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HT for Web自定义3D模型的WebGL应用

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有不少朋友询问《HTML5 Web 客户端五种离线存储方式汇总》文章例子的3D表计模型是如何生成的,这个例子是通过导入3dmax设计好的表计模型,然后通过obj格式导入到HT for Web系统中进行控制,这种方式特别适合复杂模型的应用场景,但对于监控系统的很多应用其实并不需要专业的美工使用专业的3D编辑工具,完全通过HT for Web预定义的和内置自定义3D模型API就能满足很多应用,这里介绍几种场景的自定义3D模型应用。

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上图是采用HT提供的createRingModel函数,通过编辑2D的多边形生成对应的环状的3D模型,对于花瓶碗杯等环形对称的物体很适合采用该函数构建。除了createRingModel外,HT的建模手册中的custommodel自定义模型例子,还采用了createExtrusionModel等更多的自定义模型API构建了一个餐桌椅和墙面的场景,其效果如下:

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HT内置的基础模型也有很多参数可调节设置出多种模型效果,参见HT建模手册的如下例子:

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自定义模型还可用于构建如机房、机框、板卡和端口的常见电信网管监控模型:

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该EMS设备管理系统例子3D模型和Tree组件通过HT强大灵活的模型与图形的数据绑定功能,从而实现树上自定义图标和3D自定义模型的数据共享,实时一致刷新效果,以下为该EMS例子的全部JavaScript代码:

function init(){                                     dm = new ht.DataModel();                    treeView = new ht.widget.TreeView(dm);                                                                                                     g3d = new ht.graph3d.Graph3dView(dm);                              mainSplit = new ht.widget.SplitView(treeView, g3d, ‘h‘, 0.2);           view = mainSplit.getView();      view.className = ‘main‘;    document.body.appendChild(view);        window.addEventListener(‘resize‘, function (e) {        mainSplit.invalidate();    }, false);                             register2DImage();    register3DModel();    addModel();                         g3d.setGridVisible(true);     g3d.setGridSize(30);    g3d.setGridGap(50);    g3d.setEye([200, 200, 600]);    g3d.setCenter([0, 200, 0]);    g3d.getView().style.background = ‘#F9F9F9‘;                     g3d.getLabel = function(data){        return data.s(‘label‘);    };    dm.sm().setFilterFunc(function(data){        return data !== wall;    });    treeView.setVisibleFunc(function(data){        return data !== wall;    });                    treeView.expandAll();}function register2DImage(){    ht.Default.setImage(‘ems-frame‘, {        width: 18,        height: 18,        comps: [            {                type: ‘rect‘,                rect: [5, 4, 8, 11],                borderWidth: 2,                borderColor: ‘#34495E‘            }                             ]});            ht.Default.setImage(‘ems-pane‘, {        width: 18,        height: 18,        comps: [            {                type: ‘rect‘,                rect: [0, 4, 18, 10],                background: {func: ‘style@shape3d.color‘}            }                             ]});         ht.Default.setImage(‘ems-block‘, {        width: 18,        height: 18,        comps: [            {                type: ‘circle‘,                rect: [0, 2, 18, 10],                background: {                    func: ‘attr@circleColor‘,                    value: ‘#3498DB‘                                               }            },             {                type: ‘rect‘,                rect: [4, 14, 10, 3],                background: {                    func: ‘attr@rectColor‘,                    value: ‘#3498DB‘                                               }            }                               ]});                 }function register3DModel(){    ht.Default.setShape3dModel(‘ems-frame‘, ht.Default.createFrameModel(0.1, 0, 0.1, {top: true, bottom: true, back: true}));           ht.Default.setShape3dModel(‘ems-block‘, [        {            shape3d: ht.Default.createCylinderModel(32, 0, 32, false, false, true, true),               r3: [Math.PI/2, 0, 0],               color: {                func: ‘attr@circleColor‘,                value: ‘#3498DB‘            }             },        {            shape3d: ‘box‘,            s3: [1, 0.2, 1],             t3: [0, -0.7, 0],            color: {                func: ‘attr@rectColor‘,                value: ‘#3498DB‘            }        }    ]);                  }function addModel(){    wall = new ht.Shape();    wall.setName(‘Wall‘);    wall.setPoints(new ht.List([        {x: -750, y: 750},        {x: -750, y: -750},        {x: 750, y: -750},        {x: 750, y: 750}    ]));    wall.setTall(400);    wall.setElevation(200);    wall.s({        ‘shape.border.width‘: 5,        ‘shape.border.color‘: ‘rgba(20, 20, 20, 0.8)‘,        ‘shape.background‘: null,            ‘all.color‘: ‘rgba(102, 192, 218, 0.95)‘,        ‘all.transparent‘: true,        ‘all.reverse.cull‘: true    });    dm.add(wall);                                                   var frame = new ht.Node();    frame.setName(‘Main Frame‘);    frame.setIcon(‘ems-frame‘);    frame.s3(120, 300, 120);    frame.p3(0, 152, 0);    frame.s({        ‘shape3d‘: ‘ems-frame‘,        ‘shape3d.color‘: ‘#34495E‘,        ‘label‘: ‘www.hightopo.com‘,        ‘label.color‘: ‘white‘,        ‘label.background‘: ‘#3498DB‘,        ‘label.position‘: 6,        ‘label.t3‘: [-6, -54, 6],        ‘label.r3‘: [0, Math.PI/4, Math.PI/2]    });    dm.add(frame);                                        var colors = [‘#9C8CE7‘, ‘#00C59D‘, ‘#A741B6‘, ‘#F5C700‘, ‘#31485F‘, ‘#F81F25‘, ‘#00B862‘, ‘#3B7DA7‘];    for(var i=0; i<6; i++){        var pane = new ht.Node();        pane.setIcon(‘ems-pane‘);        pane.setName(‘Pane‘ + (i+1));        pane.s3(108, 16, 8);                            pane.s({            ‘shape3d‘: ‘box‘,            ‘shape3d.color‘: ‘#ECF0F1‘        });        pane.setHost(frame);        pane.setParent(frame);                             dm.add(pane);                if(i < 2){            for(var j=0; j<8; j++){                var block = new ht.Node();                block.setName(‘block ‘ + i + ‘*‘ + j);                block.s3(8, 8, 12);                                block.p3(-39+j*11, 1, 0);                block.setHost(pane);                block.setParent(pane);                 block.setIcon(‘ems-block‘);                block.s({                    ‘shape3d‘: ‘ems-block‘                });                                       if(i === 1){                    block.a({                        ‘circleColor‘: colors[j],                        ‘rectColor‘: ‘#00F2CF‘                    });                                    }                dm.add(block);                                                    }                             }else{            pane.setName(‘Pane‘ + (i+1) + ‘ [ Empty ]‘);            pane.s({                ‘shape3d.color‘: ‘#BDC3C7‘            });        }                           pane.p3(0, 265-i*27, 54);    }                }

 

HT for Web自定义3D模型的WebGL应用