| public static SCArrowBezierPath ( CGSize baseSize, CGSize tipSize, nfloat hollow, bool twoSides ) : NSBezierPath | ||
| baseSize | CGSize | |
| tipSize | CGSize | |
| hollow | nfloat | |
| twoSides | bool | |
| return | NSBezierPath | |
public static SCNNode SharedScenegraphDiagramNode()
{
if (DiagramNode == null)
{
DiagramNode = SCNNode.Create();
DiagramNode.Opacity = 0.0f;
// "Scene"
var blue = NSColor.FromDeviceRgba(49.0f / 255.0f, 80.0f / 255.0f, 201.0f / 255.0f, 1);
var box = Utils.SCBoxNode("Scene", new CGRect(-53.5f, -25, 107, 50), blue, 10, true);
box.Name = "scene";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(5.4f, 4.8f, 0);
DiagramNode.AddChildNode(box);
// Arrow from "Scene" to "Root Node"
var arrowNode = new SCNNode {
Name = "sceneArrow",
Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(3, 0.2f), new CGSize(0.5f, 0.7f), 0.2f, false), 0),
Scale = new SCNVector3(20, 20, 1),
Position = new SCNVector3(-5, 0, 8),
Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2))
};
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = blue;
box.AddChildNode(arrowNode);
// "Root Node"
var green = NSColor.FromDeviceRgba(154.0f / 255.0f, 197.0f / 255.0f, 58.0f / 255.0f, 1);
box = Utils.SCBoxNode("Root Node", new CGRect(-40, -36, 80, 72), green, 10, true);
box.Name = "rootNode";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(5.405f, 1.8f, 0);
DiagramNode.AddChildNode(box);
// Arrows from "Root Node" to child nodes
arrowNode = arrowNode.Clone();
arrowNode.Name = "nodeArrow1";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(5.8f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, true), 0);
arrowNode.Position = new SCNVector3(0, -30, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.85f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = green;
box.AddChildNode(arrowNode);
arrowNode = arrowNode.Clone();
arrowNode.Name = "nodeArrow2";
arrowNode.Position = new SCNVector3(0, -43, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * (1 - 0.85f)));
box.AddChildNode(arrowNode);
arrowNode = arrowNode.Clone();
arrowNode.Name = "nodeArrow3";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.6f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, true), 0);
arrowNode.Position = new SCNVector3(-4, -38, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.5f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = green;
box.AddChildNode(arrowNode);
// Multiple "Child Node"
box = Utils.SCBoxNode("Child Node", new CGRect(-40, -36, 80, 72), green, 10, true);
box.Name = "child1";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(2.405f, -2, 0);
DiagramNode.AddChildNode(box);
box = box.Clone();
box.Name = "child2";
box.Position = new SCNVector3(5.405f, -2, 0);
DiagramNode.AddChildNode(box);
box = box.Clone();
box.Name = "child3";
box.Position = new SCNVector3(8.405f, -2, 0);
DiagramNode.AddChildNode(box);
// "Light"
var purple = NSColor.FromDeviceRgba(190.0f / 255.0f, 56.0f / 255.0f, 243.0f / 255.0f, 1);
box = Utils.SCBoxNode("Light", new CGRect(-40, -20, 80, 40), purple, 10, true);
box.Name = "light";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(2.405f, -4.8f, 0);
DiagramNode.AddChildNode(box);
// Arrow to "Light"
arrowNode = new SCNNode {
Name = "lightArrow",
Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.0f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, false), 0),
Position = new SCNVector3(-5, 60, 8),
Scale = new SCNVector3(20, 20, 1),
Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2))
};
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = purple;
box.AddChildNode(arrowNode);
// "Camera"
box = Utils.SCBoxNode("Camera", new CGRect(-45, -20, 90, 40), purple, 10, true);
box.Name = "camera";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(5.25f, -4.8f, 0);
DiagramNode.AddChildNode(box);
// Arrow to "Camera"
arrowNode = arrowNode.Clone();
arrowNode.Name = "cameraArrow";
arrowNode.Position = new SCNVector3(0, 60, 8);
box.AddChildNode(arrowNode);
// "Geometry"
box = Utils.SCBoxNode("Geometry", new CGRect(-55, -20, 110, 40), purple, 10, true);
box.Name = "geometry";
box.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
box.Position = new SCNVector3(8.6f, -4.8f, 0);
DiagramNode.AddChildNode(box);
// Arrows to "Geometry"
arrowNode = arrowNode.Clone();
arrowNode.Name = "geometryArrow";
arrowNode.Position = new SCNVector3(-10, 60, 8);
box.AddChildNode(arrowNode);
arrowNode = arrowNode.Clone();
arrowNode.Name = "geometryArrow2";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(5.0f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, false), 0);
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = purple;
arrowNode.Position = new SCNVector3(-105, 53, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 8));
box.AddChildNode(arrowNode);
// Multiple "Material"
var redColor = NSColor.FromDeviceRgba(168.0f / 255.0f, 21.0f / 255.0f, 0.0f / 255.0f, 1);
var materialsBox = Utils.SCBoxNode(null, new CGRect(-151, -25, 302, 50), NSColor.LightGray, 2, true);
materialsBox.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
materialsBox.Name = "materials";
materialsBox.Position = new SCNVector3(8.7f, -7.1f, -0.2f);
DiagramNode.AddChildNode(materialsBox);
box = Utils.SCBoxNode("Material", new CGRect(-45, -20, 90, 40), redColor, 0, true);
box.Position = new SCNVector3(-100, 0, 0.2f);
materialsBox.AddChildNode(box);
box = box.Clone();
box.Position = new SCNVector3(100, 0, 0.2f);
materialsBox.AddChildNode(box);
box = box.Clone();
box.Position = new SCNVector3(0, 0, 0.2f);
materialsBox.AddChildNode(box);
// Arrow from "Geometry" to the materials
arrowNode = new SCNNode {
Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.0f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, false), 0),
Position = new SCNVector3(-6, 65, 8),
Scale = new SCNVector3(20, 20, 1),
Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2))
};
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = redColor;
box.AddChildNode(arrowNode);
materialsBox.ParentNode.ReplaceChildNode(materialsBox, materialsBox.FlattenedClone());
}
return(DiagramNode);
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
// Set the slide's title and subtitle and add some text
TextManager.SetTitle("Performance");
TextManager.SetSubtitle("Copying");
TextManager.AddBulletAtLevel("Attributes are shared by default", 0);
TextManager.AddBulletAtLevel("Unshare if needed", 0);
TextManager.AddBulletAtLevel("Copying geometries is cheap", 0);
break;
case 1:
// New "Node B" box
var nodeB = Utils.SCBoxNode("Node B", new CGRect(-55, -36, 110, 50), GreenColor, 10, true);
nodeB.Name = "nodeB";
nodeB.Position = new SCNVector3(140, 0, 0);
nodeB.Opacity = 0;
var nodeA = ContentNode.FindChildNode("nodeA", true);
nodeA.AddChildNode(nodeB);
// Arrow from "Root Node" to "Node B"
var arrowNode = SCNNode.Create();
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(140, 3), new CGSize(10, 14), 4, true), 0);
arrowNode.Position = new SCNVector3(-130, 60, 0);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.12f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = GreenColor;
nodeB.AddChildNode(arrowNode);
// Arrow from "Node B" to the shared geometry
arrowNode = SCNNode.Create();
arrowNode.Name = "arrow-shared-geometry";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(140, 3), new CGSize(10, 14), 4, false), 0);
arrowNode.Position = new SCNVector3(0, -28, 0);
arrowNode.Rotation = new SCNVector4(0, 0, 1, (float)(Math.PI * 1.12f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = PurpleColor;
nodeB.AddChildNode(arrowNode);
// Reveal
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
nodeB.Opacity = 1.0f;
// Show the related code
TextManager.AddCode("#// Copy a node \n"
+ "var nodeB = nodeA.#Copy# ();#");
SCNTransaction.Commit();
break;
case 2:
var geometryNodeA = ContentNode.FindChildNode("geometry", true);
var oldArrowNode = ContentNode.FindChildNode("arrow-shared-geometry", true);
// New "Geometry" box
var geometryNodeB = Utils.SCBoxNode("Geometry", new CGRect(-55, -20, 110, 40), PurpleColor, 10, true);
geometryNodeB.Position = new SCNVector3(140, 0, 0);
geometryNodeB.Opacity = 0;
geometryNodeA.AddChildNode(geometryNodeB);
// Arrow from "Node B" to the new geometry
arrowNode = SCNNode.Create();
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(55, 3), new CGSize(10, 14), 4, false), 0);
arrowNode.Position = new SCNVector3(0, 75, 0);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.5f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = PurpleColor;
geometryNodeB.AddChildNode(arrowNode);
// Arrow from the new geometry to "Material"
arrowNode = SCNNode.Create();
arrowNode.Name = "arrow-shared-material";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(140, 3), new CGSize(10, 14), 4, true), 0);
arrowNode.Position = new SCNVector3(-130, -80, 0);
arrowNode.Rotation = new SCNVector4(0, 0, 1, (float)(Math.PI * 0.12f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = RedColor;
geometryNodeB.AddChildNode(arrowNode);
// Reveal
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
geometryNodeB.Opacity = 1.0f;
oldArrowNode.Opacity = 0.0f;
// Show the related code
TextManager.AddEmptyLine();
TextManager.AddCode("#// Unshare geometry \n"
+ "nodeB.Geometry = nodeB.Geometry.#Copy# ();#");
SCNTransaction.Commit();
break;
case 3:
var materialANode = ContentNode.FindChildNode("material", true);
oldArrowNode = ContentNode.FindChildNode("arrow-shared-material", true);
// New "Material" box
var materialBNode = Utils.SCBoxNode("Material", new CGRect(-55, -20, 110, 40), NSColor.Orange, 10, true);
materialBNode.Position = new SCNVector3(140, 0, 0);
materialBNode.Opacity = 0;
materialANode.AddChildNode(materialBNode);
// Arrow from the unshared geometry to the new material
arrowNode = SCNNode.Create();
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(55, 3), new CGSize(10, 14), 4, false), 0);
arrowNode.Position = new SCNVector3(0, 75, 0);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.5f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Orange;
materialBNode.AddChildNode(arrowNode);
// Reveal
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
materialBNode.Opacity = 1.0f;
oldArrowNode.Opacity = 0.0f;
SCNTransaction.Commit();
break;
}
}
private void SetupLookAtScene()
{
var intermediateNode = SCNNode.Create();
intermediateNode.Scale = new SCNVector3(0.5f, 0.5f, 0.5f);
intermediateNode.Position = new SCNVector3(0, 0, 10);
ContentNode.AddChildNode(intermediateNode);
var ballMaterial = SCNMaterial.Create();
ballMaterial.Diffuse.Contents = new NSImage(NSBundle.MainBundle.PathForResource("Scenes/pool/pool_8", "png"));
ballMaterial.Specular.Contents = NSColor.White;
ballMaterial.Shininess = 0.9f; // shinny
ballMaterial.Reflective.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/color_envmap", "png"));
ballMaterial.Reflective.Intensity = 0.5f;
// Node hierarchy for the ball :
// _ballNode
// |__ cameraTarget : the target for the "look at" constraint
// |__ ballRotationNode : will rotate to animate the rolling ball
// |__ ballPivotNode : will own the geometry and will be rotated so that the "8" faces the camera at the beginning
BallNode = SCNNode.Create();
BallNode.Rotation = new SCNVector4(0, 1, 0, (float)(Math.PI / 4));
intermediateNode.AddChildNode(BallNode);
var cameraTarget = SCNNode.Create();
cameraTarget.Name = "cameraTarget";
cameraTarget.Position = new SCNVector3(0, 6, 0);
BallNode.AddChildNode(cameraTarget);
var ballRotationNode = SCNNode.Create();
ballRotationNode.Position = new SCNVector3(0, 4, 0);
BallNode.AddChildNode(ballRotationNode);
var ballPivotNode = SCNNode.Create();
ballPivotNode.Geometry = SCNSphere.Create(4.0f);
ballPivotNode.Geometry.FirstMaterial = ballMaterial;
ballPivotNode.Rotation = new SCNVector4(0, 1, 0, (float)(Math.PI / 2));
ballRotationNode.AddChildNode(ballPivotNode);
var arrowMaterial = SCNMaterial.Create();
arrowMaterial.Diffuse.Contents = NSColor.White;
arrowMaterial.Reflective.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/chrome", "jpg"));
var arrowContainer = SCNNode.Create();
arrowContainer.Name = "arrowContainer";
intermediateNode.AddChildNode(arrowContainer);
var arrowPath = Utils.SCArrowBezierPath(new CGSize(6, 2), new CGSize(3, 5), 0.5f, false);
// Create the arrows
for (var i = 0; i < 11; i++)
{
var arrowNode = SCNNode.Create();
arrowNode.Position = new SCNVector3((float)Math.Cos(Math.PI * i / 10.0f) * 20.0f, 3 + 18.5f * (float)Math.Sin(Math.PI * i / 10.0f), 0);
var arrowGeometry = SCNShape.Create(arrowPath, 1);
arrowGeometry.ChamferRadius = 0.2f;
var arrowSubNode = SCNNode.Create();
arrowSubNode.Geometry = arrowGeometry;
arrowSubNode.Geometry.FirstMaterial = arrowMaterial;
arrowSubNode.Pivot = SCNMatrix4.CreateTranslation(new SCNVector3(0, 2.5f, 0)); // place the pivot (center of rotation) at the middle of the arrow
arrowSubNode.Rotation = new SCNVector4(0, 0, 1, (float)(Math.PI / 2));
arrowNode.AddChildNode(arrowSubNode);
arrowContainer.AddChildNode(arrowNode);
}
}
// A node hierarchy that illustrates the cloning mechanism and how to unshare attributes
private SCNNode CloningDiagramNode()
{
var diagramNode = SCNNode.Create();
diagramNode.Position = new SCNVector3(7, 9, 3);
// "Scene" box
var sceneNode = Utils.SCBoxNode("Scene", new CGRect(-53.5f, -25, 107, 50), BlueColor, 10, true);
sceneNode.Name = "scene";
sceneNode.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
sceneNode.Position = new SCNVector3(0, 4.8f, 0);
diagramNode.AddChildNode(sceneNode);
// "Root node" box
var rootNode = Utils.SCBoxNode("Root Node", new CGRect(-40, -36, 80, 72), GreenColor, 10, true);
rootNode.Name = "rootNode";
rootNode.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
rootNode.Position = new SCNVector3(0.05f, 1.8f, 0);
diagramNode.AddChildNode(rootNode);
// "Node A" box
var nodeA = Utils.SCBoxNode("Node A", new CGRect(-55, -36, 110, 50), GreenColor, 10, true);
nodeA.Name = "nodeA";
nodeA.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
nodeA.Position = new SCNVector3(0, -1.4f, 0);
diagramNode.AddChildNode(nodeA);
// "Geometry" box
var geometryNode = Utils.SCBoxNode("Geometry", new CGRect(-55, -20, 110, 40), PurpleColor, 10, true);
geometryNode.Name = "geometry";
geometryNode.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
geometryNode.Position = new SCNVector3(0, -4.7f, 0);
diagramNode.AddChildNode(geometryNode);
// "Material" box
var materialNode = Utils.SCBoxNode("Material", new CGRect(-55, -20, 110, 40), RedColor, 10, true);
materialNode.Name = "material";
materialNode.Scale = new SCNVector3(0.03f, 0.03f, 0.03f);
materialNode.Position = new SCNVector3(0, -7.5f, 0);
diagramNode.AddChildNode(materialNode);
// Arrow from "Scene" to "Root Node"
var arrowNode = SCNNode.Create();
arrowNode.Name = "sceneArrow";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(3, 0.2f), new CGSize(0.5f, 0.7f), 0.2f, false), 0);
arrowNode.Scale = new SCNVector3(20, 20, 1);
arrowNode.Position = new SCNVector3(-5, 0, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = BlueColor;
sceneNode.AddChildNode(arrowNode);
// Arrow from "Root Node" to "Node A"
arrowNode = arrowNode.Clone();
arrowNode.Name = "arrow";
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.6f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, true), 0);
arrowNode.Position = new SCNVector3(-6, -38, 8);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI * 0.5f));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = GreenColor;
rootNode.AddChildNode(arrowNode);
// Arrow from "Node A" to "Geometry"
arrowNode = arrowNode.Clone();
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.6f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, false), 0);
arrowNode.Position = new SCNVector3(-5, 74, 8);
arrowNode.Scale = new SCNVector3(20, 20, 1);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = PurpleColor;
geometryNode.AddChildNode(arrowNode);
// Arrow from "Geometry" to "Material"
arrowNode = arrowNode.Clone();
arrowNode.Geometry = SCNShape.Create(Utils.SCArrowBezierPath(new CGSize(2.7f, 0.15f), new CGSize(0.5f, 0.7f), 0.2f, false), 0);
arrowNode.Position = new SCNVector3(-6, 74, 8);
arrowNode.Scale = new SCNVector3(20, 20, 1);
arrowNode.Rotation = new SCNVector4(0, 0, 1, -(float)(Math.PI / 2));
arrowNode.Geometry.FirstMaterial.Diffuse.Contents = RedColor;
materialNode.AddChildNode(arrowNode);
return(diagramNode);
}
