Start your studio Let’s select ENGINE1, by clicking its button ENGINE1. This is basically where you start configuring your Reality Processing Engine. By default, you only have the MIXER and ENGINE CONTROL nodes.

Left click the mouse on the MIXER node, this will bring the ZDNode PROPERTIES of the nodes. You can click on the Functions tab and list the callable functions of the nodes. 

For zooming in-out the node-graph, you can use the mouse wheel. For panning you should use the middle mouse button.

Adding Nodes to Reality Setup

In order to add nodes into the node graph, just right click on an empty area. Under Create menu, there are many categories for processing nodes.

There is another way to add nodes which is much more simple. Just press the Tab key on your keyboard and you will see the search box dialog so you can write node name and add it to your node graph easily.

This method of adding node is so easy that you don't even to remember the exact beginning letter of the node, simply type in any letter that is contained in your desired node. For example, if you want to add an AUDIO MIXER node, you can just type in "xer" (as these letters appear in the word Mixer), you will be displayed with your desired option(s).

For the purpose of a quick start, lets create a CAMERA node. The camera node is generated where you right-click on the node graph and then Create > UE Render > Camera. Left click and drag the CAMERA node and you can place your node wherever you want in your node graph. 

Connecting Nodes

Just left-click to the Output pin of the CAMERA0 node, this will create a connection wire just under your mouse pointer. Release your left mouse button and connect the wire to MIXER nodes CHANNEL1 input pin.

Once you connect the CAMERA0 to MIXER, you are going to see the rendering output of the camera on your MULTIVIEWER's program output. This camera render becomes automatically visible because by default MIXER node displays CHANNEL1 input. Just select the MIXER node, and look at its Properties on the left.

The reason why we are seeing the result in our MULTIVIEWER is, that MIXER's MULTIVIEWER output pin is connected to the ENGINE CONTROL's DISPLAY pin.

Modifying Node Properties

Left click the CAMERA0 node using the mouse the camera node will become selected (outlined with a yellow border) and you will see its properties on the left side of the window. By default, the camera transform is at 0, 0, 0.

There are 3 methods for modifying numerical properties:

  • Left click: Drag the numerical value with the mouse.

  • Double click: Get into digit editing mode, now you can your keyboard left/right cursor buttons to navigate between digits, up/down cursor buttons to raise/lower selected digits value. 

  • Middle button click: You will go number editing mode. Just type the exact value you want to have. 

Just move the camera to this position using its LOCAL TRANSFORM property. Your position might be different depending on your project design. You should see a similar picture on your Multiviewer screen. The “Program” is displaying CHANNEL1 input, which is our CAMERA node. All the other channels have no video input connected yet. 

Duplicating Nodes

If you wish to duplicate a node, right-click on the node and select Duplicate

Using the right click menu, you can also delete, export, copy a node. These copy and export features are useful when configuring multiple engines with similar node settings.

After you duplicate the CAMERA node, just connect its output to CHANNEL2 of MIXER node. Your Multiviewer will display the same view also at the “Preview” output. Now select the CAMERA1 node, and change its transform as:

We just moved the CAMERA1 node 200 cm up. Now the Multiviewer should display an output like this: 

Sending Commands to Nodes

As an example, we are going to send a DO TRANSITION command using the MIXER node. Just select the mixer, then navigate to the “Functions” tab and click on DO TRANSITION button. This will tell the MIXER node to make a dissolve between “Channel1” and “Channel2”. As soon as you send this command, you should see a Dissolve with a duration of 1.0 seconds in your “Program” output. 

MIXER also supports Cut and Wipe Transition types in addition to Dissolve.

After the transition is completed, “Program” and “Preview” outputs are swapped. “Channel1” is shown with green, “Channel2” is shown with red-colored icons in the Multiviewer