mirror of
https://github.com/RGBCube/serenity
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2a16c8bdb8
This unifies how 3DFileViewer handles the initial file when starting the application and when opening files later on via the menu. Errors are shown both for the initial load as well as when loading files later on. An error during file load no longer clears the existing model. It also adds support for specifying the filename as a command-line argument. The opened file's name is shown in the titlebar.
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
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* Copyright (c) 2021, Mathieu Gaillard <gaillard.mathieu.39@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "WavefrontOBJLoader.h"
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#include <LibCore/File.h>
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#include <stdlib.h>
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RefPtr<Mesh> WavefrontOBJLoader::load(Core::File& file)
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{
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Vector<Vertex> vertices;
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Vector<Triangle> triangles;
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dbgln("Wavefront: Loading {}...", file.name());
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// Start reading file line by line
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for (auto line = file.line_begin(); !line.at_end(); ++line) {
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auto object_line = *line;
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// FIXME: Parse texture coordinates and vertex normals
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if (object_line.starts_with("vt") || object_line.starts_with("vn")) {
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continue;
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}
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// This line describes a vertex (a position in 3D space)
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if (object_line.starts_with("v")) {
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auto vertex_line = object_line.split_view(' ');
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if (vertex_line.size() != 4) {
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dbgln("Wavefront: Malformed vertex line. Aborting.");
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return nullptr;
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}
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vertices.append(
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{ static_cast<GLfloat>(atof(String(vertex_line.at(1)).characters())),
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static_cast<GLfloat>(atof(String(vertex_line.at(2)).characters())),
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static_cast<GLfloat>(atof(String(vertex_line.at(3)).characters())) });
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}
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// This line describes a face (a collection of 3 vertices, aka a triangle)
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else if (object_line.starts_with("f")) {
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auto face_line = object_line.split_view(' ');
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if (face_line.size() != 4) {
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dbgln("Wavefront: Malformed face line. Aborting.");
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return nullptr;
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}
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if (object_line.contains("/")) {
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for (int i = 1; i <= 3; ++i) {
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face_line.at(i) = face_line.at(i).split_view("/").at(0);
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}
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}
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// Create a new triangle
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triangles.append(
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{
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face_line.at(1).to_uint().value() - 1,
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face_line.at(2).to_uint().value() - 1,
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face_line.at(3).to_uint().value() - 1,
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});
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}
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}
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if (vertices.is_empty()) {
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dbgln("Wavefront: Failed to read any data from 3D file: {}", file.name());
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return nullptr;
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}
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dbgln("Wavefront: Done.");
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return adopt_ref(*new Mesh(vertices, triangles));
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}
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