Hello, I'm trying to understand physics by placing objects but I have a positioning problem. In fact, I create a floor with static physics and then a static block as well. I position the two elements at position 0 but the block crosses the ground by half.
Why?
this is my playground
import SceneKit
import PlaygroundSupport
// create a scene view with an empty scene
var sceneView = SCNView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
var scene = SCNScene()
sceneView.scene = scene
// start a live preview of that view
PlaygroundPage.current.liveView = sceneView
// default lighting
sceneView.autoenablesDefaultLighting = true
sceneView.allowsCameraControl = true
sceneView.debugOptions = [.showPhysicsShapes]
// a camera
var cameraNode = SCNNode()
cameraNode.camera = SCNCamera()
cameraNode.position = SCNVector3(x: 0, y: 0, z: 3)
scene.rootNode.addChildNode(cameraNode)
// Make floor node
let floorNode = SCNNode()
let floor = SCNFloor()
floor.reflectivity = 0.25
floorNode.geometry = floor
floorNode.physicsBody = SCNPhysicsBody(type: .static, shape: nil)
scene.rootNode.addChildNode(floorNode)
// Add box
let cube = SCNNode(geometry: SCNBox(width: 1, height: 1, length: 1, chamferRadius: 0))
cube.geometry?.firstMaterial?.diffuse.contents = UIColor.red
cube.position = SCNVector3(0, 0, 0)
cube.physicsBody = SCNPhysicsBody(type: .static, shape:SCNPhysicsShape(geometry: cube.geometry!, options: nil))
scene.rootNode.addChildNode(cube)
thanks !
