public override void SetupSlide(PresentationViewController presentationViewController)
{
// Create a node for Earth and another node to display clouds
// Use the 'pivot' property to tilt Earth because we don't want to see the north pole.
EarthNode = SCNNode.Create();
EarthNode.Pivot = SCNMatrix4.CreateFromAxisAngle(new SCNVector3(1, 0, 0), (float)(Math.PI * 0.1f));
EarthNode.Position = new SCNVector3(6, 7.2f, -2);
EarthNode.Geometry = SCNSphere.Create(7.2f);
CloudsNode = SCNNode.Create();
CloudsNode.Geometry = SCNSphere.Create(7.9f);
GroundNode.AddChildNode(EarthNode);
EarthNode.AddChildNode(CloudsNode);
// Initially hide everything
EarthNode.Opacity = 0.0f;
CloudsNode.Opacity = 0.0f;
EarthNode.Geometry.FirstMaterial.Ambient.Intensity = 0;
EarthNode.Geometry.FirstMaterial.Normal.Intensity = 0;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0;
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 0;
// Use a shader modifier to display an environment map independently of the lighting model used
EarthNode.Geometry.ShaderModifiers = new SCNShaderModifiers {
EntryPointFragment = " _output.color.rgb -= _surface.reflective.rgb * _lightingContribution.diffuse;"
+ "_output.color.rgb += _surface.reflective.rgb;"
};
// Add animations
var rotationAnimation = CABasicAnimation.FromKeyPath("rotation");
rotationAnimation.Duration = 40.0f;
rotationAnimation.RepeatCount = float.MaxValue;
rotationAnimation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
EarthNode.AddAnimation(rotationAnimation, new NSString("earthNodeAnimation"));
rotationAnimation.Duration = 100.0f;
CloudsNode.AddAnimation(rotationAnimation, new NSString("cloudsNodeAnimation"));
}
public override void SetupSlide(PresentationViewController presentationViewController)
{
// Set the slide's title and add some code
TextManager.SetTitle("Materials");
TextManager.AddBulletAtLevel("Diffuse", 0);
TextManager.AddBulletAtLevel("Ambient", 0);
TextManager.AddBulletAtLevel("Specular", 0);
TextManager.AddBulletAtLevel("Normal", 0);
TextManager.AddBulletAtLevel("Reflective", 0);
TextManager.AddBulletAtLevel("Emission", 0);
TextManager.AddBulletAtLevel("Transparent", 0);
TextManager.AddBulletAtLevel("Multiply", 0);
// Create a node for Earth and another node to display clouds
// Use the 'pivot' property to tilt Earth because we don't want to see the north pole.
EarthNode = SCNNode.Create();
EarthNode.Pivot = SCNMatrix4.CreateFromAxisAngle(new SCNVector3(1, 0, 0), (float)(Math.PI * 0.1f));
EarthNode.Position = new SCNVector3(6, 7.2f, -2);
EarthNode.Geometry = SCNSphere.Create(7.2f);
CloudsNode = SCNNode.Create();
CloudsNode.Geometry = SCNSphere.Create(7.9f);
GroundNode.AddChildNode(EarthNode);
EarthNode.AddChildNode(CloudsNode);
// Initially hide everything
EarthNode.Opacity = 1.0f;
CloudsNode.Opacity = 0.5f;
EarthNode.Geometry.FirstMaterial.Ambient.Intensity = 1;
EarthNode.Geometry.FirstMaterial.Normal.Intensity = 1;
EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 0.2f;
EarthNode.Geometry.FirstMaterial.Reflective.Contents = NSColor.White;
EarthNode.Geometry.FirstMaterial.FresnelExponent = 3;
EarthNode.Geometry.FirstMaterial.Emission.Intensity = 1;
EarthNode.Geometry.FirstMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes.scnassets/earth/earth-diffuse", "jpg"));
EarthNode.Geometry.FirstMaterial.Shininess = 0.1f;
EarthNode.Geometry.FirstMaterial.Specular.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes.scnassets/earth/earth-specular", "jpg"));
EarthNode.Geometry.FirstMaterial.Specular.Intensity = 0.8f;
EarthNode.Geometry.FirstMaterial.Normal.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes.scnassets/earth/earth-bump", "png"));
EarthNode.Geometry.FirstMaterial.Normal.Intensity = 1.3f;
EarthNode.Geometry.FirstMaterial.Emission.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes.scnassets/earth/earth-emissive", "jpg"));
//EarthNode.Geometry.FirstMaterial.Reflective.Intensity = 1.0f;
// 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.scnassets/earth/cloudsTransparency", "png"));
CloudsNode.Geometry.FirstMaterial.TransparencyMode = SCNTransparencyMode.RgbZero;
// Use a shader modifier to display an environment map independently of the lighting model used
/*EarthNode.Geometry.ShaderModifiers = new SCNShaderModifiers {
* EntryCGPointragment = " _output.color.rgb -= _surface.reflective.rgb * _lightingContribution.diffuse;"
+ "_output.color.rgb += _surface.reflective.rgb;"
+ };*/
// Add animations
var rotationAnimation = CABasicAnimation.FromKeyPath("rotation");
rotationAnimation.Duration = 40.0f;
rotationAnimation.RepeatCount = float.MaxValue;
rotationAnimation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)(Math.PI * 2)));
EarthNode.AddAnimation(rotationAnimation, new NSString("earthNodeAnimation"));
rotationAnimation.Duration = 100.0f;
CloudsNode.AddAnimation(rotationAnimation, new NSString("cloudsNodeAnimation"));
//animate light
var lightHandleNode = SCNNode.Create();
var lightNode = SCNNode.Create();
lightNode.Light = SCNLight.Create();
lightNode.Light.LightType = SCNLightType.Directional;
lightNode.Light.CastsShadow = true;
lightHandleNode.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy(0, -NMath.PI * 2, 0, 12)));
lightHandleNode.AddChildNode(lightNode);
EarthNode.AddChildNode(lightHandleNode);
}