69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
#include "WorldObject.hpp"
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inline WorldObject::~WorldObject() {}
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template<class D>
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inline WorldObjectAbstract<D>::~WorldObjectAbstract() {}
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template<class D>
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void WorldObjectAbstract<D>::LoadMeshFromObjFile(std::string file) {
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tinyobj::ObjReader reader;
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tinyobj::ObjReaderConfig reader_config;
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reader_config.mtl_search_path = "./";
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reader_config.triangulate = false;
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reader_config.vertex_color = false;
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if (!reader.ParseFromFile(file, reader_config))
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throw new std::runtime_error("Obj loader failure");
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const tinyobj::attrib_t& attrib = reader.GetAttrib();
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const std::vector<tinyobj::shape_t>& shapes = reader.GetShapes();
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try {
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mMesh.vertices.reserve(attrib.vertices.size());
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} catch (const std::length_error& ex) {
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throw ex;
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}
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// Reinterprete vertices to our format
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for (size_t i = 0; i < attrib.vertices.size(); i += 3)
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mMesh.vertices.push_back(Vertex(attrib.vertices[i], attrib.vertices[i+1], attrib.vertices[i+2]));
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// Loop over shapes/subparts
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for (size_t s = 0; s < shapes.size(); s++) {
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MeshPart subpart;
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// Loop over faces(polygon)
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size_t index_offset = 0;
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for (size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
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size_t fv = size_t(shapes[s].mesh.num_face_vertices[f]);
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try {
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subpart.indices.reserve(shapes[s].mesh.indices.size());
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} catch (const std::length_error& ex) {
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throw ex;
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}
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// Loop over indices in the face.
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for (size_t v = 0; v < fv; v++) {
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subpart.indices.push_back(shapes[s].mesh.indices[index_offset + v].vertex_index);
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// Check if `normal_index` is zero or positive. negative = no normal data
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//if (idx.normal_index >= 0) {}
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// Check if `texcoord_index` is zero or positive. negative = no texcoord data
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//if (idx.texcoord_index >= 0) {}
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}
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index_offset += fv;
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// per-face material
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//shapes[s].mesh.material_ids[f];
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}
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mMesh.parts.push_back(subpart);
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}
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// Refresh AABB bounds
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UpdateAABBFromMesh();
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} |