package { import flash.display.BlendMode; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.ColorMatrixFilter; public class Main extends Sprite { private var cursor_i:MyMask; private var cursor_r:MyMask; public function Main():void { addEventListener(Event.ADDED_TO_STAGE, init); } private function init (e:Event):void { removeEventListener(Event.ADDED_TO_STAGE, init); var water_:Sprite = new MyWater(stage, 100); water_.blendMode = BlendMode.SUBTRACT; water_.y = 200; cursor_i = new_cursor(water_, false); cursor_r = new_cursor(water_, true); addChild(cursor_i); addChild(water_); addChild(cursor_r); addEventListener(MouseEvent.MOUSE_MOVE, update); update(null); } private function update (e:Event):void { cursor_i.x = mouseX; const h_:int = 307; cursor_i.y = h_ + (mouseY - h_) * 0.4; cursor_i.refresh(); cursor_r.x = mouseX; cursor_r.y = mouseY; cursor_r.refresh(); } private function new_cursor (water_:Sprite, real_:Boolean):MyMask { var original_:Sprite = new MyTorus(100); original_.filters = [new ColorMatrixFilter([ 0, 0, 0.25, 0, 0xD0, 0, 0, 0, 0, 0x70, 0, 0, 0, 0, 0x70, 0, 0, 0, 1, 0 ])]; original_.cacheAsBitmap = true; var map_:Sprite = new MyTorus(100); map_.filters = [new ColorMatrixFilter([ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.1, 0, 0x10, 0, 0, 0, 1, 0 ])]; map_.cacheAsBitmap = true; if (! real_) map_.scaleY = 0.4; return new MyMask(original_.getBounds(original_), original_, map_, water_, real_); } } } import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.BitmapDataChannel; import flash.display.BlendMode; import flash.display.DisplayObject; import flash.display.GradientType; import flash.display.Graphics; import flash.display.Sprite; import flash.display.Stage; import flash.geom.Matrix; import flash.geom.Point; import flash.geom.Rectangle; class MyWater extends Sprite { public function MyWater(stage:Stage, height:int):void { var m_:Matrix = new Matrix; m_.createGradientBox(100, height, Math.PI * 0.5); var g_:Graphics = graphics; g_.beginGradientFill(GradientType.LINEAR, [0, 0xFF], null, null, m_); g_.drawRect(0, 0, stage.stageWidth, stage.stageHeight); g_.endFill(); } } class MyTorus extends Sprite { public function MyTorus(radius:int):void { var m_:Matrix = new Matrix; m_.createGradientBox(radius * 2, radius * 2, 0, -radius, -radius); var g_:Graphics = graphics; g_.beginGradientFill(GradientType.RADIAL, [1, 0x40, 0x80, 0xC0, 0xFF, 0xC0, 0x80, 0x40, 1], [0, 1, 1, 1, 1, 1, 1, 1, 1], [0x80, 0x84, 0x8F, 0xA0, 0xC0, 0xE0, 0xF0, 0xFC, 0xFF], m_); g_.drawCircle(0, 0, radius); g_.endFill(); } } class MyMask extends Sprite { private var rect_:Rectangle; private var original_:Sprite; private var map_:Sprite; private var water_:Sprite; private var work_:BitmapData; private var bd_:BitmapData; private var m_:Matrix = new Matrix; private var o_:Point = new Point; private var real_:Boolean; public function MyMask(rect:Rectangle, original:Sprite, map:Sprite, water:Sprite, real_arg:Boolean):void { rect_ = rect; m_.createBox(1, 1, 0, -rect_.left, -rect_.top); original_ = original; map_ = map; water_ = water; work_ = new BitmapData(rect_.width, rect_.height, false); bd_ = new BitmapData(rect_.width, rect_.height, true); var b_:Bitmap = new Bitmap(bd_); b_.x = rect_.left; b_.y = rect_.top; addChild(b_); real_ = real_arg; } public function refresh():void { var i_:Matrix = m_.clone(); if (!real_) i_.scale(1, map_.scaleY); var w_:Matrix = m_.clone(); w_.translate(water_.x - x, water_.y - y + (real_ ? 0 : -0)); work_.fillRect(work_.rect, 0); if (real_) { work_.draw(map_, i_); work_.draw(water_, w_, null, BlendMode.SUBTRACT); } else { work_.draw(water_, w_); work_.draw(map_, i_, null, BlendMode.SUBTRACT); } bd_.lock(); bd_.fillRect(bd_.rect, 0); bd_.draw(original_, i_); bd_.threshold(work_, work_.rect, o_, "<", 1, 0, 0xFF); bd_.unlock(); } }