ios - 随着相机移开,Scenekit 阴影逐渐消失
问题描述
我已经在 Scenekit 中设置了逼真的照明,但是当相机远离照明打开的对象时,照明逐渐消失并最终被完全移除。
// LIGHTING
let floorPlane = SCNFloor()
let groundPlane = SCNNode()
let groundMaterial = SCNMaterial()
groundMaterial.lightingModel = .constant
groundMaterial.writesToDepthBuffer = true
groundMaterial.colorBufferWriteMask = []
groundMaterial.isDoubleSided = true
floorPlane.materials = [groundMaterial]
groundPlane.geometry = floorPlane
//
charNode.addChildNode(groundPlane)
// Create a ambient light
ambientLight.light = SCNLight()
ambientLight.light?.shadowMode = .deferred
ambientLight.light?.color = UIColor.white
ambientLight.light?.type = SCNLight.LightType.ambient
ambientLight.position = SCNVector3(x: 0,y: 5,z: 0)
// Create a directional light node with shadow
directLight.light = SCNLight()
directLight.light?.type = SCNLight.LightType.directional
directLight.light?.color = UIColor.white
directLight.light?.castsShadow = true
directLight.light?.automaticallyAdjustsShadowProjection = true
directLight.light?.shadowSampleCount = 64
directLight.light?.shadowRadius = 16
directLight.light?.shadowMode = .deferred
directLight.light?.shadowMapSize = CGSize(width: 2048, height: 2048)
directLight.light?.shadowColor = UIColor.black.withAlphaComponent(0.75)
directLight.position = SCNVector3(x: 0,y: 5,z: 0)
directLight.eulerAngles = SCNVector3(-Float.pi / 2, 0, 0)
// Add the lights to the container
charNode.addChildNode(ambientLight)
charNode.addChildNode(directLight)