private void UpdateForDisplayImmediatelyGroundOnly()
{
long activeSurfaceId = xr.GetActiveSurfaceId();
XRSurface activeSurface = xr.GetSurface(activeSurfaceId);
bool activeSurfaceIsValidGround = activeSurface != XRSurface.NO_SURFACE &&
activeSurface.type == XRSurface.Type.HORIZONTAL_PLANE;
if (!activeSurfaceIsValidGround)
{
return;
}
Vector3 centerVertex = GetVertexCenter(activeSurface.mesh);
if (surfaceFound)
{
if (centerVertex.y < groundHeightGuess)
{
groundHeightGuess = centerVertex.y;
SetHeight(groundHeightGuess);
}
}
else
{
if (centerVertex.y < Camera.main.transform.position.y - MIN_GROUND_DISTANCE_FROM_PHONE)
{
groundHeightGuess = centerVertex.y;
SetHeight(groundHeightGuess);
onSurfaceAttach.Invoke();
surfaceFound = true;
}
}
}
public override bool Equals(object o)
{
if (!(o is XRSurface))
{
return(false);
}
XRSurface s = (XRSurface)o;
return(id == s.id && type == s.type && rotation == s.rotation && mesh == s.mesh);
}
private bool IsValidGroundSurface(XRSurface surface)
{
if (surface.type != XRSurface.Type.HORIZONTAL_PLANE)
{
return(false);
}
Vector3 centerVertex = GetVertexCenter(surface.mesh);
// New ground surface must be:
// -below a certain cutoff
// -lowest surface seen so far (and at least MIN_GROUND_CHANGE_DISTANCE lower)
bool surfaceIsGroundHeight = centerVertex.y < Camera.main.transform.position.y - MIN_GROUND_DISTANCE_FROM_PHONE;
bool surfaceIsLowestSurface = !surfaceFound || centerMap[surfaceId].y - centerVertex.y > MIN_GROUND_CHANGE_DISTANCE;
return(surfaceIsGroundHeight && surfaceIsLowestSurface);
}
/** This method doesn't cache its result.
*/
private Dictionary <long, XRSurface> GetSurfacesFromXRResponse()
{
var r = GetCurrentReality();
var surfaceSet = r.getXRResponse().getSurfaces().getSet();
var surfaces = surfaceSet.getSurfaces();
var faces = surfaceSet.getFaces();
var vertexList = surfaceSet.getVertices();
var textureCoordsList = surfaceSet.getTextureCoords();
// Boundary vertices are available but not used right now
var surfacesToRemove = new HashSet <long>(xrSurfaceMap_.Keys);
foreach (var surface in surfaces)
{
long id = surface.getId().getEventTimeMicros();
surfacesToRemove.Remove(id);
var quat = surface.getNormal().getRotation();
// Extract basic info about this mesh.
int beginFaceIndex = surface.getFacesBeginIndex();
int endFaceIndex = surface.getFacesEndIndex();
int beginVerticesIndex = surface.getVerticesBeginIndex();
int endVerticesIndex = surface.getVerticesEndIndex();
// Support texture coords when the device has it (e.g. ARKit >1.5)
int beginTextureCoordsIndex = 0;
bool hasTextureCoords = false;
if (surface.getTextureCoordsEndIndex() > 0)
{
hasTextureCoords = true;
beginTextureCoordsIndex = surface.getTextureCoordsBeginIndex();
}
// Build the vertex and normal arrays.
int nVertices = endVerticesIndex - beginVerticesIndex;
Vector3[] vertices = new Vector3[nVertices];
Vector3[] normals = new Vector3[nVertices];
Vector2[] uvs = new Vector2[nVertices];
for (int j = 0; j < nVertices; ++j)
{
int vertexIndex = beginVerticesIndex + j;
vertices[j] = new Vector3(
vertexList.get(vertexIndex).getX(),
vertexList.get(vertexIndex).getY(),
vertexList.get(vertexIndex).getZ());
normals[j] = Vector3.up;
float u = vertices[j][0];
float v = vertices[j][2];
if (hasTextureCoords)
{
int textureIndex = beginTextureCoordsIndex + j;
u = textureCoordsList.get(textureIndex).getU();
v = textureCoordsList.get(textureIndex).getV();
}
uvs[j] = new Vector2(u, v);
}
// We can just directly copy over the triangles (they are stored in consecutive sets of three
// vertex indices) as long as we offset the vertex indices.
int nFaces = endFaceIndex - beginFaceIndex;
int[] triangles = new int[nFaces * 3];
for (int j = 0; j < nFaces; ++j)
{
int v0 = faces.get(j + beginFaceIndex).getV0() - beginVerticesIndex;
int v1 = faces.get(j + beginFaceIndex).getV1() - beginVerticesIndex;
int v2 = faces.get(j + beginFaceIndex).getV2() - beginVerticesIndex;
triangles[3 * j] = v0;
triangles[3 * j + 1] = v1;
triangles[3 * j + 2] = v2;
}
var surfaceType = GetSurfaceType(surface.getSurfaceType());
var surfaceRotation = new Quaternion(quat.getX(), quat.getY(), quat.getZ(), quat.getW());
Mesh mesh = null;
if (xrSurfaceMap_.ContainsKey(id))
{
XRSurface existingSurface = xrSurfaceMap_[id];
mesh = existingSurface.mesh;
mesh.Clear();
}
else
{
mesh = new Mesh();
}
mesh.vertices = vertices;
mesh.normals = normals;
mesh.uv = uvs;
mesh.triangles = triangles;
xrSurfaceMap_[id] = new XRSurface(id, surfaceType, surfaceRotation, mesh);
}
// Remove surfaces we no longer receive from the map
foreach (long surfaceId in surfacesToRemove)
{
xrSurfaceMap_.Remove(surfaceId);
}
return(xrSurfaceMap_);
}
// Returns true if surface was updated
private bool UpdateSurface()
{
long activeSurfaceId = xr.GetActiveSurfaceId();
XRSurface activeSurface = xr.GetSurface(activeSurfaceId);
if (activeSurface.mesh == null)
{
return(false);
}
// Update center map height if already in map
if (centerMap.ContainsKey(activeSurfaceId))
{
Vector3 centerVertex = GetVertexCenter(activeSurface.mesh);
Vector3 previousCenter = centerMap[activeSurfaceId];
Vector3 normal = Vector3.Cross(
activeSurface.mesh.vertices[0] - activeSurface.mesh.vertices[1],
activeSurface.mesh.vertices[0] - activeSurface.mesh.vertices[2]
);
normal.Normalize();
Vector3 newCenter = previousCenter + normal * Vector3.Dot(centerVertex - previousCenter, normal);
centerMap[activeSurfaceId] = newCenter;
}
if (surfaceId == activeSurfaceId)
{
return(false);
}
if (groundOnly && !IsValidGroundSurface(activeSurface))
{
return(false);
}
if (surfaceFound && lockToFirstSurface)
{
return(false);
}
if (!centerMap.ContainsKey(activeSurfaceId))
{
centerMap.Add(activeSurfaceId, GetVertexCenter(activeSurface.mesh));
}
bool triggerReady = !displayImmediately && !surfaceFound;
bool triggerAttach = !surfaceFound;
SetHidden(false);
transform.position = centerMap[activeSurfaceId];
surfaceId = activeSurfaceId;
surfaceFound = true;
if (rotatePlaneWithDetectedNormal)
{
transform.localRotation = originalRotation_;
transform.Rotate(activeSurface.rotation.eulerAngles);
}
if (deformToSurface)
{
DeformMesh(activeSurface.mesh);
}
if (triggerReady)
{
if (onSurfaceReady != null)
{
onSurfaceReady.Invoke();
}
}
if (triggerAttach)
{
if (onSurfaceAttach != null)
{
onSurfaceAttach.Invoke();
}
}
else
{
if (onSurfaceSwitch != null)
{
onSurfaceSwitch.Invoke();
}
}
return(true);
}
