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.Float3;
23import android.renderscript.Float4;
24import android.renderscript.Matrix4f;
25import android.renderscript.RenderScriptGL;
26import android.util.Log;
27
28/**
29 * @hide
30 */
31public 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
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112