Viewer widget API v1.0

Getting started

The Viewer widget API allows developers to add predefined widgets

  • keyboard navigation
  • joystick navigation
  • a context menu
  • viewer-2d integration

to their viewer app.

Dependencies

Viewer widget API requires jQuery 1.x to run.

Initialize

Viewer widget API can either be automatically initialized by using the DOM data API or manually initialized in JavaScript.

DOM Data API

  1. Create a viewer access token by using the POST /viewer/access resources in the bimsync API.

  2. Add the viewer framework to you application:

    <script type="text/javascript" src="https://api.bimsync.com/1.0/js/viewer.js"></script>

  3. Create a viewer instance, and add the data attribute data-ui.

    <div data-viewer="webgl" data-url="https://api.bimsync.com/1.0/viewer/access?token=897..." 
        data-ui 
        data-enable-joystick="true"
        data-enable-context-menu="true"
        data-viewer2d-id="viewer-2d"
        data-enable-viewer2d-integration="true"
        data-show-viewer2d-storey-select="true">
</div>

Click here for a complete example

JavaScript

  1. Create a viewer access token by using the POST /viewer/access resources in the bimsync REST API.

  2. Create a DIV container element which will contain the viewer element. If you are not using the joystick navigation, you can skip the container.

    <div id="viewer-container">
    <div id="viewer"></div>
</div>

If you are using the viewer-2d integration with the storey select enabled, be sure to put the viewer-2d element in a container as well.

    <div id="viewer-2d-container">
        <div id="viewer-2d"></div>
    </div>

    <!-- If you are using the viewer-2d integration with the storey-select enabled, be sure to put the viewer-2d element in a container as well. -->

    <div id="viewer-2d-container">
        <div id="viewer-2d"></div>
    </div>
  1. Follow the pattern in the snippet below to initialize: 
    <script type="text/javascript" src="https://api.bimsync.com/1.0/js/viewer.js"></script>
<script type="text/javascript">
    // When loading the Viewer API, include a parameter ['viewer-ui']
    bimsync.load(['viewer-ui']);

    // Set a callback to run when the Viewer API is loaded
    bimsync.setOnLoadCallback(viewerLoaded);

    // Callback that loads a viewer access token URL and initializes the UI widget
    function viewerLoaded() {
        //Load the geometry
        $('#viewer').viewer('loadUrl', 'https://api.bimsync.com/1.0/viewer/access?token=897...');

        // Initialize the viewer UI widget with desired options
        $('#viewer').viewerUI({
            enableJoystick: true,
            joystickHidden: false,
            enableContextMenu: true,
            viewer2dId: 'viewer-2d',
            enableViewer2dIntegration: true,
            showViewer2dStoreySelect: true
            // ...
        });
    }
</script>

Click here for a complete example

Options

var options = {
    enableKeyboard: Boolean,            // Default false
    enableJoystick: Boolean,            // Default true
    joystickHidden: Boolean,            // Default true
    joystickColor: String,              // Default 'blue', accepts any valid CSS color
    joystickPosition: String,           // Default 'bottom-center'.
    joystickRotationClamp: Number,      // Default 2, rotation speed is divided by this number
    joystickBorderOffset: String,       // Default '20px', accepts any valid CSS style
    joystickSize: Integer,              // Default 100, size in px
    spacesVisible: Boolean,             // Default false, note that you have to use the setSpaces method for this to work
    viewer2dId: String,                 // Default null
    enableViewer2dIntegration: Boolean, // Default false
    showViewer2dStoreySelect: Boolean   // Default false
    enableContextMenu: Boolean,         // Default false
    translations: Object                // Default { showAll: "Show all", hide: "Hide", hideOthers: "Hide others", makeTranslucent: "Make translucent", isolate: "Isolate", lookAt: "Look at", removeClippingPlanes: "Remove Clipping Planes", addClippingPlane: "Add clipping plane", sectionTopAndBottom: "Section top and bottom", noModelsLoaded: "No models loaded.", loading: "Loading...", defaultBuildingName: "(unknown building)", defaultModelName: "(unknown model)" }
};

enableKeyboard

This enables keyboard shortcuts and navigation in the viewer.

Shortcuts:

g               : show
shift + g, o    : show all
h               : hide
del             : remove selected clipping plane, or hide selected 
shift + h       : hide others
t               : make translucent
shift + t, i    : make others translucent
l               : look at

Navigation:

w, up           : move foreward
s, down         : move backward
a, left         : move left
d, right        : move right
x, shift + up   : move up
c, shift + down : move down
q, ins          : rotate left
e, home         : rotate right
r, pageup       : rotate up
f, pagedown     : rotate down

enableJoystick

Enables joystick navigation. The joystick can be used to navigate in the viewer on touch screens, or with the mouse.

joystickHidden

Wheter the joystick should be default hidden or not.

joystickColor

The color of the joystick widget. Any valid CSS color should work.

joystickPosition

The default position of the joystick. Possible values: 'middle-left', 'bottom-left', 'bottom-center', 'bottom-right', 'middle-right'

joystickRotationClamp

The rotation speed is originally set using the $('.viewer').viewer('rotationspeed', 50.0); method. To use a different rotation speed when navigating with the joystick, this number can be set to something other than 1. The base rotation speed when navigating with the joystick will be the viewers rotation speed divided by this number.

joystickBorderOffset

Used to adjust the position the joystick, i.e. move it a bit farther from the border.

joystickSize

The px size of the joystick widget. Defaults to 100

spacesVisible

Wheter or not spaces should be shown. To get this to work you have to use the setSpaces method first to let the widget know the ids of the spaces. If spacesVisible is set to false, spaces will be hidden, and remain hidden when the user triggers a show all event.

For an example of how to find the spaces in the first place, see the setSpaces method below.

viewer2dId

If you want to enable viewer-2d integration, you have to specify the id of the viewer-2d element.

enableViewer2dIntegration

Enables the 2d - 3d integration when it is set to true.

Note: you also have to specify the id of the 2d-viewer element.

showViewer2dStoreySelect

If this is set to true, a storey dropup will be added to the 2d-container.

Note: you also have to specify the id of the 2d-viewer element.

enableContextMenu

When enabled, a dropdown menu should appear when right-clicking in the viewer. From the context menu you should be able to show, hide, make translucent and add/remove clipping planes.

translations

Translate the context menu.

// Example norwegian translation:
$('#viewer').viewerUI({
    // ...
    enableContextMenu: true,
    translations: {
        showAll: "Vis alle",
        hide: "Skjul",
        hideOthers: "Skjul andre",
        makeTranslucent: "Sett gjennomsiktig",
        isolate: "Isoler",
        lookAt: "Se på",
        removeClippingPlanes: "Fjern klippeplan",
        addClippingPlane: "Legg til klippeplan",
        sectionTopAndBottom: "Klipp top og bunn"
    }
});

Methods

All methods are invoked by calling the method viewerUI on the result of a jQuery/$ function call. The first argument to the viewerUI method must be the method name.

showJoystick

Shows the joystick. Joystick must be enabled for this to work.

Parameters: None

hideJoystick

Hides the joystick

Parameters: None

joystickPosition

Sets the position of the joystick.

Parameters:

  • position - String - Possible values: 'middle-left', 'bottom-left', 'bottom-center', 'bottom-right', 'middle-right'

updateJoystickOptions

Updates the options, and redraws the joystick.

Parameters:

  • options - Object - an object with the options to be updated.

setSpaces

By default the viewer will display spaces. If you want to hide the spaces, and make sure they remain hidden when you trigger a show all event, you can use this method to let the viewer know the objectIds of the spaces. You also have to make sure the showSpaces option is set to false.

To find the spaces you may use POST /revision/products resources in the bimsync REST API with the type options set to "IfcSpace":

POST https://api.bimsync.com/1.0/revision/products?model_id=ebad2a8ffc1d44ab86341a6d3d98e87e

{
    "type": [ "IfcSpace" ]
}

This will return an Array of IfcSpace objects, extract all the objectId values and put them in an array. Use the array as input in this method.

Parameters:

  • id - String or Array

setSpacesVisible

Sets the spacesVisible option. If true spaces will be shown, if false spaces will be hidden even when a show all event is triggered.

Parameters:

  • visible - Boolean

set2dLockedNavigationMode

If 2d integration is activated, this will lock the cursor of the 2d-viewer in the center of the 2d-viewer.

Parameters:

  • on/off - Boolean

set2dLockStoreyMode

If 2d integration is activated and the storey select is shown, this will make sure that the selected 2d storey do not change when navigating in 3d.

Parameters:

  • on/off - Boolean