private void PresentPrimitives(PresentationViewController presentationViewController)
{
var count = 100;
var spread = 0.0f;
// create a cube with a sphere shape
for (int i = 0; i < count; ++i)
{
var model = SCNNode.Create();
model.Position = GroundNode.ConvertPositionToNode(new SCNVector3(RandFloat(-1, 1), RandFloat(30, 50), RandFloat(-1, 1)), null);
model.EulerAngles = new SCNVector3(RandFloat(0, NMath.PI * 2), RandFloat(0, NMath.PI * 2), RandFloat(0, NMath.PI * 2));
var size = new SCNVector3(RandFloat(1.0, 1.5), RandFloat(1.0, 1.5), RandFloat(1.0, 1.5));
var random = new Random((int)DateTime.Now.Ticks);
int geometryIndex = random.Next(0, 7);
switch (geometryIndex)
{
case 0: // Box
model.Geometry = SCNBox.Create(size.X, size.Y, size.Z, 0);
break;
case 1: // Pyramid
model.Geometry = SCNPyramid.Create(size.X, size.Y, size.Z);
break;
case 2: // Sphere
model.Geometry = SCNSphere.Create(size.X);
break;
case 3: // Cylinder
model.Geometry = SCNCylinder.Create(size.X, size.Y);
break;
case 4: // Tube
model.Geometry = SCNTube.Create(size.X, size.X + size.Z, size.Y);
break;
case 5: // Capsule
model.Geometry = SCNCapsule.Create(size.X, size.Y + 2 * size.X);
break;
case 6: // Torus
model.Geometry = SCNTorus.Create(size.X, NMath.Min(size.X, size.Y) / 2);
break;
default:
break;
}
model.Geometry.FirstMaterial.Multiply.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/texture", "png"));
model.PhysicsBody = SCNPhysicsBody.CreateDynamicBody();
model.PhysicsBody.Velocity = new SCNVector3(RandFloat(-spread, spread), -10, RandFloat(-spread, spread));
model.PhysicsBody.AngularVelocity = new SCNVector4(RandFloat(-1, 1), RandFloat(-1, 1), RandFloat(-1, 1), RandFloat(-3, 3));
Shapes.Add(model);
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(model);
}
}
private void PresentBalls(PresentationViewController presentationViewController)
{
var count = 150;
for (int i = 0; i < count; ++i)
{
var worldPos = GroundNode.ConvertPositionToNode(new SCNVector3(RandFloat(-5, 5), RandFloat(25, 30), RandFloat(-5, 5)), null);
var ball = CreatePoolBall(worldPos);
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(ball);
Balls.Add(ball);
}
}
private void PresentDices(PresentationViewController presentationViewController)
{
var count = 200;
var spread = 6;
// drop rigid bodies cubes
var intervalTime = 5.0 / count;
var remainingCount = count;
Timer = NSTimer.CreateRepeatingTimer(intervalTime, delegate(NSTimer obj) {
if (Step > 4)
{
Timer.Invalidate();
return;
}
SCNTransaction.Begin();
var worldPos = GroundNode.ConvertPositionToNode(new SCNVector3(0, 30, 0), null);
var dice = CreateBlock(worldPos, new SCNVector3(1.5f, 1.5f, 1.5f));
//add to scene
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(dice);
dice.PhysicsBody.Velocity = new SCNVector3(RandFloat(-spread, spread), -10, RandFloat(-spread, spread));
dice.PhysicsBody.AngularVelocity = new SCNVector4(RandFloat(-1, 1), RandFloat(-1, 1), RandFloat(-1, 1), RandFloat(-3, 3));
SCNTransaction.Commit();
Dices.Add(dice);
// ensure we stop firing
if (--remainingCount < 0)
{
Timer.Invalidate();
}
});
NSRunLoop.Current.AddTimer(Timer, NSRunLoopMode.Default);
}
private void PresentMeshes(PresentationViewController presentationViewController)
{
// add meshes
var container = SCNNode.Create();
var black = Utils.SCAddChildNode(container, "teapot", "Scenes.scnassets/lod/midResTeapot.dae", 5);
int count = 100;
for (int i = 0; i < count; ++i)
{
var worldPos = GroundNode.ConvertPositionToNode(new SCNVector3(RandFloat(-1, 1), RandFloat(30, 50), RandFloat(-1, 1)), null);
var node = (SCNNode)black.Copy();
node.Position = worldPos;
node.PhysicsBody = SCNPhysicsBody.CreateDynamicBody();
node.PhysicsBody.Friction = 0.5f;
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(node);
Meshes.Add(node);
}
}
private void MoveTarget(int step)
{
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0.75f;
switch (step)
{
case 0:
Ik.TargetPosition = GroundNode.ConvertPositionToNode(new SCNVector3(-70, 2, 50), null);
break;
case 1:
Target.Position = new SCNVector3(-1, 4, 10);
Ik.TargetPosition = GroundNode.ConvertPositionToNode(new SCNVector3(-30, -50, 50), null);
break;
case 2:
Target.Position = new SCNVector3(-5, 5, 10);
Ik.TargetPosition = GroundNode.ConvertPositionToNode(new SCNVector3(-70, 2, 50), null);
break;
}
Target.Opacity = 1;
SCNTransaction.Commit();
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
Step = index;
switch (index)
{
case 0:
break;
case 1:
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.SetSubtitle("SCNPhysicsBody");
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.AddBulletAtLevel("Dynamic Bodies", 0);
// Add some code
TextManager.AddCode("#// Make a node dynamic\n"
+ "aNode.#physicsBody# = [SCNPhysicsBody #dynamicBody#];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
break;
case 2:
//add a cube
var worldPos = GroundNode.ConvertPositionToNode(new SCNVector3(0, 12, 2), null);
var dice = CreateBlock(worldPos, new SCNVector3(1.5f, 1.5f, 1.5f));
dice.PhysicsBody = null; //wait!
dice.Rotation = new SCNVector4(0, 0, 1, (float)(Math.PI / 4) * 0.5f);
dice.Scale = new SCNVector3(0.001f, 0.001f, 0.001f);
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(dice);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0.75f;
dice.Scale = new SCNVector3(2, 2, 2);
SCNTransaction.Commit();
Dices.Add(dice);
break;
case 3:
foreach (var node in Dices)
{
node.PhysicsBody = SCNPhysicsBody.CreateDynamicBody();
}
break;
case 4:
PresentDices(presentationViewController);
break;
case 5:
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.AddBulletAtLevel("Manipulate with forces", 0);
// Add some code
TextManager.AddCode("#// Apply an impulse\n"
+ "[aNode.physicsBody #applyForce:#aVector3 #atPosition:#aVector3 #impulse:#YES];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
break;
case 6:
// remove dices
var center = new SCNVector3(0, -5, 20);
center = GroundNode.ConvertPositionToNode(center, null);
Explosion(center, Dices);
var popTime = new DispatchTime(DispatchTime.Now, (long)(1 * Utils.NSEC_PER_SEC));
DispatchQueue.MainQueue.DispatchAfter(popTime, () => {
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.AddBulletAtLevel("Static Bodies", 0);
TextManager.AddCode("#// Make a node static\n"
+ "aNode.#physicsBody# = [SCNPhysicsBody #staticBody#];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
});
break;
case 7:
PresentWalls(presentationViewController);
break;
case 8:
PresentBalls(presentationViewController);
break;
case 9:
//remove walls
var walls = new List <SCNNode> ();
GroundNode.EnumerateChildNodes(delegate(SCNNode node, out bool stop) {
stop = false;
if (node.Name == "container-wall")
{
node.RunAction(SCNAction.Sequence(new SCNAction [] {
SCNAction.MoveBy(new SCNVector3(0, -2, 0), 0.5),
SCNAction.RemoveFromParentNode()
}));
walls.Add(node);
}
return(stop);
});
break;
case 10:
// remove balls
center = new SCNVector3(0, -5, 5);
center = GroundNode.ConvertPositionToNode(center, null);
Explosion(center, Balls);
popTime = new DispatchTime(DispatchTime.Now, (long)(0.5 * Utils.NSEC_PER_SEC));
DispatchQueue.MainQueue.DispatchAfter(popTime, () => {
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.AddBulletAtLevel("Kinematic Bodies", 0);
TextManager.AddCode("#// Make a node kinematic\n"
+ "aNode.#physicsBody# = [SCNPhysicsBody #kinematicBody#];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
});
break;
case 11:
var boxNode = SCNNode.Create();
boxNode.Geometry = SCNBox.Create(10, 0.2f, 10, 0);
boxNode.Position = new SCNVector3(0, 5, MIDDLE_Z);
boxNode.Geometry.FirstMaterial.Emission.Contents = NSColor.DarkGray;
boxNode.PhysicsBody = SCNPhysicsBody.CreateKinematicBody();
boxNode.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy(0, 0, NMath.PI * 2, 2.0)));
GroundNode.AddChildNode(boxNode);
KinematicItems.Add(boxNode);
var invisibleWall = SCNNode.Create();
invisibleWall.Geometry = SCNBox.Create(4, 40, 10, 0);
invisibleWall.Position = new SCNVector3(-7, 0, MIDDLE_Z);
invisibleWall.Geometry.FirstMaterial.Transparency = 0;
invisibleWall.PhysicsBody = SCNPhysicsBody.CreateStaticBody();
GroundNode.AddChildNode(invisibleWall);
KinematicItems.Add(invisibleWall);
invisibleWall = (SCNNode)invisibleWall.Copy();
invisibleWall.Position = new SCNVector3(7, 0, MIDDLE_Z);
GroundNode.AddChildNode(invisibleWall);
KinematicItems.Add(invisibleWall);
invisibleWall = (SCNNode)invisibleWall.Copy();
invisibleWall.Geometry = SCNBox.Create(10, 40, 4, 0);
invisibleWall.Geometry.FirstMaterial.Transparency = 0;
invisibleWall.Position = new SCNVector3(0, 0, MIDDLE_Z - 7);
invisibleWall.PhysicsBody = SCNPhysicsBody.CreateStaticBody();
GroundNode.AddChildNode(invisibleWall);
KinematicItems.Add(invisibleWall);
invisibleWall = (SCNNode)invisibleWall.Copy();
invisibleWall.Position = new SCNVector3(0, 0, MIDDLE_Z + 7);
GroundNode.AddChildNode(invisibleWall);
KinematicItems.Add(invisibleWall);
for (int i = 0; i < 100; i++)
{
var ball = SCNNode.Create();
worldPos = boxNode.ConvertPositionToNode(new SCNVector3(RandFloat(-4, 4), RandFloat(10, 30), RandFloat(-1, 4)), null);
ball.Position = worldPos;
ball.Geometry = SCNSphere.Create(0.5f);
ball.Geometry.FirstMaterial.Diffuse.Contents = NSColor.Cyan;
ball.PhysicsBody = SCNPhysicsBody.CreateDynamicBody();
((SCNView)presentationViewController.View).Scene.RootNode.AddChildNode(ball);
KinematicItems.Add(ball);
}
break;
case 12:
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.SetSubtitle("SCNPhysicsShape");
TextManager.AddCode("#// Configure the physics shape\n\n"
+ "aNode.physicsBody.#physicsShape# = \n\t[#SCNPhysicsShape# shapeWithGeometry:aGeometry options:options];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
KinematicItems[0].RunAction(SCNAction.Sequence(new SCNAction[] {
SCNAction.FadeOut(0.5),
SCNAction.RemoveFromParentNode()
}));
for (int i = 1; i < 5; i++)
{
KinematicItems[i].RemoveFromParentNode();
}
KinematicItems = null;
break;
case 13:
//add meshes
PresentMeshes(presentationViewController);
break;
case 14:
// remove meshes
center = new SCNVector3(0, -5, 20);
center = GroundNode.ConvertPositionToNode(center, null);
Explosion(center, Meshes);
break;
case 15:
// add shapes
PresentPrimitives(presentationViewController);
break;
case 16:
// remove shapes
center = new SCNVector3(0, -5, 20);
center = GroundNode.ConvertPositionToNode(center, null);
Explosion(center, Shapes);
popTime = new DispatchTime(DispatchTime.Now, (long)(0.5 * Utils.NSEC_PER_SEC));
DispatchQueue.MainQueue.DispatchAfter(popTime, () => {
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.SetSubtitle("SCNPhysicsBehavior");
TextManager.AddCode("#// setup a physics behavior\n\n"
+ "#SCNPhysicsHingeJoint# *joint = [SCNPhysicsHingeJoint\n\n"
+ "jointWithBodyA:#nodeA.physicsBody# axisA:[...] anchorA:[...]\n\n"
+ "bodyB:#nodeB.physicsBody# axisB:[...] anchorB:[...]];\n\n\n"
+ "[scene.#physicsWorld# addBehavior:joint];#");
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Code);
});
break;
case 17:
//add meshes
PresentHinge(presentationViewController);
break;
case 18:
//remove constraints
((SCNView)presentationViewController.View).Scene.PhysicsWorld.RemoveAllBehaviors();
foreach (var node in Hinges)
{
node.RunAction(SCNAction.Sequence(new SCNAction[] { SCNAction.Wait(3.0), SCNAction.FadeOut(0.5), SCNAction.RemoveFromParentNode() }));
}
break;
case 19:
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.FlipOutText(SlideTextManager.TextType.Code);
TextManager.SetSubtitle("More...");
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.AddBulletAtLevel("SCNPhysicsField", 0);
TextManager.AddBulletAtLevel("SCNPhysicsVehicle", 0);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
break;
}
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
break;
case 1:
TextManager.HighlightBullet(0);
StaticShadowNode.Opacity = 1;
var node = TextManager.AddCode("#aMaterial.#multiply#.contents = aShadowMap;#");
node.Position = new SCNVector3(node.Position.X, node.Position.Y - 4, node.Position.Z);
foreach (var child in node.ChildNodes)
{
child.RenderingOrder = 1;
foreach (var m in child.Geometry.Materials)
{
m.ReadsFromDepthBuffer = false;
}
}
break;
case 2:
//move the tree
PalmTree.RunAction(SCNAction.RotateBy(0, NMath.PI * 4, 0, 8));
break;
case 3:
TextManager.FadesIn = true;
TextManager.FadeOutText(SlideTextManager.TextType.Code);
TextManager.AddEmptyLine();
node = TextManager.AddCode("#aLight.#castsShadow# = YES;#");
foreach (SCNNode child in node.ChildNodes)
{
child.RenderingOrder = 1;
foreach (SCNMaterial m in child.Geometry.Materials)
{
m.ReadsFromDepthBuffer = false;
m.WritesToDepthBuffer = false;
}
}
node.Position = new SCNVector3(node.Position.X, node.Position.Y - 6, node.Position.Z);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0.75f;
var spot = presentationViewController.SpotLight;
OldSpotShadowColor = spot.Light.ShadowColor;
spot.Light.ShadowColor = NSColor.Black;
spot.Light.ShadowRadius = 3;
var tp = TextManager.TextNode.Position;
var superNode = presentationViewController.CameraNode.ParentNode.ParentNode;
var p0 = GroundNode.ConvertPositionToNode(SCNVector3.Zero, null);
var p1 = GroundNode.ConvertPositionToNode(new SCNVector3(20, 0, 0), null);
var tr = new SCNVector3(p1.X - p0.X, p1.Y - p0.Y, p1.Z - p0.Z);
var p = superNode.Position;
p.X += tr.X;
p.Y += tr.Y;
p.Z += tr.Z;
tp.X += 20;
tp.Y += 0;
tp.Z += 0;
superNode.Position = p;
TextManager.TextNode.Position = tp;
SCNTransaction.Commit();
TextManager.HighlightBullet(1);
break;
case 4:
//move the light
var lightPivot = SCNNode.Create();
lightPivot.Position = Character.Position;
GroundNode.AddChildNode(lightPivot);
spot = presentationViewController.SpotLight;
OldSpotPosition = spot.Position;
OldSpotParent = spot.ParentNode;
OldSpotZNear = spot.Light.ZNear;
spot.Light.ZNear = 20;
spot.Position = lightPivot.ConvertPositionFromNode(spot.Position, spot.ParentNode);
lightPivot.AddChildNode(spot);
//add an object to represent the light
var lightModel = SCNNode.Create();
var lightHandle = SCNNode.Create();
var cone = SCNCone.Create(0, 0.5f, 1);
cone.RadialSegmentCount = 10;
cone.HeightSegmentCount = 5;
lightModel.Geometry = cone;
lightModel.Geometry.FirstMaterial.Emission.Contents = NSColor.Yellow;
lightHandle.Position = new SCNVector3(spot.Position.X * DIST, spot.Position.Y * DIST, spot.Position.Z * DIST);
lightModel.CastsShadow = false;
lightModel.EulerAngles = new SCNVector3(NMath.PI / 2, 0, 0);
lightHandle.AddChildNode(lightModel);
lightHandle.Constraints = new SCNConstraint[] { SCNLookAtConstraint.Create(Character) };
lightPivot.AddChildNode(lightHandle);
LightHandle = lightHandle;
var animation = CABasicAnimation.FromKeyPath("eulerAngles.z");
animation.From = new NSNumber((nfloat)(Math.PI / 4) * 1.7f);
animation.To = new NSNumber((nfloat)(-Math.PI / 4) * 0.3f);
animation.Duration = 4;
animation.AutoReverses = true;
animation.RepeatCount = float.MaxValue;
animation.TimingFunction = CAMediaTimingFunction.FromName(CAMediaTimingFunction.EaseInEaseOut);
animation.TimeOffset = animation.Duration / 2;
lightPivot.AddAnimation(animation, new NSString("lightAnim"));
break;
case 5:
TextManager.FadeOutText(SlideTextManager.TextType.Code);
var text = TextManager.AddCode("#aLight.#shadowMode# =\n#SCNShadowModeModulated#;\naLight.#gobo# = anImage;#");
text.Position = new SCNVector3(text.Position.X, text.Position.Y - 6, text.Position.Z);
text.EnumerateChildNodes((SCNNode child, out bool stop) => {
stop = false;
child.RenderingOrder = 1;
foreach (var m in child.Geometry.Materials)
{
m.ReadsFromDepthBuffer = false;
m.WritesToDepthBuffer = false;
}
return(stop);
});
LightHandle.RemoveFromParentNode();
RestoreSpotPosition(presentationViewController);
TextManager.HighlightBullet(2);
spot = presentationViewController.SpotLight;
spot.Light.CastsShadow = false;
var head = Character.FindChildNode("Bip001_Pelvis", true);
node = SCNNode.Create();
node.Light = SCNLight.Create();
node.Light.LightType = SCNLightType.Spot;
node.Light.SpotOuterAngle = 30;
node.Constraints = new SCNConstraint[] { SCNLookAtConstraint.Create(head) };
node.Position = new SCNVector3(0, 220, 0);
node.Light.ZNear = 10;
node.Light.ZFar = 1000;
node.Light.Gobo.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/blobShadow", "jpg"));
node.Light.Gobo.Intensity = 0.65f;
node.Light.ShadowMode = SCNShadowMode.Modulated;
//exclude character from shadow
node.Light.CategoryBitMask = 0x1;
Character.FindNodes((SCNNode child, out bool stop) => {
stop = false;
child.CategoryBitMask = 0x2;
return(stop);
});
Projector = node;
Character.AddChildNode(node);
break;
}
}
