Forked from:: k0rin's Famous Triangle Trick

forked from: Famous Triangle Trick

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lines:145
license : MIT License
modified : 2011-10-13 00:42:00

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// forked from k0rin's Famous Triangle Trick
package {
    import flash.display.*;
    import flash.events.*;
    import flash.filters.*;
    import flash.geom.Matrix;
    import flash.text.*;
    
    // My first use of Tweener. Brilliant library!
    import caurina.transitions.Tweener;
    import caurina.transitions.properties.CurveModifiers;
    
    [SWF(width = "465", height = "465", frameRate = "60", backgroundColor="0x38502A")]
    public class TriangleTrick extends Sprite {
        private const W:Number = stage.stageWidth;
        private const H:Number = stage.stageHeight;
        
        private const ORIGIN_X:Number = W * 0.06;
        private const ORIGIN_Y:Number = H * 0.63;
        private const GRID_SPACING:int = 30;
        
        private var polygons:Vector.<Shape> = new Vector.<Shape>();
        private var polygonData:Array = [
            { x:[0, 5], y:[0, 2], bezier:{ x:0, y:9, rotation:20 }, color:0xFF3300, vertices:[0, 0,  8, 0,  8, 3] }, 
            { x:[8, 0], y:[3, 0], bezier:{ x:4, y:4, rotation:-5 }, color:0x0033FF, vertices:[0, 0,  5, 0,  5, 2] }, 
            { x:[8, 5], y:[1, 0], bezier:{ x:5, y:1, rotation:10 }, color:0xFFFF33, vertices:[0, 0,  2, 0,  2, 1,  5, 1,  5, 2,  0, 2] }, 
            { x:[8, 8], y:[0, 0], bezier:{ x:9, y:-2.5, rotation:20 }, color:0x00FF00, vertices:[0, 0,  5, 0,  5, 2,  2, 2,  2, 1,  0, 1] }, 
        ];
        private var triangleState:int = 0;
        
        private const MESSAGES:Array = [
            // Want some nifty messages but I'm not good at English... Please help!
            "Clica!", 
            "Has vist el que passa!?", 
            "Mira-ho atentament!", 
            "No ho entens?", 
        ];
        private var messageNo:int = 0;
        private var textField:TextField = new TextField();
        
        private var circle:Shape = new Shape();
        private var cursor:Shape = new Shape();
        
        private const CURSOR_Y:Number = H * 0.95;
        
        public function TriangleTrick():void {
            CurveModifiers.init();
            
            var grid:Shape = new Shape();
            var g:Graphics = grid.graphics;
            g.lineStyle(1, 0x000000, 0.2);
            for (var i:int = -30; i < 30; i++) {
                g.drawRect(ORIGIN_X + GRID_SPACING * i + 2, -400, 0, 1600);
                g.drawRect(-400, ORIGIN_Y + GRID_SPACING * i + 2, 1600, 0);
            }
            addChild(grid);
            
            textField.defaultTextFormat = new TextFormat("Helvetica", 20, 0x444444, true, false);
            textField.text = MESSAGES[messageNo];
            textField.autoSize = TextFieldAutoSize.CENTER;
            textField.selectable = false;
            textField.x = W * 0.42;
            textField.y = H * 0.73;
            textField.filters = [ new GlowFilter(0xFFFFFF, 1, 40, 30, 8) ];
            addChild(textField);
            
            // Couldn't use DisplayObject.transform to zoom because lines' thickness is treated as integer.
            function toPixelX(graphX:Number):Number { return ORIGIN_X + graphX * GRID_SPACING; }
            function toPixelY(graphY:Number):Number { return ORIGIN_Y - graphY * GRID_SPACING; }
            
            var triangle:Sprite = new Sprite();
            for (i = 0; i < polygonData.length; i++) {
                var pd:Object = polygonData[i];
                
                // scale polygon data
                for (var j:int = 0; j < pd.x.length; j++) {
                    pd.x[j] = toPixelX(pd.x[j]);
                    pd.y[j] = toPixelY(pd.y[j]);
                }
                pd.bezier.x = toPixelX(pd.bezier.x);
                pd.bezier.y = toPixelY(pd.bezier.y);
                for (j = 0; j < pd.vertices.length; j += 2) {
                    pd.vertices[j    ] *=  GRID_SPACING;
                    pd.vertices[j + 1] *= -GRID_SPACING;
                }
                
                // create a polygon
                var polygon:Shape = new Shape();
                g = polygon.graphics;
                g.lineStyle(4, 0xFFFFFF);
                var matrix:Matrix = new Matrix();
                matrix.createGradientBox(GRID_SPACING * 4, GRID_SPACING * 4, 70 * Math.PI / 180, 0, -95);
                g.beginGradientFill(GradientType.LINEAR, [0xFFFFFF, pd.color], [0.5, 0.6], [0, 255], matrix);
                var commands:Vector.<int> = Vector.<int>([GraphicsPathCommand.MOVE_TO]);
                for (j = 0; j < pd.vertices.length / 2; j++) {
                    commands.push(GraphicsPathCommand.LINE_TO);
                }
                g.drawPath(commands, Vector.<Number>(pd.vertices.concat(pd.vertices[0], pd.vertices[1])));
                g.endFill();

polygon.x = pd.x[0];
                polygon.y = pd.y[0];
                triangle.addChild(polygon);
                polygons.push(polygon);
            }
            triangle.filters = [ new DropShadowFilter(4, 45, 0x000000, 0.5, 0, 0) ];
            addChild(triangle);
            
            g = circle.graphics;
            g.lineStyle(8, 0xFF0000, 0.8);
            g.drawCircle(toPixelX(7.5), toPixelY(0.5), 1.2 * GRID_SPACING);
            circle.alpha = 0;
            addChild(circle);
            
            g = cursor.graphics;
            g.beginFill(0xFFFFFF);
            g.drawPath(Vector.<int>([1, 2, 2, 2]), Vector.<Number>([0, 0,  -1, -1.7,  1, -1.7,  0, 0]));
            cursor.x = W * 0.945;
            cursor.y = CURSOR_Y;
            cursor.scaleX = cursor.scaleY = 5;
            cursor.filters = [ new DropShadowFilter(3, 45, 0x000000, 0.5, 0, 0) ];
            addChild(cursor);
            enableClick();
        }
        
        private function enableClick():void {
            stage.addEventListener(MouseEvent.CLICK, clickHandler);
            tickCursor();
        }
        
        private function disableClick():void {
            stage.removeEventListener(MouseEvent.CLICK, clickHandler);
            Tweener.removeTweens(cursor);
            cursor.alpha = 0;
        }
        
        private function clickHandler(event:MouseEvent):void {
            disableClick();
            
            // an easy way to flip integers
            triangleState = 1 - triangleState;
            
            for (var i:int = 0; i < polygons.length; i++) {
                Tweener.addTween(polygons[i], { 
                    // Which transition type do you like?
                    time:0.7, transition:"easeOutCubic", 
                    x:polygonData[i].x[triangleState], 
                    y:polygonData[i].y[triangleState], 
                    rotation:0, 
                    _bezier:polygonData[i].bezier} );
            }
            
            if (triangleState == 1) {
                circle.x = -0;
                circle.y = -30;
                Tweener.addTween(circle, { delay:0.7, time:0.6, transition:"easeOutElastic", x:0, y:0 } );
                Tweener.addTween(circle, { delay:0.7, time:0.2, transition:"easeOutQuart", alpha:1 });
            } else {
                Tweener.addTween(circle, { time:0.2, transition:"easeOutQuart", alpha:0 });
            }
            
            if (++messageNo >= MESSAGES.length) {
                messageNo = 1;
            }
            textField.text = MESSAGES[messageNo];
            textField.alpha = 0;
            Tweener.addTween(textField, { delay:0.6, time:0.2, transition:"easeInQuart", alpha:1, onComplete:enableClick } );
        }
        
        private function tickCursor():void {
            cursor.y = CURSOR_Y;
            Tweener.addTween(cursor, { time:0.25, transition:"linear", y:CURSOR_Y + 3 } );
            Tweener.addTween(cursor, { time:0.1, transition:"easeOutSine", alpha:1 } );
            Tweener.addTween(cursor, { delay:0.15, time:0.1, transition:"easeOutSine", alpha:0 } );
            Tweener.addTween(cursor, { delay:0.45, onComplete:tickCursor } );
        }
    }
}

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