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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 com.android.scenegraph.Scene;
     23 import com.android.scenegraph.SceneManager;
     24 
     25 import android.renderscript.Element;
     26 import android.renderscript.Float4;
     27 import android.renderscript.Matrix4f;
     28 import android.renderscript.ProgramFragment;
     29 import android.renderscript.ProgramStore;
     30 import android.renderscript.ProgramVertex;
     31 import android.renderscript.RenderScriptGL;
     32 import android.util.Log;
     33 
     34 /**
     35  * @hide
     36  */
     37 public 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 }
    142 
    143 
    144 
    145 
    146 
    147