SceneKit Namespace

Reference

Important

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The SceneKit namespace provides high-level, scene-graph-based 3D graphics.

Classes

_SCNShaderModifiers	A dictionary of shader snippets.
SCNAccelerationConstraint
SCNAction	Performs actions on a SCNNode, including changes to appearance, geometry, animations, or arbitrary functions.
SCNActionable	Allows actions to be applied.
SCNActionable_Extensions	Extension methods to the ISCNActionable interface to support all the methods from the SCNActionable protocol.
SCNAnimatable	Allows animations to be applied.
SCNAnimatable_Extensions	Extension methods to the ISCNAnimatable interface to support all the methods from the SCNAnimatable protocol.
SCNAnimatableExtensions	Extension methods for ISCNAnimatable.
SCNAnimation
SCNAnimationEvent	Performs a function at a specific time during an animation.
SCNAnimationPlayer
SCNAudioPlayer	Holds a SCNAudioSource or AVAudioNode for use with positional audio.
SCNAudioSource	A reusable audio source for positional audio in SceneKit scenes.
SCNAvoidOccluderConstraint
SCNAvoidOccluderConstraintDelegate
SCNAvoidOccluderConstraintDelegate_Extensions	Extension methods to the ISCNAvoidOccluderConstraintDelegate interface to support all the methods from the SCNAvoidOccluderConstraintDelegate protocol.
SCNBillboardConstraint	Automatically constrains a SCNNode so that it always points to the current rendering node.
SCNBoundingVolume	Functions that define a volume in 3D space.
SCNBox	An SCNGeometry whose faces are all rectangles.
SCNCamera	Specifies a camera, with attributes such as field-of-view and depth-of-view.
SCNCameraController
SCNCameraControllerDelegate
SCNCameraControllerDelegate_Extensions	Extension methods to the ISCNCameraControllerDelegate interface to support all the methods from the SCNCameraControllerDelegate protocol.
SCNCapsule	An SCNGeometry that is a cylinder with capped ends.
SCNCone	An SCNGeometry that is a circular frustum. Or, a party hat.
SCNConstraint	Automatically adjusts the transformation of a node.
SCNCylinder	An SCNGeometry that is a right circular cylinder.
SCNDistanceConstraint
SCNErrorCodeExtensions	Extension methods for the SceneKit.SCNErrorCode enumeration.
SCNFloor	An SCNGeometry that is an infinite plane.
SCNGeometry	Base class for SceneKit geometry objects
SCNGeometryElement	Combines information about vertices and a drawing primitive. Maps to a single drawing command sent to the GPU.
SCNGeometrySource	Provides vertex data that, in conjunction with SCNGeometryElements, define a 3D object.
SCNGeometrySourceSemantic	Enumerates vertex mode attributes.
SCNGeometryTessellator
SCNHitTest	Constants for use with the `options` argument in HitTest(SCNVector3, SCNVector3, SCNHitTestOptions).
SCNHitTestOptions	Configuration options for hit-testing in SCNNode and SCNSceneRenderer
SCNHitTestResult	Information about the SCNNode (if any) located at a specific point or along a ray.
SCNIKConstraint	An SCNConstraint that applies inverse kinematics.
SCNJavaScript	Static class that contains a method to export JavaScript modules.
SCNLayer
SCNLevelOfDetail	Controls alternate geometries rendered at thresholds in either world-space or screen-space.
SCNLight	A light source, used for all SCNLightTypes.
SCNLightAttribute
SCNLightingModel	Constants for use with the P:SceneKit.SCNMaterial.LightingModel property, which defines the way lights and materials combine to produce a particular rendered color.
SCNLightType	Enumerates the types of SCNLight.
SCNLookAtConstraint	An SCNConstraint that orients a node to point towards another node.
SCNMaterial	Specifies the lighting and shading characteristics of the surface of an SCNGeometry.
SCNMaterialProperty	Configures the various properties (such as color and texture) of a SCNMaterial.
SCNMorpher	An animated transformation of an SCNGeometry into one or more target SCNGeometry objects.
SCNNode	A node in the scene graph.
SCNNodeRendererDelegate	Interface defining delegate object functions for adding custom OpenGL drawing code.
SCNNodeRendererDelegate_Extensions	Extension methods to the ISCNNodeRendererDelegate interface to support all the methods from the SCNNodeRendererDelegate protocol.
SCNParticleProperty
SCNParticlePropertyController	Animates a property of the particles emitted by a SCNParticleSystem.
SCNParticleSystem	Emits small sprites whose behaviors are developer-specified.
SCNPhysicsBallSocketJoint	An SCNPhysicsBehavior that allows two SCNPhysicsBody objects to pivot around each other.
SCNPhysicsBehavior	Controls the behavior of one or more SCNPhysicsBody objects.
SCNPhysicsBody	Adds physics simulation to an SCNNode.
SCNPhysicsConeTwistJoint
SCNPhysicsContact	How two SCNPhysicsBody objects are in contact with each other.
SCNPhysicsContactDelegate	Delegate object functions responding to touches between SCNPhysicsBody objects..
SCNPhysicsContactDelegate_Extensions	Extension methods to the ISCNPhysicsContactDelegate interface to support all the methods from the SCNPhysicsContactDelegate protocol.
SCNPhysicsContactEventArgs	Provides data for the DidUpdateContact, E:SceneKit.SCNPhysicsContactEventArgs.DidEndContact and E:SceneKit.SCNPhysicsContactEventArgs.DidUpdateContact events.
SCNPhysicsField	Applies forces to all SCNPhysicsBody objects in a given volume.
SCNPhysicsHingeJoint	An SCNPhysicsBehavior that attaches two SCNPhysicsBody objects along a single axis.
SCNPhysicsShape	A solid volume for a SCNPhysicsBody. Used in collision detection.
SCNPhysicsShapeOptions	Valid keys for the `options` dictionary used with M:SceneKit.SCNPhysicsShape.Create*.
SCNPhysicsShapeOptionsKeys	Defines valid keys for use with the `options` dictionary passed to M:SceneKit.SCNPhysicsShape.Create*.
SCNPhysicsShapeOptionsTypes	Geometrical type associated with SCNPhysicsShapes.
SCNPhysicsSliderJoint	An SCNPhysicsBehavior that connects two SCNPhysicsBody objects, allowing them to slide and rotate around their connecting points.
SCNPhysicsTest	Valid options for use with M:SceneKit.SCNPhysicsWorld.ContactTest*.
SCNPhysicsTestKeys	Contains values that control searching, backface culling, and collision testing.
SCNPhysicsTestSearchModeKeys	Enumerates values that control which collision search results are returned.
SCNPhysicsVehicle	An SCNPhysicsBehavior that simulates the physics of a wheeled vehicle.
SCNPhysicsVehicleWheel	The appearance and physical characteristics of a wheel on a SCNPhysicsVehicle.
SCNPhysicsWorld	A physics simulation that models collisions and other physics-related properties in an SCNScene.
SCNPlane	An SCNGeometry that is a rectangular single-sided finite plane.
SCNProgram	Performs custom rendering using shaders written in OpenGL Shading Language.
SCNProgramDelegate	Delegate object for SCNProgram objects.
SCNProgramDelegate_Extensions	Extension methods to the ISCNProgramDelegate interface to support all the methods from the SCNProgramDelegate protocol.
SCNProgramSemanticOptions	Defines the MappingChannel for use with SetSemantic(NSString, String, SCNProgramSemanticOptions).
SCNPropertyControllers
SCNPyramid	An SCNGeometry that is a right rectangular pyramid.
SCNReferenceNode	A SCNNode that loads its content from a scene file.
SCNRenderer	Renders an SCNScene into an OpenGL context.
SCNRenderingArguments	Defines keys for use with Render(SCNNode, SCNRenderer, NSDictionary) and SetSemantic(NSString, String, SCNProgramSemanticOptions).
SCNRenderingOptions	A DictionaryContainer that defines `options` when instantiating a SCNView.
SCNReplicatorConstraint
SCNScene	The highest-level description of a 3D scene.
SCNSceneExportDelegate	Protocol that defines methods to handle exporting a scene to a file.
SCNSceneExportDelegate_Extensions	Extension methods to the ISCNSceneExportDelegate interface to support all the methods from the SCNSceneExportDelegate protocol.
SCNSceneLoadingOptions	Options for scene loading.
SCNSceneRenderer	Implementation class of the ISCNSceneRenderer interface.
SCNSceneRenderer_Extensions	Extension methods to the ISCNSceneRenderer interface to support all the methods from the SCNSceneRenderer protocol.
SCNSceneRendererDelegate	Delegate object for the SCNRenderer class, defines methods reflects rendering events.
SCNSceneRendererDelegate_Extensions	Extension methods to the ISCNSceneRendererDelegate interface to support all the methods from the SCNSceneRendererDelegate protocol.
SCNSceneSource	Reads scene-defining data from a file or NSData object.
SCNSceneSourceLoadErrors	Enumerates error types that can occur while loading SCNSceneSources.
SCNSceneSourceLoading	Options for creating and loading SCNScene objects.
SCNSceneSourceProperties	Metadata keys associated with a scene file. Used with GetProperty(NSString).
SCNShadable	Implementation of ISCNShadable.
SCNShadable_Extensions	Extension methods to the ISCNShadable interface to support all the methods from the SCNShadable protocol.
SCNShaderModifiers	A DictionaryContainer containing options for shaders.
SCNShape	An SCNGeometry created from a 2D path, optionally extruded into three dimensions.
SCNSkinner	Accesses the scene graph in support of skeletal animation.
SCNSliderConstraint
SCNSphere	An SCNGeometry that is a sphere.
SCNTechnique	Provides additional drawing passes, each of which applies a shader.
SCNTechniqueSupport	Implementation of ISCNTechniqueSupport that simply holds a reference to the SCNTechnique.
SCNText	An SCNGeometry based on a string, optionally extruded into three dimensions.
SCNTimingFunction
SCNTorus	An SCNGeometry that is a ring-shaped solid.
SCNTransaction	Allows a set of modifications to be applied atomically.
SCNTransformConstraint	An SCNConstraint that executes a function specifying a change in transformation (position, rotation, and scale) to a node or nodes.
SCNTube	An SCNGeometry that is a cylinder with a hole along its central axis.
SCNView	A UIView that renders SCNScenes.
SCNView.SCNViewAppearance	Appearance class for objects of type SCNView.

Structs

SCNMatrix4	A 4x4 matrix.
SCNQuaternion	Represents a quaternion and contains methods that operate on them.
SCNVector3	A 3-component vector.
SCNVector4	A 4-component vector.

Interfaces

ISCNActionable	Interface representing the required methods (if any) of the protocol SCNActionable.
ISCNAnimatable	Interface representing the required methods (if any) of the protocol SCNAnimatable.
ISCNAnimationProtocol
ISCNAvoidOccluderConstraintDelegate	Interface representing the required methods (if any) of the protocol SCNAvoidOccluderConstraintDelegate.
ISCNBoundingVolume	Interface representing the required methods (if any) of the protocol SCNBoundingVolume.
ISCNBufferStream	Interface for managing a custom shader's Metal buffer.
ISCNCameraControlConfiguration
ISCNCameraControllerDelegate	Interface representing the required methods (if any) of the protocol SCNCameraControllerDelegate.
ISCNNodeRendererDelegate	Interface representing the required methods (if any) of the protocol SCNNodeRendererDelegate.
ISCNPhysicsContactDelegate	Interface representing the required methods (if any) of the protocol SCNPhysicsContactDelegate.
ISCNProgramDelegate	Interface representing the required methods (if any) of the protocol SCNProgramDelegate.
ISCNSceneExportDelegate	Interface representing the required methods (if any) of the protocol SCNSceneExportDelegate.
ISCNSceneRenderer	Interface representing the required methods (if any) of the protocol SCNSceneRenderer.
ISCNSceneRendererDelegate	Interface representing the required methods (if any) of the protocol SCNSceneRendererDelegate.
ISCNShadable	Interface representing the required methods (if any) of the protocol SCNShadable.
ISCNTechniqueSupport	Interface representing the required methods (if any) of the protocol SCNTechniqueSupport.

Enums

SCNActionTimingMode	Enumerates rate curves for use with SCNAction objects.
SCNAnimationImportPolicy	Enumerates animation import policies.
SCNAntialiasingMode	Enumerates values that control antialiasing behavior.
SCNBillboardAxis	Enumeration of axes' locks available to nodes constrained by SCNBillboardConstraint.
SCNBlendMode	Enumeration of the ways SceneKit can blend colors from a material with colors that already exist in the render target.
SCNBufferFrequency	Enumerates values that control whether handlers are invoked per frame, per node per frame, or per node per frame per shaded renderable.
SCNCameraProjectionDirection
SCNChamferMode	Enumerates the ways a SCNShape can be chamfered; on its front, back, or both sides.
SCNColorMask
SCNCullMode	Enumeration determining which faces of a surface SCNMaterial are rendered.
SCNDebugOptions	Enumerates debug overlay options.
SCNErrorCode
SCNFillMode
SCNFilterMode	Enumeration of texture filtering modes.
SCNGeometryPrimitiveType	Enumeration of 2D geometry primitives.
SCNGeometrySourceSemantics	Enumerates semantics for geometry data.
SCNHitTestSearchMode
SCNInteractionMode
SCNMorpherCalculationMode	Enumeration of valid interpolation formulae for CalculationMode.
SCNMovabilityHint	Enumerates values that tell SceneKit whether nodes are expected to move over time.
SCNNodeFocusBehavior	Enumerates the focusable states of a SCNNode.
SCNParticleBirthDirection	Enumerates the initial direction of particles emitted by a SCNParticleSystem.
SCNParticleBirthLocation	Enumeration of the initial location of particles emitted by a SCNParticleSystem.
SCNParticleBlendMode	Enumeration of the ways in which overlapping particles emitted by a SCNParticleSystem will be rendered.
SCNParticleEvent	Enumeration of lifecycle events for particles emitted by a SCNParticleSystem. Used with HandleEvent(SCNParticleEvent, NSString[], SCNParticleEventHandler).
SCNParticleImageSequenceAnimationMode	Enumeration of playing modes for SCNParticleSystem's whose particles are rendered as a sequence of images.
SCNParticleInputMode	Enumerates how a particle property is animated (over the lifetime of the particle, as the particle travels over a distance, or based on another property). Used with InputMode.
SCNParticleModifierStage	Enumerates moments when the modifier specified in AddModifier(NSString[], SCNParticleModifierStage, SCNParticleModifierHandler) should be applied.
SCNParticleOrientationMode	Enumerates the alignment of particles emitted by a SCNParticleSystem. Used with OrientationMode.
SCNParticleSortingMode	Enumeration specifying the order in which particles emitted by a T:SceneKit.SCNParticleScene are rendered.
SCNPhysicsBodyType	An enumeration specifying whether the SCNPhysicsBody is dynamic, kinematic, or static. Used with CreateBody(SCNPhysicsBodyType, SCNPhysicsShape).
SCNPhysicsCollisionCategory	Defaults for the collision properties of a SCNPhysicsBody.
SCNPhysicsFieldScope	Enumerates values specifying whether an SCNPhysicsField affects objects inside or outside its border.
SCNPhysicsSearchMode	Enumerates values that control which physics search results are returned.
SCNPhysicsShapeType	Enumeration of categories for SCNPhysicsShapes.
SCNReferenceLoadingPolicy	Enumerates possible loading policies for SCNReferenceNode objects.
SCNRenderingApi	Enumerates values that signify the Metal or OpenGLES2 APIs.
SCNSceneSourceStatus	Enumerates the states of an SCNSceneSource.
SCNShadowMode	Enumeration controlling when shadows are calculated.
SCNTessellationSmoothingMode
SCNTransparencyMode	Enumerates techniques for calculating transparency.
SCNWrapMode	Enumerates texture-wrapping techniques.

Delegates

SCNActionNodeWithElapsedTimeHandler	Completion handler used with CustomAction(Double, SCNActionNodeWithElapsedTimeHandler).
SCNAnimationDidStartHandler
SCNAnimationDidStopHandler
SCNAnimationEventHandler	Completion handler for use with Create(nfloat, SCNAnimationEventHandler).
SCNBindingHandler	Completion handler used with HandleBinding(String, SCNBindingHandler).
SCNBufferBindingHandler
SCNFieldForceEvaluator	Delegate for the CustomField(SCNFieldForceEvaluator) method.
SCNNodeHandler
SCNNodePredicate	Delegate for use with EnumerateChildNodes(SCNNodePredicate).
SCNParticleEventHandler	Completion handler for use with HandleEvent(SCNParticleEvent, NSString[], SCNParticleEventHandler).
SCNParticleModifierHandler	Delegate used as the `handler` in AddModifier(NSString[], SCNParticleModifierStage, SCNParticleModifierHandler).
SCNSceneExportProgressHandler	Continuation handler that SceneKit repeatedly calls when exporting a scene.
SCNSceneSourceFilter	Delegate that tests objects in the scene for inclusion.
SCNSceneSourceStatusHandler	Callback used to reflect progress during execution of SceneFromOptions(SCNSceneLoadingOptions, SCNSceneSourceStatusHandler).
SCNTransformConstraintHandler	Delegate used in calls to Create(Boolean, SCNTransformConstraintHandler).

Remarks

Scene Kit is a framework for 3D graphics, based on hierarchical scene-graphs.

The fundamental classes in Scene Kit are SCNScene, which holds all content, and T:CoreGraphics.SceneKit.SCNView, a UIView that renders an SCNScene.

An SCNScene has a RootNode property of type SCNNode. SCNNode's have P:SceneKit.SCNNode.ChildNodes and implement System.Collections.Generic.IEnumerable`1<class MonoTouch.SceneKit.SCNNode>. Properties of SCNNode include Camera, of type SCNCamera, Geometry, of type SCNGeometry, and Light, of type SCNLight.

Additionally, every SCNNode has a Position property that defines a location in space relative to the SCNNode's ParentNode and P:SceneKit.SCNNode.FirstMaterial and P:SceneKit.SCNNode.Materials that create the SCNNode's appearance.

The following example shows a minimal Scene Kit view:

public MySceneView (RectangleF frame) : base(frame)
{
	BackgroundColor = UIColor.Blue;
	this.Scene = new SCNScene ();

	var material = new SCNMaterial ();
	material.Diffuse.Contents = UIImage.FromFile("textureX.png");
	material.Specular.Contents = UIColor.Gray;
	material.LocksAmbientWithDiffuse = true;

	Scene.RootNode.Geometry = new SCNBox {
		Width = 1,
		Height = 1,
		Length = 1,
		ChamferRadius = 0.2f,
		FirstMaterial = material
	};

	Scene.RootNode.Light = new SCNLight {
		LightType = SCNLightType.Ambient,
		Color = UIColor.Gray,
	};

	var camera = new SCNCamera ();
	var cameraNode = new SCNNode () {
		Camera = camera,
		Position = new SCNVector3 (3, 3, 3),
		Constraints = new SCNConstraint[] { SCNLookAtConstraint.Create(Scene.RootNode) }
	};
	Scene.RootNode.AddChildNode (cameraNode);
}

Geometry

All geometry in SceneKit is described by subclasses of SCNGeometry:

SCNCapsule	A pill-shaped capsule with adjustable end caps
SCNCone	A cone whose top can be truncated
SCNBox	A rectangular box.
SCNCylinder	A cylinder.
SCNFloor	An infinite plane with the ability to reflect the geometry above it.
SCNPlane	A one-sided rectangle.
SCNPyramid	A tetrahedron.
SCNShape	A 2D shape that has been extruded into the 3rd dimension.
SCNSphere	A ball.
SCNText	Extruded text.
SCNTorus	A donut shape.
SCNTube	An uncapped cylinder.

In addition, SceneKit can load entire scenes from .DAE files with the FromFile method.

Finally, developers can create custom geometry using the M:SceneKit.SCNGeometry.Create(SceneKit.SCNGeometrySource[], SceneKit.SCNGeometryElement[]* method with arrays of appropriate SCNGeometrySource and SCNGeometryElement objects. The following shows the creation of a custom pyramid:

//Lower-left
var a = new SCNVector3(-1, -1, 0);
//Upper-right
var b = new SCNVector3(1, 1, 0);

var halfX = (c.X + a.X) / 2;
var halfY = (c.Y + a.Y) / 2;
var halfZ = (c.Z + a.Z) / 2;

var b = new SCNVector3(a.X, c.Y, halfZ);
var d = new SCNVector3(c.X, a.Y, halfZ);
//Elevate the midpoint so that it's clearly a pyramid
var midPoint = new SCNVector3(halfX, halfY, halfZ + 1.0);

//The vertices of the geometry
var locs = new [] {
	a, b, c, d, midPoint
};
var locSource = SCNGeometrySource.FromVertices(locs);

//Note that this relies on the ordering of locs above
//and it defines triangles (could be triangle strips, etc.)
var indices = new [] {
	//Triangles are defined counter-clockwise!
	4, 1, 0,
	1, 4, 2,
	2, 4, 3,
	3, 4, 0
};


var idxArray = new byte[indices.Length][];
for(int i = 0; i < idxArray.Length; i++)
{
	idxArray[i] = BitConverter.GetBytes(indices[i]);
}
var idxData = NSData.FromArray(idxArray.SelectMany(id => id).ToArray());

//Note that this relies on indices defining triangles
var element = SCNGeometryElement.FromData(idxData, SCNGeometryPrimitiveType.Triangles, indices.Length / 3, sizeof(int));

//Normals are relative to geometry
var normals = new [] {
	new SCNVector3(0, 0, 1),
	new SCNVector3(0, 0, 1),
	new SCNVector3(0, 0, 1),
	new SCNVector3(0, 0, 1),
	new SCNVector3(0, 0, 1),
};;
var normSource = SCNGeometrySource.FromNormals(normals);

//These texture coords will cause the texture to wrap 
var txCoords = new [] {
	new CGPoint(-1, -1),
	new CGPoint(-1, 1),
	new CGPoint(1, 1),
	new CGPoint(1, -1)
};

var txCoordsSource = SCNGeometrySource.FromTextureCoordinates(txCoords);

var geometry = SCNGeometry.Create(new [] { locSource, normSource, txCoordsSource }, new [] { element });

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