One last bonus post for the new year, seeing as how I remembered I had a blog. This is really just a snippet I would ordinarily post on Wonderfl, but Wonderfl seems not to be working for me lately (if anyone wants to check out my Wonderfl profile and let me know if they can view any of my posted codes, I’d appreciate it. But I can’t).
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 |
/** * Copyright (c) 2016 Devon O. Wolfgang * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package { import com.adobe.utils.AGALMiniAssembler; import com.bit101.components.CheckBox; import com.bit101.components.HUISlider; import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Loader; import flash.display.LoaderInfo; import flash.display.Sprite; import flash.display.StageAlign; import flash.display.StageScaleMode; import flash.display3D.Context3D; import flash.display3D.Context3DProfile; import flash.display3D.Context3DProgramType; import flash.display3D.Context3DRenderMode; import flash.display3D.Context3DTextureFormat; import flash.display3D.Context3DVertexBufferFormat; import flash.display3D.IndexBuffer3D; import flash.display3D.Program3D; import flash.display3D.textures.Texture; import flash.display3D.VertexBuffer3D; import flash.events.Event; import flash.geom.Matrix3D; import flash.net.URLRequest; import flash.system.LoaderContext; /** * Zooming Droste effect * largely ported from http://codepen.io/spleen666/pen/zbhcK * @author Devon O. */ [SWF(width='465', height='465', backgroundColor='#000000', frameRate='60')] public class Main extends Sprite { private static var VERTEX_SHADER:String = <![CDATA[ m44 op, va0, vc0 mov v0, va1 ]]>; private static var FRAGMENT_SHADER:String = <![CDATA[ mov ft0.xy, v0.xy add ft0.xy, ft0.xy, fc2.xy mul ft1.x, ft0.x, ft0.x mul ft1.y, ft0.y, ft0.y add ft1.x, ft1.x, ft1.y log ft1.x, ft1.x mul ft1.x, ft1.x, fc2.z mov ft2.xy, ft0.xy // start atan2 // ft4.x = atan2(ft2.y, ft2.x) Uses: ft3, ft4, ft5 add ft2.x, ft2.x, fc1.x div ft3.x, ft2.y, ft2.x neg ft3.y, ft3.x mul ft4.y, fc1.y, ft3.x add ft4.z, fc0.x, ft3.x div ft5.x, ft4.y, ft4.z mul ft4.y, fc1.7, ft3.y add ft4.z, fc0.x, ft3.y div ft5.y, ft4.y, ft4.z slt ft4.x, ft2.x, fc0.y slt ft4.y, ft2.y, fc0.y sub ft4.z, fc0.x, ft4.x sub ft4.w, fc0.x, ft4.y mul ft3.x, ft4.z, ft4.w mul ft3.y, ft4.x, ft4.w mul ft3.z, ft4.x, ft4.y mul ft3.w, ft4.z, ft4.y sub ft4.x, ft5.x, fc0.z neg ft4.y, ft5.y mov ft4.z, ft5.x sub ft4.w, fc0.z, ft5.y mul ft4, ft4, ft3 add ft4.xy, ft4.xz, ft4.yw add ft4.x, ft4.x, ft4.y // eo atan2 mov ft1.y, ft4.x mov ft2.x, fc3.w mov ft2.y, fc3.y log ft2.y, ft2.y div ft2.y, ft2.y, fc0.w mul ft2.y, ft2.y, fc3.z neg ft2.y, ft2.y mul ft3.x, ft1.x, ft2.x mul ft3.y, ft1.y, ft2.y sub ft3.x, ft3.x, ft3.y mul ft4.x, ft1.x, ft2.y mul ft4.y, ft1.y, ft2.x add ft3.y, ft4.x, ft4.y neg ft4.x, ft3.y div ft4.x, ft4.x, fc0.w mov ft4.y, fc3.y log ft4.y, ft4.y div ft4.y, ft3.x, ft4.y sub ft4.y, ft4.y, fc3.x tex oc, ft4.xy, fs0<2d, wrap, linear, mipnone> ]]>; private var context:Context3D; private var isReady:Boolean; private var program:Program3D; private var renderMatrix:Matrix3D; private var vertexBuffer:VertexBuffer3D; private var indexBuffer:IndexBuffer3D; private var textureData:BitmapData; private var texture:Texture; private var textureWidth:int; private var textureHeight:int; private var zoomControl:HUISlider; private var autoZoom:Boolean=true; public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); stage.scaleMode = StageScaleMode.NO_SCALE; stage.align = StageAlign.TOP_LEFT; this.isReady = false; this.renderMatrix = new Matrix3D(); loadImage(); startRender(); } private function loadImage():void { var l:Loader = new Loader(); l.contentLoaderInfo.addEventListener(Event.COMPLETE, onImageLoad); var path:String = "http://assets.wonderfl.net/images/related_images/1/12/1247/124761a085cc7a1704c9fb601fe9d35e2e5a8b2e"; l.load(new URLRequest(path), new LoaderContext(true)); } private function onImageLoad(event:Event=null):void { event.currentTarget.removeEventListener(Event.COMPLETE, onImageLoad); var l:Loader = (event.currentTarget as LoaderInfo).loader; this.textureData = (l.content as Bitmap).bitmapData; requestContext(); } private function startRender():void { addEventListener(Event.ENTER_FRAME, onFrame); } private function requestContext():void { stage.stage3Ds[0].addEventListener(Event.CONTEXT3D_CREATE, onStage3dContext); stage.stage3Ds[0].requestContext3D(Context3DRenderMode.AUTO, Context3DProfile.BASELINE); } private function onStage3dContext(e:Event):void { this.context = stage.stage3Ds[0].context3D; this.context.configureBackBuffer(stage.stageWidth, stage.stageHeight, 2, false, false); createVertexBuffer(); createIndexBuffer(); createTextures(); createPrograms(); createControls(); this.isReady = true; } private function createVertexBuffer():void { var vertices:Vector. = new [ // x y u v -1.0, 1.0, 0, 0, 1.0, 1.0, 1, 0, -1.0, -1.0, 0, 1, 1.0, -1.0, 1, 1 ]; this.vertexBuffer = this.context.createVertexBuffer(4, 4); this.vertexBuffer.uploadFromVector(vertices, 0, 4); } private function createIndexBuffer():void { this.indexBuffer = this.context.createIndexBuffer(6); // 2 triangles (0, 1, 2) & (1, 3, 2) // 0 - 1 // | / | // 2 - 3 this.indexBuffer.uploadFromVector(new [0, 1, 2, 1, 3, 2], 0, 6); } private function createTextures():void { this.textureWidth = this.textureData.width; this.textureHeight = this.textureData.height; this.texture = this.context.createTexture(this.textureWidth, this.textureHeight, Context3DTextureFormat.BGRA, false); this.texture.uploadFromBitmapData(this.textureData); this.textureData.dispose(); } private function createPrograms():void { var vertexShaderAssembler:AGALMiniAssembler = new AGALMiniAssembler(); vertexShaderAssembler.assemble(Context3DProgramType.VERTEX, VERTEX_SHADER); var fragmentShaderAssembler:AGALMiniAssembler = new AGALMiniAssembler(); fragmentShaderAssembler.assemble(Context3DProgramType.FRAGMENT, FRAGMENT_SHADER); this.program = this.context.createProgram(); this.program.upload(vertexShaderAssembler.agalcode, fragmentShaderAssembler.agalcode); } private function createControls():void { var s1:HUISlider = new HUISlider(this, 5, 5, "Radius1", function(e:Event):void { radius1 = s1.value; } ); s1.minimum = -10.0; s1.maximum = 10.0; s1.tick = 1.0; s1.value = -1.0; var s2:HUISlider = new HUISlider(this, 5, 20, "Radius2", function(e:Event):void { radius2 = s2.value; } ); s2.minimum = -10.0; s2.maximum = 10.0; s2.tick = 1.0; s2.value = -2.0; var s3:HUISlider = new HUISlider(this, 5, 35, "Center X", function(e:Event):void { centerX = s3.value; } ); s3.minimum = 0.0; s3.maximum = 1.0; s3.tick = .025; s3.value = 0.50; var s4:HUISlider = new HUISlider(this, 5, 50, "Center Y", function(e:Event):void { centerY = s4.value; } ); s4.minimum = 0.0; s4.maximum = 1.0; s4.tick = .025; s4.value = .50; var s5:HUISlider = new HUISlider(this, 5, 65, "Scale", function(e:Event):void { _scale = s5.value; } ); s5.minimum = 10.0; s5.maximum = 256.0; s5.tick = 1.0; s5.value = 128; this.zoomControl = new HUISlider(this, 5, 80, "Zoom", function(e:Event):void { zoom = zoomControl.value; } ); zoomControl.minimum = 0.0; zoomControl.maximum = 10; zoomControl.tick = .025; var cb:CheckBox = new CheckBox(this, 5, 95, "Auto Zoom", function(e:Event):void { autoZoom = cb.selected; } ); cb.selected = true; } private var radius1:Number = -2.0; private var radius2:Number = 5.0; private var centerX:Number = 0.50; private var centerY:Number = 0.50; private var zoom:Number = 0.0; private var _scale:Number = 256.0; private var fc0:Vector. = new [1.0, 0.0, Math.PI, 2*Math.PI]; private var fc1:Vector. = new [1e-10, Math.PI/2, 0.0, 1.0]; private var fc2:Vector. = new [0.0, 0.0, .50, -.50]; private var fc3:Vector. = new [0.0, 0.0, 0.0, 0.0]; private function onFrame(e:Event):void { if (!this.isReady) return; this.context.clear(0, 0, 0, 1); this.renderMatrix.identity(); this.renderMatrix.appendScale(this.textureWidth / stage.stageWidth, this.textureHeight / stage.stageHeight, 1.0); this.context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 0, this.renderMatrix, true); this.context.setVertexBufferAt(0, this.vertexBuffer, 0, Context3DVertexBufferFormat.FLOAT_2); this.context.setVertexBufferAt(1, this.vertexBuffer, 2, Context3DVertexBufferFormat.FLOAT_2); fc2[0] = -centerX; fc2[1] = -centerY; fc3[0] = zoom; fc3[1] = _scale; fc3[2] = radius1; fc3[3] = radius2; if (this.autoZoom) { this.zoomControl.value += this.zoomControl.tick; if (this.zoomControl.value >= this.zoomControl.maximum) { this.zoomControl.value = 0.0; } } this.context.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 0, this.fc0, 1); this.context.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 1, this.fc1, 1); this.context.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 2, this.fc2, 1); this.context.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 3, this.fc3, 1); this.context.setTextureAt(0, this.texture); this.context.setProgram(this.program); this.context.drawTriangles(this.indexBuffer); this.context.present(); } } } |
Happy New Year!
Recent Comments