所有的js
var Library = {};
Library.ease = function () {
this.target = 0;
this.position = 0;
this.move = function (target, speed) {
this.position += (target - this.position) * speed;
}
}
var tv = {
/* ==== variables ==== */
O: [],
screen: {},
grid: {
size: 4, // 4x4 grid
borderSize: 6, // borders size
zoomed: false
},
angle: {
x: new Library.ease(),
y: new Library.ease()
},
camera: {
x: new Library.ease(),
y: new Library.ease(),
zoom: new Library.ease(),
focalLength: 750 // camera Focal Length
},
/* ==== init script ==== */
init: function () {
this.screen.obj = document.getElementById('screen');
var img = document.getElementById('bankImages').getElementsByTagName('img');
this.screen.obj.onselectstart = function () { return false; }
this.screen.obj.ondrag = function () { return false; }
/* ==== images grid ==== */
var ni = 0;
var n = (tv.grid.size / 2) - .5;
for (var y = -n; y <= n; y++) {
for (var x = -n; x <= n; x++) {
/* ==== HTML image element ==== */
var o = document.Element('img');
var i = img[(ni++) % img.length];
o.className = 'tvout';
o.src = i.src;
tv.screen.obj.appendChild(o);
/* ==== 3D coordinates ==== */
o.point3D = {
x: x,
y: y,
z: new Library.ease()
};
/* ==== push object ==== */
o.point2D = {};
o.ratioImage = 1;
tv.O.push(o);
/* ==== on mouse over event ==== */
o.onmouseover = function () {
if (!tv.grid.zoomed) {
if (tv.o) {
/* ==== mouse out ==== */
tv.o.point3D.z.target = 0;
tv.o.className = 'tvout';
}
/* ==== mouse over ==== */
this.className = 'tvover';
this.point3D.z.target = -.5;
tv.o = this;
}
}
/* ==== on click event ==== */
o.onclick = function () {
if (!tv.grid.zoomed) {
/* ==== zoom in ==== */
tv.camera.x.target = this.point3D.x;
tv.camera.y.target = this.point3D.y;
tv.camera.zoom.target = tv.screen.w * 1.25;
tv.grid.zoomed = this;
} else {
if (this == tv.grid.zoomed) {
/* ==== zoom out ==== */
tv.camera.x.target = 0;
tv.camera.y.target = 0;
tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);
tv.grid.zoomed = false;
}
}
}
/* ==== 3D transform function ==== */
o.calc = function () {
/* ==== ease mouseover ==== */
this.point3D.z.move(this.point3D.z.target, .5);
/* ==== assign 3D coords ==== */
var x = (this.point3D.x - tv.camera.x.position) * tv.camera.zoom.position;
var y = (this.point3D.y - tv.camera.y.position) * tv.camera.zoom.position;
var z = this.point3D.z.position * tv.camera.zoom.position;
/* ==== perform rotations ==== */
var xy = tv.angle.cx * y - tv.angle.sx * z;
var xz = tv.angle.sx * y + tv.angle.cx * z;
var yz = tv.angle.cy * xz - tv.angle.sy * x;
var yx = tv.angle.sy * xz + tv.angle.cy * x;
/* ==== 2D transformation ==== */
this.point2D.scale = tv.camera.focalLength / (tv.camera.focalLength + yz);
this.point2D.x = yx * this.point2D.scale;
this.point2D.y = xy * this.point2D.scale;
this.point2D.w = Math.round(
Math.max(
0,
this.point2D.scale * tv.camera.zoom.position * .8
)
);
/* ==== image size ratio ==== */
if (this.ratioImage > 1)
this.point2D.h = Math.round(this.point2D.w / this.ratioImage);
else {
this.point2D.h = this.point2D.w;
this.point2D.w = Math.round(this.point2D.h * this.ratioImage);
}
}
/* ==== rendering ==== */
o.draw = function () {
if (this.complete) {
/* ==== paranoid image load ==== */
if (!this.loaded) {
if (!this.img) {
/* ==== internal image ==== */
this.img = new Image();
this.img.src = this.src;
}
if (this.img.complete) {
/* ==== get width / height ratio ==== */
this.style.visibility = 'visible';
this.ratioImage = this.img.width / this.img.height;
this.loaded = true;
this.img = false;
}
}
/* ==== HTML rendering ==== */
this.style.left = Math.round(
this.point2D.x * this.point2D.scale +
tv.screen.w - this.point2D.w * .5
) + 'px';
this.style.top = Math.round(
this.point2D.y * this.point2D.scale +
tv.screen.h - this.point2D.h * .5
) + 'px';
this.style.width = this.point2D.w + 'px';
this.style.height = this.point2D.h + 'px';
this.style.borderWidth = Math.round(
Math.max(
this.point2D.w,
this.point2D.h
) * tv.grid.borderSize * .01
) + 'px';
this.style.zIndex = Math.floor(this.point2D.scale * 100);
}
}
}
}
/* ==== start script ==== */
tv.resize();
mouse.y = tv.screen.y + tv.screen.h;
mouse.x = tv.screen.x + tv.screen.w;
tv.run();
},
/* ==== resize window ==== */
resize: function () {
var o = tv.screen.obj;
tv.screen.w = o.offsetWidth / 2;
tv.screen.h = o.offsetHeight / 2;
tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);
for (tv.screen.x = 0, tv.screen.y = 0; o != null; o = o.offsetParent) {
tv.screen.x += o.offsetLeft;
tv.screen.y += o.offsetTop;
}
},
/* ==== main loop ==== */
run: function () {
/* ==== motion ease ==== */
tv.angle.x.move(-(mouse.y - tv.screen.h - tv.screen.y) * .0025, .1);
tv.angle.y.move((mouse.x - tv.screen.w - tv.screen.x) * .0025, .1);
tv.camera.x.move(tv.camera.x.target, tv.grid.zoomed ? .25 : .025);
tv.camera.y.move(tv.camera.y.target, tv.grid.zoomed ? .25 : .025);
tv.camera.zoom.move(tv.camera.zoom.target, .05);
/* ==== angles sin and cos ==== */
tv.angle.cx = Math.cos(tv.angle.x.position);
tv.angle.sx = Math.sin(tv.angle.x.position);
tv.angle.cy = Math.cos(tv.angle.y.position);
tv.angle.sy = Math.sin(tv.angle.y.position);
/* ==== loop through all images ==== */
for (var i = 0, o; o = tv.O[i]; i++) {
o.calc();
o.draw();
}
/* ==== loop ==== */
setTimeout(tv.run, 32);
}
}
