Aras Pranckevicius
91b5254598
The old Python OBJ importer had a (somewhat confusingly named) "Keep Vertex Order -> Poly Groups" option, that imported OBJ groups as "vertex groups" on the resulting mesh. All vertices of any face were assigned the vertex group, with a 1.0 weight. The new C++ importer did not have this option. It was trying to do something with vertex groups, but failing to actually achieve anything :) -- the vertex groups were created on the wrong object (later on overwritten by "nomain mesh to main mesh" operation); vertex weights were set to 1.0/vertex_count, and each vertex was only set to be in one group, even when it belongs to multiple faces from different groups. End result was that to the user, vertex groups were not visible/present at all (see T98874). This patch adds the import option (named "Vertex Groups"), which is off by default, and fixes the import code logic to actually do the right thing. Tested on file from T98874; vertex groups are imported just like with the Python importer. Reviewed By: Howard Trickey Differential Revision: https://developer.blender.org/D15200
94 lines
2.1 KiB
C++
94 lines
2.1 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup obj
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*/
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#pragma once
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#include "BKE_context.h"
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#include "BLI_path_util.h"
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#include "DEG_depsgraph.h"
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#include "IO_orientation.h"
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#include "IO_path_util_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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static const int TOTAL_AXES = 3;
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struct OBJExportParams {
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/** Full path to the destination .OBJ file. */
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char filepath[FILE_MAX];
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/** Pretend that destination file folder is this, if non-empty. Used only for tests. */
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char file_base_for_tests[FILE_MAX];
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/** Full path to current blender file (used for comments in output). */
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const char *blen_filepath;
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/** Whether multiple frames should be exported. */
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bool export_animation;
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/** The first frame to be exported. */
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int start_frame;
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/** The last frame to be exported. */
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int end_frame;
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/* Geometry Transform options. */
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eIOAxis forward_axis;
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eIOAxis up_axis;
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float scaling_factor;
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/* File Write Options. */
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bool export_selected_objects;
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bool apply_modifiers;
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eEvaluationMode export_eval_mode;
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bool export_uv;
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bool export_normals;
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bool export_colors;
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bool export_materials;
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bool export_triangulated_mesh;
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bool export_curves_as_nurbs;
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ePathReferenceMode path_mode;
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/* Grouping options. */
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bool export_object_groups;
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bool export_material_groups;
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bool export_vertex_groups;
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/**
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* Calculate smooth groups from sharp edges.
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*/
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bool export_smooth_groups;
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/**
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* Create bitflags instead of the default "0"/"1" group IDs.
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*/
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bool smooth_groups_bitflags;
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};
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struct OBJImportParams {
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/** Full path to the source OBJ file to import. */
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char filepath[FILE_MAX];
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/** Value 0 disables clamping. */
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float clamp_size;
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eIOAxis forward_axis;
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eIOAxis up_axis;
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bool import_vertex_groups;
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bool validate_meshes;
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};
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/**
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* Perform the full import process.
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* Import also changes the selection & the active object; callers
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* need to update the UI bits if needed.
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*/
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void OBJ_import(bContext *C, const struct OBJImportParams *import_params);
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/**
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* Perform the full export process.
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*/
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void OBJ_export(bContext *C, const struct OBJExportParams *export_params);
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#ifdef __cplusplus
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}
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#endif
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