SWF e-book.as

margin = 20;

// bg defines the hitArea which raises mouse events // - this is used so that the book symbol doesn't need to have a filled background createEmptyMovieClip("bg",1); bg._visible = false; bg.beginFill(0,100); bg.moveTo(margin,margin); bg.lineTo(width-margin,margin); bg.lineTo(width-margin,height-margin); bg.lineTo(margin,height-margin); bg.lineTo(margin,margin); bg.endFill();

// This initialises the book page lines createEmptyMovieClip("book",2); book.hitArea = bg;

// Draws page lines and folde line based on mouse position book.onMouseMove = function() {

w = (width-margin*2)/2; h = height-margin*2; ox = margin+w; oy = margin;

// Get mouse coords relative to book middle x = _xmouse-margin-width/2; y = _ymouse-margin;

// constrain mouse to radius W a = Math.atan2(y,x); r = Math.sqrt(x*x+y*y); if (r>w) r=w; x = Math.cos(a)*r; y = Math.sin(a)*r;

// Calculate point Z and dy,dx of line C dx = w-x; dy = y; Zx = x+dx/2; Zy = y-dy/2;

// Calculate line D Px = Zx-Zy*dy/dx; Qy = Zy+(w-Zx)*dx/dy;

clear(); lineStyle(3,0); moveTo(ox-w,oy); lineTo(ox+Px,oy); lineTo(ox+w,oy+Qy); lineTo(ox+w,oy+h); lineTo(ox-w,oy+h); lineTo(ox-w,oy); moveTo(ox,oy); lineTo(ox,oy+h);

moveTo(ox+Px,oy); lineTo(ox+x,oy+y); lineTo(ox+w,oy+Qy);

};