| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.opengl; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.ShortBuffer; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Iterator; |
| import javax.microedition.khronos.opengles.*; |
| |
| class MaterialIndices { |
| |
| private Material material = null; |
| private ShortBuffer indexBuffer = null; |
| |
| public MaterialIndices(Material material, ShortBuffer indexBuffer) { |
| this.material = material; |
| this.indexBuffer = indexBuffer; |
| } |
| |
| public Material getMaterial() { |
| return material; |
| } |
| |
| public ShortBuffer getIndexBuffer() { |
| return indexBuffer; |
| } |
| } |
| |
| /** |
| * {@hide} |
| */ |
| public class Group { |
| |
| private Object3D parent; |
| private String name; |
| |
| private List<MaterialIndices> materialIndices = |
| new ArrayList<MaterialIndices>(); |
| |
| public Group(Object3D parent) { |
| this.parent = parent; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public void load(DataInputStream dis) throws IOException { |
| dis.readInt(); // name length |
| this.name = dis.readUTF(); |
| |
| int numMaterials = dis.readInt(); |
| |
| for (int i = 0; i < numMaterials; i++) { |
| dis.readInt(); // material name length |
| String matName = dis.readUTF(); |
| Material material = parent.getMaterial(matName); |
| |
| int numIndices = dis.readInt(); |
| byte[] indicesBytes = new byte[numIndices * 2]; |
| dis.readFully(indicesBytes); |
| |
| // Swap bytes from network to native order if necessary |
| if (ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN) { |
| int idx = 0; |
| for (int j = 0; j < numIndices; j++) { |
| byte b0 = indicesBytes[idx]; |
| byte b1 = indicesBytes[idx + 1]; |
| indicesBytes[idx] = b1; |
| indicesBytes[idx + 1] = b0; |
| idx += 2; |
| } |
| } |
| |
| ByteBuffer ibb = ByteBuffer.allocateDirect(2*numIndices); |
| ibb.order(ByteOrder.nativeOrder()); |
| ibb.put(indicesBytes); |
| ibb.position(0); |
| |
| ShortBuffer sb = ibb.asShortBuffer(); |
| materialIndices.add(new MaterialIndices(material, sb)); |
| } |
| } |
| |
| public int getNumTriangles() { |
| int numTriangles = 0; |
| Iterator<MaterialIndices> iter = materialIndices.iterator(); |
| while (iter.hasNext()) { |
| MaterialIndices matIdx = iter.next(); |
| ShortBuffer indexBuffer = matIdx.getIndexBuffer(); |
| numTriangles += indexBuffer.capacity()/3; |
| } |
| return numTriangles; |
| } |
| |
| public void draw(GL10 gl) { |
| gl.glDisableClientState(gl.GL_COLOR_ARRAY); |
| |
| gl.glVertexPointer(3, gl.GL_FIXED, 0, parent.getVertexBuffer()); |
| gl.glEnableClientState(gl.GL_VERTEX_ARRAY); |
| |
| gl.glNormalPointer(gl.GL_FIXED, 0, parent.getNormalBuffer()); |
| gl.glEnableClientState(gl.GL_NORMAL_ARRAY); |
| |
| if (parent.hasTexcoords()) { |
| gl.glTexCoordPointer(2, gl.GL_FIXED, 0, parent.getTexcoordBuffer()); |
| gl.glEnableClientState(gl.GL_TEXTURE_COORD_ARRAY); |
| gl.glEnable(gl.GL_TEXTURE_2D); |
| } else { |
| gl.glDisable(gl.GL_TEXTURE_2D); |
| } |
| |
| Iterator<MaterialIndices> iter = materialIndices.iterator(); |
| while (iter.hasNext()) { |
| MaterialIndices matIdx = iter.next(); |
| ShortBuffer indexBuffer = matIdx.getIndexBuffer(); |
| Material mat = matIdx.getMaterial(); |
| mat.setMaterialParameters(gl); |
| if (parent.hasTexcoords() && mat.getMap_Kd().length() > 0) { |
| Texture texture = parent.getTexture(mat.getMap_Kd()); |
| texture.setTextureParameters(gl); |
| } |
| |
| gl.glDrawElements(gl.GL_TRIANGLES, |
| indexBuffer.capacity(), |
| gl.GL_UNSIGNED_SHORT, |
| indexBuffer); |
| } |
| } |
| |
| public String toString() { |
| return "Group[" + |
| "name=" + name + |
| "]"; |
| } |
| } |