public static SCNMatrix4 ToSCNMatrix4(this NMatrix4 self)
{
var row0 = new SCNVector4(self.M11, self.M12, self.M13, self.M14);
var row1 = new SCNVector4(self.M21, self.M22, self.M23, self.M24);
var row2 = new SCNVector4(self.M31, self.M32, self.M33, self.M34);
var row3 = new SCNVector4(self.M41, self.M42, self.M43, self.M44);
return(new SCNMatrix4(row0, row1, row2, row3));
}
public static float[,] ToFloatMatrix4(this NMatrix4 self)
{
return(new float[4, 4] {
{ self.M11, self.M21, self.M31, self.M41 },
{ self.M12, self.M22, self.M32, self.M42 },
{ self.M13, self.M23, self.M33, self.M43 },
{ self.M14, self.M24, self.M34, self.M44 },
});
}
private void AddSelectedItem(ARHitTestResult hitTestResult)
{
SCNNode node = GetSelectedNode();
NMatrix4 transform = hitTestResult.WorldTransform;
Vector4 thirdColumn = transform.Column3;
node.Position = new SCNVector3(thirdColumn.X, thirdColumn.Y, thirdColumn.Z);
sceneView.Scene.RootNode.AddChildNode(node);
}
public static SCNMatrix4 ToSCNMatrix4(this NMatrix4 self)
{
var newMatrix = new SCNMatrix4(
self.M11, self.M21, self.M31, self.M41,
self.M12, self.M22, self.M32, self.M42,
self.M13, self.M23, self.M33, self.M43,
self.M14, self.M24, self.M34, self.M44
);
return(newMatrix);
}
public void ProjectionMatrix()
{
using (var obj = new MDLCamera()) {
Assert.AreEqual(0.1f, obj.NearVisibilityDistance, 0.0001f, "NearVisibilityDistance");
Assert.AreEqual(1000f, obj.FarVisibilityDistance, 0.0001f, "FarVisibilityDistance");
Assert.AreEqual(54f, obj.FieldOfView, 0.0001f, "FieldOfView");
#if NET
var initialProjectionMatrix = new NMatrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.0002f, -0.20002f,
0, 0, -1, 0
);
#else
var initialProjectionMatrix = new Matrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.0002f, -1,
0, 0, -0.20002f, 0
);
#endif
Asserts.AreEqual(initialProjectionMatrix, obj.ProjectionMatrix, 0.0001f, "Initial");
#if NET
Asserts.AreEqual(initialProjectionMatrix, CFunctions.GetMatrixFloat4x4(obj, "projectionMatrix"), 0.0001f, "Initial native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)initialProjectionMatrix), obj.ProjectionMatrix4x4, 0.0001f, "Initial 4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)initialProjectionMatrix), CFunctions.GetMatrixFloat4x4(obj, "projectionMatrix"), 0.0001f, "Initial native");
#endif
obj.NearVisibilityDistance = 1.0f;
#if NET
var modifiedProjectionMatrix = new NMatrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.002002f, -2.002002f,
0, 0, -1, 0
);
#else
var modifiedProjectionMatrix = new Matrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.002002f, -1,
0, 0, -2.002002f, 0
);
#endif
Asserts.AreEqual(modifiedProjectionMatrix, obj.ProjectionMatrix, 0.0001f, "Second");
#if NET
Asserts.AreEqual(modifiedProjectionMatrix, CFunctions.GetMatrixFloat4x4(obj, "projectionMatrix"), 0.0001f, "Second native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)modifiedProjectionMatrix), obj.ProjectionMatrix4x4, 0.0001f, "Second 4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)modifiedProjectionMatrix), CFunctions.GetMatrixFloat4x4(obj, "projectionMatrix"), 0.0001f, "Second native");
#endif
}
}
private void SetNewVirtualObjectToAnchor(SCNNode node, ARAnchor anchor, NMatrix4 cameraTransform)
{
var cameraWorldPosition = cameraTransform.GetTranslation();
var cameraToPosition = anchor.Transform.GetTranslation() - cameraWorldPosition;
// Limit the distance of the object from the camera to a maximum of 10 meters.
if (cameraToPosition.Length > 10f)
{
cameraToPosition = Vector3.Normalize(cameraToPosition);
cameraToPosition *= 10f;
}
node.Position = cameraWorldPosition + cameraToPosition;
}
/// <summary>
/// Hit test against existing anchors
/// </summary>
private bool TryHitTestFromTouchPoint(CGPoint pt, out NMatrix4 worldTransform)
{
ARHitTestResult[] hits = this.sceneView.HitTest(pt, ARHitTestResultType.FeaturePoint);
if (hits != null && hits.Length > 0)
{
ARHitTestResult hit = hits.FirstOrDefault();
if (hit != null)
{
worldTransform = hit.WorldTransform;
return(true);
}
}
worldTransform = default;
return(false);
}
public void MatrixTest()
{
#if NET
var m4 = new NMatrix4(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
#else
var m4 = new Matrix4(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
var m4x4 = (MatrixFloat4x4)m4;
#endif
using (var obj = new MDLTransform()) {
// identity
Asserts.AreEqual(Matrix4.Identity, obj.Matrix, "Initial identity");
#if NET
Asserts.AreEqual(MatrixFloat4x4.Identity, obj.Matrix, "Initial identity 4x4");
#else
Asserts.AreEqual(MatrixFloat4x4.Identity, obj.GetMatrix4x4(), "Initial identity 4x4");
#endif
Asserts.AreEqual(MatrixFloat4x4.Identity, CFunctions.GetMatrixFloat4x4(obj, "matrix"), "Initial identity native");
// translate the transform somewhere
obj.SetTranslation(new Vector3(2, 2, 2), 0);
// the matrix should now be a translation matrix like this:
// 1 0 0 0 2
// 0 1 0 0 2
// 0 0 1 0 2
// 0 0 0 1 0
#if !NET
// but since Matrix4 is transposed when compared to MatrixFloat4x4, we get this:
Asserts.AreEqual(new Matrix4(
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
2, 2, 2, 1
), obj.Matrix, "Translated");
// The 4x4 version is correct:
#endif
Asserts.AreEqual(new Matrix4(
1, 0, 0, 2,
0, 1, 0, 2,
0, 0, 1, 2,
0, 0, 0, 1
#if NET
), obj.Matrix, "Translated 4x4");
public void LoadVirtualObject(VirtualObject vo, SCNVector3 position, NMatrix4 cameraTransform)
{
VirtualObjects.Add(vo);
if (Delegate != null)
{
Delegate.WillLoad(this, vo);
}
vo.Load();
// Immediately place the object in 3D space
SetNewVirtualObjectPosition(vo, position, cameraTransform);
lastUsedObject = vo;
if (Delegate != null)
{
Delegate.DidLoad(this, vo);
}
}
public static void SetTransform(this IGazeSnapshot snapshot, NMatrix4 transformMatrix)
{
snapshot.M11 = transformMatrix.M11;
snapshot.M12 = transformMatrix.M12;
snapshot.M13 = transformMatrix.M13;
snapshot.M14 = transformMatrix.M14;
snapshot.M21 = transformMatrix.M21;
snapshot.M22 = transformMatrix.M22;
snapshot.M23 = transformMatrix.M23;
snapshot.M24 = transformMatrix.M24;
snapshot.M31 = transformMatrix.M31;
snapshot.M32 = transformMatrix.M32;
snapshot.M33 = transformMatrix.M33;
snapshot.M34 = transformMatrix.M34;
//snapshot.M41 = transformMatrix.M41;
//snapshot.M42 = transformMatrix.M42;
//snapshot.M43 = transformMatrix.M43;
//snapshot.M44 = transformMatrix.M44;
}
public void CreateLocalAnchor(ref NMatrix4 transform)
{
if (this.localAnchor != null)
{
return;
}
this.localAnchor = new ARAnchor(transform);
this.sceneView.Session.AddAnchor(this.localAnchor);
// Put the local anchor in the anchorVisuals list with a special key
AnchorVisual visual = new AnchorVisual
{
identifier = this.unsavedAnchorId,
localAnchor = this.localAnchor
};
this.anchorVisuals[visual.identifier] = visual;
this.PlaceCube(this.localAnchor);
this.UpdateMainStatusTitle("Create Cloud Anchor (once at 100%)");
}
public SnapshotAnchor(NSData imageData, NMatrix4 transform) : base("snapshot", transform)
{
this.ImageData = imageData;
}
private void SetNewVirtualObjectPosition(VirtualObject virtualObject, SCNVector3 position, NMatrix4 cameraTransform)
{
var cameraWorldPos = cameraTransform.Translation();
var cameraToPosition = position.Subtract(cameraWorldPos);
// Limit the distance of the object from the camera to a maximum of 10m
if (cameraToPosition.LengthFast > 10)
{
cameraToPosition = cameraToPosition.Normalized() * 10;
}
virtualObject.Position = cameraWorldPos + cameraToPosition;
virtualObject.RecentVirtualObjectDistances.Clear();
}
public void Ctors()
{
#if NET
var id = NMatrix4.Identity;
#else
Matrix4 id = Matrix4.Identity;
#endif
var V3 = new Vector3(1, 2, 3);
using (var obj = new MDLTransform(id)) {
Asserts.AreEqual(Vector3.Zero, obj.Translation, "Translation");
Asserts.AreEqual(Vector3.One, obj.Scale, "Scale");
Asserts.AreEqual(Vector3.Zero, obj.Rotation, "Rotation");
Asserts.AreEqual(id, obj.Matrix, "Matrix");
if (TestRuntime.CheckXcodeVersion(8, 0))
{
Asserts.AreEqual(false, obj.ResetsTransform, "ResetsTransform");
}
obj.Translation = V3;
Asserts.AreEqual(V3, obj.Translation, "Translation 2");
}
if (TestRuntime.CheckXcodeVersion(8, 0))
{
using (var obj = new MDLTransform(id, true)) {
Asserts.AreEqual(Vector3.Zero, obj.Translation, "Translation");
Asserts.AreEqual(Vector3.One, obj.Scale, "Scale");
Asserts.AreEqual(Vector3.Zero, obj.Rotation, "Rotation");
Asserts.AreEqual(id, obj.Matrix, "Matrix");
Asserts.AreEqual(true, obj.ResetsTransform, "ResetsTransform");
obj.Translation = V3;
Asserts.AreEqual(V3, obj.Translation, "Translation 2");
}
}
using (var obj = new MDLTransform(id)) {
V3 *= 2;
obj.Scale = V3;
Asserts.AreEqual(V3, obj.Scale, "Scale 2");
}
using (var obj = new MDLTransform(id)) {
V3 *= 2;
obj.Rotation = V3;
Asserts.AreEqual(V3, obj.Rotation, "Rotation 2");
}
using (var obj = new MDLTransform(id)) {
V3 *= 2;
obj.Rotation = V3;
Asserts.AreEqual(V3, obj.Rotation, "Rotation 2");
}
#if NET
var m4 = new NMatrix4(
4, 0, 0, 2,
0, 3, 0, 3,
0, 0, 2, 4,
0, 0, 0, 1);
#else
var m4 = new Matrix4(
4, 0, 0, 0,
0, 3, 0, 0,
0, 0, 2, 0,
2, 3, 4, 1);
#endif
using (var obj = new MDLTransform(m4)) {
Asserts.AreEqual(Vector3.Zero, obj.Rotation, "Rotation 3");
Asserts.AreEqual(new Vector3(4, 3, 2), obj.Scale, "Scale 3");
Asserts.AreEqual(new Vector3(2, 3, 4), obj.Translation, "Translation 3");
Asserts.AreEqual(m4, obj.Matrix, 0.0001f, "Matrix 3");
}
#if !NET
var m4x4 = new MatrixFloat4x4(
4, 0, 0, 2,
0, 3, 0, 3,
0, 0, 2, 4,
0, 0, 0, 1);
using (var obj = new MDLTransform(m4x4)) {
Asserts.AreEqual(Vector3.Zero, obj.Rotation, "Rotation 4");
Asserts.AreEqual(new Vector3(4, 3, 2), obj.Scale, "Scale 4");
Asserts.AreEqual(new Vector3(2, 3, 4), obj.Translation, "Translation 4");
#if NET
Asserts.AreEqual(m4x4, obj.Matrix, 0.0001f, "Matrix4x4 4");
#else
Asserts.AreEqual(m4x4, obj.GetMatrix4x4(), 0.0001f, "Matrix4x4 4");
#endif
Asserts.AreEqual(m4x4, CFunctions.GetMatrixFloat4x4(obj, "matrix"), 0.0001f, "Matrix4x4-native 4");
}
#endif
}
public void Properties()
{
using (var obj = new MDLStereoscopicCamera()) {
Assert.AreEqual(63f, obj.InterPupillaryDistance, "InterPupillaryDistance");
Assert.AreEqual(0f, obj.LeftVergence, "LeftVergence");
Assert.AreEqual(0f, obj.RightVergence, "RightVergence");
Assert.AreEqual(0f, obj.Overlap, "Overlap");
#if NET
var mat1 = new Matrix4(
1, 0, 0, -0.63f,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1);
#else
var mat1 = new Matrix4(
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
-0.63f, 0, 0, 1);
#endif
Asserts.AreEqual(mat1, obj.LeftViewMatrix, "LeftViewMatrix");
#if NET
Asserts.AreEqual(mat1, CFunctions.GetMatrixFloat4x4(obj, "leftViewMatrix"), "LeftViewMatrix4x4 native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat1), obj.LeftViewMatrix4x4, "LeftViewMatrix4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat1), CFunctions.GetMatrixFloat4x4(obj, "leftViewMatrix"), "LeftViewMatrix4x4 native");
#endif
#if NET
var mat2 = new NMatrix4(
1, 0, 0, 0.63f,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1);
#else
var mat2 = new Matrix4(
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0.63f, 0, 0, 1);
#endif
Asserts.AreEqual(mat2, obj.RightViewMatrix, "RightViewMatrix");
#if NET
Asserts.AreEqual(mat2, CFunctions.GetMatrixFloat4x4(obj, "rightViewMatrix"), "RightViewMatrix4x4 native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat2), obj.RightViewMatrix4x4, "RightViewMatrix4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat2), CFunctions.GetMatrixFloat4x4(obj, "rightViewMatrix"), "RightViewMatrix4x4 native");
#endif
#if NET
var mat3 = new Matrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.0002f, -0.20002f,
0, 0, -1, 0);
#else
var mat3 = new Matrix4(
1.308407f, 0, 0, 0,
0, 1.962611f, 0, 0,
0, 0, -1.0002f, -1,
0, 0, -0.20002f, 0);
#endif
Asserts.AreEqual(mat3, obj.LeftProjectionMatrix, 0.0001f, "LeftProjectionMatrix");
#if NET
Asserts.AreEqual(mat3, CFunctions.GetMatrixFloat4x4(obj, "leftProjectionMatrix"), 0.0001f, "LeftProjectionMatrix4x4 native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat3), obj.LeftProjectionMatrix4x4, 0.0001f, "LeftProjectionMatrix4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat3), CFunctions.GetMatrixFloat4x4(obj, "leftProjectionMatrix"), 0.0001f, "LeftProjectionMatrix4x4 native");
#endif
Asserts.AreEqual(mat3, obj.RightProjectionMatrix, 0.0001f, "RightProjectionMatrix");
#if NET
Asserts.AreEqual(mat3, CFunctions.GetMatrixFloat4x4(obj, "rightProjectionMatrix"), 0.0001f, "RightProjectionMatrix4x4 native");
#else
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat3), obj.RightProjectionMatrix4x4, 0.0001f, "RightProjectionMatrix4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)mat3), CFunctions.GetMatrixFloat4x4(obj, "rightProjectionMatrix"), 0.0001f, "RightProjectionMatrix4x4 native");
#endif
}
}
internal static SCNVector3?UnprojectPointLocal(this ARSCNView self, CGPoint point, NMatrix4 planeTransform)
{
var result = self.Unproject(point, planeTransform);
// Convert the result into the plane's local coordinate system.
var pt = new SCNVector4(result.X, result.Y, result.Z, 1);
var invertedPlane = planeTransform.ToSCNMatrix4();
invertedPlane.Invert();
var localResult = invertedPlane.Times(pt);
return(localResult.Xyz);
}
private SCNVector3 PositionFromTransform(NMatrix4 xform)
{
return(new SCNVector3(xform.M14, xform.M24, xform.M34));
}
public static SCNVector3 Translation(this NMatrix4 self)
{
return(new SCNVector3(self.M14, self.M24, self.M34));
}
public void Ctors()
{
Vector2 V2;
Vector3 V3;
Vector4 V4;
#if NET
NMatrix4 M4;
#else
Matrix4 M4;
MatrixFloat4x4 M4x4;
#endif
MDLTextureSampler tsv;
NSUrl url;
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion)) {
Assert.AreEqual(MDLMaterialSemantic.AmbientOcclusion, obj.Semantic, "1 Semantic");
Assert.IsNull(obj.Color, "1 Color");
Asserts.AreEqual(Vector2.Zero, obj.Float2Value, "1 Float2Value");
Asserts.AreEqual(Vector3.Zero, obj.Float3Value, "1 Float3Value");
Asserts.AreEqual(Vector4.Zero, obj.Float4Value, "1 Float4Value");
Assert.AreEqual(0.0f, obj.FloatValue, "1 FloatValue");
Asserts.AreEqual(Matrix4.Identity, obj.Matrix4x4, "1 Matrix4x4");
Assert.AreEqual("name", obj.Name, "1 Name");
Assert.IsNull(obj.StringValue, "1 StringValue");
Assert.IsNull(obj.TextureSamplerValue, "1 TextureSamplerValue");
Assert.AreEqual(MDLMaterialPropertyType.Float, obj.Type, "1 Type");
Assert.IsNull(obj.UrlValue, "1 UrlValue");
V2 = new Vector2(1, 2);
V3 = new Vector3(3, 4, 5);
V4 = new Vector4(6, 7, 8, 9);
#if NET
M4 = new NMatrix4(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
#else
M4 = new Matrix4(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
M4x4 = new MatrixFloat4x4(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
#endif
tsv = new MDLTextureSampler();
url = new NSUrl("http://xamarin.com");
obj.Semantic = MDLMaterialSemantic.Anisotropic;
Assert.AreEqual(MDLMaterialSemantic.Anisotropic, obj.Semantic, "2 Semantic");
obj.Color = UIColor.Blue.CGColor;
Assert.AreEqual(UIColor.Blue.CGColor.ToString(), obj.Color.ToString(), "2 Color");
obj.Float2Value = V2;
Asserts.AreEqual(V2, obj.Float2Value, "2 Float2Value");
obj.Float3Value = V3;
Asserts.AreEqual(V3, obj.Float3Value, "2 Float3Value");
obj.Float4Value = V4;
Asserts.AreEqual(V4, obj.Float4Value, "2 Float4Value");
obj.FloatValue = 3.14f;
Assert.AreEqual(3.14f, obj.FloatValue, "2 FloatValue");
obj.Matrix4x4 = M4;
// It looks like the Matrix4 setter is ignored, assigning a matrix
// doesn't work in Xcode either.
Asserts.AreEqual(Matrix4.Identity, obj.Matrix4x4, "2 Matrix4x4");
obj.Name = "new name";
Assert.AreEqual("new name", obj.Name, "2 Name");
obj.StringValue = "string value";
Assert.AreEqual("string value", obj.StringValue, "2 StringValue");
obj.TextureSamplerValue = tsv;
Assert.AreEqual(tsv.Handle, obj.TextureSamplerValue.Handle, "2 TextureSamplerValue");
Assert.AreEqual(MDLMaterialPropertyType.Texture, obj.Type, "2 Type");
// Looks like the URLValue can't change after construction
obj.UrlValue = url;
if (TestRuntime.CheckXcodeVersion(9, 0))
{
Assert.AreSame(url, obj.UrlValue, "2 UrlValue");
}
else
{
Assert.IsNull(obj.UrlValue, "2 UrlValue");
}
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, url)) {
Assert.AreEqual(url.Handle, obj.UrlValue.Handle, "3 UrlValue");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, V3)) {
Asserts.AreEqual(V3, obj.Float3Value, "4 Float3Value");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, tsv)) {
Assert.AreEqual(tsv.Handle, obj.TextureSamplerValue.Handle, "5 TextureSamplerValue");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, "string value")) {
Assert.AreEqual("string value", obj.StringValue, "6 StringValue");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, M4)) {
Asserts.AreEqual(M4, obj.Matrix4x4, "7 Matrix4x4");
#if NET
Asserts.AreEqual(CFunctions.GetMatrixFloat4x4(obj, "matrix4x4"), obj.Matrix4x4, "7b MatrixFloat4x4");
Asserts.AreEqual(M4, obj.Matrix4x4, "7c MatrixFloat4x4");
#else
Asserts.AreEqual(CFunctions.GetMatrixFloat4x4(obj, "matrix4x4"), obj.MatrixFloat4x4, "7b MatrixFloat4x4");
Asserts.AreEqual(MatrixFloat4x4.Transpose((MatrixFloat4x4)M4), obj.MatrixFloat4x4, "7c MatrixFloat4x4");
#endif
}
#if !NET
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, M4x4)) {
Asserts.AreEqual(CFunctions.GetMatrixFloat4x4(obj, "matrix4x4"), obj.MatrixFloat4x4, "7' MatrixFloat4x4");
Asserts.AreEqual(M4x4, obj.MatrixFloat4x4, "7'b MatrixFloat4x4");
}
#endif
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, V4)) {
Asserts.AreEqual(V4, obj.Float4Value, "8 Float4Value");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, UIColor.Red.CGColor)) {
Assert.AreEqual(UIColor.Blue.CGColor.ToString(), obj.Color.ToString(), "9 Color");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, V2)) {
Asserts.AreEqual(V2, obj.Float2Value, "10 Float2Value");
}
using (var obj = new MDLMaterialProperty("name", MDLMaterialSemantic.AmbientOcclusion, 3.1415f)) {
Assert.AreEqual(3.1415f, obj.FloatValue, "11 FloatValue");
}
}
// Important: This is transposed from SCNMatrix4! (See, for instance, Ray.DragPlaneTransform() functions) internal static Vector3 Position(this NMatrix4 self) => self.Column3.Xyz;
private void SetPosition(VirtualObject virtualObject, SCNVector3 position, bool instantly, bool filterPosition, NMatrix4 cameraTransform)
{
if (instantly)
{
SetNewVirtualObjectPosition(virtualObject, position, cameraTransform);
}
else
{
UpdateVirtualObjectPosition(virtualObject, position, filterPosition, cameraTransform);
}
}
public void UpdateVirtualObjectPosition(VirtualObject virtualObject, SCNVector3 position, bool filterPosition, NMatrix4 cameraTransform)
{
var cameraWorldPos = cameraTransform.Translation();
var cameraToPosition = position.Subtract(cameraWorldPos);
// Limit the distance of the object from the camera to a maximum of 10m
if (cameraToPosition.LengthFast > 10)
{
cameraToPosition = cameraToPosition.Normalized() * 10;
}
// Compute the average distance of the object from the camera over the last ten
// updates. If filterPosition is true, compute a new position for the object
// with this average. Notice that the distance is applied to the vector from
// the camera to the content, so it only affects the percieved distance of the
// object - the averaging does _not_ make the content "lag".
var hitTestResultDistance = cameraToPosition.LengthFast;
virtualObject.RecentVirtualObjectDistances.Add(hitTestResultDistance);
virtualObject.RecentVirtualObjectDistances.KeepLast(10);
if (filterPosition)
{
var averageDistance = virtualObject.RecentVirtualObjectDistances.Average();
var averagedDistancePos = cameraWorldPos + cameraToPosition.Normalized() * averageDistance;
virtualObject.Position = averagedDistancePos;
}
else
{
virtualObject.Position = cameraWorldPos + cameraToPosition;
}
}
public static SCNVector3 ToPosition(this NMatrix4 transform)
{
return(new SCNVector3(transform.M14, transform.M24, transform.M34));
}
public static SCNVector3 PositionFromTransform(NMatrix4 transform)
{
var pFromComponents = new SCNVector3(transform.M14, transform.M24, transform.M34);
return(pFromComponents);
}
internal PlaneDrag(NMatrix4 planeTransform, NVector3 offset)
{
this.PlaneTransform = planeTransform;
this.Offset = offset;
}