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/*
* Copyright (C) 2011 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 com.android.scenegraph;
import java.lang.Math;
import java.util.ArrayList;
import android.renderscript.*;
import android.renderscript.Matrix4f;
import android.util.Log;
/**
* @hide
*/
public abstract class Transform extends SceneGraphBase {
Transform mParent;
ArrayList<Transform> mChildren;
ScriptField_SgTransform mField;
ScriptField_SgTransform.Item mTransformData;
public Transform() {
mChildren = new ArrayList<Transform>();
mParent = null;
}
public void appendChild(Transform t) {
mChildren.add(t);
t.mParent = this;
updateRSChildData(true);
}
abstract void initLocalData();
void updateRSChildData(boolean copyData) {
if (mField == null) {
return;
}
RenderScriptGL rs = SceneManager.getRS();
if (mChildren.size() != 0) {
Allocation childRSData = Allocation.createSized(rs, Element.ALLOCATION(rs),
mChildren.size());
mTransformData.children = childRSData;
Allocation[] childrenAllocs = new Allocation[mChildren.size()];
for (int i = 0; i < mChildren.size(); i ++) {
Transform child = mChildren.get(i);
childrenAllocs[i] = child.getRSData().getAllocation();
}
childRSData.copyFrom(childrenAllocs);
}
if (copyData) {
mField.set(mTransformData, 0, true);
}
}
ScriptField_SgTransform getRSData() {
if (mField != null) {
return mField;
}
RenderScriptGL rs = SceneManager.getRS();
if (rs == null) {
return null;
}
mField = new ScriptField_SgTransform(rs, 1);
mTransformData = new ScriptField_SgTransform.Item();
mTransformData.name = getNameAlloc(rs);
mTransformData.isDirty = 1;
mTransformData.timestamp = 1;
initLocalData();
updateRSChildData(false);
mField.set(mTransformData, 0, true);
return mField;
}
}
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