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我是新來的android和opengl es.Here我試圖使用Eclipse的.rij文件加載器爲andriod.Here是我的代碼爲mesh文件。我已經保存在assest文件夾中的對象文件。這裏是代碼：Android .obj文件在Eclipse中的加載器
public class Mesh {
List<String> LINes;
float[] vertices;
float[] normals ;
float[] uv ;
// List<String> lines;
int numVertices = 0;
int numNormals = 0;
int numUV = 0;
int numFaces = 0;
short[] facesVerts;
short[] facesNormals;
short[] facesUV ;
int vertexIndex = 0;
int normalIndex = 0;
int uvIndex = 0;
int faceIndex = 0;
ShortBuffer index;
ShortBuffer mnormal;
ShortBuffer text;
FloatBuffer vertex;
FloatBuffer normal;
FloatBuffer texcoords;
int textureId=-1;
int ilength;
public Model(GL10 gl, Context parent) {
//Meshes = new Vector<Mesh>();
openObjFile("tetrahedron.obj", parent, gl);
}
public void draw(GL10 gl) {
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
// Counter-clockwise winding.
gl.glFrontFace(GL10.GL_CCW);
gl.glEnable(GL10.GL_CULL_FACE);
gl.glCullFace(GL10.GL_BACK);
// Pass the vertex buffer in
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);
if(textureId>=0){
// Get specific texture.
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);
gl.glActiveTexture(GL10.GL_TEXTURE0);
gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT);
gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT);
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// Pass in texture normals
gl.glNormalPointer(GL10.GL_FLOAT, 0,mnormal);
// Pass in texture coordinates
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, text);
}
//gl.glColor4f (1.0f, 1.0f, 1.0f, 1.0f);
// Draw the triangles
gl.glDrawElements(GL10.GL_TRIANGLES, ilength, GL10.GL_UNSIGNED_SHORT, index);
if(textureId>=0){
gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// Disable the use of textures.
gl.glDisable(GL10.GL_TEXTURE_2D);
}
// Disable the buffers
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
}
// reads the model file in
private List<String> openFile(String filename, Context context) {
InputStream instream = null;
List<String> LINes = new ArrayList<String>();
try {
instream = context.getAssets().open(filename);
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(instream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLINE;
// Read File LINE By LINE
while ((strLINE = br.readLine()) != null) {
LINes.add(strLINE);
}
// Close the Input stream
instream.close();
} catch (Exception e) {// Catch exception if any
e.toString();
}
return LINes;
}
// high level model file parser
private void openObjFile(String filename, Context context, GL10 gl) {
List<String> LINes = openFile(filename, context); // opens the file
vertices = new float[LINes.size() * 3];
normals = new float[LINes.size() * 3];
uv = new float[LINes.size() * 2];
facesVerts = new short[LINes.size() * 3];
facesNormals = new short[LINes.size() * 3];
facesUV = new short[LINes.size() * 3];
for (int i = 0; i < LINes.size(); i++) {
String line = LINes.get(i);
if (line.startsWith("v ")) {
String[] tokens = line.split("[ ]+");
vertices[vertexIndex] = Float.parseFloat(tokens[1]);
vertices[vertexIndex + 1] = Float.parseFloat(tokens[2]);
vertices[vertexIndex + 2] = Float.parseFloat(tokens[3]);
vertexIndex += 3;
numVertices++;
continue;
}
if (line.startsWith("vn ")) {
String[] tokens = line.split("[ ]+");
normals[normalIndex] = Float.parseFloat(tokens[1]);
normals[normalIndex + 1] = Float.parseFloat(tokens[2]);
normals[normalIndex + 2] = Float.parseFloat(tokens[3]);
normalIndex += 3;
numNormals++;
continue;
}
if (line.startsWith("vt")) {
String[] tokens = line.split("[ ]+");
uv[uvIndex] = Float.parseFloat(tokens[1]);
uv[uvIndex + 1] = Float.parseFloat(tokens[2]);
uvIndex += 2;
numUV++;
continue;
}
if (line.startsWith("f ")) {
String[] tokens = line.split("[ ]+");
String[] parts = tokens[1].split("/");
facesVerts[faceIndex] = getIndexs(parts[0], numVertices);
if (parts.length > 2)
facesNormals[faceIndex] = getIndexs(parts[2], numNormals);
if (parts.length > 1)
facesUV[faceIndex] = getIndexs(parts[1], numUV);
faceIndex++;
parts = tokens[2].split("/");
facesVerts[faceIndex] = getIndexs(parts[0], numVertices);
if (parts.length > 2)
facesNormals[faceIndex] = getIndexs(parts[2], numNormals);
if (parts.length > 1)
facesUV[faceIndex] = getIndexs(parts[1], numUV);
faceIndex++;
parts = tokens[3].split("/");
facesVerts[faceIndex] = getIndexs(parts[0], numVertices);
if (parts.length > 2)
facesNormals[faceIndex] = getIndexs(parts[2], numNormals);
if (parts.length > 1)
facesUV[faceIndex] = getIndexs(parts[1], numUV);
faceIndex++;
numFaces++;
continue;
}
}
index=createsBuffer(facesVerts);
ilength=facesVerts.length;
mnormal=createsBuffer(facesNormals);
text=createsBuffer(facesUV);
vertex=createfBuffer(vertices);
normal=createfBuffer(normals);
texcoords=createfBuffer(uv);
// Meshes.add(new Mesh(text,mnormal, index, textureId, facesVerts.length));
}
ShortBuffer createsBuffer(short[] indices) {
ShortBuffer sbuffer;
ByteBuffer ibb = ByteBuffer.allocateDirect(indices.length * 2);
ibb.order(ByteOrder.nativeOrder());
sbuffer = ibb.asShortBuffer();
sbuffer.put(indices);
sbuffer.position(0);
return sbuffer;
}
FloatBuffer createfBuffer(float[] indices) {
FloatBuffer fbuffer;
ByteBuffer ibb = ByteBuffer.allocateDirect(indices.length * 4);
ibb.order(ByteOrder.nativeOrder());
fbuffer = ibb.asFloatBuffer();
fbuffer.put(indices);
fbuffer.position(0);
return fbuffer;
}
short getIndexs(String index,int size){
short idx = Short.parseShort(index);
if (idx < 0)
return (short) (size + idx);
else
return (short) (idx-1);
}
int getIndex(String index, int size) {
int idx = Integer.parseInt(index);
if (idx < 0)
return size + idx;
else
return idx - 1;
}
}
但代碼不工作，我只是得到黑屏作爲輸出。 我真的很感謝任何幫助。我沒有得到我在做什麼錯或在這裏失蹤。 在此先感謝。