| public UpdateLightingWithIntensities ( float intensities ) : void | ||
| intensities | float | |
| return | void | |
public override void PresentStep (int index, PresentationViewController presentationViewController)
{
switch (index) {
case 0:
// Hide everything (in case the user went backward)
for (var i = 1; i < 4; i++) {
var teapot = GroundNode.FindChildNode ("Teapot" + i, true);
teapot.Opacity = 0.0f;
}
break;
case 1:
// Move the camera and adjust the clipping plane
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 3;
presentationViewController.CameraNode.Position = new SCNVector3 (0, 0, 200);
presentationViewController.CameraNode.Camera.ZFar = 500.0f;
SCNTransaction.Commit ();
break;
case 2:
// Revert to original position
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1;
presentationViewController.CameraNode.Position = new SCNVector3 (0, 0, 0);
presentationViewController.CameraNode.Camera.ZFar = 100.0f;
SCNTransaction.Commit ();
break;
case 3:
var numberNodes = new SCNNode[] { AddNumberNode ("64k", -17),
AddNumberNode ("6k", -9),
AddNumberNode ("3k", -1),
AddNumberNode ("1k", 6.5f),
AddNumberNode ("256", 14)
};
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1;
// Move the camera and the text
presentationViewController.CameraHandle.Position = new SCNVector3 (presentationViewController.CameraHandle.Position.X, presentationViewController.CameraHandle.Position.Y + 6, presentationViewController.CameraHandle.Position.Z);
TextManager.TextNode.Position = new SCNVector3 (TextManager.TextNode.Position.X, TextManager.TextNode.Position.Y + 6, TextManager.TextNode.Position.Z);
// Show the remaining resolutions
for (var i = 0; i < 5; i++) {
var numberNode = numberNodes [i];
numberNode.Position = new SCNVector3 (numberNode.Position.X, 7, -5);
var teapot = GroundNode.FindChildNode ("Teapot" + i, true);
teapot.Opacity = 1.0f;
teapot.Rotation = new SCNVector4 (0, 0, 1, (float)(Math.PI / 4));
teapot.Position = new SCNVector3 ((i - 2) * 8, 5, teapot.Position.Z);
}
SCNTransaction.Commit ();
break;
case 4:
presentationViewController.ShowsNewInSceneKitBadge (true);
// Remove the numbers
RemoveNumberNodes ();
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1;
// Add some text and code
TextManager.SetSubtitle ("SCNLevelOfDetail");
TextManager.AddCode ("#var lod1 = SCNLevelOfDetail.#CreateWithWorldSpaceDistance# (aGeometry, aDistance); \n"
+ "geometry.#LevelsOfDetail# = new SCNLevelOfDetail { lod1, lod2, ..., lodn };#");
// Animation the merge
for (int i = 0; i < 5; i++) {
var teapot = GroundNode.FindChildNode ("Teapot" + i, true);
teapot.Opacity = i == 0 ? 1.0f : 0.0f;
teapot.Rotation = new SCNVector4 (0, 0, 1, 0);
teapot.Position = new SCNVector3 (0, -5, teapot.Position.Z);
}
// Move the camera and the text
presentationViewController.CameraHandle.Position = new SCNVector3 (presentationViewController.CameraHandle.Position.X, presentationViewController.CameraHandle.Position.Y - 3, presentationViewController.CameraHandle.Position.Z);
TextManager.TextNode.Position = new SCNVector3 (TextManager.TextNode.Position.X, TextManager.TextNode.Position.Y - 3, TextManager.TextNode.Position.Z);
SCNTransaction.Commit ();
break;
case 5:
presentationViewController.ShowsNewInSceneKitBadge (false);
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 3;
// Change the lighting to remove the front light and rise the main light
presentationViewController.UpdateLightingWithIntensities (new float[] { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.3f });
presentationViewController.RiseMainLight (true);
// Remove some text
TextManager.FadeOutText (SlideTextManager.TextType.Title);
TextManager.FadeOutText (SlideTextManager.TextType.Subtitle);
TextManager.FadeOutText (SlideTextManager.TextType.Code);
SCNTransaction.Commit ();
// Retrieve the main teapot
var maintTeapot = GroundNode.FindChildNode ("Teapot0", true);
// The distances to use for each LOD
var distances = new float [4] { 30, 50, 90, 150 };
// An array of SCNLevelOfDetail instances that we will build
var levelsOfDetail = new SCNLevelOfDetail[4];
for (var i = 1; i < 5; i++) {
var teapotNode = GroundNode.FindChildNode ("Teapot" + i, true);
var teapot = teapotNode.Geometry;
// Unshare the material because we will highlight the different levels of detail with different colors in the next step
teapot.FirstMaterial = (SCNMaterial)teapot.FirstMaterial.Copy ();
// Build the SCNLevelOfDetail instance
var levelOfDetail = SCNLevelOfDetail.CreateWithWorldSpaceDistance (teapot, distances [i - 1]);
levelsOfDetail [i - 1] = levelOfDetail;
}
maintTeapot.Geometry.LevelsOfDetail = levelsOfDetail;
// Duplicate and move the teapots
var startTime = CAAnimation.CurrentMediaTime ();
var delay = 0.2;
var rowCount = 9;
var columnCount = 12;
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 0;
// Change the far clipping plane to be able to see far away
presentationViewController.CameraNode.Camera.ZFar = 1000.0;
for (var j = 0; j < columnCount; j++) {
for (var i = 0; i < rowCount; i++) {
// Clone
var clone = maintTeapot.Clone ();
maintTeapot.ParentNode.AddChildNode (clone);
// Animate
var animation = CABasicAnimation.FromKeyPath ("position");
animation.Additive = true;
animation.Duration = 1.0;
animation.To = NSValue.FromVector (new SCNVector3 ((i - rowCount / 2.0f) * 12.0f, 5 + (columnCount - j) * 15.0f, 0));
animation.From = NSValue.FromVector (new SCNVector3 (0, 0, 0));
animation.BeginTime = startTime + delay; // desynchronize
// Freeze at the end of the animation
animation.RemovedOnCompletion = false;
animation.FillMode = CAFillMode.Forwards;
clone.AddAnimation (animation, new NSString ("cloneAnimation"));
// Animate the hidden property to automatically show the node when the position animation starts
animation = CABasicAnimation.FromKeyPath ("hidden");
animation.Duration = delay + 0.01;
animation.FillMode = CAFillMode.Both;
animation.From = new NSNumber (1);
animation.To = new NSNumber (0);
clone.AddAnimation (animation, new NSString ("cloneAnimation2"));
delay += 0.05;
}
}
SCNTransaction.Commit ();
// Animate the camera while we duplicate the nodes
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1.0 + rowCount * columnCount * 0.05;
var position = presentationViewController.CameraHandle.Position;
presentationViewController.CameraHandle.Position = new SCNVector3 (position.X, position.Y + 5, position.Z);
presentationViewController.CameraPitch.Rotation = new SCNVector4 (1, 0, 0, presentationViewController.CameraPitch.Rotation.W - ((float)(Math.PI / 4) * 0.1f));
SCNTransaction.Commit ();
break;
case 6:
// Highlight the levels of detail with colors
var teapotChild = GroundNode.FindChildNode ("Teapot0", true);
var colors = new NSColor[] { NSColor.Red, NSColor.Orange, NSColor.Yellow, NSColor.Green };
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1;
for (var i = 0; i < 4; i++) {
var levelOfDetail = teapotChild.Geometry.LevelsOfDetail [i];
levelOfDetail.Geometry.FirstMaterial.Multiply.Contents = colors [i];
}
SCNTransaction.Commit ();
break;
}
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
// Set the slide's title and subtitle
TextManager.SetTitle("Scene Graph");
TextManager.SetSubtitle("Summary");
break;
case 1:
// A node that will help visualize the position of the stars
WireframeBoxNode = SCNNode.Create();
WireframeBoxNode.Rotation = new SCNVector4(0, 1, 0, (float)(Math.PI / 4));
WireframeBoxNode.Geometry = SCNBox.Create(1, 1, 1, 0);
WireframeBoxNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/box_wireframe", "png"));
WireframeBoxNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
WireframeBoxNode.Geometry.FirstMaterial.DoubleSided = true; // double sided
// Sun
SunNode = SCNNode.Create();
SunNode.Position = new SCNVector3(0, 30, 0);
ContentNode.AddChildNode(SunNode);
SunNode.AddChildNode((SCNNode)WireframeBoxNode.Copy());
// Earth-rotation (center of rotation of the Earth around the Sun)
var earthRotationNode = SCNNode.Create();
SunNode.AddChildNode(earthRotationNode);
// Earth-group (will contain the Earth, and the Moon)
EarthGroupNode = SCNNode.Create();
EarthGroupNode.Position = new SCNVector3(15, 0, 0);
earthRotationNode.AddChildNode(EarthGroupNode);
// Earth
EarthNode = (SCNNode)WireframeBoxNode.Copy();
EarthNode.Position = new SCNVector3(0, 0, 0);
EarthGroupNode.AddChildNode(EarthNode);
// Rotate the Earth around the Sun
var animation = CABasicAnimation.FromKeyPath("rotation");
animation.Duration = 10.0f;
animation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
earthRotationNode.AddAnimation(animation, new NSString("earth rotation around sun"));
// Rotate the Earth
animation = CABasicAnimation.FromKeyPath("rotation");
animation.Duration = 1.0f;
animation.From = NSValue.FromVector(new SCNVector4(0, 1, 0, 0));
animation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
EarthNode.AddAnimation(animation, new NSString("earth rotation"));
break;
case 2:
// Moon-rotation (center of rotation of the Moon around the Earth)
var moonRotationNode = SCNNode.Create();
EarthGroupNode.AddChildNode(moonRotationNode);
// Moon
MoonNode = (SCNNode)WireframeBoxNode.Copy();
MoonNode.Position = new SCNVector3(5, 0, 0);
moonRotationNode.AddChildNode(MoonNode);
// Rotate the moon around the Earth
animation = CABasicAnimation.FromKeyPath("rotation");
animation.Duration = 1.5f;
animation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
moonRotationNode.AddAnimation(animation, new NSString("moon rotation around earth"));
// Rotate the moon
animation = CABasicAnimation.FromKeyPath("rotation");
animation.Duration = 1.5f;
animation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
MoonNode.AddAnimation(animation, new NSString("moon rotation"));
break;
case 3:
// Add geometries (spheres) to represent the stars
SunNode.Geometry = SCNSphere.Create(2.5f);
EarthNode.Geometry = SCNSphere.Create(1.5f);
MoonNode.Geometry = SCNSphere.Create(0.75f);
// Add a textured plane to represent Earth's orbit
var earthOrbit = SCNNode.Create();
earthOrbit.Opacity = 0.4f;
earthOrbit.Geometry = SCNPlane.Create(31, 31);
earthOrbit.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/orbit", "png"));
earthOrbit.Geometry.FirstMaterial.Diffuse.MipFilter = SCNFilterMode.Linear;
earthOrbit.Rotation = new SCNVector4(1, 0, 0, -(float)(Math.PI / 2));
earthOrbit.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
SunNode.AddChildNode(earthOrbit);
break;
case 4:
// Add a halo to the Sun (a simple textured plane that does not write to depth)
SunHaloNode = SCNNode.Create();
SunHaloNode.Geometry = SCNPlane.Create(30, 30);
SunHaloNode.Rotation = new SCNVector4(1, 0, 0, Pitch * (float)(Math.PI / 180.0f));
SunHaloNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/sun-halo", "png"));
SunHaloNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
SunHaloNode.Geometry.FirstMaterial.WritesToDepthBuffer = false; // do not write to depth
SunHaloNode.Opacity = 0.2f;
SunNode.AddChildNode(SunHaloNode);
// Add materials to the stars
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-diffuse-mini", "jpg"));
EarthNode.Geometry.FirstMaterial.Emission.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-emissive-mini", "jpg"));
EarthNode.Geometry.FirstMaterial.Specular.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-specular-mini", "jpg"));
MoonNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/moon", "jpg"));
SunNode.Geometry.FirstMaterial.Multiply.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/sun", "jpg"));
SunNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/sun", "jpg"));
SunNode.Geometry.FirstMaterial.Multiply.Intensity = 0.5f;
SunNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant;
SunNode.Geometry.FirstMaterial.Multiply.WrapS =
SunNode.Geometry.FirstMaterial.Diffuse.WrapS =
SunNode.Geometry.FirstMaterial.Multiply.WrapT =
SunNode.Geometry.FirstMaterial.Diffuse.WrapT = SCNWrapMode.Repeat;
EarthNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse =
MoonNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse =
SunNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse = true;
EarthNode.Geometry.FirstMaterial.Shininess = 0.1f;
EarthNode.Geometry.FirstMaterial.Specular.Intensity = 0.5f;
MoonNode.Geometry.FirstMaterial.Specular.Contents = NSColor.Gray;
// Achieve a lava effect by animating textures
animation = CABasicAnimation.FromKeyPath("contentsTransform");
animation.Duration = 10.0f;
var animationTransform1 = CATransform3D.MakeTranslation(0, 0, 0);
animationTransform1 = animationTransform1.Concat(CATransform3D.MakeScale(3, 3, 3));
var animationTransform2 = CATransform3D.MakeTranslation(1, 0, 0);
animationTransform2 = animationTransform1.Concat(CATransform3D.MakeScale(3, 3, 3));
animation.From = NSValue.FromCATransform3D(animationTransform1);
animation.To = NSValue.FromCATransform3D(animationTransform2);
animation.RepeatCount = float.MaxValue;
SunNode.Geometry.FirstMaterial.Diffuse.AddAnimation(animation, new NSString("sun-texture"));
animation = CABasicAnimation.FromKeyPath("contentsTransform");
animation.Duration = 30.0f;
animationTransform1 = CATransform3D.MakeTranslation(0, 0, 0);
animationTransform1 = animationTransform1.Concat(CATransform3D.MakeScale(5, 5, 5));
animationTransform2 = CATransform3D.MakeTranslation(1, 0, 0);
animationTransform2 = animationTransform1.Concat(CATransform3D.MakeScale(5, 5, 5));
animation.From = NSValue.FromCATransform3D(animationTransform1);
animation.To = NSValue.FromCATransform3D(animationTransform2);
animation.RepeatCount = float.MaxValue;
SunNode.Geometry.FirstMaterial.Multiply.AddAnimation(animation, new NSString("sun-texture2"));
break;
case 5:
// We will turn off all the lights in the scene and add a new light
// to give the impression that the Sun lights the scene
var lightNode = SCNNode.Create();
lightNode.Light = SCNLight.Create();
lightNode.Light.Color = NSColor.Black; // initially switched off
lightNode.Light.LightType = SCNLightType.Omni;
SunNode.AddChildNode(lightNode);
// Configure attenuation distances because we don't want to light the floor
lightNode.Light.SetAttribute(new NSNumber(20), SCNLightAttribute.AttenuationEndKey);
lightNode.Light.SetAttribute(new NSNumber(19.5), SCNLightAttribute.AttenuationStartKey);
// Animation
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
lightNode.Light.Color = NSColor.White; // switch on
presentationViewController.UpdateLightingWithIntensities(new float[] { 0.0f }); //switch off all the other lights
SunHaloNode.Opacity = 0.5f; // make the halo stronger
SCNTransaction.Commit();
break;
}
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
// Hide everything (in case the user went backward)
for (var i = 1; i < 4; i++)
{
var teapot = GroundNode.FindChildNode("Teapot" + i, true);
teapot.Opacity = 0.0f;
}
break;
case 1:
// Move the camera and adjust the clipping plane
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 3;
presentationViewController.CameraNode.Position = new SCNVector3(0, 0, 200);
presentationViewController.CameraNode.Camera.ZFar = 500.0f;
SCNTransaction.Commit();
break;
case 2:
// Revert to original position
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
presentationViewController.CameraNode.Position = new SCNVector3(0, 0, 0);
presentationViewController.CameraNode.Camera.ZFar = 100.0f;
SCNTransaction.Commit();
break;
case 3:
var numberNodes = new SCNNode[] { AddNumberNode("64k", -17),
AddNumberNode("6k", -9),
AddNumberNode("3k", -1),
AddNumberNode("1k", 6.5f),
AddNumberNode("256", 14) };
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
// Move the camera and the text
presentationViewController.CameraHandle.Position = new SCNVector3(presentationViewController.CameraHandle.Position.X, presentationViewController.CameraHandle.Position.Y + 6, presentationViewController.CameraHandle.Position.Z);
TextManager.TextNode.Position = new SCNVector3(TextManager.TextNode.Position.X, TextManager.TextNode.Position.Y + 6, TextManager.TextNode.Position.Z);
// Show the remaining resolutions
for (var i = 0; i < 5; i++)
{
var numberNode = numberNodes [i];
numberNode.Position = new SCNVector3(numberNode.Position.X, 7, -5);
var teapot = GroundNode.FindChildNode("Teapot" + i, true);
teapot.Opacity = 1.0f;
teapot.Rotation = new SCNVector4(0, 0, 1, (float)(Math.PI / 4));
teapot.Position = new SCNVector3((i - 2) * 8, 5, teapot.Position.Z);
}
SCNTransaction.Commit();
break;
case 4:
presentationViewController.ShowsNewInSceneKitBadge(true);
// Remove the numbers
RemoveNumberNodes();
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
// Add some text and code
TextManager.SetSubtitle("SCNLevelOfDetail");
TextManager.AddCode("#var lod1 = SCNLevelOfDetail.#CreateWithWorldSpaceDistance# (aGeometry, aDistance); \n"
+ "geometry.#LevelsOfDetail# = new SCNLevelOfDetail { lod1, lod2, ..., lodn };#");
// Animation the merge
for (int i = 0; i < 5; i++)
{
var teapot = GroundNode.FindChildNode("Teapot" + i, true);
teapot.Opacity = i == 0 ? 1.0f : 0.0f;
teapot.Rotation = new SCNVector4(0, 0, 1, 0);
teapot.Position = new SCNVector3(0, -5, teapot.Position.Z);
}
// Move the camera and the text
presentationViewController.CameraHandle.Position = new SCNVector3(presentationViewController.CameraHandle.Position.X, presentationViewController.CameraHandle.Position.Y - 3, presentationViewController.CameraHandle.Position.Z);
TextManager.TextNode.Position = new SCNVector3(TextManager.TextNode.Position.X, TextManager.TextNode.Position.Y - 3, TextManager.TextNode.Position.Z);
SCNTransaction.Commit();
break;
case 5:
presentationViewController.ShowsNewInSceneKitBadge(false);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 3;
// Change the lighting to remove the front light and rise the main light
presentationViewController.UpdateLightingWithIntensities(new float[] { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.3f });
presentationViewController.RiseMainLight(true);
// Remove some text
TextManager.FadeOutText(SlideTextManager.TextType.Title);
TextManager.FadeOutText(SlideTextManager.TextType.Subtitle);
TextManager.FadeOutText(SlideTextManager.TextType.Code);
SCNTransaction.Commit();
// Retrieve the main teapot
var maintTeapot = GroundNode.FindChildNode("Teapot0", true);
// The distances to use for each LOD
var distances = new float[] { 30, 50, 90, 150 };
// An array of SCNLevelOfDetail instances that we will build
var levelsOfDetail = new SCNLevelOfDetail[4];
for (var i = 1; i < 5; i++)
{
var teapotNode = GroundNode.FindChildNode("Teapot" + i, true);
var teapot = teapotNode.Geometry;
// Unshare the material because we will highlight the different levels of detail with different colors in the next step
teapot.FirstMaterial = (SCNMaterial)teapot.FirstMaterial.Copy();
// Build the SCNLevelOfDetail instance
var levelOfDetail = SCNLevelOfDetail.CreateWithWorldSpaceDistance(teapot, distances [i - 1]);
levelsOfDetail [i - 1] = levelOfDetail;
}
maintTeapot.Geometry.LevelsOfDetail = levelsOfDetail;
// Duplicate and move the teapots
var startTime = CAAnimation.CurrentMediaTime();
var delay = 0.2;
var rowCount = 9;
var columnCount = 12;
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0;
// Change the far clipping plane to be able to see far away
presentationViewController.CameraNode.Camera.ZFar = 1000.0;
for (var j = 0; j < columnCount; j++)
{
for (var i = 0; i < rowCount; i++)
{
// Clone
var clone = maintTeapot.Clone();
maintTeapot.ParentNode.AddChildNode(clone);
// Animate
var animation = CABasicAnimation.FromKeyPath("position");
animation.Additive = true;
animation.Duration = 1.0;
animation.To = NSValue.FromVector(new SCNVector3((i - rowCount / 2.0f) * 12.0f, 5 + (columnCount - j) * 15.0f, 0));
animation.From = NSValue.FromVector(new SCNVector3(0, 0, 0));
animation.BeginTime = startTime + delay; // desynchronize
// Freeze at the end of the animation
animation.RemovedOnCompletion = false;
animation.FillMode = CAFillMode.Forwards;
clone.AddAnimation(animation, new NSString("cloneAnimation"));
// Animate the hidden property to automatically show the node when the position animation starts
animation = CABasicAnimation.FromKeyPath("hidden");
animation.Duration = delay + 0.01;
animation.FillMode = CAFillMode.Both;
animation.From = new NSNumber(1);
animation.To = new NSNumber(0);
clone.AddAnimation(animation, new NSString("cloneAnimation2"));
delay += 0.05;
}
}
SCNTransaction.Commit();
// Animate the camera while we duplicate the nodes
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0 + rowCount * columnCount * 0.05;
var position = presentationViewController.CameraHandle.Position;
presentationViewController.CameraHandle.Position = new SCNVector3(position.X, position.Y + 5, position.Z);
presentationViewController.CameraPitch.Rotation = new SCNVector4(1, 0, 0, presentationViewController.CameraPitch.Rotation.W - ((float)(Math.PI / 4) * 0.1f));
SCNTransaction.Commit();
break;
case 6:
// Highlight the levels of detail with colors
var teapotChild = GroundNode.FindChildNode("Teapot0", true);
var colors = new NSColor[] { NSColor.Red, NSColor.Orange, NSColor.Yellow, NSColor.Green };
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
for (var i = 0; i < 4; i++)
{
var levelOfDetail = teapotChild.Geometry.LevelsOfDetail [i];
levelOfDetail.Geometry.FirstMaterial.Multiply.Contents = colors [i];
}
SCNTransaction.Commit();
break;
}
}
public override void PresentStep (int index, PresentationViewController presentationViewController)
{
switch (index) {
case 0:
// Set the slide's title and subtitle
TextManager.SetTitle ("Scene Graph");
TextManager.SetSubtitle ("Summary");
break;
case 1:
// A node that will help visualize the position of the stars
WireframeBoxNode = SCNNode.Create ();
WireframeBoxNode.Rotation = new SCNVector4 (0, 1, 0, (float)(Math.PI / 4));
WireframeBoxNode.Geometry = SCNBox.Create (1, 1, 1, 0);
WireframeBoxNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("SharedTextures/box_wireframe", "png"));
WireframeBoxNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
WireframeBoxNode.Geometry.FirstMaterial.DoubleSided = true; // double sided
// Sun
SunNode = SCNNode.Create ();
SunNode.Position = new SCNVector3 (0, 30, 0);
ContentNode.AddChildNode (SunNode);
SunNode.AddChildNode ((SCNNode)WireframeBoxNode.Copy ());
// Earth-rotation (center of rotation of the Earth around the Sun)
var earthRotationNode = SCNNode.Create ();
SunNode.AddChildNode (earthRotationNode);
// Earth-group (will contain the Earth, and the Moon)
EarthGroupNode = SCNNode.Create ();
EarthGroupNode.Position = new SCNVector3 (15, 0, 0);
earthRotationNode.AddChildNode (EarthGroupNode);
// Earth
EarthNode = (SCNNode)WireframeBoxNode.Copy ();
EarthNode.Position = new SCNVector3 (0, 0, 0);
EarthGroupNode.AddChildNode (EarthNode);
// Rotate the Earth around the Sun
var animation = CABasicAnimation.FromKeyPath ("rotation");
animation.Duration = 10.0f;
animation.To = NSValue.FromVector (new SCNVector4 (0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
earthRotationNode.AddAnimation (animation, new NSString ("earth rotation around sun"));
// Rotate the Earth
animation = CABasicAnimation.FromKeyPath ("rotation");
animation.Duration = 1.0f;
animation.From = NSValue.FromVector (new SCNVector4 (0, 1, 0, 0));
animation.To = NSValue.FromVector (new SCNVector4 (0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
EarthNode.AddAnimation (animation, new NSString ("earth rotation"));
break;
case 2:
// Moon-rotation (center of rotation of the Moon around the Earth)
var moonRotationNode = SCNNode.Create ();
EarthGroupNode.AddChildNode (moonRotationNode);
// Moon
MoonNode = (SCNNode)WireframeBoxNode.Copy ();
MoonNode.Position = new SCNVector3 (5, 0, 0);
moonRotationNode.AddChildNode (MoonNode);
// Rotate the moon around the Earth
animation = CABasicAnimation.FromKeyPath ("rotation");
animation.Duration = 1.5f;
animation.To = NSValue.FromVector (new SCNVector4 (0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
moonRotationNode.AddAnimation (animation, new NSString ("moon rotation around earth"));
// Rotate the moon
animation = CABasicAnimation.FromKeyPath ("rotation");
animation.Duration = 1.5f;
animation.To = NSValue.FromVector (new SCNVector4 (0, 1, 0, (float)(Math.PI * 2)));
animation.RepeatCount = float.MaxValue;
MoonNode.AddAnimation (animation, new NSString ("moon rotation"));
break;
case 3:
// Add geometries (spheres) to represent the stars
SunNode.Geometry = SCNSphere.Create (2.5f);
EarthNode.Geometry = SCNSphere.Create (1.5f);
MoonNode.Geometry = SCNSphere.Create (0.75f);
// Add a textured plane to represent Earth's orbit
var earthOrbit = SCNNode.Create ();
earthOrbit.Opacity = 0.4f;
earthOrbit.Geometry = SCNPlane.Create (31, 31);
earthOrbit.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/orbit", "png"));
earthOrbit.Geometry.FirstMaterial.Diffuse.MipFilter = SCNFilterMode.Linear;
earthOrbit.Rotation = new SCNVector4 (1, 0, 0, -(float)(Math.PI / 2));
earthOrbit.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
SunNode.AddChildNode (earthOrbit);
break;
case 4:
// Add a halo to the Sun (a simple textured plane that does not write to depth)
SunHaloNode = SCNNode.Create ();
SunHaloNode.Geometry = SCNPlane.Create (30, 30);
SunHaloNode.Rotation = new SCNVector4 (1, 0, 0, Pitch * (float)(Math.PI / 180.0f));
SunHaloNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/sun-halo", "png"));
SunHaloNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant; // no lighting
SunHaloNode.Geometry.FirstMaterial.WritesToDepthBuffer = false; // do not write to depth
SunHaloNode.Opacity = 0.2f;
SunNode.AddChildNode (SunHaloNode);
// Add materials to the stars
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-diffuse-mini", "jpg"));
EarthNode.Geometry.FirstMaterial.Emission.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-emissive-mini", "jpg"));
EarthNode.Geometry.FirstMaterial.Specular.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-specular-mini", "jpg"));
MoonNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/moon", "jpg"));
SunNode.Geometry.FirstMaterial.Multiply.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/sun", "jpg"));
SunNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/sun", "jpg"));
SunNode.Geometry.FirstMaterial.Multiply.Intensity = 0.5f;
SunNode.Geometry.FirstMaterial.LightingModelName = SCNLightingModel.Constant;
SunNode.Geometry.FirstMaterial.Multiply.WrapS =
SunNode.Geometry.FirstMaterial.Diffuse.WrapS =
SunNode.Geometry.FirstMaterial.Multiply.WrapT =
SunNode.Geometry.FirstMaterial.Diffuse.WrapT = SCNWrapMode.Repeat;
EarthNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse =
MoonNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse =
SunNode.Geometry.FirstMaterial.LocksAmbientWithDiffuse = true;
EarthNode.Geometry.FirstMaterial.Shininess = 0.1f;
EarthNode.Geometry.FirstMaterial.Specular.Intensity = 0.5f;
MoonNode.Geometry.FirstMaterial.Specular.Contents = NSColor.Gray;
// Achieve a lava effect by animating textures
animation = CABasicAnimation.FromKeyPath ("contentsTransform");
animation.Duration = 10.0f;
var animationTransform1 = CATransform3D.MakeTranslation (0, 0, 0);
animationTransform1 = animationTransform1.Concat (CATransform3D.MakeScale (3, 3, 3));
var animationTransform2 = CATransform3D.MakeTranslation (1, 0, 0);
animationTransform2 = animationTransform1.Concat (CATransform3D.MakeScale (3, 3, 3));
animation.From = NSValue.FromCATransform3D (animationTransform1);
animation.To = NSValue.FromCATransform3D (animationTransform2);
animation.RepeatCount = float.MaxValue;
SunNode.Geometry.FirstMaterial.Diffuse.AddAnimation (animation, new NSString ("sun-texture"));
animation = CABasicAnimation.FromKeyPath ("contentsTransform");
animation.Duration = 30.0f;
animationTransform1 = CATransform3D.MakeTranslation (0, 0, 0);
animationTransform1 = animationTransform1.Concat (CATransform3D.MakeScale (5, 5, 5));
animationTransform2 = CATransform3D.MakeTranslation (1, 0, 0);
animationTransform2 = animationTransform1.Concat (CATransform3D.MakeScale (5, 5, 5));
animation.From = NSValue.FromCATransform3D (animationTransform1);
animation.To = NSValue.FromCATransform3D (animationTransform2);
animation.RepeatCount = float.MaxValue;
SunNode.Geometry.FirstMaterial.Multiply.AddAnimation (animation, new NSString ("sun-texture2"));
break;
case 5:
// We will turn off all the lights in the scene and add a new light
// to give the impression that the Sun lights the scene
var lightNode = SCNNode.Create ();
lightNode.Light = SCNLight.Create ();
lightNode.Light.Color = NSColor.Black; // initially switched off
lightNode.Light.LightType = SCNLightType.Omni;
SunNode.AddChildNode (lightNode);
// Configure attenuation distances because we don't want to light the floor
lightNode.Light.SetAttribute (new NSNumber (20), SCNLightAttribute.AttenuationEndKey);
lightNode.Light.SetAttribute (new NSNumber (19.5), SCNLightAttribute.AttenuationStartKey);
// Animation
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1;
lightNode.Light.Color = NSColor.White; // switch on
presentationViewController.UpdateLightingWithIntensities (new float[] { 0.0f }); //switch off all the other lights
SunHaloNode.Opacity = 0.5f; // make the halo stronger
SCNTransaction.Commit ();
break;
}
}
public override void PresentStep (int index, PresentationViewController presentationViewController)
{
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1.0f;
switch (index) {
case 0:
// Set the slide's title and add some code
TextManager.SetTitle ("Materials");
TextManager.AddBulletAtLevel ("Diffuse", 0);
TextManager.AddBulletAtLevel ("Ambient", 0);
TextManager.AddBulletAtLevel ("Specular and shininess", 0);
TextManager.AddBulletAtLevel ("Normal", 0);
TextManager.AddBulletAtLevel ("Reflective", 0);
TextManager.AddBulletAtLevel ("Emission", 0);
TextManager.AddBulletAtLevel ("Transparent", 0);
TextManager.AddBulletAtLevel ("Multiply", 0);
break;
case 1:
EarthNode.Opacity = 1.0f;
presentationViewController.UpdateLightingWithIntensities (new float[] { 1 });
break;
case 2:
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Blue;
TextManager.HighlightBullet (0);
ShowCodeExample ("#material.#diffuse.contents# = [NSColor blueColor];#", null, null);
break;
case 3:
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-diffuse", "jpg"));
ShowCodeExample ("#material.#diffuse.contents# =#", "earth-diffuse-mini", "jpg");
break;
case 4:
EarthNode.Geometry.FirstMaterial.Ambient.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-diffuse", "jpg"));
EarthNode.Geometry.FirstMaterial.Ambient.Intensity = 1;
TextManager.HighlightBullet (1);
ShowCodeExample ("#material.#ambient#.contents =#", "earth-diffuse-mini", "jpg");
presentationViewController.UpdateLightingWithIntensities (LightIntensities);
break;
case 5:
EarthNode.Geometry.FirstMaterial.Shininess = 0.1f;
EarthNode.Geometry.FirstMaterial.Specular.Contents = NSColor.White;
TextManager.HighlightBullet (2);
ShowCodeExample ("#material.#specular#.contents = [NSColor whiteColor];#", null, null);
break;
case 6:
EarthNode.Geometry.FirstMaterial.Specular.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-specular", "jpg"));
ShowCodeExample ("#material.#specular#.contents =#", "earth-specular-mini", "jpg");
break;
case 7:
EarthNode.Geometry.FirstMaterial.Normal.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-bump", "png"));
EarthNode.Geometry.FirstMaterial.Normal.Intensity = 1.3f;
TextManager.HighlightBullet (3);
ShowCodeExample ("#material.#normal#.contents =#", "earth-bump", "png");
break;
case 8:
EarthNode.Geometry.FirstMaterial.Reflective.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-reflective", "jpg"));
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.7f;
EarthNode.Geometry.FirstMaterial.Specular.Intensity = 0.0f;
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 2.0f;
SCNTransaction.AnimationTimingFunction = CAMediaTimingFunction.FromName (CAMediaTimingFunction.EaseInEaseOut);
CameraOriginalPosition = presentationViewController.CameraHandle.Position;
presentationViewController.CameraHandle.Position = presentationViewController.CameraHandle.ConvertPositionToNode (new SCNVector3 (6, 0, -10.11f), presentationViewController.CameraHandle.ParentNode);
SCNTransaction.Commit ();
TextManager.HighlightBullet (4);
ShowCodeExample ("material.#reflective#.contents =", "earth-reflective", "jpg");
break;
case 9:
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 1.0f;
SCNTransaction.AnimationTimingFunction = CAMediaTimingFunction.FromName (CAMediaTimingFunction.EaseInEaseOut);
presentationViewController.CameraHandle.Position = CameraOriginalPosition;
SCNTransaction.Commit ();
break;
case 10:
EarthNode.Geometry.FirstMaterial.Emission.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/earth-emissive", "jpg"));
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.5f;
TextManager.HighlightBullet (5);
ShowCodeExample ("material.#emission#.contents =", "earth-emissive-mini2", "jpg");
break;
case 11:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 1.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.1f;
ShowCodeExample (null, null, null);
presentationViewController.UpdateLightingWithIntensities (new float[] { 0.01f }); // keeping the intensity non null avoids an unnecessary shader recompilation
break;
case 12:
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
presentationViewController.UpdateLightingWithIntensities (LightIntensities);
break;
case 13:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.0f;
CloudsNode.Opacity = 0.9f;
TextManager.HighlightBullet (6);
break;
case 14:
// This effect can also be achieved with an image with some transparency set as the contents of the 'diffuse' property
CloudsNode.Geometry.FirstMaterial.Transparent.Contents = new NSImage (NSBundle.MainBundle.PathForResource ("Scenes/earth/cloudsTransparency", "png"));
CloudsNode.Geometry.FirstMaterial.TransparencyMode = SCNTransparencyMode.RgbZero;
SCNTransaction.Begin ();
SCNTransaction.AnimationDuration = 0;
CloudsNode.Geometry.FirstMaterial.Transparency = 0;
SCNTransaction.Commit ();
CloudsNode.Geometry.FirstMaterial.Transparency = 1;
ShowCodeExample ("material.#transparent#.contents =", "cloudsTransparency-mini", "png");
break;
case 15:
EarthNode.Geometry.FirstMaterial.Multiply.Contents = NSColor.FromDeviceRgba (1.0f, (float)(204 / 255.0), (float)(102 / 255.0), 1);
TextManager.HighlightBullet (7);
ShowCodeExample ("material.#mutliply#.contents = [NSColor yellowColor];", null, null);
break;
case 16:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 1.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.1f;
ShowCodeExample (null, null, null);
presentationViewController.UpdateLightingWithIntensities (new float[] { 0.01f });
break;
case 17:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
presentationViewController.UpdateLightingWithIntensities (LightIntensities);
break;
}
SCNTransaction.Commit ();
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
switch (index)
{
case 0:
// Set the slide's title and add some code
TextManager.SetTitle("Materials");
TextManager.AddBulletAtLevel("Diffuse", 0);
TextManager.AddBulletAtLevel("Ambient", 0);
TextManager.AddBulletAtLevel("Specular and shininess", 0);
TextManager.AddBulletAtLevel("Normal", 0);
TextManager.AddBulletAtLevel("Reflective", 0);
TextManager.AddBulletAtLevel("Emission", 0);
TextManager.AddBulletAtLevel("Transparent", 0);
TextManager.AddBulletAtLevel("Multiply", 0);
break;
case 1:
EarthNode.Opacity = 1.0f;
presentationViewController.UpdateLightingWithIntensities(new float[] { 1 });
break;
case 2:
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Blue;
TextManager.HighlightBullet(0);
ShowCodeExample("#material.#diffuse.contents# = [NSColor blueColor];#", null, null);
break;
case 3:
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-diffuse", "jpg"));
ShowCodeExample("#material.#diffuse.contents# =#", "earth-diffuse-mini", "jpg");
break;
case 4:
EarthNode.Geometry.FirstMaterial.Ambient.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-diffuse", "jpg"));
EarthNode.Geometry.FirstMaterial.Ambient.Intensity = 1;
TextManager.HighlightBullet(1);
ShowCodeExample("#material.#ambient#.contents =#", "earth-diffuse-mini", "jpg");
presentationViewController.UpdateLightingWithIntensities(LightIntensities);
break;
case 5:
EarthNode.Geometry.FirstMaterial.Shininess = 0.1f;
EarthNode.Geometry.FirstMaterial.Specular.Contents = NSColor.White;
TextManager.HighlightBullet(2);
ShowCodeExample("#material.#specular#.contents = [NSColor whiteColor];#", null, null);
break;
case 6:
EarthNode.Geometry.FirstMaterial.Specular.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-specular", "jpg"));
ShowCodeExample("#material.#specular#.contents =#", "earth-specular-mini", "jpg");
break;
case 7:
EarthNode.Geometry.FirstMaterial.Normal.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-bump", "png"));
EarthNode.Geometry.FirstMaterial.Normal.Intensity = 1.3f;
TextManager.HighlightBullet(3);
ShowCodeExample("#material.#normal#.contents =#", "earth-bump", "png");
break;
case 8:
EarthNode.Geometry.FirstMaterial.Reflective.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-reflective", "jpg"));
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.7f;
EarthNode.Geometry.FirstMaterial.Specular.Intensity = 0.0f;
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 2.0f;
SCNTransaction.AnimationTimingFunction = CAMediaTimingFunction.FromName(CAMediaTimingFunction.EaseInEaseOut);
CameraOriginalPosition = presentationViewController.CameraHandle.Position;
presentationViewController.CameraHandle.Position = presentationViewController.CameraHandle.ConvertPositionToNode(new SCNVector3(6, 0, -10.11f), presentationViewController.CameraHandle.ParentNode);
SCNTransaction.Commit();
TextManager.HighlightBullet(4);
ShowCodeExample("material.#reflective#.contents =", "earth-reflective", "jpg");
break;
case 9:
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
SCNTransaction.AnimationTimingFunction = CAMediaTimingFunction.FromName(CAMediaTimingFunction.EaseInEaseOut);
presentationViewController.CameraHandle.Position = CameraOriginalPosition;
SCNTransaction.Commit();
break;
case 10:
EarthNode.Geometry.FirstMaterial.Emission.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/earth-emissive", "jpg"));
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.5f;
TextManager.HighlightBullet(5);
ShowCodeExample("material.#emission#.contents =", "earth-emissive-mini2", "jpg");
break;
case 11:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 1.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.1f;
ShowCodeExample(null, null, null);
presentationViewController.UpdateLightingWithIntensities(new float[] { 0.01f }); // keeping the intensity non null avoids an unnecessary shader recompilation
break;
case 12:
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
presentationViewController.UpdateLightingWithIntensities(LightIntensities);
break;
case 13:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.0f;
CloudsNode.Opacity = 0.9f;
TextManager.HighlightBullet(6);
break;
case 14:
// This effect can also be achieved with an image with some transparency set as the contents of the 'diffuse' property
CloudsNode.Geometry.FirstMaterial.Transparent.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/earth/cloudsTransparency", "png"));
CloudsNode.Geometry.FirstMaterial.TransparencyMode = SCNTransparencyMode.RgbZero;
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0;
CloudsNode.Geometry.FirstMaterial.Transparency = 0;
SCNTransaction.Commit();
CloudsNode.Geometry.FirstMaterial.Transparency = 1;
ShowCodeExample("material.#transparent#.contents =", "cloudsTransparency-mini", "png");
break;
case 15:
EarthNode.Geometry.FirstMaterial.Multiply.Contents = NSColor.FromDeviceRgba(1.0f, (float)(204 / 255.0), (float)(102 / 255.0), 1);
TextManager.HighlightBullet(7);
ShowCodeExample("material.#mutliply#.contents = [NSColor yellowColor];", null, null);
break;
case 16:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 1.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.1f;
ShowCodeExample(null, null, null);
presentationViewController.UpdateLightingWithIntensities(new float[] { 0.01f });
break;
case 17:
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0.0f;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.3f;
presentationViewController.UpdateLightingWithIntensities(LightIntensities);
break;
}
SCNTransaction.Commit();
}
