public override void DidOrderIn(PresentationViewController presentationViewController)
{
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
SlideSceneGraph.ScenegraphDiagramGoToStep(5);
SceneGraphDiagramNode.Opacity = 1.0f;
SCNTransaction.Commit();
}
public override void SetupSlide(PresentationViewController presentationViewController)
{
// Set the slide's title and subtitle and add some text
TextManager.SetTitle("Scene Graph");
TextManager.SetSubtitle("Scene");
TextManager.AddBulletAtLevel("SCNScene", 0);
TextManager.AddBulletAtLevel("Starting point", 0);
// Setup the diagram
var diagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
GroundNode.AddChildNode(diagramNode);
}
public override void DidOrderIn(PresentationViewController presentationViewController)
{
var diagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
diagramNode.Opacity = 1.0f;
diagramNode.Rotation = new SCNVector4(1, 0, 0, 0);
SlideSceneGraph.ShowNodesNamed(new string[] { "scene" });
SCNTransaction.Commit();
}
private static void ShowNodesNamed(string[] names)
{
var diagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
foreach (var nodeName in names)
{
var node = diagramNode.FindChildNode(nodeName, true);
node.Opacity = 1.0f;
if (node.Rotation.Z == 0.0f)
{
node.Rotation = new SCNVector4(0, 1, 0, 0);
}
}
SCNTransaction.Commit();
}
public override void SetupSlide(PresentationViewController presentationViewController)
{
TextManager.SetTitle("Scene Manipulation");
TextManager.SetSubtitle("Retrieving a node");
TextManager.AddCode("#// Get by name \n"
+ "var aNode = scene.RootNode \n"
+ " .#FindChildNode #(\"aName\", true);#");
sceneGraphDiagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
SlideSceneGraph.ScenegraphDiagramGoToStep(7);
sceneGraphDiagramNode.Opacity = 0.0f;
sceneGraphDiagramNode.Position = new SCNVector3(1.5f, 8.0f, 0);
ContentNode.AddChildNode(sceneGraphDiagramNode);
}
public override void SetupSlide(PresentationViewController presentationViewController)
{
TextManager.SetTitle("Materials");
TextManager.AddBulletAtLevel("Determines the appearance of the geometry", 0);
TextManager.AddBulletAtLevel("SCNMaterial", 0);
TextManager.AddBulletAtLevel("Material properties", 0);
TextManager.AddBulletAtLevel("SCNMaterialProperty", 1);
TextManager.AddBulletAtLevel("Contents is a color or an image", 1);
// Prepare the diagram but hide it for now
SceneGraphDiagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
SlideSceneGraph.ScenegraphDiagramGoToStep(0);
SceneGraphDiagramNode.Position = new SCNVector3(3.0f, 8.0f, 0);
SceneGraphDiagramNode.Opacity = 0.0f;
ContentNode.AddChildNode(SceneGraphDiagramNode);
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
var diagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
SlideSceneGraph.ScenegraphDiagramGoToStep(index);
switch (index)
{
case 0:
diagramNode.Opacity = 0.0f;
diagramNode.Position = new SCNVector3(0.0f, 5.0f, 0.0f);
diagramNode.Rotation = new SCNVector4(1, 0, 0, -(float)(Math.PI / 2));
break;
case 1:
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0;
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
// Change the slide's subtitle and add some text
TextManager.SetSubtitle("Node");
TextManager.AddBulletAtLevel("SCNNode", 0);
TextManager.AddBulletAtLevel("A location in 3D space", 0);
TextManager.AddBulletAtLevel("Position / Rotation / Scale", 1);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
SCNTransaction.Commit();
break;
case 2:
TextManager.AddBulletAtLevel("Hierarchy of nodes", 0);
TextManager.AddBulletAtLevel("Relative to the parent node", 1);
break;
case 3:
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0;
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
// Change the slide's subtitle and add some text
TextManager.SetSubtitle("Node attributes");
TextManager.AddBulletAtLevel("Geometry", 0);
TextManager.AddBulletAtLevel("Camera", 0);
TextManager.AddBulletAtLevel("Light", 0);
TextManager.AddBulletAtLevel("Can be shared", 0);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
SCNTransaction.Commit();
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
// move the diagram up otherwise it would intersect the floor
diagramNode.Position = new SCNVector3(0.0f, diagramNode.Position.Y + 1.0f, 0.0f);
SCNTransaction.Commit();
break;
}
}
public static void ScenegraphDiagramGoToStep(int step)
{
var diagramNode = SlideSceneGraph.SharedScenegraphDiagramNode();
switch (step)
{
case 0:
// Restore the initial state (hidden and rotated)
foreach (var child in diagramNode)
{
child.Opacity = 0.0f;
if (child.Rotation.Z == 0) // don't touch nodes that already have a rotation set
{
child.Rotation = new SCNVector4(0, 1, 0, (float)(Math.PI / 2));
}
}
break;
case 1:
ShowNodesNamed(new string[] { "sceneArrow", "rootNode" });
break;
case 2:
ShowNodesNamed(new string[] { "child1", "child2", "child3", "nodeArrow1", "nodeArrow2", "nodeArrow3" });
break;
case 3:
ShowNodesNamed(new string[] {
"light",
"camera",
"geometry",
"lightArrow",
"cameraArrow",
"geometryArrow",
"geometryArrow2"
});
break;
case 4:
ShowNodesNamed(new string[] {
"scene",
"sceneArrow",
"rootNode",
"light",
"camera",
"cameraArrow",
"child1",
"child2",
"child3",
"nodeArrow1",
"nodeArrow2",
"nodeArrow3",
"geometry",
"lightArrow",
"geometryArrow",
"geometryArrow2"
});
HighlightNodes(new string[] {
"scene",
"sceneArrow",
"rootNode",
"light",
"camera",
"cameraArrow",
"child1",
"child2",
"child3",
"nodeArrow1",
"nodeArrow2",
"nodeArrow3",
"geometry",
"lightArrow",
"geometryArrow",
"geometryArrow2"
}, diagramNode);
break;
case 5:
ShowNodesNamed(new string[] {
"scene",
"sceneArrow",
"rootNode",
"light",
"camera",
"cameraArrow",
"child1",
"child2",
"child3",
"nodeArrow1",
"nodeArrow2",
"nodeArrow3",
"geometry",
"lightArrow",
"geometryArrow",
"geometryArrow2",
"materials"
});
HighlightNodes(new string[] {
"scene",
"sceneArrow",
"rootNode",
"child2",
"child3",
"nodeArrow2",
"nodeArrow3",
"geometry",
"geometryArrow",
"geometryArrow2",
"materials"
}, diagramNode);
break;
case 6:
HighlightNodes(new string[] { "child3", "geometryArrow", "geometry" }, diagramNode);
break;
case 7:
ShowNodesNamed(new string[] {
"scene",
"sceneArrow",
"rootNode",
"light",
"camera",
"cameraArrow",
"child1",
"child2",
"child3",
"nodeArrow1",
"nodeArrow2",
"nodeArrow3",
"geometry",
"lightArrow",
"geometryArrow",
"geometryArrow2",
"materials"
});
break;
}
}