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Poorly written extract of source code used to create SceneKit 'bike dude'. Video here https://www.youtube.com/watch?v=UYwLltzNu_w
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| // | |
| // MIT License | |
| // Copyright (c) 2017 Lachlan Hurst | |
| // | |
| // Permission is hereby granted, free of charge, to any person obtaining a copy | |
| // of this software and associated documentation files (the "Software"), to deal | |
| // in the Software without restriction, including without limitation the rights | |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| // copies of the Software, and to permit persons to whom the Software is | |
| // furnished to do so, subject to the following conditions: | |
| // | |
| // The above copyright notice and this permission notice shall be included in all | |
| // copies or substantial portions of the Software. | |
| // | |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| // SOFTWARE. | |
| // | |
| import UIKit | |
| import GLKit | |
| import SceneKit | |
| enum SvgName:String { | |
| case Bars = "BikeAndRider_bars" | |
| case BarTops = "BikeAndRider_barTops" | |
| case Fork = "BikeAndRider_fork" | |
| case Frame = "BikeAndRider_frame" | |
| case Rear = "BikeAndRider_rear" | |
| case Wheel = "BikeAndRider_wheel" | |
| case RiderFoot = "Rider_foot" | |
| case RiderUpperLeg = "Rider_legupper" | |
| case RiderLowerLeg = "Rider_leglower" | |
| case RiderHead = "Rider_head" | |
| case RiderUpperArm = "Rider_upperarm" | |
| case RiderLowerArm = "Rider_lowerarm" | |
| case RiderTorso = "Rider_torso" | |
| } | |
| enum RiderState:String { | |
| case Climb = "Climb" | |
| case Recover = "Recover" | |
| case Sprint = "Sprint" | |
| case Tempo = "Tempo" | |
| case Work = "Work" | |
| } | |
| class BikeAndRiderNode:SvgBasedNode { | |
| var bike:BikeNode? | |
| var rider:RiderNode? | |
| var bikeRotationNode:SCNNode | |
| var isRocking:Bool = false | |
| init(rider:RiderNode, bike:BikeNode) { | |
| self.bike = bike | |
| self.rider = rider | |
| bikeRotationNode = SCNNode() | |
| bikeRotationNode.addChildNode(bike) | |
| var bikeTrans = SCNMatrix4Identity | |
| super.init() | |
| bikeTrans = SCNMatrix4Translate(bikeTrans, -1365 * svgScale, 1050 * svgScale, 0) | |
| rider.position = SCNVector3Make(-1365 * svgScale, 1050 * svgScale, 0) | |
| //bikeTrans = SCNMatrix4Rotate(bikeTrans, -1.0*Float(M_PI_4)/4, 1, 0, 0) | |
| bikeRotationNode.transform = bikeTrans | |
| self.addChildNode(bikeRotationNode) | |
| self.addChildNode(rider) | |
| } | |
| required init(coder aDecoder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| override func update(timeDelta:Float, speed:Float) { | |
| bike?.update(timeDelta, speed: speed) | |
| rider?.update(timeDelta, speed: speed) | |
| var rotationTol:Float = 0.001 | |
| if rider?.state == RiderState.Sprint { | |
| var bikeTrans = SCNMatrix4Identity | |
| bikeTrans = SCNMatrix4Translate(bikeTrans, -1365 * svgScale, 1050 * svgScale, 0) | |
| bikeTrans = SCNMatrix4Rotate(bikeTrans, rider!.torsoSwayRotation * 10, 1, 0, 0) | |
| bikeRotationNode.transform = bikeTrans | |
| isRocking = true | |
| } else if (rider!.torsoSwayRotation < rotationTol * -1 || rider!.torsoSwayRotation > 0.001) && isRocking { | |
| var bikeTrans = SCNMatrix4Identity | |
| bikeTrans = SCNMatrix4Translate(bikeTrans, -1365 * svgScale, 1050 * svgScale, 0) | |
| bikeTrans = SCNMatrix4Rotate(bikeTrans, rider!.torsoSwayRotation * 10, 1, 0, 0) | |
| bikeRotationNode.transform = bikeTrans | |
| } else { | |
| isRocking = false | |
| } | |
| } | |
| } | |
| class RiderNode: SvgBasedNode { | |
| private var _state:RiderState = .Work | |
| private var _oldstate:RiderState = .Work | |
| private var stateChangeCompletedFraction:Float = 0 | |
| private var torsoAngle:Float = 0 | |
| private var torsoPosition:SCNVector3 = SCNVector3Make(191, 90, 0) | |
| private var lastSetTorsoPosition:SCNVector3 = SCNVector3Make(191, 90, 0) | |
| private var lastSetTorsoAngle:Float = 0 | |
| private var lastSetLH:SCNVector3 = SCNVector3Zero | |
| private var lastSetRH:SCNVector3 = SCNVector3Zero | |
| var torsoSwayRotation:Float = 0 | |
| var torsoWidth:Float = 315 | |
| var bike:BikeNode? = nil | |
| var leftLeg:RiderLegNode? = nil | |
| var rightLeg:RiderLegNode? = nil | |
| var torso:SCNNode? = nil | |
| var torsoRotation:SCNNode? = nil | |
| var head:SCNNode? = nil | |
| var leftArm:RiderArmNode? = nil | |
| var rightArm:RiderArmNode? = nil | |
| override init() { | |
| super.init() | |
| torsoPosition = torsoPosition * svgScale | |
| lastSetTorsoPosition = torsoPosition | |
| loadBodyParts() | |
| } | |
| required override init(coder aDecoder: NSCoder) { | |
| super.init(coder: aDecoder) | |
| torsoPosition = torsoPosition * svgScale | |
| lastSetTorsoPosition = torsoPosition | |
| loadBodyParts() | |
| } | |
| var state:RiderState { | |
| get { | |
| return _state | |
| } | |
| set { | |
| _oldstate = _state | |
| _state = newValue | |
| leftLeg?.state = newValue | |
| rightLeg?.state = newValue | |
| stateChangeCompletedFraction = 0 | |
| lastSetTorsoAngle = self.torsoAngle | |
| lastSetTorsoPosition = self.torsoPosition | |
| lastSetLH = self.leftArm!.handConstraint!.targetPosition | |
| lastSetRH = self.rightArm!.handConstraint!.targetPosition | |
| } | |
| } | |
| override func update(timeDelta:Float, speed:Float) { | |
| var distance = speed * timeDelta / 5 | |
| var revolution = distance / 2.105 | |
| var thisRotation = revolution * 2 * Float(M_PI) | |
| if let bike = bike { | |
| var pwc = bike.pedalWorldCoordinates() | |
| self.leftLeg?.footNodeConstraint!.targetPosition = pwc.left | |
| self.rightLeg?.footNodeConstraint!.targetPosition = pwc.right | |
| let maxDist:Float = pwc.left.distance(pwc.right) | |
| let current = pwc.left.y - pwc.right.y | |
| let ratio = current / maxDist | |
| let rotation = -1 * ratio * 0.0174532925 | |
| self.torsoSwayRotation = rotation | |
| var torsoSwayRotation = SCNVector4Make(0, 1, 0, rotation) | |
| var torsoUpDownRotation = SCNVector4Make(0, 0, 1, self.torsoAngle * 0.0174532925) | |
| if _oldstate != _state { | |
| stateChangeCompletedFraction = stateChangeCompletedFraction + timeDelta * 2 | |
| let osRot = lastSetTorsoAngle //torsoAngleForState(_oldstate) | |
| let nsRot = torsoAngleForState(_state) | |
| let stepSize = (nsRot - osRot) * timeDelta * 2 | |
| self.torsoAngle = self.torsoAngle + stepSize | |
| let newTorsoPos = torsoPositionForState(_state) | |
| self.torsoPosition = SCNVector3Lerp(lastSetTorsoPosition, newTorsoPos, stateChangeCompletedFraction) | |
| var oldhwc = (left:lastSetLH ,right:lastSetRH) //bike.handWorldCoordinates(_oldstate) | |
| var newhwc = bike.handWorldCoordinates(_state) | |
| self.leftArm?.handConstraint!.targetPosition = SCNVector3Lerp(oldhwc.left, newhwc.left, stateChangeCompletedFraction) | |
| self.rightArm?.handConstraint!.targetPosition = SCNVector3Lerp(oldhwc.right, newhwc.right, stateChangeCompletedFraction) | |
| if stateChangeCompletedFraction >= 1 { | |
| _oldstate = _state | |
| self.torsoAngle = nsRot | |
| self.torsoPosition = newTorsoPos | |
| self.leftArm?.handConstraint!.targetPosition = newhwc.left | |
| self.rightArm?.handConstraint!.targetPosition = newhwc.right | |
| } | |
| } else { | |
| var newhwc = bike.handWorldCoordinates(_state) | |
| self.leftArm?.handConstraint!.targetPosition = newhwc.left | |
| self.rightArm?.handConstraint!.targetPosition = newhwc.right | |
| } | |
| var trans = SCNMatrix4Identity | |
| trans = SCNMatrix4Rotate(trans, self.torsoAngle * 0.0174532925, 0, 0, 1) | |
| trans = SCNMatrix4Rotate(trans, rotation, 0, 1, 0) | |
| self.torsoRotation?.transform = trans | |
| var transPos = SCNMatrix4Identity | |
| transPos = SCNMatrix4Translate(transPos, torsoPosition.x, torsoPosition.y, torsoPosition.z) | |
| self.torso!.transform = transPos | |
| } | |
| } | |
| func torsoPositionForState(state:RiderState) -> SCNVector3 { | |
| switch state { | |
| case .Tempo, .Work, .Climb, .Recover: | |
| return SCNVector3Make(191, 90, 0) * svgScale | |
| case .Sprint: | |
| return SCNVector3Make(350, 170, 0) * svgScale | |
| } | |
| } | |
| func torsoAngleForState(state:RiderState) -> Float{ | |
| switch state { | |
| case .Tempo: | |
| return 2 | |
| case .Work: | |
| return -3 | |
| case .Sprint: | |
| return -12 | |
| case .Climb: | |
| return 10 | |
| case .Recover: | |
| return 15 | |
| } | |
| } | |
| func loadBodyParts() { | |
| loadTorso() | |
| loadHead() | |
| var lookAtNode = SCNNode()//geometry: SCNSphere(radius: 100)) | |
| lookAtNode.position = SCNVector3Make(2400, 250, 0) * svgScale | |
| self.addChildNode(lookAtNode) | |
| var lac = SCNLookAtConstraint(target: lookAtNode) | |
| lac.gimbalLockEnabled = true | |
| self.head!.constraints = [lac] | |
| let leftLegPosition = SCNNode() | |
| leftLegPosition.position = SCNVector3Make(-43, -90, -120) * svgScale | |
| let leftLeg = RiderLegNode() | |
| leftLeg.rotation = SCNVector4Make(0, 1, 0, 47 * Float(M_PI_2)/180) | |
| leftLegPosition.addChildNode(leftLeg) | |
| torso!.addChildNode(leftLegPosition) | |
| self.leftLeg = leftLeg | |
| let rightLegPosition = SCNNode() | |
| rightLegPosition.position = SCNVector3Make(-43, -90, 120) * svgScale | |
| let rightLeg = RiderLegNode() | |
| rightLeg.rotation = SCNVector4Make(0, 1, 0, -1.0 * 47 * Float(M_PI_2)/180) | |
| rightLegPosition.addChildNode(rightLeg) | |
| torso!.addChildNode(rightLegPosition) | |
| self.rightLeg = rightLeg | |
| let leftArmPosition = SCNNode() | |
| leftArmPosition.position = SCNVector3Make(474, 100, -1 * (torsoWidth / 2.0 + 35)) * svgScale | |
| let leftArm = RiderArmNode() | |
| leftArm.rotation = SCNVector4Make(1, 0, 0, 40 * Float(M_PI_2)/180) | |
| leftArmPosition.addChildNode(leftArm) | |
| torsoRotation!.addChildNode(leftArmPosition) | |
| self.leftArm = leftArm | |
| let rightArmPosition = SCNNode() | |
| rightArmPosition.position = SCNVector3Make(474, 100, (torsoWidth / 2.0 + 35)) * svgScale | |
| let rightArm = RiderArmNode() | |
| rightArm.rotation = SCNVector4Make(1, 0, 0, -1.0 * 40 * Float(M_PI_2)/180) | |
| rightArmPosition.addChildNode(rightArm) | |
| torsoRotation!.addChildNode(rightArmPosition) | |
| self.rightArm = rightArm | |
| } | |
| func loadHead() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderHead] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderHead) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(150 * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| //chamfer.addLineToPoint(CGPointMake(1, 0.5)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(50 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderHead] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 837 * svgScale, 250 * svgScale, 0) | |
| var headPivotNode = SCNNode() | |
| headPivotNode.position = SCNVector3Make(0, 0, 0) | |
| headPivotNode.rotation = SCNVector4Make(0, 1, 0, Float(M_PI_2)) | |
| headPivotNode.addChildNode(pathNode) | |
| var headRotation = SCNNode() | |
| //headRotation.rotation = SCNVector4Make(0, 1, 0, Float(M_PI_2)) | |
| headRotation.addChildNode(headPivotNode) | |
| headRotation = headRotation.flattenedClone() | |
| head = headRotation | |
| var node = SCNNode() | |
| node.position = SCNVector3Make(647, 182, 0) * svgScale | |
| node.addChildNode(headRotation) | |
| torsoRotation!.addChildNode(node) | |
| } | |
| func loadTorso() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderTorso] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderTorso) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(torsoWidth * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0.25)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(torsoWidth/3 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderTorso] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 191 * svgScale, 90 * svgScale, 0) | |
| var nodeR = SCNNode() | |
| nodeR.addChildNode(pathNode) | |
| nodeR = nodeR.flattenedClone() | |
| torsoRotation = nodeR | |
| var node = SCNNode() | |
| //node.position = SCNVector3Make(191, 90, 0) | |
| node.addChildNode(nodeR) | |
| torso = node | |
| self.addChildNode(node) | |
| } | |
| } | |
| class RiderArmNode: SvgBasedNode { | |
| var bike:BikeNode? = nil | |
| var shoulder:SCNNode? = nil | |
| var upperArm:SCNNode? = nil | |
| var lowerArm:SCNNode? = nil | |
| var hand:SCNNode? = nil | |
| var handConstraint:SCNIKConstraint? = nil | |
| override init() { | |
| super.init() | |
| loadArmParts() | |
| } | |
| required init(coder aDecoder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| func loadArmParts() { | |
| loadUpperArm() | |
| loadLowerArm() | |
| var ikConstraint = SCNIKConstraint.inverseKinematicsConstraintWithChainRootNode(shoulder!) | |
| hand!.constraints = [ikConstraint] | |
| ikConstraint.influenceFactor = 1.0 | |
| handConstraint = ikConstraint | |
| //ikConstraint.setMaxAllowedRotationAngle(0, forJoint: hand!) | |
| ikConstraint.setMaxAllowedRotationAngle(70, forJoint: lowerArm!) | |
| ikConstraint.setMaxAllowedRotationAngle(90, forJoint: upperArm!) | |
| //var tConstraint = SCNTransformConstraint(inWorldSpace: true, withBlock: constrainInZ) | |
| //lowerArm?.constraints = [tConstraint] | |
| } | |
| func constrainInZ(node:SCNNode!, t:SCNMatrix4) -> SCNMatrix4 { | |
| //var newMat = SCNMatrix4Translate(transform, 0, 0, -transform.m43) | |
| var point = SCNVector3Make(t.m41, t.m42, t.m43) | |
| var shoulderPoint = shoulder!.convertPosition(SCNVector3Zero, toNode: nil) | |
| var handPoint = hand!.convertPosition(SCNVector3Zero, toNode: nil) | |
| var downPoint = SCNVector3Make(0, -200, 0) | |
| downPoint = shoulder!.convertPosition(downPoint, toNode: nil) | |
| var v1 = downPoint - shoulderPoint | |
| var v2 = downPoint - handPoint | |
| var normal = v1.cross(v2) | |
| normal = normal.normalized() | |
| var v3 = downPoint - point | |
| var v3m = v3 - normal * normal.dot(v3) | |
| var rm = downPoint - v3m | |
| var projected_point = rm | |
| var nt = node.transform | |
| var newMat = SCNMatrix4(m11: t.m11, m12: t.m12, m13: t.m13, m14: t.m14, | |
| m21: t.m21, m22: t.m22, m23: t.m23, m24: t.m24, | |
| m31: t.m31, m32: t.m32, m33: t.m33, m34: t.m34, | |
| m41: projected_point.x, m42: projected_point.y, m43: projected_point.z, m44: t.m44) | |
| /* | |
| var newMat = SCNMatrix4(m11: t.m11, m12: t.m12, m13: t.m13, m14: t.m14, | |
| m21: t.m21, m22: t.m22, m23: t.m23, m24: t.m24, | |
| m31: t.m31, m32: t.m32, m33: t.m33, m34: t.m34, | |
| m41: t.m41, m42: t.m42, m43: t.m43, m44: t.m44) | |
| */ | |
| return newMat | |
| } | |
| func loadLowerArm() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderLowerArm] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderLowerArm) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(45 * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(0.3, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(30 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderLowerArm] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 720 * svgScale, -132 * svgScale, 0 * svgScale) | |
| var node = SCNNode() | |
| node.position = SCNVector3Make(50, -292, 0) * svgScale | |
| node.addChildNode(pathNode) | |
| node = node.flattenedClone() | |
| var handNode = SCNNode() //geometry: SCNBox(width: 30, height: 30, length: 30, chamferRadius: 0)) | |
| handNode.position = SCNVector3Make(340, -90, 0) * svgScale | |
| node.addChildNode(handNode) | |
| hand = handNode | |
| lowerArm = node | |
| upperArm!.addChildNode(node) | |
| } | |
| func loadUpperArm() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderUpperArm] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderUpperArm) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(55 * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(0.3, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(30 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderUpperArm] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 674 * svgScale, 158 * svgScale, 0 * svgScale) | |
| var node = SCNNode() | |
| node.addChildNode(pathNode) | |
| node = node.flattenedClone() | |
| upperArm = node | |
| var shoulderNode = SCNNode() | |
| shoulderNode.addChildNode(node) | |
| shoulder = shoulderNode | |
| addChildNode(shoulderNode) | |
| } | |
| } | |
| class RiderLegNode: SvgBasedNode { | |
| var bike:BikeNode? = nil | |
| var footNode:SCNNode? = nil | |
| var ankleNode:SCNNode? = nil | |
| var upperlegNode:SCNNode? = nil | |
| var lowerlegNode:SCNNode? = nil | |
| var hipNode:SCNNode? = nil | |
| var footNodeConstraint:SCNIKConstraint? = nil | |
| private var _state:RiderState = RiderState.Work | |
| override init() { | |
| super.init() | |
| loadLegParts() | |
| } | |
| required init(coder aDecoder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| var state:RiderState { | |
| get { | |
| return _state | |
| } | |
| set { | |
| _state = newValue | |
| /*if _state == .Sprint { | |
| footNodeConstraint!.setMaxAllowedRotationAngle(0, forJoint: footNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(4, forJoint: ankleNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(10, forJoint: upperlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(50, forJoint: lowerlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(45, forJoint: hipNode!) | |
| } else { | |
| footNodeConstraint!.setMaxAllowedRotationAngle(0, forJoint: footNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(4, forJoint: ankleNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(10, forJoint: upperlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(50, forJoint: lowerlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(55, forJoint: hipNode!) | |
| }*/ | |
| } | |
| } | |
| func loadLegParts() { | |
| var upperLeg = loadUpperLeg() | |
| var ikConstraint = SCNIKConstraint.inverseKinematicsConstraintWithChainRootNode(upperLeg) | |
| footNode!.constraints = [ikConstraint] | |
| footNodeConstraint = ikConstraint | |
| ikConstraint.influenceFactor = 1.0 | |
| footNodeConstraint!.setMaxAllowedRotationAngle(10, forJoint: footNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(4, forJoint: ankleNode!) | |
| //footNodeConstraint!.setMaxAllowedRotationAngle(10, forJoint: upperlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(50, forJoint: lowerlegNode!) | |
| footNodeConstraint!.setMaxAllowedRotationAngle(50, forJoint: hipNode!) | |
| self.state = .Work | |
| //var frontNode = SCNNode() | |
| //frontNode.position = SCNVector3Make(0, 0, -2000) | |
| //var lac = SCNLookAtConstraint(target: frontNode) | |
| //ankleNode!.constraints = [lac] | |
| addChildNode(upperLeg) | |
| } | |
| func loadFoot() -> SCNNode { | |
| //var path = pathFromSvg(.RiderFoot) | |
| //var shape = SCNShape(path: path, extrusionDepth: 100) | |
| var shape = SCNBox(width: 10, height: 10, length: 10, chamferRadius: 0) | |
| var node = SCNNode()//geometry: shape) | |
| node.position = SCNVector3Make(180, 0, 0) * svgScale | |
| footNode = node | |
| return node | |
| } | |
| func loadAnkle() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderFoot] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderFoot) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(90 * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(24 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderFoot] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 460 * svgScale, -710 * svgScale, 0) | |
| pathNode.position = SCNVector3Make(0, 20, 0) * svgScale | |
| var shape = SCNBox(width: 20, height: 20, length: 20, chamferRadius: 0) | |
| var node = SCNNode()//geometry: shape) | |
| node.position = SCNVector3Make(-170, -480, 0) * svgScale | |
| node.addChildNode(pathNode) | |
| node = node.flattenedClone() | |
| ankleNode = node | |
| var subNode = loadFoot() | |
| node.addChildNode(subNode) | |
| return node | |
| } | |
| func loadLowerLeg() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderLowerLeg] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderLowerLeg) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(70 * svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(24 * svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderLowerLeg] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 620 * svgScale, -237 * svgScale, 0) | |
| var shape = SCNBox(width: 30, height: 30, length: 30, chamferRadius: 0) | |
| var node = SCNNode()//geometry: shape) | |
| node.position = SCNVector3Make(470, -208, 0) * svgScale | |
| node.addChildNode(pathNode) | |
| node = node.flattenedClone() | |
| lowerlegNode = node | |
| var subNode = loadAnkle() | |
| node.addChildNode(subNode) | |
| return node | |
| } | |
| func loadUpperLeg() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.RiderUpperLeg] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.RiderUpperLeg) | |
| var pshape = SCNShape(path: path, extrusionDepth: CGFloat(120*svgScale)) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| pshape.chamferMode = SCNChamferMode.Both | |
| pshape.chamferRadius = CGFloat(33.3*svgScale) | |
| pshape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.RiderUpperLeg] = pshape | |
| geom = pshape | |
| } | |
| var pathNode = SCNNode(geometry: geom) | |
| pathNode.pivot = SCNMatrix4Translate(SCNMatrix4Identity, 150*svgScale, -30*svgScale, 0*svgScale) | |
| var shape = SCNBox(width: 40, height: 40, length: 40, chamferRadius: 0) | |
| var node = SCNNode()//geometry: shape) | |
| node.position = SCNVector3Make(0, 0, 0) | |
| upperlegNode = node | |
| var nodeIntermediate = SCNNode()//geometry: pshape) | |
| node.addChildNode(nodeIntermediate) | |
| nodeIntermediate.addChildNode(pathNode) | |
| self.hipNode = nodeIntermediate | |
| var subNode = loadLowerLeg() | |
| nodeIntermediate.addChildNode(subNode) | |
| return node | |
| } | |
| } | |
| class BikeNode: SvgBasedNode { | |
| var barWidth:Float = 380 | |
| var wheelRotation:Float = 0 | |
| var crankRotation:Float = 0 | |
| var celShade:Bool = false | |
| var frontWheel:SCNNode? = nil | |
| var rearWheel:SCNNode? = nil | |
| var bottomBracket:SCNNode? = nil | |
| var leftCrankTip:SCNNode? = nil | |
| var rightCrankTip:SCNNode? = nil | |
| override init() { | |
| super.init() | |
| loadBikeParts() | |
| } | |
| required override init(coder aDecoder: NSCoder) { | |
| super.init(coder: aDecoder) | |
| loadBikeParts() | |
| } | |
| override func update(timeDelta:Float, speed:Float) { | |
| var distance = speed * timeDelta | |
| var revolution = distance / 2.105 | |
| var thisRotation = revolution * 2 * Float(M_PI) | |
| wheelRotation = wheelRotation - thisRotation | |
| crankRotation = crankRotation - thisRotation * (14/53) | |
| frontWheel?.rotation = SCNVector4Make(0, 0, 1, wheelRotation) | |
| rearWheel?.rotation = SCNVector4Make(0, 0, 1, wheelRotation) | |
| bottomBracket?.rotation = SCNVector4Make(0, 0, 1, crankRotation) | |
| } | |
| func loadBikeParts() { | |
| addRearWheel() | |
| addFrontWheel() | |
| addBottomBracket() | |
| var tempFrame = SCNNode() | |
| tempFrame.addChildNode(addFrame()) | |
| tempFrame.addChildNode(addFork()) | |
| var (left, right) = addBars() | |
| tempFrame.addChildNode(left) | |
| tempFrame.addChildNode(right) | |
| tempFrame.addChildNode(addBarTops()) | |
| tempFrame.addChildNode(addRearTriangle()) | |
| self.addChildNode(tempFrame.flattenedClone()) | |
| } | |
| func handWorldCoordinates(riderState:RiderState) -> (left:SCNVector3, right:SCNVector3) { | |
| var res:(SCNVector3,SCNVector3) | |
| switch riderState { | |
| case .Tempo: | |
| let leftZ = -1 * self.barWidth / 2 | |
| let rightZ = self.barWidth / 2 | |
| let x:Float = 1058 | |
| let y:Float = -210 | |
| let left = self.convertPosition(SCNVector3Make(x, y, leftZ)*svgScale, toNode: nil) | |
| let right = self.convertPosition(SCNVector3Make(x, y, rightZ)*svgScale, toNode: nil) | |
| res = (left, right) | |
| case .Work, .Sprint: | |
| let leftZ = -1 * self.barWidth / 2 | |
| let rightZ = self.barWidth / 2 | |
| let x:Float = 1010 | |
| let y:Float = -330 | |
| let left = self.convertPosition(SCNVector3Make(x, y, leftZ)*svgScale, toNode: nil) | |
| let right = self.convertPosition(SCNVector3Make(x, y, rightZ)*svgScale, toNode: nil) | |
| res = (left, right) | |
| case .Climb, .Recover: | |
| let leftZ = -1 * (self.barWidth / 2 - 60) | |
| let rightZ = (self.barWidth / 2 - 60) | |
| let x:Float = 952 | |
| let y:Float = -210 | |
| let left = self.convertPosition(SCNVector3Make(x, y, leftZ)*svgScale, toNode: nil) | |
| let right = self.convertPosition(SCNVector3Make(x, y, rightZ)*svgScale, toNode: nil) | |
| res = (left, right) | |
| } | |
| return res | |
| } | |
| func pedalWorldCoordinates() -> (left:SCNVector3, right:SCNVector3) { | |
| let left = self.leftCrankTip!.convertPosition(SCNVector3Zero, toNode: nil) | |
| let right = self.rightCrankTip!.convertPosition(SCNVector3Zero, toNode: nil) | |
| var res = (left, right) | |
| return res | |
| } | |
| func addBottomBracket() | |
| { | |
| var shape = SCNBox(width: 30, height: 30, length: 100, chamferRadius: 0) | |
| var bbNode = SCNNode()//geometry: shape) | |
| bottomBracket = bbNode | |
| var bbOffset = SCNNode() | |
| bbOffset.addChildNode(bbNode) | |
| bbOffset.position = SCNVector3Make(475, -1 * (1050-240), 0) * svgScale | |
| self.addChildNode(bbOffset) | |
| addCrank() | |
| } | |
| func addCrank() { | |
| var leftOffset = SCNNode() | |
| leftOffset.position = SCNVector3Make(0, 0, -120) * svgScale | |
| var rightOffset = SCNNode() | |
| rightOffset.position = SCNVector3Make(0, 0, 120) * svgScale | |
| bottomBracket!.addChildNode(leftOffset) | |
| bottomBracket!.addChildNode(rightOffset) | |
| var leftCrankTipG = SCNBox(width: 30, height: 30, length: 30, chamferRadius: 0) | |
| var leftCrankTip = SCNNode()//geometry: leftCrankTipG) | |
| leftCrankTip.position = SCNVector3Make(175, 0, 0) * svgScale | |
| leftOffset.addChildNode(leftCrankTip) | |
| self.leftCrankTip = leftCrankTip | |
| var rightCrankTipG = SCNBox(width: 30, height: 30, length: 30, chamferRadius: 0) | |
| var rightCrankTip = SCNNode()//geometry: rightCrankTipG) | |
| rightCrankTip.position = SCNVector3Make(-175, 0, 0) * svgScale | |
| rightOffset.addChildNode(rightCrankTip) | |
| self.rightCrankTip = rightCrankTip | |
| } | |
| func addBarTops() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.BarTops] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.BarTops) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: path, extrusionDepth: CGFloat((barWidth - 40)*svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(7.5 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.BarTops] = shape | |
| geom = shape | |
| } | |
| var node = SCNNode(geometry: geom) | |
| return node | |
| } | |
| func addBars() -> (SCNNode, SCNNode) { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Bars] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.Bars) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shapeL = SCNShape(path: path, extrusionDepth: CGFloat(20 * svgScale)) | |
| shapeL.chamferMode = SCNChamferMode.Both | |
| shapeL.chamferRadius = CGFloat(7.5 * svgScale) | |
| shapeL.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Bars] = shapeL | |
| geom = shapeL | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var nodeL = SCNNode(geometry: geom) | |
| nodeL.position = SCNVector3Make(0, 0, self.barWidth / 2) * svgScale | |
| var nodeR = SCNNode(geometry: geom) | |
| nodeR.position = SCNVector3Make(0, 0, -1 * self.barWidth / 2) * svgScale | |
| return (nodeL, nodeR) | |
| } | |
| func addFork() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Fork] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.Fork) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: path, extrusionDepth: CGFloat(15 * svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(6 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Fork] = shape | |
| geom = shape | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var node = SCNNode(geometry: geom) | |
| node.position = SCNVector3Make(0, 0, 35*svgScale) | |
| return node | |
| } | |
| func addRearTriangle() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Rear] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.Rear) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: path, extrusionDepth: CGFloat(10 * svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(3 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Rear] = shape | |
| geom = shape | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var node = SCNNode(geometry: geom) | |
| node.position = SCNVector3Make(0, 0, 35*svgScale) | |
| return node | |
| } | |
| func addFrame() -> SCNNode { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Frame] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var path = pathFromSvg(.Frame) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: path, extrusionDepth: CGFloat(20 * svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(10 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Frame] = shape | |
| geom = shape | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var node = SCNNode(geometry: geom) | |
| return node | |
| } | |
| func addRearWheel() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Wheel] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var backWheelPath = pathFromSvg(.Wheel) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: backWheelPath, extrusionDepth: CGFloat(30 * svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(10 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Wheel] = shape | |
| geom = shape | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var center:SCNVector3 = SCNVector3Make(0, 0, 0) | |
| var radius:CGFloat = 0 | |
| geom.getBoundingSphereCenter(¢er, radius: &radius) | |
| var wheelNode = SCNNode(geometry: geom) | |
| wheelNode.pivot = SCNMatrix4MakeTranslation(center.x, center.y, center.z) | |
| var wheelNodeOffset = SCNNode() | |
| wheelNodeOffset.addChildNode(wheelNode) | |
| wheelNodeOffset.position = SCNVector3Make((50 - center.x)*svgScale, -731*svgScale, center.z * svgScale) | |
| rearWheel = wheelNode | |
| self.addChildNode(wheelNodeOffset) | |
| } | |
| func addFrontWheel() { | |
| var geom:SCNGeometry | |
| if let existingGeom = GeometryStoreSingleton.sharedInstance[.Wheel] { | |
| geom = existingGeom //existingGeom.copy() as SCNGeometry | |
| } else { | |
| var wheelPath = pathFromSvg(.Wheel) | |
| var chamfer = UIBezierPath() | |
| chamfer.moveToPoint(CGPointMake(0, 1)) | |
| chamfer.addLineToPoint(CGPointMake(1, 0)) | |
| var shape = SCNShape(path: wheelPath, extrusionDepth: CGFloat(30 * svgScale)) | |
| shape.chamferMode = SCNChamferMode.Both | |
| shape.chamferRadius = CGFloat(10 * svgScale) | |
| shape.chamferProfile = chamfer | |
| GeometryStoreSingleton.sharedInstance[.Wheel] = shape | |
| geom = shape | |
| } | |
| if celShade { | |
| applyCelShading(geom) | |
| } | |
| var center:SCNVector3 = SCNVector3Make(0, 0, 0) | |
| var radius:CGFloat = 0 | |
| geom.getBoundingSphereCenter(¢er, radius: &radius) | |
| var wheelNode = SCNNode(geometry: geom) | |
| wheelNode.pivot = SCNMatrix4MakeTranslation(center.x, center.y, center.z) | |
| var wheelNodeOffset = SCNNode() | |
| wheelNodeOffset.addChildNode(wheelNode) | |
| wheelNodeOffset.position = SCNVector3Make((1040 - center.x) * svgScale , -731 * svgScale , center.z * svgScale) | |
| frontWheel = wheelNode | |
| self.addChildNode(wheelNodeOffset) | |
| } | |
| } | |
| class SvgBasedNode:SCNNode { | |
| var svgScale:Float = 1/100 | |
| func update(timeDelta:Float, speed:Float) { | |
| assertionFailure("must override update") | |
| } | |
| func pathFromSvg(svg:SvgName) -> UIBezierPath { | |
| var bundle:NSBundle = NSBundle(forClass: BikeNode.self) | |
| var path = bundle.pathForResource("imageResources/\(svg.rawValue)", ofType: "txt") | |
| var error:NSError? | |
| let fileContents = String(contentsOfFile: path!, encoding: NSUTF8StringEncoding, error: &error) | |
| var svgStringBits:[String] = split(fileContents!) {$0 == " "} | |
| var bp = UIBezierPath() | |
| var lastPoint:CGPoint = CGPointMake(0, 0) | |
| var isFirst = true | |
| var isAbsolute = true | |
| for svgBit in svgStringBits { | |
| if svgBit == "M" { | |
| isAbsolute = true | |
| isFirst = true | |
| } else if svgBit == "m" { | |
| isAbsolute = false | |
| isFirst = true | |
| } else if svgBit == "l" { | |
| isAbsolute = false | |
| } else if svgBit == "L" { | |
| isAbsolute = true | |
| } else if svgBit.lowercaseString == "z" { | |
| bp.closePath() | |
| } else { | |
| let xAndY:[String] = split(svgBit) {$0 == ","} | |
| let x = ((xAndY[0] as NSString).floatValue) | |
| let y = ((xAndY[1] as NSString).floatValue) * -1 | |
| if isFirst { | |
| isFirst = false | |
| let fp = CGPointMake(CGFloat(x * self.svgScale), CGFloat(y * self.svgScale)) | |
| bp.moveToPoint(fp) | |
| lastPoint = fp | |
| } else { | |
| var thisPoint:CGPoint | |
| if isAbsolute { | |
| thisPoint = CGPointMake(CGFloat(x * self.svgScale), CGFloat(y * self.svgScale)) | |
| } else { | |
| thisPoint = CGPointMake(lastPoint.x + CGFloat(x * self.svgScale), lastPoint.y + CGFloat(y * self.svgScale)) | |
| } | |
| bp.addLineToPoint(thisPoint) | |
| lastPoint = thisPoint | |
| } | |
| } | |
| } | |
| return bp | |
| } | |
| func applyCelShading(geom:SCNGeometry) { | |
| var lightingShader = "" + | |
| "\n" + | |
| "float stepmix(float edge0, float edge1, float E, float x) \n" + | |
| "{ \n" + | |
| " float T = clamp(0.5 * (x - edge0 + E) / E, 0.0, 1.0); \n" + | |
| " return mix(edge0, edge1, T); \n" + | |
| "} \n" + | |
| "\n" + | |
| "#pragma body \n" + | |
| "\n" + | |
| "vec3 Eye = vec3(0, 0, 1); \n" + | |
| "vec3 H = normalize(_light.direction + Eye); \n" + | |
| "" + | |
| "const float A = 0.1; \n" + | |
| "const float B = 0.3; \n" + | |
| "const float C = 0.6; \n" + | |
| "const float D = 1.0; \n" + | |
| "\n" + | |
| "float df = max(0.0, dot(_surface.normal, _light.direction)); \n" + | |
| "float E = 0.01; \n" + | |
| "if (df > A - E && df < A + E) df = stepmix(A, B, E, df); \n" + | |
| "else if (df > B - E && df < B + E) df = stepmix(B, C, E, df); \n" + | |
| "else if (df > C - E && df < C + E) df = stepmix(C, D, E, df); \n" + | |
| "else if (df < A) df = 0.0; \n" + | |
| "else if (df < B) df = B; \n" + | |
| "else if (df < C) df = C; \n" + | |
| "else df = D; \n" + | |
| "float sf = max(0.0, dot(_surface.normal, H)); \n" + | |
| "sf = pow(sf, _surface.shininess); \n" + | |
| "sf = step(0.5, sf); \n" + | |
| "" + | |
| "_lightingContribution.specular += sf * _light.intensity.rgb; \n" + | |
| "_lightingContribution.diffuse += df * _light.intensity.rgb; \n" + | |
| "" | |
| var fragmentShader = "" + | |
| "if (dot(_surface.view, _surface.normal) < 0.1) \n " + | |
| "{ \n " + | |
| " _output.color.rgba = vec4(0.0,0.0,0.0,1.0); \n " + | |
| "} \n " + | |
| "" | |
| if let mat = geom.firstMaterial { | |
| mat.litPerPixel = true | |
| mat.shaderModifiers = [SCNShaderModifierEntryPointLightingModel : lightingShader, SCNShaderModifierEntryPointFragment : fragmentShader] | |
| } | |
| } | |
| } | |
| class GeometryStoreSingleton { | |
| class var sharedInstance: GeometryStoreSingleton { | |
| struct Static { | |
| static var instance: GeometryStoreSingleton? | |
| static var token: dispatch_once_t = 0 | |
| } | |
| dispatch_once(&Static.token) { | |
| Static.instance = GeometryStoreSingleton() | |
| } | |
| return Static.instance! | |
| } | |
| var geometries = [SvgName:SCNGeometry]() | |
| subscript(svgName:SvgName) -> SCNGeometry? { | |
| get { | |
| return geometries[svgName] | |
| } | |
| set { | |
| //newValue!.firstMaterial?.lightingModelName = SCNLightingModelPhong | |
| //newValue!.firstMaterial?.lightingModelName = SCNLightingModelBlinn | |
| geometries[svgName] = newValue | |
| } | |
| } | |
| } | |
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