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.example.android.rs.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 = 50000; 26 FountainRS()27 public FountainRS() { 28 } 29 30 private Resources mRes; 31 private RenderScriptGL mRS; 32 private ScriptC_fountain mScript; init(RenderScriptGL rs, Resources res)33 public void init(RenderScriptGL rs, Resources res) { 34 mRS = rs; 35 mRes = res; 36 37 ProgramFragmentFixedFunction.Builder pfb = new ProgramFragmentFixedFunction.Builder(rs); 38 pfb.setVaryingColor(true); 39 rs.bindProgramFragment(pfb.create()); 40 41 ScriptField_Point points = new ScriptField_Point(mRS, PART_COUNT);// 42 // Allocation.USAGE_GRAPHICS_VERTEX); 43 44 Mesh.AllocationBuilder smb = new Mesh.AllocationBuilder(mRS); 45 smb.addVertexAllocation(points.getAllocation()); 46 smb.addIndexSetType(Mesh.Primitive.POINT); 47 Mesh sm = smb.create(); 48 49 mScript = new ScriptC_fountain(mRS, mRes, R.raw.fountain); 50 mScript.set_partMesh(sm); 51 mScript.bind_point(points); 52 mRS.bindRootScript(mScript); 53 } 54 55 boolean holdingColor[] = new boolean[10]; newTouchPosition(float x, float y, float pressure, int id)56 public void newTouchPosition(float x, float y, float pressure, int id) { 57 if (id >= holdingColor.length) { 58 return; 59 } 60 int rate = (int)(pressure * pressure * 500.f); 61 if (rate > 500) { 62 rate = 500; 63 } 64 if (rate > 0) { 65 mScript.invoke_addParticles(rate, x, y, id, !holdingColor[id]); 66 holdingColor[id] = true; 67 } else { 68 holdingColor[id] = false; 69 } 70 71 } 72 } 73