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      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 
     17 package com.android.scenegraph;
     18 
     19 import java.lang.Math;
     20 import java.util.ArrayList;
     21 
     22 import android.renderscript.Float3;
     23 import android.renderscript.Float4;
     24 import android.renderscript.Matrix4f;
     25 import android.renderscript.RenderScriptGL;
     26 import android.util.Log;
     27 
     28 /**
     29  * @hide
     30  */
     31 public abstract class LightBase extends SceneGraphBase {
     32     static final int RS_LIGHT_POINT = 0;
     33     static final int RS_LIGHT_DIRECTIONAL = 1;
     34 
     35     ScriptField_Light_s mField;
     36     ScriptField_Light_s.Item mFieldData;
     37     Transform mTransform;
     38     Float4 mColor;
     39     float mIntensity;
     40     public LightBase() {
     41         mColor = new Float4(0.0f, 0.0f, 0.0f, 0.0f);
     42         mIntensity = 1.0f;
     43     }
     44 
     45     public void setTransform(Transform t) {
     46         mTransform = t;
     47         updateRSData();
     48     }
     49 
     50     public void setColor(float r, float g, float b) {
     51         mColor.x = r;
     52         mColor.y = g;
     53         mColor.z = b;
     54         updateRSData();
     55     }
     56 
     57     public void setColor(Float3 c) {
     58         setColor(c.x, c.y, c.z);
     59     }
     60 
     61     public void setIntensity(float i) {
     62         mIntensity = i;
     63         updateRSData();
     64     }
     65 
     66     public void setName(String n) {
     67         super.setName(n);
     68         updateRSData();
     69     }
     70 
     71     protected void updateRSData() {
     72         if (mField == null) {
     73             return;
     74         }
     75         RenderScriptGL rs = SceneManager.getRS();
     76         mFieldData.transformMatrix = mTransform.getRSData().getAllocation();
     77         mFieldData.name = getNameAlloc(rs);
     78         mFieldData.color = mColor;
     79         mFieldData.intensity = mIntensity;
     80 
     81         initLocalData();
     82 
     83         mField.set(mFieldData, 0, true);
     84     }
     85 
     86     abstract void initLocalData();
     87 
     88     ScriptField_Light_s getRSData() {
     89         if (mField != null) {
     90             return mField;
     91         }
     92 
     93         RenderScriptGL rs = SceneManager.getRS();
     94         if (rs == null) {
     95             return null;
     96         }
     97         if (mField == null) {
     98             mField = new ScriptField_Light_s(rs, 1);
     99             mFieldData = new ScriptField_Light_s.Item();
    100         }
    101 
    102         updateRSData();
    103 
    104         return mField;
    105     }
    106 }
    107 
    108 
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