node_geo_mouse_position.cc

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/* SPDX-FileCopyrightText: 2024 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "node_geometry_util.hh"
 
namespace blender::nodes::node_geo_mouse_position_cc {
 
static void node_declare(NodeDeclarationBuilder &b)
{
  b.add_output<decl::Int>("Mouse X").description(
      "The region-space mouse X location, in pixels, increasing from 0 at the left");
  b.add_output<decl::Int>("Mouse Y").description(
      "The region-space mouse Y location, in pixels, increasing from 0 at the bottom");
  b.add_output<decl::Int>("Region Width").description("The total X size of the region in pixels");
  b.add_output<decl::Int>("Region Height").description("The total Y size of the region in pixels");
}
 
static void node_geo_exec(GeoNodeExecParams params)
{
  if (!check_tool_context_and_error(params)) {
    return;
  }
  const int2 mouse = params.user_data()->call_data->operator_data->mouse_position;
  const int2 size = params.user_data()->call_data->operator_data->region_size;
  params.set_output("Mouse X", mouse.x);
  params.set_output("Mouse Y", mouse.y);
  params.set_output("Region Width", size.x);
  params.set_output("Region Height", size.y);
}
 
static void node_register()
{
  static blender::bke::bNodeType ntype;
  geo_node_type_base(&ntype, "GeometryNodeToolMousePosition", GEO_NODE_TOOL_MOUSE_POSITION);
  ntype.ui_name = "Mouse Position";
  ntype.ui_description = "Retrieve the position of the mouse cursor";
  ntype.enum_name_legacy = "TOOL_MOUSE_POSITION";
  ntype.nclass = NODE_CLASS_INPUT;
  ntype.declare = node_declare;
  ntype.geometry_node_execute = node_geo_exec;
  ntype.gather_link_search_ops = search_link_ops_for_tool_node;
  blender::bke::node_register_type(ntype);
}
NOD_REGISTER_NODE(node_register)
 
}  // namespace blender::nodes::node_geo_mouse_position_cc