Is it possible to place a UI Canvas onto a 3D object? I'd like to create a cash dispenser machine (for example) with a user interface that can be interacted with. Then there will be keycode locks on doors, touchscreen computers, etc.
How can I display a canvas as a 3D object in the 3D world and still have it interactable? Placing it on a Plane would be good enough.
Yes, it is possible. Change Canvas Render Mode to World Space then drag your Camera into the Event Camera slot. You will have to find select the Canvas, press F in Scene View to find it then move it to the place you want it to be.
You need to use World Space UI. Can place anywhere in scene but make sure use can view it in order to interact.
To learn more, watch this video : https://blogs.unity3d.com/2014/06/30/unity-4-6-new-ui-world-space-canvas/
Related
I am using Unity 5 and I started to make a menu scene. When I made the canvas, all of values under the Rect Transform component are locked and it says "some values driven by Canvas." The only thing I can change is the z position when using the gizmo in the editor. I can't reset the position or anything. Why is this happening?
This means that the canvas's canvas component has it's render mode set to Screen space - overlay. This forces it to be the size of the screen. Change it to World Space and it will allow you to resize it and move it around.
Changing the Render mode is not an ideal solution; neither is Overlay mode the reason why this is happening at all. World Space is just a render mode that changes the way your whole UI behaves and would mean a whole different set up and a whole lot more work just to get a child UI object to move independently.
Here is the description of what World Space is for from the Unity site:
In this render mode, the Canvas will behave as any other object in the
scene. The size of the Canvas can be set manually using its Rect
Transform, and UI elements will render in front of or behind other
objects in the scene based on 3D placement. This is useful for UIs
that are meant to be a part of the world. This is also known as a
“diegetic interface”.
The Rect Transform usually gets locked because it is a child of another Canvas Object which controls its Transforms. The way to fix this is to overwrite it by adding a “Layout Element” component to it. From there you can configure it to work the way you like and it can have transforms independent of the Parent UI Object.
For full details, see this Unity support page: https://support.unity3d.com/hc/en-us/articles/115000179163-How-to-overwrite-Width-and-Height-values-that-are-driven-by-a-Layout-Group-in-runtime-
Canvas is depend on game tab in your window panel.
Adjust panel by use of close tab or resize panel or doc game panel.
It will help you make default 800 X 600 canvas.
I've built a basic scene for SceneKit, including several SCNNodes with geometries, SCNLights, and an SCNCamera. I would now like to add functionality whereby the point of view shifts between different camera positions when the user taps on the screen.
What is the best way to achieve this? Should I include several SCNCameras in the scene and switch sceneView.pointOfView between them? Or should I rather update the position (and orientation) of a single camera. Also, how can I specify the transition path from moving from the old to the new camera position, i.e. use animation for the transition.
changing the pointOfView of the view is the easiest way. But if you want to control the path you will have to move the camera yourself. You can do that with SCNAction or by using CoreAnimation explicit or implicit animations.
I am trying to achieve an effect similar to one of the cardboard app examples that Google has put out with their cardboard app called the 'exhibit'. I have a 3D object that I want to rotate using device orientation control. Right now with just the device orientation control, I can view the 3D object but when I turn around, the camera rotates (it seems) causing the object to fall out of view until I turn all the way back around to where it was in the beginning. In other words the camera seems to rotate in its axis as I look around. What I want is to be able to rotate the object as I turn around.
Kinda like this example http://threejs.org/examples/#misc_controls_orbit except I want to rotate using device orientation control.
Any idea how I can incorporate this feature?
Thank you for your assistance.
The answer to my own question for future seekers is to replace camera in
controls = new THREE.DeviceOrientationControls(camera, true);
with the 3D object you are trying to rotate.
I am trying to create a small container where the user will be able to move the mouse/drag his finger in order to control the renderer DOM element, in another container. The problem is that TrackballControls.js, a controller script included with THREE.js, maps the controls to event.clientX and event.clientY, so when I drag with in the small container I created, I don't see the desired effect. I was wondering what a proper way to map the input from a small area and effect the renderer element as if the user had the entire rendering area to give input?
The reason I need to do this is because I am integrating a CSS3D view into a normal, 2D page, and the mobile experience is awful if I do not disable to touch controls on TrackballControls.js- the user will be scrolling down the page as normal, and when he hits the 3D div, the 3D controls take over and the user can no longer scroll out of that area back to the rest of the page content. So I need a little small area where the user can spin, zoom, and pan my 3D visualization but then be able to scroll on the rest of it to escape.
Thanks!
I'd like to create some mechanism that provides a text overlay on top of my 3D scene at certain times (such as when clicking a mouse button for instance.)
I'm going over the tutorials on github and notice things like the THREE.TextGeometry class. Using it I can put 3D text in the scene, but it may be a bit more than I need-- what I'm really after is a way to put some text on, say, a black background, overlay it on the scene, then move it out of the way when done. Does anyone know of good ways to do this in three.js? (If the THREE.TextGeometry class is a good way to do this that's fine, I'm just not sure how to do the overlay bit.)
Use HTML. It's super easy and powerful especially if you just need an overlay. With CSS, you can also achieve things like semi-transparent background. If you want to have it "blend" to scene, i.e. have perspective etc. you can use THREE.CSS3DRenderer which will transform divs based on camera you supply.