1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.scenegraph; 18 19import java.lang.Math; 20import java.util.ArrayList; 21 22import android.renderscript.*; 23import android.renderscript.Matrix4f; 24import android.util.Log; 25 26/** 27 * @hide 28 */ 29public abstract class Transform extends SceneGraphBase { 30 Transform mParent; 31 ArrayList<Transform> mChildren; 32 33 ScriptField_SgTransform mField; 34 ScriptField_SgTransform.Item mTransformData; 35 36 public Transform() { 37 mChildren = new ArrayList<Transform>(); 38 mParent = null; 39 } 40 41 public void appendChild(Transform t) { 42 mChildren.add(t); 43 t.mParent = this; 44 updateRSChildData(true); 45 } 46 47 abstract void initLocalData(); 48 49 void updateRSChildData(boolean copyData) { 50 if (mField == null) { 51 return; 52 } 53 RenderScriptGL rs = SceneManager.getRS(); 54 if (mChildren.size() != 0) { 55 Allocation childRSData = Allocation.createSized(rs, Element.ALLOCATION(rs), 56 mChildren.size()); 57 mTransformData.children = childRSData; 58 59 Allocation[] childrenAllocs = new Allocation[mChildren.size()]; 60 for (int i = 0; i < mChildren.size(); i ++) { 61 Transform child = mChildren.get(i); 62 childrenAllocs[i] = child.getRSData().getAllocation(); 63 } 64 childRSData.copyFrom(childrenAllocs); 65 } 66 if (copyData) { 67 mField.set(mTransformData, 0, true); 68 } 69 } 70 71 ScriptField_SgTransform getRSData() { 72 if (mField != null) { 73 return mField; 74 } 75 76 RenderScriptGL rs = SceneManager.getRS(); 77 if (rs == null) { 78 return null; 79 } 80 mField = new ScriptField_SgTransform(rs, 1); 81 82 mTransformData = new ScriptField_SgTransform.Item(); 83 mTransformData.name = getNameAlloc(rs); 84 mTransformData.isDirty = 1; 85 mTransformData.timestamp = 1; 86 87 initLocalData(); 88 updateRSChildData(false); 89 90 mField.set(mTransformData, 0, true); 91 return mField; 92 } 93} 94 95 96 97 98 99