examples/geometry_points.html

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<div id="infoDark">
    <a href="http://scenejs.org">SceneJS</a> - points geometry
</div>

<script>

    // Point SceneJS to the bundled plugins
    SceneJS.setConfigs({
        pluginPath:"../api/latest/plugins"
    });

    // Create scene
    var scene = SceneJS.createScene({
        nodes:[

            // Mouse-orbited camera, implemented by plugin at
            // http://scenejs.org/api/latest/plugins/node/cameras/orbit.js
            {
                type:"cameras/orbit",
                yaw:30,
                pitch:-30,
                zoom:10,
                zoomSensitivity:1.0,

                nodes:[
                    {
                        type:"material",
                        color:{ r:1.0, g:0.6, b:0.4 },
                        emit:0.3,
                        nodes:[

                            // Geometry node which defines our point cloud
                            {

                                type:"geometry",
                                id:"points",

                                // The primitive type - allowed values are
                                // "points", "lines", "line-loop", "line-strip",
                                // "triangles", "triangle-strip" and "triangle-fan".
                                //
                                // See the OpenGL/WebGL specification docs for
                                // how the coordinate arrays are supposed to be laid out
                                // for them.
                                primitive:"points",

                                // The vertices - eight for our cube, each
                                // one spanning three array elements for X,Y and Z
                                positions:createPoints(6000),

                                pointSize:1
                            }
                        ]
                    }
                ]
            }
        ]
    });

    // Helper func to create random positions
    function createPoints(n) {
        var p = [];
        for (var i = 0; i < n; i++) {
            p.push(Math.random() * 2.0, Math.random() * 2.0, Math.random() * 2.0);
        }
        return p;
    }

    scene.getNode("points", function (points) {
        var size = points.getPointSize();
        var increment = 0.1;

        scene.on("tick", function () {
            size += increment;

            points.setPointSize(size);

            if (size > 10 || size < 1) {
                size = Math.max(1, Math.min(size, 10));
                increment *= -1;
            }
        });
    });

</script>
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