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@Meister619(Loïc LE TEXIER)in株式会社マイスター・ギルド

Matterport SDK 2021 Tutorial

Last updated at Posted at 2021-06-07

マーターポートSDKの2021年のチュートリアル（日本語）

First, create a directory for our Matterport app:

mkdir matterport-test
cd matterport-test

And, let's set up a simple web server ...

The Web Server

We will use Node.js with the Express web server to serve our page.

Install Express

First, let's initialize our empty project package.json file:

npm init -y

Then, install the latest stable version of Express:

npm install express

Create The Web Server

First, create the JavaScript file for the web server:

touch server.js

Then, in the file, setup the web server:

server.js
const express = require('express');
const app = express();

Setup Express to serve static assets, such as HTML, CSS, JavaScript and images, from the public directory:

server.js
const express = require('express');
const path = require('path');
const app = express();
app.use(express.static(path.join(__dirname, 'public')))

Create the public directory:

mkdir public
cd public

Create some empty files where we will add the HTML, CSS and JavaScript for our Matterport application:

touch app.js
touch index.html
touch styles.css
cd ..

Create the route to serve our app HTML file:

server.js
// ...
app.get('/', (req, res) => {
    res.sendFile(`${__dirname}/public/index.html`);
});

Finally, let's start the Express web server by setting up a listener on port 8000

server.js
// ...
app.listen(8000, () => {
    console.log('Application listening on port 8000!');
});

Launch The Web Server

To launch the web server, run the following command:

node server.js

Now, we can access the app in a browser at "http://localhost:8000".

Matterport SDK for Embeds

On the Matterport website, there are 2 SDKs listed which are in fact complementary:

  • Matterport SDK for Embeds: The basic Matterport 3D Showcase SDK allowing web applications to execute actions changing where the end user is and what they see in 3D Showcase, and to listen to events about where the user is and what they are seeing or doing, and then react appropriately.
  • Matterport SDK Bundle: An extension of the SDK for embeds that provides a framework for deep third-party integration with Matterport models and direct access to the 3d engine, renderer, scene graph and more.

To create our first app, we will use the SDK for Embeds in (free) Sandbox access ...

The Free Tiers

The free subscription plan gives us access to developer tools in sandbox mode and with restrictions:

  • SDK keys can only be used in localhost - not on any other domains
  • API tokens can only be used against demo models - not customer-created models

Now, let's create our first app.

First App: The Basics

Let's first create a basic Matterport app ...

The HTML

First, let's create a minimal page for our app:

public/index.html
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0, shrink-to-fit=no">
        <meta name="mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-capable" content="yes" />
        <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
        <title>Matterport Test</title>
        <script src="/app.js" defer></script>
        <link rel="stylesheet" href="/styles.css">
    </head>
    <body>
    </body>
</html>

Then, add the 3D Showcase SDK to our web application by including the JavaScript library in the <head> tag:

public/index.html
<html lang="en">
    <head>
        ...
        <script src='https://static.matterport.com/showcase-sdk/2.0.1-0-g64e7e88/sdk.js'></script>
        <script src="/app.js" defer></script>
        <link rel="stylesheet" href="/styles.css">
    </head>
    ...

Finally, add an <iframe> tag to embed a Matterport Space on our web page:

public/index.html
...
    <body>
        <iframe id="showcase" width="960" height="480" title="test" frameBorder="0" allowFullScreen allow="vr"></iframe>
    </body>
</html>

Let's review some of the <iframe> attributes:

  • frameBorder="0": prevent a border to be drawn around the <iframe>.
  • allowFullScreen: show the fullscreen mode button.
  • allow="vr": found in some code samples but does not seem to do anything.
  • allow="xr-spatial-tracking": enable the xr immersive mode (SDK Bundle only).
The JavaScript

Now, in our application JavaScript code:

  • Wait until the DOMContentLoaded event.
  • Set the Matterport Space source of the <iframe>.
  • Wait until the <iframe> containing the Matterport Space loads.
  • Connect the SDK to the to the Matterport Space.
public/app.js
"use strict";

const sdkKey = "aaaaXaaaXaaaXaaaaXaaaXaaa"
const modelSid = "SxQL3iGyoDo";
const params = `m=${modelSid}&hr=0&play=1&qs=1`;

var iframe = document.getElementById('showcase');

document.addEventListener("DOMContentLoaded", () => {
    iframe.setAttribute('src', `https://my.matterport.com/show/?${params}`);
    iframe.addEventListener('load', () => showcaseLoader(iframe));
});

function showcaseLoader(iframe){
    try{
        window.MP_SDK.connect(iframe, sdkKey, '3.10')
            .then(loadedShowcaseHandler)
            .catch(console.error);
    } catch(e){
        console.error(e);
    }
}

function loadedShowcaseHandler(mpSdk){
    // ...
}

The URL parameters inside params:

  • applicationKey=aaaaXaaaXaaaXaaaaXaaaXaaa: the SDK key for our application obtained in our Matterport Account → Settings → Developer Tools, SDK Key Management.
  • hr=0: hide the open highlights button that displays the highlight reel at the bottom of the screen.
  • log=0: disable logging?
  • m=SxQL3iGyoDo: SID of the model to display.
  • play=1: Set to 1 to automatically load the <iframe> when the page loads.
  • qs=1: ?

Actions

To declare an action for 3D Showcase to execute, declare:

  • A callback to do something if the action was successful:
function successCallback(message) { console.log(message); }
  • A callback to do something if the action failed:
function errorCallback(error) { console.error(error); }
  • call the action with the necessary arguments:
mpSdk.<moduleName>.<actionName>(<actionArguments>).then(successCallback)
.catch(errorCallback);

Actions are listed in the Functions section of the Reference Docs for each module.

Example: Adding a Mattertag to a model

To create a Mattertag with a label, a description, a stem, and an image, let's declare the following object:

var myMattertag = {
    label: 'A Tool',
    description: 'A cute little vacuum cleaner!',
    media: {
        type: mpSdk.Mattertag.MediaType.PHOTO,
        src: 'https://media.4rgos.it/i/Argos/8086071_R_Z001A',
    },
    anchorPosition: { x: -3.156, y: 0.363, z: 3.082 },
    stemVector: { x: -0.822, y: -0.041, z: 0.568 }
};

⚠️ You cannot use local URLs as the media source for your images or videos!
※ To find an anchor position, stemVector and floorId for a Mattertag, the Creating Mattertags recommend to use the Intersection Inspector Tool, but a much better and user friendly tool id the Transient Tags Editor!
※ To present image or video media, Matterport use embed.ly, it is recommended to verify the image or video url with the embedly explore display tool before setting it as a media source.

Then call the add function from the Mattertag module:

mpSdk.Mattertag.add(myMattertag)
    .then(function(mattertagId) {
        console.log(mattertagId);
        // ...
    })
    .catch(function(error) {
        console.error(error);
        // ...
    });

Events

To listen to events from 3D Showcase, use the the global on function:

showcase.on(<eventName>, function (<stateArguments>) {
    // what to do when this event happens
});

※ To stop listening to events from 3D Showcase, use the the global off function.

Events are listed in the Enumerations section of the Reference Docs for each module.

Example: Detecting a click event on a Mattertag

Call the global on function with the mpSdk.Mattertag.Event.CLICK argument and check the argument of the event handler callback:

mpSdk.on(mpSdk.Mattertag.Event.CLICK,
    function (tagSid) {
        console.log('Mattertag ' + tagSid + ' was selected');
    }
);

Customization

This section is about ways to enhance the interactivity of the Matterport SDK.

Intercept Click Events on the iframe

When the user clicks on an <iframe>, it gets the focus triggering a blur event on the current window.

⚠️ Note that after the first click event, the focus need to be returned to the window or the second click event will not trigger a blur event!

⚠️ We cannot tell the difference between left, middle, and right clicks!

Now we need to check that the click happened inside Matterport <iframe> ...

Method 1: the mouseover event

To know if the click event occured on our Matterport <iframe>, embed it in a container:

    ...
    <body>
        <div id="container">
            <iframe id="showcase" ...></iframe>
        </div>
    </body>
</html>

And listen to the mouseover and mouseout events to keep track of the position of the mouse pointer in a state object:

var stateObject = {
    isMouseOverIframe : false
}
window.addEventListener('blur',function(){
    if(stateObject.isMouseOverIframe){
        console.log('Yes! The click happened inside the iframe!');
        window.focus()
    }
});
document.getElementById('container').addEventListener('mouseover',function(){
    stateObject.isMouseOverIframe = true;
});
document.getElementById('container').addEventListener('mouseout',function(){
    stateObject.isMouseOverIframe = false;
});

⚠️ For mobile we would have to handle Touch events like touchstart and touchend.

Method 2: document.activeElement

To know if the click event occured on our Matterport <iframe>, check that the document.activeElement is the same as the element referenced by the iframe variable:

window.addEventListener('blur',function(){	
    window.setTimeout(function () {	
        if (document.activeElement === iframe) {
            console.log('Yes! The click happened inside the iframe!');
            window.focus()
        }
    }, 0);
});

※ the 0 seconds setTimeout is used to make this work in Firefox.

Insert Mattertags into the model visually

The source code of the app of the Transient Tags Editor is privately hosted on github (Maybe because it doesn't run perfectly on Firefox?), unlike the source code of the Intersection Inspector which is publicly hosted on JSFiddle.

But the user friendliness of the Transient Tags Editor intrigued me and I wanted to understand the difference between the two tools Matterport SDK provides to find out Mattertags coordinates.

How the Intersection Inspector works

The Intersection Inspector uses a timer to display a button at the position of the Pointer when the user does not move the pointer for more than one second. The user can then click the button to see the Mattertag coordinates and copy them manually ...

To achieve that, it needs the current Camera position, which it obtains by observing the camera's pose property:

    var poseCache;
    mpSdk.Camera.pose.subscribe(function(pose) {
        poseCache = pose;
    });

Also, it needs the current Pointer position, which it obtains by observing the pointer's intersection property:

    var intersectionCache;
    mpSdk.Pointer.intersection.subscribe(function(intersection) {
        intersectionCache = intersection;
        intersectionCache.time = new Date().getTime();
        button.style.display = 'none';
        buttonDisplayed = false;
    });

※ An intersection event is triggered the user moves the pointer, so we hide the button to make sure it is not displayed before the one second delay is over.

Then, a timer is set up using setInterval() to display the button at the right time:

    setInterval(() => {
        // ...
    }, 16);

In the timer callback, we check wether all the conditions to display the button are met ...

  • First, check we have the information we need:
    setInterval(() => {
        if (!intersectionCache || !poseCache) {
            return;
        }
        // ...
    }, 16);
  • Then, check one second has elapsed since the last intersection event was received, or we wait the next tick to check again:
    var delayBeforeShow = 1000;
    setInterval(() => {
        if (!intersectionCache || !poseCache) {
            return;
        }
        const nextShow = intersectionCache.time + delayBeforeShow;
        if (new Date().getTime() > nextShow) {
            // ...
        }
    }, 16);
  • Finally, we check the button is not already being displayed:
    var delayBeforeShow = 1000;
    var buttonDisplayed = false;
    setInterval(() => {
        if (!intersectionCache || !poseCache) {
            return;
        }
        const nextShow = intersectionCache.time + delayBeforeShow;
        if (new Date().getTime() > nextShow) {
            if (buttonDisplayed) {
                return;
            }
            // ...
        }
    }, 16);

Once the conditions are met, we can display the button using Conversion.worldToScreen() to get the screen coordinate of the pointer :

    // ...
    setInterval(() => {
        // ...
        if (new Date().getTime() > nextShow) {
            // ...
            var size = {
                w: iframe.clientWidth,
                h: iframe.clientHeight,
            };
            var coord = mpSdk.Conversion.worldToScreen(intersectionCache.position, poseCache, size);
            button.style.left = `${coord.x - 25}px`;
            button.style.top = `${coord.y - 22}px`;
            button.style.display = 'block';
            buttonDisplayed = true;
        }
    }, 16);

The button is a simple HTML button hidden by default using display: none; and positioned relative to the body with position: absolute;.

When the user clicks the button, the current coordinates of the pointer are displayed in a <div> tag above the <iframe> and the button is hidden:

    button.addEventListener('click', function() {
        text.innerHTML = `position: ${pointToString(intersectionCache.position)}\nnormal: ${pointToString(intersectionCache.normal)}\nfloorId: ${intersectionCache.floorId}`;
        button.style.display = 'none';
        iframe.focus();
    });

The coordinates are formatted using the following function:

function pointToString(point) {
  var x = point.x.toFixed(3);
  var y = point.y.toFixed(3);
  var z = point.z.toFixed(3);

  return `{ x: ${x}, y: ${y}, z: ${z} }`;
}

Now, let's see how the easier-to-use and user-friendlier Transient Tags Editor interface works ...

How the Transient Tag Editor works

The Intersection Inspector is enough if you just have a few __Mattertag__s to set permanently in a few models in your application. But if you need your users to set tags interactively in models, something like the Transient Tags Editor's GUI is a better starting point.

The main advantage of using the Transient Tags Editor is that you can see how the Mattertag will be displayed before creating it and! That allows you to place the tag precisely without trial and error ...

To add a tag, you must click on the "Place New Tag" button to enter the "add tag" mode, then you can place one new tag anywhere you want.

We will only focus on that aspect of the editor and produce a simplified code sample that only add tags:

  • As the user move a tag along the pointer when in "add tag" mode, the first step is to create a new tag and place it. Let's create a function for that using Mattertag.add():
    function addTag() {
        if(!tag){
            mpSdk.Mattertag.add([{
                label: "Matterport Tag",
                description: "",
                anchorPosition: {x: 0, y: 0, z: 0},
                stemVector: {x:0, y: 0, z: 0},
                color: {r: 1, g: 0, b: 0},
            }])
            .then((sid) => {
                tag = sid[0];
            })
            .catch( (e) => {
                console.error(e);
            })
        }
    }
  • Then we will have to place the tag at a position near the pointer, and update its position as the user moves the pointer, so let's create a function for that using Mattertag.editPosition():
    function updateTagPos(newPos, newNorm=undefined, scale=undefined){
        if(!newPos) return;
        if(!scale) scale = .33;
        if(!newNorm) newNorm = {x: 0, y: 1, z: 0};

        mpSdk.Mattertag.editPosition(tag, {
            anchorPosition: newPos,
            stemVector: {
                x: scale * newNorm.x,
                y: scale * newNorm.y,
                z: scale * newNorm.z,
            }
        })
        .catch(e =>{
            console.error(e);
            tag = null;
        });
    }

As you can see the updateTagPos() function takes 3 parameters:

  1. newPos: the new anchor position for the Mattertag.
  2. newNorm: an optional new stem vector for the Mattertag.
  3. scale: an optional new scale for the stem of the Mattertag.
  • To update the tag position as the user moves the pointer, let's observe the pointer's intersection property to call updateTagPos():
    mpSdk.Pointer.intersection.subscribe(intersectionData => {
        if(tag){
            if(intersectionData.object === 'intersectedobject.model' || intersectionData.object === 'intersectedobject.sweep'){
                updateTagPos(intersectionData.position, intersectionData.normal);
            }
        }
    });
  • To place the new tag, the user simply clicks their mouse button, the Transient Tags Editor provides its own version of the document.activeElement method for intercepting clicks on the <iframe> (but does not work with Firefox so the editor use a quite complex workaround):
    function focusDetect(){
        const eventListener = window.addEventListener('blur', function() {
            if (document.activeElement === iframe) {
                placeTag(); //function you want to call on click
                setTimeout(function(){ window.focus(); }, 0);
            }
            window.removeEventListener('blur', eventListener );
        });
    }

But, we will use our version which works better with Firefox (But still stop working after the first click in Firefox for whatever reason):

    window.addEventListener('blur',function(){  
        window.setTimeout(function () { 
            if (document.activeElement === iframe) {
                placeTag(); //function you want to call on click
                window.focus()
                addTag();
            }
        }, 0);
    });

    function placeTag(){
        if(tag) mpSdk.Mattertag.navigateToTag(tag, mpSdk.Mattertag.Transition.INSTANT);
        tag = null;
    }
Simple Editor Code Sample

First, the complete JavaScript source code:

"use strict";

const sdkKey = "aaaaXaaaXaaaXaaaXaaaXaaa"
const modelSid = "iL4RdJqi2yK";

let iframe;
let tag;

document.addEventListener("DOMContentLoaded", () => {
    iframe = document.querySelector('.showcase');
    iframe.setAttribute('src', `https://my.matterport.com/show/?m=${modelSid}&help=0&play=1&qs=1&gt=0&hr=0`);
    iframe.addEventListener('load', () => showcaseLoader(iframe));
});

function showcaseLoader(iframe){
    try{
        window.MP_SDK.connect(iframe, sdkKey, '3.10')
        .then(loadedShowcaseHandler)
        .catch(console.error);
    } catch(e){
        console.error(e);
    }
}

function loadedShowcaseHandler(mpSdk){
    addTag()

    function placeTag(){
        if(tag) mpSdk.Mattertag.navigateToTag(tag, mpSdk.Mattertag.Transition.INSTANT);
        tag = null;
    }

    window.addEventListener('blur',function(){  
        window.setTimeout(function () { 
            if (document.activeElement === iframe) {
                placeTag(); //function you want to call on click
                window.focus()
                addTag();
            }
        }, 0);
    });
    function updateTagPos(newPos, newNorm=undefined, scale=undefined){
        if(!newPos) return;
        if(!scale) scale = .33;
        if(!newNorm) newNorm = {x: 0, y: 1, z: 0};

        mpSdk.Mattertag.editPosition(tag, {
            anchorPosition: newPos,
            stemVector: {
                x: scale * newNorm.x,
                y: scale * newNorm.y,
                z: scale * newNorm.z,
            }
        })
        .catch(e =>{
            console.error(e);
            tag = null;
        });
    }

    mpSdk.Pointer.intersection.subscribe(intersectionData => {
        if(tag){
            if(intersectionData.object === 'intersectedobject.model' || intersectionData.object === 'intersectedobject.sweep'){
                updateTagPos(intersectionData.position, intersectionData.normal);
            }
        }
    });

    function addTag() {
        if(!tag){
            mpSdk.Mattertag.add([{
                label: "Matterport Tag",
                description: "",
                anchorPosition: {x: 0, y: 0, z: 0},
                stemVector: {x:0, y: 0, z: 0},
                color: {r: 1, g: 0, b: 0},
            }])
            .then((sid) => {
                tag = sid[0];
            })
            .catch( (e) => {
                console.error(e);
            })
        }
    }
} // loadedShowcaseHandler

The HTML source code:

<!DOCTYPE html>
<html>
    <head>
        <title>Transient Tag Editor</title>
        <style>
            #showcase {
                width: 100%;
                height: 100vh;
            }
        </style>
        <script src="https://static.matterport.com/showcase-sdk/2.0.1-0-g64e7e88/sdk.js"></script>
        <script src="/js/app-editor.js" type="text/javascript" defer></script>
    </head>
    <body>
        <iframe id="showcase" frameborder="0"  allowFullScreen allow="xr-spatial-tracking"></iframe>
    </body>
</html>

It works!

Matterport SDK Bundle

To create our second app, this time we will use the SDK Bundle, still in (free) Sandbox access ...

First, download the the latest SDK Bundle package.

Then, let's update our server to handle a second route for our second application ...

The Web Server

Let's add a route for our bundle app:

server.js
// ...
app.get('/bundle', (req, res) => {
    res.sendFile(`${__dirname}/public/index-bundle.html`);
});
app.listen(8000, () => {
    console.log('Application listening on port 8000!');
});

Then, restart the web server ...

Second App: The Basics

Let's create another basic Matterport app, as it is similar to the first one, we can copy the first app file and rename them ...

The HTML

First, let's copy the index.html file and rename it to index-bundle.html.

Change the filename of the JavaScript to app-bundle.js:

public/index-bundle.html
...
        <script src="/app-bundle.js" defer></script>
...
The JavaScript

Now, let's copy the app.js file and rename it to app-bundle.js.

There, change the iframe sourceURL to /bundle/showcase.html?${params}:

public/app-bundle.js
// ...
document.addEventListener("DOMContentLoaded", () => {
    iframe.setAttribute('src', `/bundle/showcase.html?${params}`);
    iframe.addEventListener('load', () => showcaseLoader(iframe));
});
// ...

And change the connect statement to iframe.contentWindow.MP_SDK.connect:

public/app-bundle.js
// ...
function showcaseLoader(iframe){
    try{
        iframe.contentWindow.MP_SDK.connect(iframe, sdkKey, '3.10')
            .then(loadedShowcaseHandler)
            .catch(console.error);
    } catch(e){
        console.error(e);
    }
}
// ...

The Scene

The SDK Bundle provides an additional module to the standard SDK: the Scene module.

Lighting

A scene needs lights, otherwise the models are displayed black.

Matterport provide a basic light component called mp.lights for this. Let's create a node in the scene using Scene.createNode() and attach a component to it with INode.addComponent():

loadedShowcaseHandler(mpSdk)
    const lights = await mpSdk.Scene.createNode();
    lights.addComponent('mp.lights');
    lights.start();

※ We call INode.start() on the component, so that it starts operating.

The Models

The SDK Bundle supports loading the following scene and model asset types:

  • dae with mpSdk.Scene.Component.DAE_LOADER
  • fbx with mpSdk.Scene.Component.FBX_LOADER
  • obj with mpSdk.Scene.Component.OBJ_LOADER
  • gltf with mpSdk.Scene.Component.GLTF_LOADER

Models are added to the scene as components like the lighting components:

loadedShowcaseHandler(mpSdk)
    // ...
    const modelNode = await mpSdk.Scene.createNode();
    const fbxComponent = modelNode.addComponent(mpSdk.Scene.Component.DAE_LOADER, {
        url: 'https://gitcdn.link/repo/mrdoob/three.js/dev/examples/models/collada/stormtrooper/stormtrooper.dae',
    });

※ A few models are listed in the tutorial Working With Models from the SDK Bundle documentation.

Scaling

Some models aren’t calibrated to real world units so you may have to adjust the model to be a more realistic size by scaling it:

loadedShowcaseHandler(mpSdk)
    // ...
    fbxComponent.inputs.localScale = {
        x: 0.3,
        y: 0.3,
        z: 0.3
    };
Positioning

The default position is (0, 0, 0) but if we don't want our stormtrooper floating in the air, we need to lower it down:

loadedShowcaseHandler(mpSdk)
    // ...
    modelNode.obj3D.position.set(0,-1.65,0);
Rotation

Our stormtrooper model faces away from the camera when the angle along the y axis is 0, and toward the camera when the angle is 𝜋:

loadedShowcaseHandler(mpSdk)
    // ...
    modelNode.obj3D.rotation.y = Math.PI

※ Matterport uses radians to specify angles、 like Three.js.

Activation

Like for the lighting component we need to activate our model with INode.start():

loadedShowcaseHandler(mpSdk)
    // ...
    modelNode.start();

Second App: Wrap up

Let's finish our second app ...

Animation

To animate our model simply use the requestAnimationFrame() function.

Let's make our stormtrooper slowly rotate while moving back and forth:

loadedShowcaseHandler(mpSdk)
    // ...
    let step = -0.1
    let zPos = 0
    const tick = function() {
        requestAnimationFrame(tick);
        if (zPos>= 1.8) {
            step = -0.02
        } else if (zPos <= -0.4) {
            step = 0.02
        }
        zPos += step
        modelNode.obj3D.rotation.y += 0.02;
        modelNode.obj3D.position.set(0,-1.65,zPos);
    }
    tick();
The complete JavaScript code

Let's put it all together in the app-bundle.js file:

app-bundle.js
"use strict";

const sdkKey = "aaaaXaaaXaaaXaaaaXaaaXaaa"
const modelSid = "22Ub5eknCVx";
const params = `m=${modelSid}&play=1&qs=1&log=0&applicationKey=${sdkKey}`;

var iframe = document.getElementById('showcase');

document.addEventListener("DOMContentLoaded", () => {
    iframe.setAttribute('src', `/bundle/showcase.html?${params}`);
    iframe.addEventListener('load', () => showcaseLoader(iframe));
});

function showcaseLoader(iframe){
    try{
        iframe.contentWindow.MP_SDK.connect(iframe, sdkKey, '3.10')
        .then(loadedShowcaseHandler)
        .catch(console.error);
    } catch(e){
        console.error(e);
    }
}

async function loadedShowcaseHandler(mpSdk){
  const lights = await mpSdk.Scene.createNode();
  lights.addComponent('mp.lights');
  lights.start();

  const modelNode = await mpSdk.Scene.createNode();
  const fbxComponent = modelNode.addComponent(mpSdk.Scene.Component.DAE_LOADER, {
    url: 'https://gitcdn.link/repo/mrdoob/three.js/dev/examples/models/collada/stormtrooper/stormtrooper.dae',
  });

  fbxComponent.inputs.localScale = {
    x: 0.3,
    y: 0.3,
    z: 0.3
  };

  modelNode.obj3D.position.set(0,-1.65,0);

  modelNode.obj3D.rotation.y = Math.PI

  modelNode.start();

  let step = -0.1
  let zPos = 0
  const tick = function() {
    requestAnimationFrame(tick);
    if (zPos>= 1.8) {
      step = -0.02
    } else if (zPos <= -0.4) {
      step = 0.02
    }
    zPos += step
    modelNode.obj3D.rotation.y += 0.02;
    modelNode.obj3D.position.set(0,-1.65,zPos);
  }
  tick();
}

Matterport Model API

In addition to the 2 SDKs we explored in this tutorial, Matterport also provides a GraphQL API called Model API which use the API Token and the differences with the SDKs are explained in the FAQ

For people logged in Matterport Cloud (my.matterport.com) with admin credentials, an interactive console allowing to experiment with the GraphQL API on a limited basis is available along with the reference documentation

Complete Code

The complete code for all the samples is available on github:
github.com/loic-meister-guild/pj-matterport-sdk-2021-tutorial

See Also

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