无法在LWJGL JAVA中加载.OBJ文件

问题描述

我正在尝试加载在LWJGL网上找到的枪的3D模型。我一直在关注它的教程，但似乎无法使其正常工作。该模型可以加载，但顶点和纹理不正确。

代码加载了.obj文件，然后它将针对每个顶点，纹理和法线坐标遍历文件中的每一行数据。但是我在其余方面遇到了麻烦。

OBJLoader文件：

import RenderEngine.Loader;
import org.lwjgl.util.vector.Vector2f;
import org.lwjgl.util.vector.Vector3f;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class OBJLoader {

    private static List<Vector3f> vertexdata = new ArrayList<Vector3f>();
    private static List<Vector2f> texturedata = new ArrayList<Vector2f>();
    private static List<Integer> indexdata = new ArrayList<Integer>();
    private static List<Vector3f> realvertex = new ArrayList<Vector3f>();
    private static float[] vertexArray = null;
    private static float[] textureArray = null;
    private static int[] indexArray = null;
    private static float[] realvertexArray = null;

    public static RawModel loadOBJFile(String filename,Loader loader){
        FileReader fr = null;
        try {
            fr = new FileReader("res/Models/Gun/"+filename+".obj");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            System.err.println("Couldn't load "+filename+".obj");
        }

        BufferedReader reader = new BufferedReader(fr);

        try{
           String line;
           while(true){
               line = reader.readLine();
               if(line == null){
                   break;
               }
               String[] currentline = line.split(" ");
               if(line.startsWith("v ")){
                   Vector3f vertex = new Vector3f(Float.parseFloat(currentline[1]),Float.parseFloat(currentline[2]),Float.parseFloat(currentline[3]));
                   vertexdata.add(vertex);
               }else if(line.startsWith("vt ")){
                   Vector2f vertex = new Vector2f(Float.parseFloat(currentline[1]),Float.parseFloat(currentline[2]));
                   texturedata.add(vertex);
               } else if(line.startsWith("vn ")){
                   Vector3f vertex = new Vector3f(Float.parseFloat(currentline[1]),Float.parseFloat(currentline[3]));
                   realvertex.add(vertex);
               }else if(line.startsWith("f ")){
                    vertexArray = new float[vertexdata.size()*3];
                    textureArray = new float[texturedata.size()*2];
                    realvertexArray = new float[texturedata.size()*3];
                    break;
               }
           }

           while(line != null){
               try{
                   if(line.startsWith("f")){
                       String[] currentline = line.split(" ");
                       String[] rawdata1 = currentline[1].split("/");
                       String[] rawdata2 = currentline[2].split("/");
                       String[] rawdata3 = currentline[3].split("/");
                       processData(rawdata1);
                       processData(rawdata2);
                       processData(rawdata3);
                   }
               }catch(Exception e){ }
               line = reader.readLine();
           }
           reader.close();

        }catch(Exception e){
            System.err.println("Error while parsing OBJ data");
            e.printStackTrace();
        }

        vertexArray = new float[vertexdata.size()*3];
        indexArray = new int[indexdata.size()];

        int vertexPointer = 0;
        for(Vector3f pos: vertexdata){
            vertexArray[vertexPointer++] = pos.x;
            vertexArray[vertexPointer++] = pos.y;
            vertexArray[vertexPointer++] = pos.z;
        }
//        int texturepointer = 0;
//        for(Vector2f pos: texturedata){
//            textureArray[texturepointer++] = pos.x;
//            textureArray[texturepointer++] = pos.y;
//        }

        for(int i = 0;i < indexdata.size();i++){
            indexArray[i] = indexdata.get(i);
        }
        System.out.println("VERTEX: "+Arrays.toString(vertexArray));
        System.out.println("TEXTURE: "+Arrays.toString(textureArray));
        System.out.println("NORMAL: "+realvertex);
//        System.out.println("INDEX: "+Arrays.toString(indexArray));
        return loader.loadToVAO(vertexArray,textureArray,indexArray);
    }

    private static void processData(String[] vertexData){
        int currentVertexPointer = Integer.parseInt(vertexData[0]);
        indexdata.add(currentVertexPointer);

        Vector2f currentTexture = texturedata.get(Integer.parseInt(vertexData[1]) - 1);

        textureArray[currentVertexPointer*2] = currentTexture.x;
        textureArray[currentVertexPointer*2+1] = currentTexture.y;

        Vector3f currentNorm = realvertex.get(Integer.parseInt(vertexData[2]) - 1);

        realvertexArray[currentVertexPointer*3] = currentNorm.x;
        realvertexArray[currentVertexPointer*3+1] = currentNorm.y;
        realvertexArray[currentVertexPointer*3+2] = currentNorm.z;

    }
}

The result of the code is here

The tutorial i followed is here

**编辑：我已经设法修复了顶点，这只是我现在需要帮助的纹理坐标

解决方法

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