blender-archive/source/blender/nodes/geometry/node_geometry_util.hh

/*
 * 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.
 */

#pragma once

#include <string.h>

#include "BLI_float3.hh"
#include "BLI_utildefines.h"

#include "MEM_guardedalloc.h"

#include "DNA_node_types.h"

#include "BKE_node.h"

#include "BLT_translation.h"

#include "NOD_geometry.h"
#include "NOD_geometry_exec.hh"
#include "NOD_socket_declarations.hh"
#include "NOD_socket_declarations_geometry.hh"

#include "node_util.h"

void geo_node_type_base(struct bNodeType *ntype, int type, const char *name, short nclass);
bool geo_node_poll_default(struct bNodeType *ntype,
                           struct bNodeTree *ntree,
                           const char **r_disabled_hint);

namespace blender::nodes {
/**
 * Update the availability of a group of input sockets with the same name,
 * used for switching between attribute inputs or single values.
 *
 * \param mode: Controls which socket of the group to make available.
 * \param name_is_available: If false, make all sockets with this name unavailable.
 */
void update_attribute_input_socket_availabilities(bNodeTree &ntree,
                                                  bNode &node,
                                                  const StringRef name,
                                                  const GeometryNodeAttributeInputMode mode,
                                                  const bool name_is_available = true);

Array<uint32_t> get_geometry_element_ids_as_uints(const GeometryComponent &component,
                                                  const AttributeDomain domain);

void transform_mesh(Mesh &mesh,
                    const float3 translation,
                    const float3 rotation,
                    const float3 scale);

void transform_geometry_set(GeometrySet &geometry,
                            const float4x4 &transform,
                            const Depsgraph &depsgraph);

Mesh *create_line_mesh(const float3 start, const float3 delta, const int count);

Mesh *create_grid_mesh(const int verts_x,
                       const int verts_y,
                       const float size_x,
                       const float size_y);

struct ConeAttributeOutputs {
  StrongAnonymousAttributeID top_id;
  StrongAnonymousAttributeID bottom_id;
  StrongAnonymousAttributeID side_id;
};

Mesh *create_cylinder_or_cone_mesh(const float radius_top,
                                   const float radius_bottom,
                                   const float depth,
                                   const int circle_segments,
                                   const int side_segments,
                                   const int fill_segments,
                                   const GeometryNodeMeshCircleFillType fill_type,
                                   ConeAttributeOutputs &attribute_outputs);

Mesh *create_cuboid_mesh(float3 size, int verts_x, int verts_y, int verts_z);

/**
 * Copies the point domain attributes from `in_component` that are in the mask to `out_component`.
 */
void copy_point_attributes_based_on_mask(const GeometryComponent &in_component,
                                         GeometryComponent &result_component,
                                         Span<bool> masks,
                                         const bool invert);
/**
 * Returns the parts of the geometry that are on the selection for the given domain. If the domain
 * is not applicable for the component, e.g. face domain for point cloud, nothing happens to that
 * component. If no component can work with the domain, then `error_message` is set to true.
 */
void separate_geometry(GeometrySet &geometry_set,
                       const AttributeDomain domain,
                       const GeometryNodeDeleteGeometryMode mode,
                       const Field<bool> &selection_field,
                       const bool invert,
                       bool &r_is_error);

struct CurveToPointsResults {
  int result_size;
  MutableSpan<float3> positions;
  MutableSpan<float> radii;
  MutableSpan<float> tilts;

  Map<AttributeIDRef, GMutableSpan> point_attributes;

  MutableSpan<float3> tangents;
  MutableSpan<float3> normals;
  MutableSpan<float3> rotations;
};
/**
 * Create references for all result point cloud attributes to simplify accessing them later on.
 */
CurveToPointsResults curve_to_points_create_result_attributes(PointCloudComponent &points,
                                                              const CurveEval &curve);

void curve_create_default_rotation_attribute(Span<float3> tangents,
                                             Span<float3> normals,
                                             MutableSpan<float3> rotations);

std::optional<CustomDataType> node_data_type_to_custom_data_type(eNodeSocketDatatype type);
std::optional<CustomDataType> node_socket_to_custom_data_type(const bNodeSocket &socket);

}  // namespace blender::nodes