In Shetchfab.com you can add a 3d background environment for your 3d objects.
Im making this page where i show an .x3d object in a tag frame using x3dom.
<x3d height='500px'>
<scene id="mainScene">
<Inline id="inlineBox" nameSpaceName="dcm" url="juicecarton.x3d" />
</scene>
</x3d>
How do i add a background like Sketchfab with the rotating environment ?
Can someone help me out with this?
The rotating background is often called a "cubemap" (although that name can be used for both, the kind of texture and the way it is being used / visualized in 3D).
In X3DOM, you should be able to use a background like this (inside the Scene element):
<Background id='back1'
backUrl='"./ocean_3_back.jpg"' bottomUrl='"./ocean_3_bottom.jpg"'
frontUrl='"./ocean_3_front.jpg"' leftUrl='"./ocean_3_left.jpg"'
rightUrl='"./ocean_3_right.jpg"' topUrl='"./ocean_3_top.jpg"'>
</Background>
There's also an X3DOM node for integrating such texture maps to obtain a reflecting material, it's called "ComposedCubeMapTexture":
https://doc.x3dom.org/author/CubeMapTexturing/ComposedCubeMapTexture.html
I didn't find a live online example, but it should be straightforward to get one working - here's some code:
https://github.com/x3dom/x3dom/blob/master/test/regression-suite/test/cases/cubemap/cubemap.html
Result should look like this:
http://testing.x3dom.org/test/reference/cubemap_0.png
Related
I'm trying to use a sprite sheet in my background animation. The sprite sheet is made up of multiple objects of varying sizes and shapes. I want the sizes/shapes to be used consecutively in a "floating" type backgound animation. I have no clue how to start the code. Can't seem to find anything like this on the Stack Overflow site. Ps. I'm not trying to animate one (1) object (such as a running man). Please HELP!!
I tried using JS code for animating bubbles and just replacing with my script.png. It didn't work. The example background that I'm trying to duplicate is found at https://lusion.co - If you page down until you reach about the third page, you will find a colored background with floating objects, along with a scattered light and fog. Lusion used a sprite sheet for the objects. I have a copy of the sprite sheet. They seem to hide their code, so I can't use their site for learning.
May I have a 2D layer for UI, Text, Buttons, etc over the 3D scene in ThreeJS?
Ideally something like engine from PixiJS inside ThreeJS? I've seen PixiJS offers some 3D features so why not combine both libraries in something super-powerful? I just do not want to place any HTML Dom elements over WebGL canvas as this will probably slow down performance on Mobile devices.
One way to solve this issue is to implement the UI as screen space sprites like demonstrated in the following official example (check out how the red sprites are rendered):
https://threejs.org/examples/webgl_sprites
The idea is to render them with a separate orthographic camera and an additional call of WebGLRenderer.render(). Besides, instances of THREE.Sprite do support raycasting which is of course useful when implementing interaction.
Building up on Mugen87's answer, you can also use THREE.Shape to make visual containers adapted to the user screen size :
https://threejs.org/docs/#api/en/extras/core/Shape
You can use THREE.Shape to make mesh-based text, is illustrated in this example :
https://threejs.org/examples/?q=text#webgl_geometry_text_shapes
You should also have a look at three-mesh-ui, an add-on for building mesh-based user interface with three.js :
https://github.com/felixmariotto/three-mesh-ui
I would like to recreate bent country labels according to the area of the country.
In d3 (or SVG) I can construct a polyline and then use a textpath to have text along it. Example: https://www.w3.org/TR/SVG2/images/text/text-path-startoffset.svg
Is it possible in Cesium to do something similar?
In Leaflet it is implemented like that: http://makinacorpus.github.io/Leaflet.TextPath/
There's no native support for that in the current version of Cesium. It may be mentioned on a wishlist or on a roadmap somewhere, but there are no short-term plans that I know of to add it to Cesium.
Even so, you may be able to find a workaround. For example, SVGs can be used as texturemap image sources in Cesium, so you could possibly use D3 to produce curved text on-the-fly and load the results into a Cesium billboard image or even a Cesium Globe inlay image. It would probably take some experimenting to figure out how to actually wire this up and how well it would work.
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.
I am trying to create a cube using three.js for a project. I need to add text to vertices and at different points inside the cube. Any idea how this can be done?
For some basic code examples of using Sprite objects in Three.js, check out:
http://stemkoski.github.com/Three.js/Sprites.html
And for an easy way to create images that contain text to use as your sprite textures, check out the sample code at:
http://stemkoski.github.com/Three.js/Texture-From-Canvas.html
I think a combination of these two ideas will achieve what you are looking to do.
If you want to have label-style texts, so that the text begins at a specific point, but is always oriented with the camera and easily readable no matter the camera position, you can use sprites. (example of canvas-created text label sprites: http://i.imgur.com/e9I68xD.jpg - here they are rendered on a separate pass to that they are never obscured by the scene but you can do it on the same pass)
If that's what you are looking for, I'd suggest first checking the Sprites examples, and learn to attach some static image as a sprite to correct position in the scene. After you get that working, you modify the code so that you generate the text to an image canvas using standard Javascript Canvas functions, and using that image as the sprite.