Jacques Lucke
bf47fb40fd
This implements the initial core framework for fields and anonymous attributes (also see T91274). The new functionality is hidden behind the "Geometry Nodes Fields" feature flag. When enabled in the user preferences, the following new nodes become available: `Position`, `Index`, `Normal`, `Set Position` and `Attribute Capture`. Socket inspection has not been updated to work with fields yet. Besides these changes at the user level, this patch contains the ground work for: * building and evaluating fields at run-time (`FN_fields.hh`) and * creating and accessing anonymous attributes on geometry (`BKE_anonymous_attribute.h`). For evaluating fields we use a new so called multi-function procedure (`FN_multi_function_procedure.hh`). It allows composing multi-functions in arbitrary ways and supports efficient evaluation as is required by fields. See `FN_multi_function_procedure.hh` for more details on how this evaluation mechanism can be used. A new `AttributeIDRef` has been added which allows handling named and anonymous attributes in the same way in many places. Hans and I worked on this patch together. Differential Revision: https://developer.blender.org/D12414
104 lines
3.8 KiB
C++
104 lines
3.8 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include <string.h>
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#include "BLI_float3.hh"
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#include "BLI_utildefines.h"
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#include "MEM_guardedalloc.h"
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#include "DNA_node_types.h"
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#include "BKE_node.h"
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#include "BLT_translation.h"
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#include "NOD_geometry.h"
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#include "NOD_geometry_exec.hh"
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#include "NOD_socket_declarations.hh"
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#include "node_util.h"
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void geo_node_type_base(
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struct bNodeType *ntype, int type, const char *name, short nclass, short flag);
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bool geo_node_poll_default(struct bNodeType *ntype,
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struct bNodeTree *ntree,
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const char **r_disabled_hint);
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namespace blender::nodes {
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void update_attribute_input_socket_availabilities(bNode &node,
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const StringRef name,
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const GeometryNodeAttributeInputMode mode,
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const bool name_is_available = true);
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Array<uint32_t> get_geometry_element_ids_as_uints(const GeometryComponent &component,
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const AttributeDomain domain);
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void transform_mesh(Mesh *mesh,
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const float3 translation,
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const float3 rotation,
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const float3 scale);
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Mesh *create_line_mesh(const float3 start, const float3 delta, const int count);
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Mesh *create_grid_mesh(const int verts_x,
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const int verts_y,
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const float size_x,
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const float size_y);
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Mesh *create_cylinder_or_cone_mesh(const float radius_top,
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const float radius_bottom,
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const float depth,
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const int verts_num,
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const GeometryNodeMeshCircleFillType fill_type);
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Mesh *create_cuboid_mesh(float3 size, int verts_x, int verts_y, int verts_z);
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/**
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* Copies the point domain attributes from `in_component` that are in the mask to `out_component`.
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*/
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void copy_point_attributes_based_on_mask(const GeometryComponent &in_component,
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GeometryComponent &result_component,
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Span<bool> masks,
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const bool invert);
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struct CurveToPointsResults {
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int result_size;
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MutableSpan<float3> positions;
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MutableSpan<float> radii;
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MutableSpan<float> tilts;
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Map<AttributeIDRef, GMutableSpan> point_attributes;
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MutableSpan<float3> tangents;
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MutableSpan<float3> normals;
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MutableSpan<float3> rotations;
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};
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/**
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* Create references for all result point cloud attributes to simplify accessing them later on.
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*/
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CurveToPointsResults curve_to_points_create_result_attributes(PointCloudComponent &points,
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const CurveEval &curve);
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void curve_create_default_rotation_attribute(Span<float3> tangents,
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Span<float3> normals,
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MutableSpan<float3> rotations);
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} // namespace blender::nodes
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