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gallery.html
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gallery.html
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<html>
<title>Gallery</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, height=device-height, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
margin: 0 auto;
font-family: Arial, Helvetica, sans-serif;
color: #444;
overflow: hidden;
width: auto;
height: auto;
}
canvas {
border: 0;
width: 100%;
height: 100%;
display: block;
position: absolute;
}
.progress-bar {
height: 24px;
width: 30%;
border: 1px solid black;
padding: 2px;
margin: 0 auto;
top: 45%;
left: 35%;
z-index: 9;
position: absolute;
text-align: center;
line-height: 60px;
}
.progress-fill {
background-color: gray;
height: 100%;
}
</style>
<body>
<!--<div>temporary mobile console area:<div id="tmpConsole"></div>-->
<div class="progress-bar">
<div class="progress-fill" style="width: 50%;"></div>
loading...
</div>
<canvas id="canvas"></canvas>
<script id="vertex-shader-3d" type="x-shader/x-vertex">
uniform mat4 u_worldViewProjection;
attribute vec4 a_position;
attribute vec2 a_texcoord;
varying vec2 v_texCoord;
//varying float v_fogDepth;
void main() {
v_texCoord = a_texcoord;
gl_Position = u_worldViewProjection * a_position;
//v_fogDepth = -(u_worldViewProjection * a_position).z;
}
</script>
<script id="fragment-shader-3d" type="x-shader/x-fragment">
precision highp float;
varying vec2 v_texCoord;
uniform sampler2D u_diffuse;
uniform float u_opacity;
//uniform vec4 u_fogColor;
//uniform float u_fogAmount;
//varying float v_fogDepth;
void main() {
vec4 diffuseColor = texture2D(u_diffuse, v_texCoord);
gl_FragColor = vec4(diffuseColor.xyz, u_opacity);
//gl_FragColor = vec4(1.0, 0.8, 0.0, 1.0);
//float fogAmount = smoothstep(2.1, 20.0, v_fogDepth);
//gl_FragColor = mix(vec4(1.0, 0.8, 0.0, 1.0), vec4(0.0, 0.0, 1.0, 1.0), fogAmount);
}
</script>
<script id="frame-vertex-shader-3d" type="x-shader/x-vertex">
uniform mat4 u_worldViewProjection;
attribute vec4 a_position;
void main() {
gl_Position = u_worldViewProjection * a_position;
}
</script>
<script id="frame-fragment-shader-3d" type="x-shader/x-fragment">
precision highp float;
void main() {
gl_FragColor = vec4(.2, 0.0, 0.0, 1.);
}
</script>
<script src="./webgl-utils.js"></script>
<script src="https://webglfundamentals.org/webgl/resources/m4.js"></script>
<script>
"use strict";
function main() {
//const tmpConsole = document.getElementById("tmpConsole");
let isMouseDown = false;
const loader = document.getElementsByClassName("progress-bar")[0];
//互动区
const up = [0, 1, 0];
let aspect = window.innerWidth / window.innerHeight;
let id = -1, viewMatrix = [];
let cameraPosition = [0, 0, 265] /* -80*/, target = [0, 0, -1000];
//let cameraPosition=[-55*aspect,5*aspect,-130], target=[-50,0,-1000];
//let newCamPosStart = [0, 0, 10], newTargetPosStart=[100,0,-1000];
//类似打牌效果：
let newCamPosStart = [0, 0, 260], newTargetPosStart = [0, 0, -1000];
let camMov = [0, 0, 0], targetMov = [0, 0, 0];
let tweenCount = 20;
let isTweenReady = false, isTweening = false;
//gl初始化
var canvas = document.querySelector("#canvas");
var gl = canvas.getContext("webgl");
if (!gl) {
return;
}
//贴图区
const picNum = 38;
let loaded = 0;
let isLoaded = false;
let textures = [];
let objects = [];
function loadImage(url, callback) {
var image = new Image();
image.src = url;
image.onload = callback;
return image;
}
var images = [];
function loadImages(urls, callback) {
//var images = [];
var imagesToLoad = urls.length;
// Called each time an image finished
// loading.
var onImageLoad = function () {
--imagesToLoad;
// If all the images are loaded call the callback.
if (imagesToLoad === 0) {
callback(images);
loader.style.display = 'none';
}
};
for (var ii = 0; ii < imagesToLoad; ++ii) {
var image = loadImage(urls[ii], onImageLoad);
images.push(image);
}
}
gl.enable(gl.DEPTH_TEST);
const targetTexture = gl.createTexture();
/* 加入depth buffer（1/3） */
const depthBuffer = gl.createRenderbuffer();
const fb = gl.createFramebuffer();
const d = 0.1, picW = 5, picH = 8, frameW = 7, frameH = 10.5;
var arrays2 = {
position: {
numComponents: 3, data: [-frameW - d, frameH + d, 0, -frameW - d, frameH - d, 0, frameW - d, frameH - d, 0, frameW - d, frameH + d, 0,
-frameW - d, -frameH - d, 0, -frameW + d, -frameH - d, 0, -frameW + d, frameH - d, 0,
frameW + d, -frameH - d, 0, frameW + d, -frameH + d, 0, -frameW + d, -frameH + d, 0,
frameW - d, -frameH + d, 0, frameW + d, frameH + d, 0,
// -picW,-picH,0, picW,-picH,0, -picW,picH,0, picW,picH,0
],
},
texcoord: {
numComponents: 2, data: [0, 1, 1, 1, 0, 0, 1, 0,
0, 1, 1, 1, 0, 0, 1, 0,
0, 1, 1, 1, 0, 0, 1, 0,
0, 1, 1, 1, 0, 0, 1, 0,
// 0, 1, 1, 1, 0, 0, 1, 0
],
},
indices: {
numComponents: 3, data: [0, 1, 2, 0, 2, 3,
1, 4, 6, 4, 5, 6,
5, 7, 9, 7, 8, 9,
10, 8, 11, 11, 3, 10,
// 0+12, 1+12, 2+12, 1+12, 2+12, 3+12
],
},
};
var arrays = {
position: { numComponents: 3, data: [-picW, -picH, 0, picW, -picH, 0, -picW, picH, 0, picW, picH, 0], },
texcoord: { numComponents: 2, data: [0, 1, 1, 1, 0, 0, 1, 0], },
indices: { numComponents: 3, data: [0, 1, 2, 1, 2, 3], },
};
var bufferInfo = webglUtils.createBufferInfoFromArrays(gl, arrays);
var bufferInfo2 = webglUtils.createBufferInfoFromArrays(gl, arrays2);
var programInfo = webglUtils.createProgramInfo(gl, ["vertex-shader-3d", "fragment-shader-3d"]);
var frameProgramInfo = webglUtils.createProgramInfo(gl, ["frame-vertex-shader-3d", "frame-fragment-shader-3d"]);
function degToRad(d) {
return d * Math.PI / 180;
}
var fieldOfViewRadians = degToRad(60);
var uniformsThatAreComputedForEachObject = {
u_worldViewProjection: m4.identity(),
};
var pickUniforms = {
u_worldViewProjection: m4.identity(),
};
//fog区
//var fogColorLocation = gl.getUniformLocation(programInfo.program, "u_fogColor");
//var fogAmountLocation = gl.getUniformLocation(programInfo.program, "u_fogAmount");
var opacityLocation = gl.getUniformLocation(programInfo.program, "u_opacity");
function drawScene() {
resizeCanvasToDisplaySize(canvas);
aspect = gl.canvas.clientWidth / gl.canvas.clientHeight;
//需要一个viewMatrix
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
// Tell WebGL how to convert from clip space to pixels
gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
//gl.clearColor(1.0,1.0,1.0,1.0);
// Clear the canvas AND the depth buffer.
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
var projectionMatrix = m4.perspective(fieldOfViewRadians, aspect, 1, 2000);
var viewProjectionMatrix = m4.multiply(projectionMatrix, viewMatrix);
gl.useProgram(programInfo.program);
// Setup all the needed buffers and attributes.
webglUtils.setBuffersAndAttributes(gl, programInfo, bufferInfo);
//webglUtils.setBuffersAndAttributes(gl, programInfo, bufferInfo2);
gl.enable(gl.BLEND);
//gl.blendFunc(gl.SRC_COLOR, gl.DST_COLOR);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
//gl.blendFunc(gl.ONE, gl.DST_COLOR);
//gl.blendFunc(gl.SRC_ALPHA, gl.DST_ALPHA);
//gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
objects.forEach(function (object) {
var worldMatrix = m4.xRotation(0);
worldMatrix = m4.translate(worldMatrix, -object.xTranslation, object.yTranslation, object.zTranslation);
worldMatrix = m4.yRotate(worldMatrix, object.yRotation);
// Multiply the matrices.
m4.multiply(viewProjectionMatrix, worldMatrix, uniformsThatAreComputedForEachObject.u_worldViewProjection);
// Set the uniforms we just computed
webglUtils.setUniforms(programInfo, uniformsThatAreComputedForEachObject);
// Set the uniforms that are specific to the this object.
webglUtils.setUniforms(programInfo, object.materialUniforms);
if (cameraPosition[0] === 0) {
const opacity = (Math.sin((Math.abs(cameraPosition[2]) - 5) / 10 * Math.PI) + 2) / 2;
gl.uniform1f(opacityLocation, opacity);
}
else {
const opacity = 0.45 + 2 / Math.abs(cameraPosition[0]);
gl.uniform1f(opacityLocation, opacity);
console.log(cameraPosition[0], target[0]);
}
// Draw the geometry.
//gl.drawElements(gl.TRIANGLES, bufferInfo2.numElements, gl.UNSIGNED_SHORT, 0);
gl.drawElements(gl.TRIANGLES, bufferInfo.numElements, gl.UNSIGNED_SHORT, 0);
});
//console.log('drawScene');
}
function drawFrames() {
resizeCanvasToDisplaySize(canvas);
aspect = gl.canvas.clientWidth / gl.canvas.clientHeight;
//需要一个viewMatrix
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
// Tell WebGL how to convert from clip space to pixels
gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
//gl.clearColor(1.0,1.0,1.0,1.0);
// Clear the canvas AND the depth buffer.
//gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
var projectionMatrix = m4.perspective(fieldOfViewRadians, aspect, 1, 2000);
var viewProjectionMatrix = m4.multiply(projectionMatrix, viewMatrix);
gl.useProgram(frameProgramInfo.program);
// Setup all the needed buffers and attributes.
//webglUtils.setBuffersAndAttributes(gl, frameProgramInfo, bufferInfo);
webglUtils.setBuffersAndAttributes(gl, programInfo, bufferInfo2);
gl.enable(gl.BLEND);
//gl.blendFunc(gl.SRC_COLOR, gl.DST_COLOR);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
//gl.blendFunc(gl.ONE, gl.DST_COLOR);
//gl.blendFunc(gl.SRC_ALPHA, gl.DST_ALPHA);
//gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
objects.forEach(function (object) {
var worldMatrix = m4.xRotation(0);
worldMatrix = m4.translate(worldMatrix, object.xTranslation, object.yTranslation, object.zTranslation);
worldMatrix = m4.yRotate(worldMatrix, object.yRotation);
// Multiply the matrices.
m4.multiply(viewProjectionMatrix, worldMatrix, uniformsThatAreComputedForEachObject.u_worldViewProjection);
// Set the uniforms we just computed
webglUtils.setUniforms(frameProgramInfo, uniformsThatAreComputedForEachObject);
// Set the uniforms that are specific to the this object.
webglUtils.setUniforms(frameProgramInfo, object.materialUniforms);
//gl.uniform1f(opacityLocation, opacity);
//console.log(cameraPosition[2], opacity);
// Draw the geometry.
//gl.drawElements(gl.TRIANGLES, bufferInfo2.numElements, gl.UNSIGNED_SHORT, 0);
gl.drawElements(gl.TRIANGLES, bufferInfo2.numElements, gl.UNSIGNED_SHORT, 0);
});
//console.log('drawScene');
}
function camPos() {
if (id < 0) {
var cameraMatrix = m4.lookAt(cameraPosition, target, up, m4.identity());
viewMatrix = m4.inverse(cameraMatrix);
} /* else if (id==0){
cameraPosition = [0,0,0];
target = [0,0,-1000];
}*/
else {
/*
cameraPosition = [(1*id-15)*aspect, id*aspect, -20*id-20];
target = [(1*id+5)*aspect, id*aspect, -1000];
*/
cameraPosition = [0, 0, -28];
target = [0, 0, -1000];
}
}
function resizeCanvasToDisplaySize(canvas, multiplier) {
multiplier = multiplier || 2;
const width = canvas.clientWidth * multiplier | 0;
const height = canvas.clientHeight * multiplier | 0;
if (canvas.width !== width || canvas.height !== height) {
canvas.width = width;
canvas.height = height;
aspect = width / height;
return true;
}
return false;
//drawScene();
}
let imgList = [];
function generateImgList() {
for (let i = 0; i < picNum; i++) {
imgList.push("./pic-v1/" + (i + 1) + ".jpg");
}
}
function init() {
camPos();
generateImgList();
loadImages(imgList, () => {
for (var ii = 0; ii < picNum; ++ii) {
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
// Set the parameters so we can render any size image.
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
// Upload the image into the texture.
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, images[ii]);
// add the texture to the array of textures.
textures.push(texture);
//console.log(textures);
}
for (var ii = 0; ii < picNum; ++ii) {
objects.push({
yRotation: 0,
xTranslation: 0,//ii-10,
yTranslation: 0,
zTranslation: -500 + ii * 20,
materialUniforms: {
u_diffuse: textures[ii],
//u_opacity: 0.5,
},
pickIDUniform: {
u_id: [(ii + 1) / 255, 0, 0, 1],
}
});
}
render();
});
}
init();
let x0 = 0, x1 = 0, y0 = 0, y1 = 0;
function onMouseDown(e) {
isMouseDown = true;
x0 = e.clientX;
y0 = e.clientY;
canvas.addEventListener('mousemove', onMouseMove, false);
}
function onMouseMove(e) {
//console.log(e.clientX, e.clientY);
if (isMouseDown) {
x1 = e.clientX;
y1 = e.clientY;
const deltaX = x1 - x0;
const deltaY = y1 - y0;
//if(deltaX > 0.5 || deltaY >0.5){
cameraPosition[0] -= deltaX / 25;
//cameraPosition[1]+=deltaY/25;
target[0] += deltaX;
//target[1]-=deltaY;
if ((cameraPosition[2]) % 20 < 18) {
cameraPosition[2] += 0.5;
}
var cameraMatrix = m4.lookAt(cameraPosition, target, up, m4.identity());
viewMatrix = m4.inverse(cameraMatrix);
render();
x0 = x1;
y0 = y1;
}
}
function onMouseUp() {
isMouseDown = false;
canvas.removeEventListener('mousemove', onMouseMove, false);
}
function onMouseWheel(e) {
//console.log(e.deltaY);
if (Math.abs(cameraPosition[0]) < 5) {
if (cameraPosition[0] > 0) {
cameraPosition[0] -= 0.1;
cameraPosition[0] = Math.max(cameraPosition[0], 0)
} else {
cameraPosition[0] += 0.1;
cameraPosition[0] = Math.min(cameraPosition[0], 0)
}
target[0] = 0;//如何更加smooth
}
cameraPosition[2] += e.deltaY / 15;
// console.log(cameraPosition[2]);
//target=[0,0,-1000];
cameraPosition[2] = Math.max(-480, cameraPosition[2]);
cameraPosition[2] = Math.min(278, cameraPosition[2]);
var cameraMatrix = m4.lookAt(cameraPosition, target, up, m4.identity());
viewMatrix = m4.inverse(cameraMatrix);
render();
}
function render() {
drawScene();
drawFrames();
}
//canvas.addEventListener('click', pick, false);
function touchstart(e) {
//tmpConsole.innerText = 'touchstart';
x0 = e.pageX;
y0 = e.pageY;
window.addEventListener('touchmove', touchmove, false);
window.addEventListener('touchend', touchend, false);
}
function touchmove(e) {
x1 = e.pageX;
y1 = e.pageY;
//tmpConsole.innerText = 'touchmove';
const deltaX = x1 - x0;
const deltaY = y1 - y0;
cameraPosition[0] -= deltaX / 25;
target[0] += deltaX;
cameraPosition[2] += deltaY / 15;
cameraPosition[2] = Math.max(-480, cameraPosition[2]);
cameraPosition[2] = Math.min(278, cameraPosition[2]);
var cameraMatrix = m4.lookAt(cameraPosition, target, up, m4.identity());
viewMatrix = m4.inverse(cameraMatrix);
render();
x0 = x1;
y0 = y1;
}
function touchend() {
x1 = 0;
x0 = 0;
y1 = 0;
y0 = 0;
window.removeEventListener('touchmove', touchmove, false);
window.removeEventListener('touchend', touchend, false);
}
window.addEventListener('resize', render, false);
canvas.addEventListener('mousedown', onMouseDown, false);
canvas.addEventListener('mouseup', onMouseUp, false);
//window.addEventListener('load', init, false);
canvas.addEventListener('wheel', onMouseWheel, { passive: false });
window.addEventListener('touchstart', touchstart, false);
}
main();
document.addEventListener('gesturestart', function (event) { event.preventDefault() }, false);
</script>
</body>
</html>