutableSpan output = params.uninitialized_single_output(0);
+  type_.fill_uninitialized_indices(value_, output.buffer(), mask);
+}
+
+static std::string gspan_to_string(GSpan array)
+{
+  std::stringstream ss;
+  ss << "[";
+  uint max_amount = 5;
+  for (uint i : IndexRange(std::min(max_amount, array.size()))) {
+    array.type().debug_print(array[i], ss);
+    ss << ", ";
+  }
+  if (max_amount < array.size()) {
+    ss << "...";
+  }
+  ss << "]";
+  return ss.str();
+}
+
+CustomMF_GenericConstantArray::CustomMF_GenericConstantArray(GSpan array) : array_(array)
+{
+  const CPPType &type = array.type();
+  MFSignatureBuilder signature = this->get_builder("Constant " + type.name() + " Vector");
+  signature.vector_output(gspan_to_string(array), type);
+}
+
+void CustomMF_GenericConstantArray::call(IndexMask mask,
+                                         MFParams params,
+                                         MFContext UNUSED(context)) const
+{
+  GVectorArray &vectors = params.vector_output(0);
+  for (uint i : mask) {
+    vectors.extend(i, array_);
+  }
+}
+
+}  // namespace blender::fn