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
17package com.android.fountain_v11;
18
19import android.content.res.Resources;
20import android.renderscript.*;
21import android.util.Log;
22
23
24public class FountainRS {
25    public static final int PART_COUNT = 50000;
26
27    public FountainRS() {
28    }
29
30    private Resources mRes;
31    private RenderScriptGL mRS;
32    private ScriptC_fountain mScript;
33    public void init(RenderScriptGL rs, Resources res, int width, int height) {
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];
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