1 /* 2 * Copyright (C) 2009 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 18 package com.android.film; 19 20 import java.io.Writer; 21 import java.lang.Math; 22 import android.util.Log; 23 24 import android.renderscript.RenderScript; 25 import android.renderscript.SimpleMesh; 26 27 28 class FilmStripMesh { 29 30 class Vertex { 31 float nx; 32 float ny; 33 float nz; 34 float s; 35 float t; 36 float x; 37 float y; 38 float z; 39 40 Vertex() { 41 nx = 0; 42 ny = 0; 43 nz = 0; 44 s = 0; 45 t = 0; 46 x = 0; 47 y = 0; 48 z = 0; 49 } 50 51 void xyz(float _x, float _y, float _z) { 52 x = _x; 53 y = _y; 54 z = _z; 55 } 56 57 void nxyz(float _x, float _y, float _z) { 58 nx = _x; 59 ny = _y; 60 nz = _z; 61 } 62 63 void st(float _s, float _t) { 64 s = _s; 65 t = _t; 66 } 67 68 void computeNorm(Vertex v1, Vertex v2) { 69 float dx = v1.x - v2.x; 70 float dy = v1.y - v2.y; 71 float dz = v1.z - v2.z; 72 float len = (float)java.lang.Math.sqrt(dx*dx + dy*dy + dz*dz); 73 dx /= len; 74 dy /= len; 75 dz /= len; 76 77 nx = dx * dz; 78 ny = dy * dz; 79 nz = (float)java.lang.Math.sqrt(dx*dx + dy*dy); 80 81 len = (float)java.lang.Math.sqrt(nx*nx + ny*ny + nz*nz); 82 nx /= len; 83 ny /= len; 84 nz /= len; 85 } 86 } 87 88 int[] mTriangleOffsets; 89 float[] mTriangleOffsetsTex; 90 int mTriangleOffsetsCount; 91 92 SimpleMesh init(RenderScript rs) 93 { 94 float vtx[] = new float[] { 95 60.431003f, 124.482050f, 96 60.862074f, 120.872604f, 97 61.705303f, 117.336662f, 98 62.949505f, 113.921127f, 99 64.578177f, 110.671304f, 100 66.569716f, 107.630302f, 101 68.897703f, 104.838457f, 102 71.531259f, 102.332803f, 103 74.435452f, 100.146577f, 104 77.571757f, 98.308777f, 105 80.898574f, 96.843781f, 106 84.371773f, 95.771023f, 107 87.945283f, 95.104731f, 108 98.958994f, 95.267098f, 109 109.489523f, 98.497596f, 110 118.699582f, 104.539366f, 111 125.856872f, 112.912022f, 112 130.392311f, 122.949849f, 113 131.945283f, 133.854731f, 114 130.392311f, 144.759613f, 115 125.856872f, 154.797439f, 116 118.699582f, 163.170096f, 117 109.489523f, 169.211866f, 118 98.958994f, 172.442364f, 119 87.945283f, 172.604731f, 120 72.507313f, 172.672927f, 121 57.678920f, 168.377071f, 122 44.668135f, 160.067134f, 123 34.534908f, 148.420104f, 124 28.104767f, 134.384831f, 125 25.901557f, 119.104731f, 126 28.104767f, 103.824631f, 127 34.534908f, 89.789358f, 128 44.668135f, 78.142327f, 129 57.678920f, 69.832390f, 130 72.507313f, 65.536534f, 131 87.945283f, 65.604731f, 132 106.918117f, 65.688542f, 133 125.141795f, 60.409056f, 134 141.131686f, 50.196376f, 135 153.585137f, 35.882502f, 136 161.487600f, 18.633545f, 137 164.195283f, -0.145269f, 138 161.487600f, -18.924084f, 139 153.585137f, -36.173040f, 140 141.131686f, -50.486914f, 141 125.141795f, -60.699594f, 142 106.918117f, -65.979081f, 143 87.945283f, -65.895269f, 144 80f, -65.895269f, 145 60f, -65.895269f, 146 40f, -65.895269f, 147 20f, -65.895269f, 148 0f, -65.895269f, 149 -20f, -65.895269f, 150 -40f, -65.895269f, 151 -60f, -65.895269f, 152 -80f, -65.895269f, 153 -87.945283f, -65.895269f, 154 -106.918117f, -65.979081f, 155 -125.141795f, -60.699594f, 156 -141.131686f, -50.486914f, 157 -153.585137f, -36.173040f, 158 -161.487600f, -18.924084f, 159 -164.195283f, -0.145269f, 160 -161.487600f, 18.633545f, 161 -153.585137f, 35.882502f, 162 -141.131686f, 50.196376f, 163 -125.141795f, 60.409056f, 164 -106.918117f, 65.688542f, 165 -87.945283f, 65.604731f, 166 -72.507313f, 65.536534f, 167 -57.678920f, 69.832390f, 168 -44.668135f, 78.142327f, 169 -34.534908f, 89.789358f, 170 -28.104767f, 103.824631f, 171 -25.901557f, 119.104731f, 172 -28.104767f, 134.384831f, 173 -34.534908f, 148.420104f, 174 -44.668135f, 160.067134f, 175 -57.678920f, 168.377071f, 176 -72.507313f, 172.672927f, 177 -87.945283f, 172.604731f, 178 -98.958994f, 172.442364f, 179 -109.489523f, 169.211866f, 180 -118.699582f, 163.170096f, 181 -125.856872f, 154.797439f, 182 -130.392311f, 144.759613f, 183 -131.945283f, 133.854731f, 184 -130.392311f, 122.949849f, 185 -125.856872f, 112.912022f, 186 -118.699582f, 104.539366f, 187 -109.489523f, 98.497596f, 188 -98.958994f, 95.267098f, 189 -87.945283f, 95.104731f, 190 -84.371773f, 95.771023f, 191 -80.898574f, 96.843781f, 192 -77.571757f, 98.308777f, 193 -74.435452f, 100.146577f, 194 -71.531259f, 102.332803f, 195 -68.897703f, 104.838457f, 196 -66.569716f, 107.630302f, 197 -64.578177f, 110.671304f, 198 -62.949505f, 113.921127f, 199 -61.705303f, 117.336662f, 200 -60.862074f, 120.872604f, 201 -60.431003f, 124.482050f 202 }; 203 204 205 mTriangleOffsets = new int[64]; 206 mTriangleOffsetsTex = new float[64]; 207 208 mTriangleOffsets[0] = 0; 209 mTriangleOffsetsCount = 1; 210 211 Vertex t = new Vertex(); 212 t.nxyz(1, 0, 0); 213 int count = vtx.length / 2; 214 215 SimpleMesh.TriangleMeshBuilder tm = new SimpleMesh.TriangleMeshBuilder( 216 rs, 3, 217 SimpleMesh.TriangleMeshBuilder.NORMAL | SimpleMesh.TriangleMeshBuilder.TEXTURE_0); 218 219 float runningS = 0; 220 for (int ct=0; ct < (count-1); ct++) { 221 t.x = -vtx[ct*2] / 100.f; 222 t.z = vtx[ct*2+1] / 100.f; 223 t.s = runningS; 224 t.nx = (vtx[ct*2+3] - vtx[ct*2 +1]); 225 t.ny = (vtx[ct*2+2] - vtx[ct*2 ]); 226 float len = (float)java.lang.Math.sqrt(t.nx * t.nx + t.ny * t.ny); 227 runningS += len / 100; 228 t.nx /= len; 229 t.ny /= len; 230 t.y = -0.5f; 231 t.t = 0; 232 tm.setNormal(t.nx, t.ny, t.nz); 233 tm.setTexture(t.s, t.t); 234 tm.addVertex(t.x, t.y, t.z); 235 //android.util.Log.e("rs", "vtx x="+t.x+" y="+t.y+" z="+t.z+" s="+t.s+" t="+t.t); 236 t.y = .5f; 237 t.t = 1; 238 tm.setTexture(t.s, t.t); 239 tm.addVertex(t.x, t.y, t.z); 240 //android.util.Log.e("rs", "vtx x="+t.x+" y="+t.y+" z="+t.z+" s="+t.s+" t="+t.t); 241 242 if((runningS*2) > mTriangleOffsetsCount) { 243 mTriangleOffsets[mTriangleOffsetsCount] = ct*2 * 3; 244 mTriangleOffsetsTex[mTriangleOffsetsCount] = t.s; 245 mTriangleOffsetsCount ++; 246 } 247 } 248 249 count = (count * 2 - 2); 250 for (int ct=0; ct < (count-2); ct+= 2) { 251 tm.addTriangle(ct, ct+1, ct+2); 252 tm.addTriangle(ct+1, ct+3, ct+2); 253 } 254 return tm.create(); 255 } 256 257 258 } 259 260
