Pixels

forked:23
favorite:130
lines:161
license : MIT License
modified : 2010-07-17 02:38:54

package {
    import frocessing.color.ColorHSV;

import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageQuality;
    import flash.display.StageScaleMode;
    import flash.events.MouseEvent;
    import flash.geom.PerspectiveProjection;
    import flash.utils.getTimer;

[SWF(backgroundColor="#000000", frameRate="60", width="475", height="475")]
    
    
    public class Pixels extends Sprite {

private var _canvas:Canvas;

private var _color:ColorHSV;
        private var _px:int;
        private var _py:int;

public function Pixels() {
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;
            stage.quality = StageQuality.LOW;
            
            var pp:PerspectiveProjection = root.transform.perspectiveProjection;
            pp.focalLength = 2000;
            root.transform.perspectiveProjection = pp;
            
            _canvas = addChild(new Canvas()) as Canvas;
            _color = new ColorHSV();
            _px = _py = -1;

addEventListener(MouseEvent.MOUSE_DOWN, _onMouseDown);
            addEventListener(MouseEvent.MOUSE_UP, _onMouseUp);
        }

private function _onMouseDown(event:MouseEvent):void {
            addEventListener(MouseEvent.MOUSE_MOVE, _onMouseMove);
            _draw();
        }
    
        
        private function _onMouseMove(event:MouseEvent):void {
            _draw();
        }
    
        
        private function _onMouseUp(event:MouseEvent):void {
            removeEventListener(MouseEvent.MOUSE_MOVE, _onMouseMove);
            _px = _py = -1;
        }
        
        
        private function _draw():void {
            _color.h = getTimer() / 50 + Math.random() * 30;
            var cx:int = mouseX / 5;
            var cy:int = mouseY / 5;
            if (_px >= 0) _canvas.drawLine(_px, _py, cx, cy, _color.value);
            _px = cx;
            _py = cy;
        }
    }
}

import org.libspark.betweenas3.BetweenAS3;
import org.libspark.betweenas3.easing.Circ;
import org.libspark.betweenas3.tweens.ITween;

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.PixelSnapping;
import flash.display.Shape;
import flash.display.Sprite;

class Canvas extends Sprite {

private var _image:Bitmap;
    private var _grid:Bitmap;
    
    private var _px:int;
    private var _py:int;

public function Canvas() {
        mouseChildren = false;
        
        var b:BitmapData = new BitmapData(95 + 1, 95, false, 0x0);
        _image = addChild(new Bitmap(b, PixelSnapping.ALWAYS, false)) as Bitmap;
        _image.scaleX = _image.scaleY = 5;
        
        var s:Shape = new Shape();
        s.graphics.beginFill(0x101010);
        s.graphics.drawRect(4, 0, 1, 5);
        s.graphics.drawRect(0, 4, 4, 1);
        s.graphics.endFill();
        var p:BitmapData = new BitmapData(5, 5, true, 0x0);
        p.draw(s);
        s.graphics.clear();
        s.graphics.beginBitmapFill(p);
        s.graphics.drawRect(0, 0, 475 + 5, 475);
        s.graphics.endFill();
        
        b = new BitmapData(475 + 5, 475, true, 0x0);
        b.draw(s);
        _grid = addChild(new Bitmap(b, PixelSnapping.ALWAYS, false)) as Bitmap;
        
        _px = _py = -1;
    }

public function drawLine(x0:int, y0:int, x1:int, y1:int, color:int):void {
        var steep:Boolean = Math.abs(y1 - y0) > Math.abs(x1 - x0);
        var tmp:int;
        if (steep) {
            tmp = x0;
            x0 = y0;
            y0 = tmp;
            tmp = x1;
            x1 = y1;
            y1 = tmp;
        }
        if (x0 > x1) {
            tmp = x0;
            x0 = x1;
            x1 = tmp;
            tmp = y0;
            y0 = y1;
            y1 = tmp;
        }
        var deltax:int = x1 - x0;
        var deltay:int = Math.abs(y1 - y0);
        var error:int = deltax / 2;
        var ystep:int;
        var y:int = y0;
        if (y0 < y1) {
            ystep = 1;
        } else {
            ystep = -1;
        }
        for (var x:int = x0; x <= x1; x++) {
            if (steep) {
                setPixel(y, x, color);
            } else {
                setPixel(x, y, color);
            }
            error = error - deltay;
            if (error < 0) {
                y = y + ystep;
                error = error + deltax;
            }
        }
    }

public function setPixel(x:int, y:int, color:uint):void {
        if (x == _px && y == _py) return;
        _px = x;
        _py = y;
        
        _image.bitmapData.setPixel32(x, y, 0x333333);
        var s:Shape = new Shape();
        s.graphics.beginFill(color);
        s.graphics.drawRect(-2, -2, 3, 3);
        s.graphics.endFill();
        s.x = x * 5 + 2 + Math.random() * 200 - 100;
        s.y = y * 5 + 2 + Math.random() * 200 - 100;
        s.z = -2000;
        s.rotationX = Math.random() * 360 - 180;
        s.rotationY = Math.random() * 360 - 180;
        s.rotationZ = Math.random() * 360 - 180;
        s.scaleX = s.scaleY = 10;
        s.alpha = 0;
        addChild(s);
        var t:ITween = BetweenAS3.to(s, {
            x: x * 5 + 2,
            y: y * 5 + 2,
            z: 0,
            rotationX: 0,
            rotationY: 0,
            rotationZ: 0,
            scaleX: 1,
            scaleY: 1,
            alpha: 1.0
        }, 1.0, Circ.easeOut);
        t.onComplete = function ():void {
            s.parent.removeChild(s);
            _image.bitmapData.setPixel32(x, y, color);
        };
        t.play();
    }
}

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