1 files changed, 223 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc
new file mode 100644
index 00000000000..0a7b5dd8463
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_curve_map.cc
@@ -0,0 +1,223 @@
+/*
+ * 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 "BLI_blenlib.h"
+#include "BLI_task.hh"
+
+#include "BKE_colortools.h"
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "node_geometry_util.hh"
+
+namespace blender::nodes::node_geo_legacy_attribute_curve_map_cc {
+
+static void node_declare(NodeDeclarationBuilder &b)
+{
+  b.add_input<decl::Geometry>(N_("Geometry"));
+  b.add_input<decl::String>(N_("Attribute"));
+  b.add_input<decl::String>(N_("Result"));
+  b.add_output<decl::Geometry>(N_("Geometry"));
+}
+
+static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
+{
+  uiItemR(layout, ptr, "data_type", 0, "", ICON_NONE);
+  bNode *node = (bNode *)ptr->data;
+  NodeAttributeCurveMap *data = (NodeAttributeCurveMap *)node->storage;
+  switch (data->data_type) {
+    case CD_PROP_FLOAT:
+      uiTemplateCurveMapping(layout, ptr, "curve_vec", 0, false, false, false, false);
+      break;
+    case CD_PROP_FLOAT3:
+      uiTemplateCurveMapping(layout, ptr, "curve_vec", 'v', false, false, false, false);
+      break;
+    case CD_PROP_COLOR:
+      uiTemplateCurveMapping(layout, ptr, "curve_rgb", 'c', false, false, false, false);
+      break;
+  }
+}
+
+static void node_free_storage(bNode *node)
+{
+  if (node->storage) {
+    NodeAttributeCurveMap *data = (NodeAttributeCurveMap *)node->storage;
+    BKE_curvemapping_free(data->curve_vec);
+    BKE_curvemapping_free(data->curve_rgb);
+    MEM_freeN(node->storage);
+  }
+}
+
+static void node_copy_storage(bNodeTree *UNUSED(dest_ntree),
+                              bNode *dest_node,
+                              const bNode *src_node)
+{
+  dest_node->storage = MEM_dupallocN(src_node->storage);
+  NodeAttributeCurveMap *src_data = (NodeAttributeCurveMap *)src_node->storage;
+  NodeAttributeCurveMap *dest_data = (NodeAttributeCurveMap *)dest_node->storage;
+  dest_data->curve_vec = BKE_curvemapping_copy(src_data->curve_vec);
+  dest_data->curve_rgb = BKE_curvemapping_copy(src_data->curve_rgb);
+}
+
+static void node_init(bNodeTree *UNUSED(ntree), bNode *node)
+{
+  NodeAttributeCurveMap *data = (NodeAttributeCurveMap *)MEM_callocN(sizeof(NodeAttributeCurveMap),
+                                                                     __func__);
+
+  data->data_type = CD_PROP_FLOAT;
+  data->curve_vec = BKE_curvemapping_add(4, -1.0f, -1.0f, 1.0f, 1.0f);
+  data->curve_vec->cur = 3;
+  data->curve_rgb = BKE_curvemapping_add(4, 0.0f, 0.0f, 1.0f, 1.0f);
+  node->storage = data;
+}
+
+static void node_update(bNodeTree *UNUSED(ntree), bNode *node)
+{
+  /* Set the active curve when data type is changed. */
+  NodeAttributeCurveMap *data = (NodeAttributeCurveMap *)node->storage;
+  if (data->data_type == CD_PROP_FLOAT) {
+    data->curve_vec->cur = 3;
+  }
+  else if (data->data_type == CD_PROP_FLOAT3) {
+    data->curve_vec->cur = 0;
+  }
+}
+
+static AttributeDomain get_result_domain(const GeometryComponent &component,
+                                         StringRef input_name,
+                                         StringRef result_name)
+{
+  /* Use the domain of the result attribute if it already exists. */
+  std::optional<AttributeMetaData> result_info = component.attribute_get_meta_data(result_name);
+  if (result_info) {
+    return result_info->domain;
+  }
+  /* Otherwise use the input attribute's domain if it exists. */
+  std::optional<AttributeMetaData> input_info = component.attribute_get_meta_data(input_name);
+  if (input_info) {
+    return input_info->domain;
+  }
+
+  return ATTR_DOMAIN_POINT;
+}
+
+static void execute_on_component(const GeoNodeExecParams &params, GeometryComponent &component)
+{
+  const bNode &bnode = params.node();
+  NodeAttributeCurveMap &node_storage = *(NodeAttributeCurveMap *)bnode.storage;
+  const std::string result_name = params.get_input<std::string>("Result");
+  const std::string input_name = params.get_input<std::string>("Attribute");
+
+  const CustomDataType result_type = (CustomDataType)node_storage.data_type;
+  const AttributeDomain result_domain = get_result_domain(component, input_name, result_name);
+
+  OutputAttribute attribute_result = component.attribute_try_get_for_output_only(
+      result_name, result_domain, result_type);
+  if (!attribute_result) {
+    return;
+  }
+
+  switch (result_type) {
+    case CD_PROP_FLOAT: {
+      const CurveMapping *cumap = (CurveMapping *)node_storage.curve_vec;
+      VArray<float> attribute_in = component.attribute_get_for_read<float>(
+          input_name, result_domain, float(0.0f));
+      MutableSpan<float> results = attribute_result.as_span<float>();
+      threading::parallel_for(attribute_in.index_range(), 512, [&](IndexRange range) {
+        for (const int i : range) {
+          results[i] = BKE_curvemapping_evaluateF(cumap, 3, attribute_in[i]);
+        }
+      });
+      break;
+    }
+    case CD_PROP_FLOAT3: {
+      const CurveMapping *cumap = (CurveMapping *)node_storage.curve_vec;
+      VArray<float3> attribute_in = component.attribute_get_for_read<float3>(
+          input_name, result_domain, float3(0.0f));
+      MutableSpan<float3> results = attribute_result.as_span<float3>();
+      threading::parallel_for(attribute_in.index_range(), 512, [&](IndexRange range) {
+        for (const int i : range) {
+          BKE_curvemapping_evaluate3F(cumap, results[i], attribute_in[i]);
+        }
+      });
+      break;
+    }
+    case CD_PROP_COLOR: {
+      const CurveMapping *cumap = (CurveMapping *)node_storage.curve_rgb;
+      VArray<ColorGeometry4f> attribute_in = component.attribute_get_for_read<ColorGeometry4f>(
+          input_name, result_domain, ColorGeometry4f(0.0f, 0.0f, 0.0f, 1.0f));
+      MutableSpan<ColorGeometry4f> results = attribute_result.as_span<ColorGeometry4f>();
+      threading::parallel_for(attribute_in.index_range(), 512, [&](IndexRange range) {
+        for (const int i : range) {
+          BKE_curvemapping_evaluateRGBF(cumap, results[i], attribute_in[i]);
+        }
+      });
+      break;
+    }
+    default: {
+      BLI_assert_unreachable();
+      break;
+    }
+  }
+
+  attribute_result.save();
+}
+
+static void node_geo_exec(GeoNodeExecParams params)
+{
+  const bNode &bnode = params.node();
+  NodeAttributeCurveMap *data = (NodeAttributeCurveMap *)bnode.storage;
+  BKE_curvemapping_init(data->curve_vec);
+  BKE_curvemapping_init(data->curve_rgb);
+
+  GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
+
+  geometry_set = geometry::realize_instances_legacy(geometry_set);
+
+  if (geometry_set.has<MeshComponent>()) {
+    execute_on_component(params, geometry_set.get_component_for_write<MeshComponent>());
+  }
+  if (geometry_set.has<PointCloudComponent>()) {
+    execute_on_component(params, geometry_set.get_component_for_write<PointCloudComponent>());
+  }
+  if (geometry_set.has<CurveComponent>()) {
+    execute_on_component(params, geometry_set.get_component_for_write<CurveComponent>());
+  }
+
+  params.set_output("Geometry", std::move(geometry_set));
+}
+
+}  // namespace blender::nodes::node_geo_legacy_attribute_curve_map_cc
+
+void register_node_type_geo_attribute_curve_map()
+{
+  namespace file_ns = blender::nodes::node_geo_legacy_attribute_curve_map_cc;
+
+  static bNodeType ntype;
+
+  geo_node_type_base(
+      &ntype, GEO_NODE_LEGACY_ATTRIBUTE_CURVE_MAP, "Attribute Curve Map", NODE_CLASS_ATTRIBUTE, 0);
+  node_type_update(&ntype, file_ns::node_update);
+  node_type_init(&ntype, file_ns::node_init);
+  node_type_size_preset(&ntype, NODE_SIZE_LARGE);
+  node_type_storage(
+      &ntype, "NodeAttributeCurveMap", file_ns::node_free_storage, file_ns::node_copy_storage);
+  ntype.declare = file_ns::node_declare;
+  ntype.geometry_node_execute = file_ns::node_geo_exec;
+  ntype.draw_buttons = file_ns::node_layout;
+  nodeRegisterType(&ntype);
+}