SceneKit: Simple 3D game Scene setup

Scenekit is the framework Apple uses to develop casual 3D games, unlike the underlying OpenGL libraries, where you can quickly see the actual 3D scene effects with very little code. Here's a quick chat about what you need to do to build a 3D game scene.

First you have to use other 3D modeling tools to generate the 3D model you need, with a DAE or SCN, and a texture picture attached.

You can import the three-dimensional model file along with the texture picture into Xcode, here's an example

Some children's shoes may not know how to open the scene graph interface, just click on the next line of the local button to the left of the box button:

You can add lights, cameras, and other elements attached to the Scnnode in the scene diagram interface:

Scenekit also comes with some simple 3D geometry classes, such as spheres, cones, and so on. You can combine them into a more complex 3D form and put them into a 3D scene. I'll give you some examples later.

Below we can import the scene into the view:

let"art.scnassets/hero.scn")letastruetrue

For the sake of fun, let's add a few simple geometries to the scene:

Func Boxnode ()->scnnode{Let box = Scnbox (width:Ten, Height:Ten, Length:Ten, Chamferradius:1) Let Boxnode = Scnnode (geometry:box) Boxnode. Geometry?. Firstmaterial?. Diffuse. Contents= Uicolor. Browncolor() Boxnode. Position= SCNVector3 (x:0,y:Ten,Z: - -) Return Boxnode}mainscene. RootNode. Addchildnode(Boxnode ())

Similar to several other simple geometries, the settings are the same.

In the end, we scenekit also built in a class scntext that directly transforms the string into a geometry, so we can easily generate 3D text in the game scene.

Func createstartingtext ()->scnnode{Let Starttext = Scntext (string:"Giant panda pig Patty", Extrusiondepth:5) Starttext. Chamferradius=0.5Starttext. Flatness=0.3Starttext. Font= Uifont (Name:"Copperplate", Size: -) Starttext. Firstmaterial?. Specular. Contents= Uicolor. Bluecolor() Starttext. Firstmaterial?. Diffuse. Contents= Uicolor. Yellowcolor() Starttext. Firstmaterial?. shininess=0.4Let Textnode = Scnnode (geometry:starttext) textnode. scale= SCNVector3 (x:0.75,y:0.75,Z:0.75) Textnode. Position= SCNVector3 (x:0,y: -,Z: - -) Return Textnode}

Finally run the app to see the effect:

It's pretty good, isn't it?]

SceneKit: Simple 3D game Scene setup