数百个 HTML5 例子学习 HT 图形组件 – 3D建模篇

ht.Default.setShape3dModel(
    ‘custom‘, ht.Default.createRingModel(
        [0.5, 0.5, -0.2, 0, 0.5, -0.5], [1, 3]
    )
);

var colorList = [‘#FFAFA4‘, ‘#B887C5‘, ‘#B9EA9C‘, ‘#CFD9E7‘, ‘#4590B8‘, ‘#FF9C30‘],
    colorLen = colorList.length;
var randomColor = function() {
    var ran = Math.random() * colorLen;
    return colorList[Math.floor(ran)];
};

var init = function() {
    var dm = new ht.DataModel(),
        g3d = window.g3d = new ht.graph3d.Graph3dView(dm);
    g3d.getBrightness = function() { return null; };
    g3d.isMovable = function(node) { return node.s(‘shape3d‘) !== ‘custom‘; };
    g3d.addToDOM();

    var edgeList = initDataModel(dm),
        forceLayout = new ht.layout.Force3dLayout(g3d);
    forceLayout.onRelaxed = function() {
        edgeList.forEach(updatePipeline);
    };
    forceLayout.start();

    initFormPane(g3d);
};

var initDataModel = function(dm) {
    var root = createNode(dm),
        iNode, jNode, j,
        edgeList = [];
    for (var i = 0; i < 3; i++) {
        iNode = createNode(dm);
        edgeList.push(createEdge(dm, root, iNode));

        for (j = 0; j < 3; j++) {
            jNode = createNode(dm);
            edgeList.push(createEdge(dm, iNode, jNode));
        }
    }
    return edgeList;
};

var createNode = function(dm) {
    var node = new ht.Node();
    node.s({
        ‘shape3d‘: ‘sphere‘,
        ‘shape3d.color‘: randomColor()
    });
    node.s3(40, 40, 40);
    dm.add(node);
    return node;
};

var createEdge = function(dm, node1, node2) {
    var node = new ht.Node();
    node.s({
        ‘shape3d‘: ‘custom‘,
        ‘shape3d.color‘: ‘#ECE0D4‘,
        ‘layoutable‘: false
    });
    dm.add(node);

    var edge = new ht.Edge(node1, node2);
    edge.a(‘pipeline‘, node);
    edge.s(‘edge.color‘, ‘rgba(0, 0, 0, 0)‘);
    dm.add(edge);

    return edge;
};

var updatePipeline = function(edge) {
    var pipeline = edge.a(‘pipeline‘);
    pipeline.s3(1, 1, 1);
    pipeline.p3(0, 0, 0);

    var node1 = edge.getSourceAgent(),
        node2 = edge.getTargetAgent();
    pipeline.s(‘mat‘, createMatrix(node1.p3(), node2.p3(), 20));
};

var createMatrix = function(p1, p2, width) {
    var vec = [p2[0]-p1[0], p2[1]-p1[1], p2[2]-p1[2]],
        dist = ht.Default.getDistance(p1, p2);
    return ht.Default.createMatrix({
        s3: [width, dist, width],
        r3: [Math.PI/2 - Math.asin(vec[1]/dist), Math.atan2(vec[0], vec[2]), 0],
        rotationMode: ‘xyz‘,
        t3: [(p1[0]+p2[0])/2, (p1[1]+p2[1])/2, (p1[2]+p2[2])/2]
    });
};

var initFormPane = function(g3d) {
    var formPane = new ht.widget.FormPane();
    formPane.setWidth(230);
    formPane.setHeight(125);
    formPane.addToDOM();

    var view = formPane.getView();
    view.style.background = ‘rgba(186, 186, 186, 0.7)‘;
    view.style.top = ‘10px‘;
    view.style.left = ‘auto‘;
    view.style.right = ‘7px‘;

    formPane.addRow([{ element: ‘Headlight:‘, font: ‘bold 12px arial, sans-serif‘ }, {
        id: ‘disable‘,
        checkBox: {
            label: ‘disable‘,
            value: g3d.isHeadlightDisabled(),
            onValueChanged: function(oV, nV) {
                g3d.setHeadlightDisabled(nV);
            }
        }
    }], [70, 0.1]);
    formPane.addRow([], [0.1], 1.01, {background: ‘#43AFF1‘});

    [‘Color‘, ‘Range‘, ‘Intensity‘].forEach(function(name) {
        var obj = { id: name },
            func = function(oV, nV) {
                g3d[‘setHeadlight‘ + name](nV);
            };
        if (name === ‘Color‘)
            obj.colorPicker = { 
                instant: true,
                value: g3d[‘getHeadlight‘ + name](),
                onValueChanged: func
            };
        else 
            obj.slider = {
                min: 0,
                max: name === ‘Range‘ ? 20000 : 3,
                step: 0.1,
                value: g3d[‘getHeadlight‘ + name](),
                onValueChanged: func
            };
        formPane.addRow([ name, obj ], [ 70, 0.1 ]);
    });
};