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 com.android.scenegraph.Scene;
23import com.android.scenegraph.SceneManager;
24
25import android.renderscript.Element;
26import android.renderscript.Float4;
27import android.renderscript.Matrix4f;
28import android.renderscript.ProgramFragment;
29import android.renderscript.ProgramStore;
30import android.renderscript.ProgramVertex;
31import android.renderscript.RenderScriptGL;
32import android.util.Log;
33
34/**
35 * @hide
36 */
37public class Float4Param extends ShaderParam {
38    private static String TAG = "Float4Param";
39
40    LightBase mLight;
41
42    public Float4Param(String name) {
43        super(name);
44    }
45
46    public Float4Param(String name, float x) {
47        super(name);
48        set(x, 0, 0, 0);
49    }
50
51    public Float4Param(String name, float x, float y) {
52        super(name);
53        set(x, y, 0, 0);
54    }
55
56    public Float4Param(String name, float x, float y, float z) {
57        super(name);
58        set(x, y, z, 0);
59    }
60
61    public Float4Param(String name, float x, float y, float z, float w) {
62        super(name);
63        set(x, y, z, w);
64    }
65
66    void set(float x, float y, float z, float w) {
67        mData.float_value.x = x;
68        mData.float_value.y = y;
69        mData.float_value.z = z;
70        mData.float_value.w = w;
71        if (mField != null) {
72            mField.set_float_value(0, mData.float_value, true);
73        }
74        incTimestamp();
75    }
76
77    public void setValue(Float4 v) {
78        set(v.x, v.y, v.z, v.w);
79    }
80
81    public Float4 getValue() {
82        return mData.float_value;
83    }
84
85    public void setLight(LightBase l) {
86        mLight = l;
87        if (mField != null) {
88            mData.light = mLight.getRSData().getAllocation();
89            mField.set_light(0, mData.light, true);
90        }
91        incTimestamp();
92    }
93
94    boolean findLight(String property) {
95        String indexStr = mParamName.substring(property.length() + 1);
96        if (indexStr == null) {
97            Log.e(TAG, "Invalid light index.");
98            return false;
99        }
100        int index = Integer.parseInt(indexStr);
101        if (index == -1) {
102            return false;
103        }
104        Scene parentScene = SceneManager.getInstance().getActiveScene();
105        ArrayList<LightBase> allLights = parentScene.getLights();
106        if (index >= allLights.size()) {
107            return false;
108        }
109        mLight = allLights.get(index);
110        if (mLight == null) {
111            return false;
112        }
113        return true;
114    }
115
116    int getTypeFromName() {
117        int paramType = ScriptC_export.const_ShaderParam_FLOAT4_DATA;
118        if (mParamName.equalsIgnoreCase(cameraPos)) {
119            paramType = ScriptC_export.const_ShaderParam_FLOAT4_CAMERA_POS;
120        } else if(mParamName.equalsIgnoreCase(cameraDir)) {
121            paramType = ScriptC_export.const_ShaderParam_FLOAT4_CAMERA_DIR;
122        } else if(mParamName.startsWith(lightColor) && findLight(lightColor)) {
123            paramType = ScriptC_export.const_ShaderParam_FLOAT4_LIGHT_COLOR;
124        } else if(mParamName.startsWith(lightPos) && findLight(lightPos)) {
125            paramType = ScriptC_export.const_ShaderParam_FLOAT4_LIGHT_POS;
126        } else if(mParamName.startsWith(lightDir) && findLight(lightDir)) {
127            paramType = ScriptC_export.const_ShaderParam_FLOAT4_LIGHT_DIR;
128        }
129        return paramType;
130    }
131
132    void initLocalData() {
133        mData.type = getTypeFromName();
134        if (mCamera != null) {
135            mData.camera = mCamera.getRSData().getAllocation();
136        }
137        if (mLight != null) {
138            mData.light = mLight.getRSData().getAllocation();
139        }
140    }
141}
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