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assimp

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This commit is contained in:
Ian Bassi
2026-08-23 22:11:48 +08:00
committed by SoftFever
parent ccd34ab03a
commit 72a68e9a0f
7 changed files with 427 additions and 2 deletions
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src/libslic3r/Model.cpp
+39
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@@ -2,6 +2,7 @@
#include "libslic3r.h"
#include "BuildVolume.hpp"
#include "TexturePainting.hpp"
#include "Format/AssimpImport.hpp"
#include "ClipperUtils.hpp"
#include "Exception.hpp"
#include "Model.hpp"
@@ -242,6 +243,27 @@ _finished:
// BBS: add part plate related logic
// BBS: backup & restore
// Loading model from a file, it may be a simple geometry file as STL or OBJ, however it may be a project file as well.
// Build a plain geometry ModelObject from a textured mesh. The texture itself is carried
// separately on Model::texture_mesh and consumed by the texture import dialog.
static void add_textured_mesh_to_model(Model& model, const TexturedMesh& tex_mesh, const std::string& input_file)
{
std::string object_name = boost::filesystem::path(input_file).filename().string();
indexed_triangle_set its;
its.vertices.resize(tex_mesh.vertices.size());
for (size_t i = 0; i < tex_mesh.vertices.size(); ++i)
its.vertices[i] = Vec3f(tex_mesh.vertices[i][0], tex_mesh.vertices[i][1], tex_mesh.vertices[i][2]);
its.indices.resize(tex_mesh.indices.size());
for (size_t i = 0; i < tex_mesh.indices.size(); ++i)
its.indices[i] = Vec3i32(tex_mesh.indices[i][0], tex_mesh.indices[i][1], tex_mesh.indices[i][2]);
its_merge_vertices(its);
its_remove_degenerate_faces(its);
its_compactify_vertices(its);
model.add_object(object_name.c_str(), input_file.c_str(), std::move(TriangleMesh(std::move(its))));
}
Model Model::read_from_file(const std::string& input_file,
DynamicPrintConfig* config,
ConfigSubstitutionContext* config_substitutions,
@@ -325,6 +347,23 @@ Model Model::read_from_file(const std::string&
}*/
}
}
else if (boost::algorithm::iends_with(input_file, ".glb") ||
boost::algorithm::iends_with(input_file, ".gltf") ||
boost::algorithm::iends_with(input_file, ".fbx")) {
// These formats always carry material/texture data, so they go through the textured
// import path: the geometry becomes a normal object and the texture is handed to the
// texture-to-color dialog via Model::texture_mesh.
auto tex_mesh = std::make_shared<TexturedMesh>();
result = load_assimp_textured_model(input_file, *tex_mesh, &message);
if (result) {
model.texture_mesh = tex_mesh;
add_textured_mesh_to_model(model, *tex_mesh, input_file);
} else if (!message.empty()) {
BOOST_LOG_TRIVIAL(error) << "Assimp: failed to load model: " << message
<< ", path=" << input_file;
message = _L("The file format is incompatible and cannot be parsed.");
}
}
else if (boost::algorithm::iends_with(input_file, ".svg"))
result = load_svg(input_file.c_str(), &model, message);
//BBS: remove the old .amf.xml files