// forked from checkmate's adobe challenge 1 /** * * "Use Flash Player 10 drawing API, * specifically drawTriangles. * My favorite part of the new capabilities * is the ability to specify * UVT texture mapping data." * by Justin Everett-Church * * This code is a example of drawTriangle. */ package { //Kaleidoscope: //Web camera is required. import flash.display.*; import flash.events.*; import flash.geom.Matrix; import flash.media.Camera; import flash.media.Video; import flash.text.TextField; import flash.net.FileReference; import flash.net.FileFilter; [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="60")] public class drawTriangleTest extends Sprite{ private var bmpd :BitmapData; private var verD :Vector.<Number>; private var indD :Vector.<int>; private var uvtD :Vector.<Number>; private var uvID :Vector.<int>; private var uvVal :Vector.<Number>; private var _display :DisplayObject; private var ptnShape :Shape; private var ptn :BitmapData; private var camera :Camera; private var video :Video; private var mtx:Matrix; private var mtxt:Matrix; private var mtx0:Matrix; private var psize :Number = 100; private var hx :Number = 465 / 2; private var hy :Number = 465 / 2; private var tx :Number = hx; private var ty :Number = hy; private var a :Number = 0; private var fileReference:FileReference; private var loader:Loader; public function drawTriangleTest() { initTriangles(); //texture src triangle bmpd = new BitmapData( 320, 240 ); ptn = new BitmapData( 3 * psize, 2 * psize * Math.sin(Math.PI / 3 ) ); ptnShape = new Shape(); mtx = new Matrix(); mtx0 = new Matrix(); mtxt = new Matrix( 1, 0, 0, 1, psize / 2 ); camera = Camera.getCamera(); if ( camera == null ) { setAltImage(); }else { camera.setMode(320, 240, 15); video = new Video(320, 240); video.attachCamera(camera); _display = video; camera.addEventListener(ActivityEvent.ACTIVITY, cameraStart); } } private function cameraStart(e:ActivityEvent):void { camera.removeEventListener( ActivityEvent.ACTIVITY, cameraStart ); addEventListener( Event.ENTER_FRAME, handleEnterFrame ); } private function handleEnterFrame(e:Event):void { bmpd.draw( _display, mtx0 ); tx += ( mouseX - tx ) * 0.2; ty += ( mouseY - ty ) * 0.2; var ra:Number = 2 * Math.PI * (hx - tx) / 465; var nv:Number = 0.5 - 0.4 * Math.min( 1, Math.abs(ty/465) ); var i:int; for ( i = 0; i < 3; i++ ) { var aa:Number = ra + i * 2 * Math.PI / 3; uvVal[i*2] = ( 0.5 + nv * Math.cos( aa ) ); uvVal[i*2+1] = ( 0.5 + nv * Math.sin( aa ) ); } var len:int = uvID.length; for ( i = 0; i < len; i++ ) { uvtD[i] = uvVal[ uvID[i] ]; } ptnShape.graphics.clear(); ptnShape.graphics.beginBitmapFill( bmpd ); ptnShape.graphics.drawTriangles( verD, indD, uvtD ); ptnShape.graphics.endFill(); ptn.draw( ptnShape, mtxt ); mtx.identity(); mtx.scale( nv / 0.5, nv / 0.5 ); mtx.rotate( a ); mtx.translate( hx, hy ); graphics.clear(); graphics.beginBitmapFill( ptn, mtx, true ); graphics.drawRect( 0, 0, 465, 465 ); graphics.endFill(); a += 0.005; } private function initTriangles():void { var xx:Number = psize; var yy:Number = psize * Math.sin(Math.PI / 3 );; uvVal = Vector.<Number>( [0,0,1,0,1,1] ); verD = new Vector.<Number>(); uvID = new Vector.<int>(); verD.push( xx, yy ); uvID.push( 0, 1 );//0 var uf:Boolean = true; for ( var i:int = 0; i < 6; i++ ) { var vx:Number = psize * Math.cos( i * Math.PI / 3 ); var vy:Number = psize * Math.sin( i * Math.PI / 3 ); verD.push( xx + vx, yy + vy ); if( uf=!uf ) uvID.push( 2, 3 ); //1 else uvID.push( 4, 5 ); //2 } var ex:Number = psize * Math.cos( Math.PI / 3 ); verD.push( 3 * xx, yy ); uvID.push( 2, 3 );//1 verD.push( 2 * xx + ex, 2 * yy ); uvID.push( 0, 1 );//0 verD.push( - ex, 2 * yy ); uvID.push( 0, 1 );//0 verD.push( - xx, yy ); uvID.push( 4, 5 );//2 verD.push( - ex, 0 ); uvID.push( 0, 1 );//0 verD.push( 2 * xx + ex, 0 ); uvID.push( 0, 1 );//0 uvtD = new Vector.<Number>( uvID.length ); indD = Vector.<int>([ 0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5, 0, 5, 6, 0, 6, 1, 1, 7, 8, 1, 8, 2, 3, 9, 4, 4, 9, 10, 4, 10, 11, 4, 11, 5, 6, 12, 1, 1, 12, 7 ]); } private function setAltImage():void { var tf:TextField = new TextField(); tf.autoSize = "left"; tf.x = 20; tf.y = 20; tf.text = "WebCamera is required.\nClick stage to select alternative image."; tf.selectable = false; tf.textColor = 0xffffff; addChild( tf ); // fileReference = new FileReference(); fileReference.addEventListener( Event.SELECT, select ); fileReference.addEventListener( Event.COMPLETE, complete ); loader = new Loader(); loader.contentLoaderInfo.addEventListener( Event.INIT, imageInit ); // stage.addEventListener( MouseEvent.CLICK, ffstart ); } private function ffstart( e:MouseEvent ):void { var fileFilter:FileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png"); fileReference.browse([fileFilter]); } private function select( e:Event ):void { fileReference.load(); } private function complete(e:Event):void { loader.loadBytes( fileReference.data ); } private function imageInit(e:Event):void { removeChildAt( 0 ); _display = Bitmap( loader.content ); mtx0 = new Matrix( 320 / _display.width, 0, 0, 240 / _display.height ); loader.removeEventListener( Event.INIT, imageInit ); stage.removeEventListener( MouseEvent.CLICK, ffstart ); fileReference.removeEventListener( Event.SELECT, select ); fileReference.removeEventListener( Event.COMPLETE, complete ); addEventListener( Event.ENTER_FRAME, handleEnterFrame ); } } }