Home | History | Annotate | Download | only in fountain 
      1 /*
      2  * Copyright (C) 2008 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.fountain;
     18 
     19 import android.content.res.Resources;
     20 import android.renderscript.*;
     21 import android.util.Log;
     22 
     23 
     24 public class FountainRS {
     25     public static final int PART_COUNT = 20000;
     26 
     27     static class SomeData {
     28         public int x;
     29         public int y;
     30         public int rate;
     31         public int count;
     32         public float r;
     33         public float g;
     34         public float b;
     35     }
     36 
     37     public FountainRS() {
     38     }
     39 
     40     public void init(RenderScriptGL rs, Resources res, int width, int height) {
     41         mRS = rs;
     42         mRes = res;
     43         initRS();
     44     }
     45 
     46     public void newTouchPosition(int x, int y, int rate) {
     47         if (mSD.rate == 0) {
     48             mSD.r = ((x & 0x1) != 0) ? 0.f : 1.f;
     49             mSD.g = ((x & 0x2) != 0) ? 0.f : 1.f;
     50             mSD.b = ((x & 0x4) != 0) ? 0.f : 1.f;
     51             if ((mSD.r + mSD.g + mSD.b) < 0.9f) {
     52                 mSD.r = 0.8f;
     53                 mSD.g = 0.5f;
     54                 mSD.b = 1.f;
     55             }
     56         }
     57         mSD.rate = rate;
     58         mSD.x = x;
     59         mSD.y = y;
     60         mIntAlloc.data(mSD);
     61     }
     62 
     63 
     64     /////////////////////////////////////////
     65 
     66     private Resources mRes;
     67 
     68     private RenderScriptGL mRS;
     69     private Allocation mIntAlloc;
     70     private SimpleMesh mSM;
     71     private SomeData mSD;
     72     private Type mSDType;
     73 
     74     private void initRS() {
     75         mSD = new SomeData();
     76         mSDType = Type.createFromClass(mRS, SomeData.class, 1, "SomeData");
     77         mIntAlloc = Allocation.createTyped(mRS, mSDType);
     78         mSD.count = PART_COUNT;
     79         mIntAlloc.data(mSD);
     80 
     81         Element.Builder eb = new Element.Builder(mRS);
     82         eb.add(Element.createVector(mRS, Element.DataType.FLOAT_32, 2), "delta");
     83         eb.add(Element.createAttrib(mRS, Element.DataType.FLOAT_32, Element.DataKind.POSITION, 2), "position");
     84         eb.add(Element.createAttrib(mRS, Element.DataType.UNSIGNED_8, Element.DataKind.COLOR, 4), "color");
     85         Element primElement = eb.create();
     86 
     87 
     88         SimpleMesh.Builder smb = new SimpleMesh.Builder(mRS);
     89         int vtxSlot = smb.addVertexType(primElement, PART_COUNT);
     90         smb.setPrimitive(Primitive.POINT);
     91         mSM = smb.create();
     92         mSM.setName("PartMesh");
     93 
     94         Allocation partAlloc = mSM.createVertexAllocation(vtxSlot);
     95         partAlloc.setName("PartBuffer");
     96         mSM.bindVertexAllocation(partAlloc, 0);
     97 
     98         // All setup of named objects should be done by this point
     99         // because we are about to compile the script.
    100         ScriptC.Builder sb = new ScriptC.Builder(mRS);
    101         sb.setScript(mRes, R.raw.fountain);
    102         sb.setRoot(true);
    103         sb.setType(mSDType, "Control", 0);
    104         sb.setType(mSM.getVertexType(0), "point", 1);
    105         Script script = sb.create();
    106         script.setClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    107 
    108         script.bindAllocation(mIntAlloc, 0);
    109         script.bindAllocation(partAlloc, 1);
    110         mRS.contextBindRootScript(script);
    111     }
    112 
    113 }
    114 
    115 
    116