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html3D创意相册附源码

2024-05-27 10:05:50 前端知识 前端哥 766 458 我要收藏

(function () {

/* ==== definitions ==== */

var diapo = [], layers = [], ctx, pointer, scr, camera, light, fps = 0, quality = [1,2],

// ---- poly constructor ----

Poly = function (parent, face) {

this.parent = parent;

this.ctx = ctx;

this.color = face.fill || false;

this.points = [];

if (!face.img) {

// ---- create points ----

for (var i = 0; i < 4; i++) {

this.points[i] = new ge1doot.transform3D.Point(

parent.pc.x + (face.x[i] * parent.normalZ) + (face.z[i] * parent.normalX),

parent.pc.y + face.y[i],

parent.pc.z + (face.x[i] * parent.normalX) + (-face.z[i] * parent.normalZ)

);

}

this.points[3].next = false;

}

},

// ---- diapo constructor ----

Diapo = function (path, img, structure) {

// ---- create image ----

this.img = new ge1doot.transform3D.Image(

this, path + img.img, 1, {

isLoaded: function(img) {

img.parent.isLoaded = true;

img.parent.loaded(img);

}

}

);

this.visible = false;

this.normalX = img.nx;

this.normalZ = img.nz;

// ---- point center ----

this.pc = new ge1doot.transform3D.Point(img.x, img.y, img.z);

// ---- target positions ----

this.tx = img.x + (img.nx * Math.sqrt(camera.focalLength) * 20);

this.tz = img.z - (img.nz * Math.sqrt(camera.focalLength) * 20);

// ---- create polygons ----

this.poly = [];

for (var i = -1, p; p = structure[++i]😉 {

layers[i] = (p.img === true ? 1 : 2);

this.poly.push(

new Poly(this, p)

);

}

},

// ---- init section ----

init = function (json) {

// draw poly primitive

Poly.prototype.drawPoly = ge1doot.transform3D.drawPoly;

// ---- init screen ----

scr = new ge1doot.Screen({

container: “canvas”

});

ctx = scr.ctx;

scr.resize();

// ---- init pointer ----

pointer = new ge1doot.Pointer({

tap: function () {

if (camera.over) {

if (camera.over === camera.target.elem) {

// ---- return to the center ----

camera.target.x = 0;

camera.target.z = 0;

camera.target.elem = false;

} else {

// ---- goto diapo ----

camera.target.elem = camera.over;

camera.target.x = camera.over.tx;

camera.target.z = camera.over.tz;

// ---- adapt tesselation level to distance ----

for (var i = 0, d; d = diapo[i++]😉 {

var dx = camera.target.x - d.pc.x;

var dz = camera.target.z - d.pc.z;

var dist = Math.sqrt(dx * dx + dz * dz);

var lev = (dist > 1500) ? quality[0] : quality[1];

d.img.setLevel(lev);

}

}

}

}

});

// ---- init camera ----

camera = new ge1doot.transform3D.Camera({

focalLength: Math.sqrt(scr.width) * 10,

easeTranslation: 0.025,

easeRotation: 0.06,

disableRz: true

}, {

move: function () {

this.over = false;

// ---- rotation ----

if (pointer.isDraging) {

this.target.elem = false;

this.target.ry = -pointer.Xi * 0.01;

this.target.rx = (pointer.Y - scr.height * 0.5) / (scr.height * 0.5);

} else {

if (this.target.elem) {

this.target.ry = Math.atan2(

this.target.elem.pc.x - this.x,

this.target.elem.pc.z - this.z

);

}

}

this.target.rx *= 0.9;

}

});

camera.z = -10000;

camera.py = 0;

// ---- create images ----

for (var i = 0, img; img = json.imgdata[i++]😉 {

diapo.push(

new Diapo(

json.options.imagesPath,

img,

json.structure

)

);

}

// ---- start engine ---- >>>

setInterval(function() {

quality = (fps > 50) ? [2,3] : [1,2];

fps = 0;

}, 1000);

run();

},

// ---- main loop ----

run = function () {

// ---- clear screen ----

ctx.clearRect(0, 0, scr.width, scr.height);

// ---- camera ----

camera.move();

// ---- draw layers ----

for (var k = -1, l; l = layers[++k]😉 {

light = false;

for (var i = 0, d; d = diapo[i++]😉 {

(l === 1 && d.draw()) ||

(d.visible && d.poly[k].draw());

}

}

// ---- cursor ----

if (camera.over && !pointer.isDraging) {

scr.setCursor(“pointer”);

} else {

scr.setCursor(“move”);

}

// ---- loop ----

fps++;

requestAnimFrame(run);

};

/* ==== prototypes ==== */

Poly.prototype.draw = function () {

// ---- color light ----

var c = this.color;

if (c.light || !light) {

var s = c.light ? this.parent.light : 1;

// ---- rgba color ----

light = “rgba(” +

Math.round(c.r * s) + “,” +

Math.round(c.g * s) + “,” +

Math.round(c.b * s) + “,” + (c.a || 1) + “)”;

ctx.fillStyle = light;

}

// ---- paint poly ----

if (!c.light || this.parent.light < 1) {

// ---- projection ----

for (

var i = 0;

this.points[i++].projection();

);

this.drawPoly();

ctx.fill();

}

}

/* ==== image onload ==== */

Diapo.prototype.loaded = function (img) {

// ---- create points ----

var d = [-1,1,1,-1,1,1,-1,-1];

var w = img.texture.width * 0.5;

var h = img.texture.height * 0.5;

for (var i = 0; i < 4; i++) {

img.points[i] = new ge1doot.transform3D.Point(

this.pc.x + (w * this.normalZ * d[i]),

this.pc.y + (h * d[i + 4]),

this.pc.z + (w * this.normalX * d[i])

);

}

}

/* ==== images draw ==== */

Diapo.prototype.draw = function () {

// ---- visibility ----

this.pc.projection();

if (this.pc.Z > -(camera.focalLength >> 1) && this.img.transform3D(true)) {

// ---- light ----

this.light = 0.5 + Math.abs(this.normalZ * camera.cosY - this.normalX * camera.sinY) * 0.6;

// ---- draw image ----

this.visible = true;

this.img.draw();

// ---- test pointer inside ----

if (pointer.hasMoved || pointer.isDown) {

if (

this.img.isPointerInside(

pointer.X,

pointer.Y

)

) camera.over = this;

}

} else this.visible = false;

return true;

}

return {

// — load data ----

load : function (data) {

window.addEventListener(‘load’, function () {

ge1doot.loadJS(

“js/imageTransform3D.js”,

init, data

);

}, false);

}

}

})().load({

imgdata:[

// north

{img:‘imgs/1.jpg’, x:-1000, y:0, z:1500, nx:0, nz:1},

{img:‘imgs/2.jpg’, x:0, y:0, z:1500, nx:0, nz:1},

{img:‘imgs/3.jpg’, x:1000, y:0, z:1500, nx:0, nz:1},

// east

{img:‘imgs/4.jpg’, x:1500, y:0, z:1000, nx:-1, nz:0},

{img:‘imgs/5.jpg’, x:1500, y:0, z:0, nx:-1, nz:0},

{img:‘imgs/6.jpg’, x:1500, y:0, z:-1000, nx:-1, nz:0},

// south

{img:‘imgs/7.jpg’, x:1000, y:0, z:-1500, nx:0, nz:-1},

{img:‘imgs/8.jpg’, x:0, y:0, z:-1500, nx:0, nz:-1},

{img:‘imgs/9.jpg’, x:-1000, y:0, z:-1500, nx:0, nz:-1},

// west

{img:‘imgs/10.jpg’, x:-1500, y:0, z:-1000, nx:1, nz:0},

{img:‘imgs/11.jpg’, x:-1500, y:0, z:0, nx:1, nz:0},

{img:‘imgs/12.jpg’, x:-1500, y:0, z:1000, nx:1, nz:0}

],

structure:[

{

// wall

fill: {r:255, g:255, b:255, light:1},

x: [-1001,-490,-490,-1001],

z: [-500,-500,-500,-500],

y: [500,500,-500,-500]

},{

// wall

fill: {r:255, g:255, b:255, light:1},

x: [-501,2,2,-500],

z: [-500,-500,-500,-500],

y: [500,500,-500,-500]

},{

// wall

fill: {r:255, g:255, b:255, light:1},

x: [0,502,502,0],

z: [-500,-500,-500,-500],

y: [500,500,-500,-500]

},{

// wall

fill: {r:255, g:255, b:255, light:1},

x: [490,1002,1002,490],

z: [-500,-500,-500,-500],

y: [500,500,-500,-500]

},{

// shadow

fill: {r:0, g:0, b:0, a:0.2},

x: [-420,420,420,-420],

z: [-500,-500,-500,-500],

y: [150, 150,-320,-320]

},{

// shadow

fill: {r:0, g:0, b:0, a:0.2},

x: [-20,20,20,-20],

z: [-500,-500,-500,-500],

y: [250, 250,150,150]

},{

// shadow

fill: {r:0, g:0, b:0, a:0.2},

x: [-20,20,20,-20],

z: [-500,-500,-500,-500],

y: [-320, -320,-500,-500]

},{

// shadow

fill: {r:0, g:0, b:0, a:0.2},

x: [-20,20,10,-10],

z: [-500,-500,-100,-100],

y: [-500, -500,-500,-500]

},{

// base

fill: {r:32, g:32, b:32},

x: [-50,50,50,-50],

z: [-150,-150,-50,-50],

y: [-500,-500,-500,-500]

},{

// support

fill: {r:16, g:16, b:16},

x: [-10,10,10,-10],

z: [-100,-100,-100,-100],

y: [300,300,-500,-500]

},{

// frame

fill: {r:255, g:255, b:255},

x: [-320,-320,-320,-320],

z: [0,-20,-20,0],

y: [-190,-190,190,190]

},{

// frame

fill: {r:255, g:255, b:255},

x: [320,320,320,320],

z: [0,-20,-20,0],

y: [-190,-190,190,190]

},

{img:true},

{

// ceilingLight

fill: {r:255, g:128, b:0},

x: [-50,50,50,-50],

z: [450,450,550,550],

y: [500,500,500,500]

},{

// groundLight

fill: {r:255, g:128, b:0},

x: [-50,50,50,-50],

z: [450,450,550,550],

y: [-500,-500,-500,-500]

}

],

options:{

imagesPath: “”

}

});

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js文件目录:

在这里插入图片描述

ge1doot.js

var ge1doot = ge1doot || {

json: null,

screen: null,

pointer: null,

camera: null,

loadJS: function (url, callback, data) {

if (typeof url == “string”) url = [url];

var load = function (src) {

var script = document.createElement(“script”);

if (callback) {

if (script.readyState){

script.onreadystatechange = function () {

if (script.readyState == “loaded” || script.readyState == “complete”){

script.onreadystatechange = null;

if (–n === 0) callback(data || false);

}

}

} else {

script.onload = function() {

if (–n === 0) callback(data || false);

}

}

}

script.src = src;

document.getElementsByTagName(“head”)[0].appendChild(script);

}

for (var i = 0, n = url.length; i < n; i++) load(url[i]);

}

}

// ===== html/canvas container =====

ge1doot.Screen = function (setup) {

ge1doot.screen = this;

this.elem = document.getElementById(setup.container) || setup.container;

this.ctx = this.elem.tagName == “CANVAS” ? this.elem.getContext(“2d”) : false;

this.style = this.elem.style;

this.left = 0;

this.top = 0;

this.width = 0;

this.height = 0;

this.cursor = “default”;

this.setup = setup;

this.resize = function () {

var o = this.elem;

this.width = o.offsetWidth;

this.height = o.offsetHeight;

for (this.left = 0, this.top = 0; o != null; o = o.offsetParent) {

this.left += o.offsetLeft;

this.top += o.offsetTop;

}

if (this.ctx) {

this.elem.width = this.width;

this.elem.height = this.height;

}

this.setup.resize && this.setup.resize();

}

this.setCursor = function (type) {

if (type !== this.cursor && ‘ontouchstart’ in window === false) {

this.cursor = type;

this.style.cursor = type;

}

}

window.addEventListener(‘resize’, function () {

ge1doot.screen.resize();

}, false);

!this.setup.resize && this.resize();

}

// ==== unified touch events handler ====

ge1doot.Pointer = function (setup) {

ge1doot.pointer = this;

var self = this;

var body = document.body;

var html = document.documentElement;

this.setup = setup;

this.screen = ge1doot.screen;

this.elem = this.screen.elem;

this.X = 0;

this.Y = 0;

this.Xi = 0;

this.Yi = 0;

this.bXi = 0;

this.bYi = 0;

this.Xr = 0;

this.Yr = 0;

this.startX = 0;

this.startY = 0;

this.scale = 0;

this.wheelDelta = 0;

this.isDraging = false;

this.hasMoved = false;

this.isDown = false;

this.evt = false;

var sX = 0;

var sY = 0;

// prevent default behavior

if (setup.tap) this.elem.onclick = function () { return false; }

if (!setup.documentMove) {

document.ontouchmove = function(e) { e.preventDefault(); }

}

document.addEventListener(“MSHoldVisual”, function(e) { e.preventDefault(); }, false);

if (typeof this.elem.style.msTouchAction != ‘undefined’) this.elem.style.msTouchAction = “none”;

this.pointerDown = function (e) {

if (!this.isDown) {

if (this.elem.setCapture) this.elem.setCapture();

this.isDraging = false;

this.hasMoved = false;

this.isDown = true;

this.evt = e;

this.Xr = (e.clientX !== undefined ? e.clientX : e.touches[0].clientX);

this.Yr = (e.clientY !== undefined ? e.clientY : e.touches[0].clientY);

this.X = sX = this.Xr - this.screen.left;

this.Y = sY = this.Yr - this.screen.top + ((html && html.scrollTop) || body.scrollTop);

this.setup.down && this.setup.down(e);

}

}

this.pointerMove = function(e) {

this.Xr = (e.clientX !== undefined ? e.clientX : e.touches[0].clientX);

this.Yr = (e.clientY !== undefined ? e.clientY : e.touches[0].clientY);

this.X = this.Xr - this.screen.left;

this.Y = this.Yr - this.screen.top + ((html && html.scrollTop) || body.scrollTop);

if (this.isDown) {

this.Xi = this.bXi + (this.X - sX);

this.Yi = this.bYi - (this.Y - sY);

}

if (Math.abs(this.X - sX) > 11 || Math.abs(this.Y - sY) > 11) {

this.hasMoved = true;

if (this.isDown) {

if (!this.isDraging) {

this.startX = sX;

this.startY = sY;

this.setup.startDrag && this.setup.startDrag(e);

this.isDraging = true;

} else {

this.setup.drag && this.setup.drag(e);

}

} else {

sX = this.X;

sY = this.Y;

}

}

this.setup.move && this.setup.move(e);

}

this.pointerUp = function(e) {

this.bXi = this.Xi;

this.bYi = this.Yi;

if (!this.hasMoved) {

this.X = sX;

this.Y = sY;

this.setup.tap && this.setup.tap(this.evt);

} else {

this.setup.up && this.setup.up(this.evt);

}

this.isDraging = false;

this.isDown = false;

this.hasMoved = false;

this.setup.up && this.setup.up(this.evt);

if (this.elem.releaseCapture) this.elem.releaseCapture();

this.evt = false;

}

this.pointerCancel = function(e) {

if (this.elem.releaseCapture) this.elem.releaseCapture();

this.isDraging = false;

this.hasMoved = false;

this.isDown = false;

this.bXi = this.Xi;

this.bYi = this.Yi;

sX = 0;

sY = 0;

}

if (‘ontouchstart’ in window) {

this.elem.ontouchstart = function (e) { self.pointerDown(e); return false; }

this.elem.ontouchmove = function (e) { self.pointerMove(e); return false; }

this.elem.ontouchend = function (e) { self.pointerUp(e); return false; }

this.elem.ontouchcancel = function (e) { self.pointerCancel(e); return false;}

}

document.addEventListener(“mousedown”, function (e) {

if (

e.target === self.elem ||

(e.target.parentNode && e.target.parentNode === self.elem) ||

(e.target.parentNode.parentNode && e.target.parentNode.parentNode === self.elem)

) {

if (typeof e.stopPropagation != “undefined”) {

e.stopPropagation();

} else {

e.cancelBubble = true;

}

e.preventDefault();

self.pointerDown(e);

}

}, false);

document.addEventListener(“mousemove”, function (e) { self.pointerMove(e); }, false);

document.addEventListener(“mouseup”, function (e) {

self.pointerUp(e);

}, false);

document.addEventListener(‘gesturechange’, function(e) {

e.preventDefault();

if (e.scale > 1) self.scale = 0.1; else if (e.scale < 1) self.scale = -0.1; else self.scale = 0;

self.setup.scale && self.setup.scale(e);

return false;

}, false);

if (window.navigator.msPointerEnabled) {

var nContact = 0;

var myGesture = new MSGesture();

myGesture.target = this.elem;

this.elem.addEventListener(“MSPointerDown”, function(e) {

if (e.pointerType == e.MSPOINTER_TYPE_TOUCH) {

myGesture.addPointer(e.pointerId);

nContact++;

}

}, false);

this.elem.addEventListener(“MSPointerOut”, function(e) {

if (e.pointerType == e.MSPOINTER_TYPE_TOUCH) {

nContact–;

}

}, false);

this.elem.addEventListener(“MSGestureHold”, function(e) {

e.preventDefault();

}, false);

this.elem.addEventListener(“MSGestureChange”, function(e) {

if (nContact > 1) {

if (e.preventDefault) e.preventDefault();

self.scale = e.velocityExpansion;

self.setup.scale && self.setup.scale(e);

}

return false;

}, false);

}

if (window.addEventListener) this.elem.addEventListener(‘DOMMouseScroll’, function(e) {

if (e.preventDefault) e.preventDefault();

self.wheelDelta = e.detail * 10;

self.setup.wheel && self.setup.wheel(e);

return false;

}, false);

this.elem.onmousewheel = function () {

self.wheelDelta = -event.wheelDelta * .25;

self.setup.wheel && self.setup.wheel(event);

return false;

}

}

// ===== request animation frame =====

window.requestAnimFrame = (function(){

return window.requestAnimationFrame ||

window.webkitRequestAnimationFrame ||

window.mozRequestAnimationFrame ||

window.oRequestAnimationFrame ||

window.msRequestAnimationFrame ||

function( run ){

window.setTimeout(run, 16);

};

})();

imageTransform3D.js

“use strict”;

var ge1doot = ge1doot || {};

ge1doot.transform3D = {};

/* ==== draw Poly ==== */

ge1doot.transform3D.drawPoly = function () {

this.ctx.beginPath();

this.ctx.moveTo(this.points[0].X, this.points[0].Y);

this.ctx.lineTo(this.points[1].X, this.points[1].Y);

this.ctx.lineTo(this.points[2].X, this.points[2].Y);

this.ctx.lineTo(this.points[3].X, this.points[3].Y);

this.ctx.closePath();

}

/* =============== camera constructor ================= */

ge1doot.transform3D.Camera = function (setup, func) {

ge1doot.camera = this;

this.x = 0;

this.y = 0;

this.z = 0;

this.rx = 0;

this.ry = 0;

this.rz = 0;

this.focalLength = setup.focalLength || 500;

this.easeTranslation = setup.easeTranslation || 0.1;

this.easeRotation = setup.easeRotation || 0.025;

this.enableRx = setup.disableRx ? false : true;

this.enableRy = setup.disableRy ? false : true;

this.enableRz = setup.disableRz ? false : true;

this.cmov = false;

this.cosX = 1;

this.sinX = 0;

this.cosY = 1;

this.sinY = 0;

this.cosZ = 1;

this.sinZ = 0;

this.target = {

over: false,

elem: false,

x: 0,

y: 0,

z: 0,

rx: 0,

ry: 0,

rz: 0

最后

以前一直是自己在网上东平西凑的找,找到的东西也是零零散散,很多时候都是看着看着就没了,时间浪费了,问题却还没得到解决,很让人抓狂。

后面我就自己整理了一套资料,还别说,真香!

资料有条理,有系统,还很全面,我不方便直接放出来,大家可以先看看有没有用得到的地方吧。

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s.ctx.closePath();

}

/* =============== camera constructor ================= */

ge1doot.transform3D.Camera = function (setup, func) {

ge1doot.camera = this;

this.x = 0;

this.y = 0;

this.z = 0;

this.rx = 0;

this.ry = 0;

this.rz = 0;

this.focalLength = setup.focalLength || 500;

this.easeTranslation = setup.easeTranslation || 0.1;

this.easeRotation = setup.easeRotation || 0.025;

this.enableRx = setup.disableRx ? false : true;

this.enableRy = setup.disableRy ? false : true;

this.enableRz = setup.disableRz ? false : true;

this.cmov = false;

this.cosX = 1;

this.sinX = 0;

this.cosY = 1;

this.sinY = 0;

this.cosZ = 1;

this.sinZ = 0;

this.target = {

over: false,

elem: false,

x: 0,

y: 0,

z: 0,

rx: 0,

ry: 0,

rz: 0

最后

以前一直是自己在网上东平西凑的找,找到的东西也是零零散散,很多时候都是看着看着就没了,时间浪费了,问题却还没得到解决,很让人抓狂。

后面我就自己整理了一套资料,还别说,真香!

资料有条理,有系统,还很全面,我不方便直接放出来,大家可以先看看有没有用得到的地方吧。

[外链图片转存中…(img-RrkdlKwe-1714974462386)]

[外链图片转存中…(img-1a0eCQTO-1714974462387)]

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[外链图片转存中…(img-xqwELT7o-1714974462389)]

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