void OnPointCloudChanged(ARPointCloud pointCloud)
{
var points = s_Vertices;
pointCloud.GetPoints(points, Space.Self);
mesh.Clear();
mesh.SetVertices(points);
var indices = new int[points.Count];
for (int i = 0; i < points.Count; ++i)
{
indices[i] = i;
}
mesh.SetIndices(indices, MeshTopology.Points, 0);
var meshFilter = GetComponent <MeshFilter>();
if (meshFilter != null)
{
meshFilter.sharedMesh = mesh;
}
}
void OnPointCloudUpdated(PointCloudUpdatedEventArgs eventArgs)
{
if (pointCloud == null)
{
GameObject newGameObject;
if (pointCloudPrefab != null)
{
newGameObject = Instantiate(pointCloudPrefab, m_SessionOrigin.trackablesParent);
newGameObject.transform.localPosition = Vector3.zero;
newGameObject.transform.localRotation = Quaternion.identity;
newGameObject.transform.localScale = Vector3.one;
}
else
{
newGameObject = new GameObject();
newGameObject.transform.SetParent(m_SessionOrigin.trackablesParent, false);
}
newGameObject.layer = gameObject.layer;
pointCloud = newGameObject.GetComponent <ARPointCloud>();
if (pointCloud == null)
{
pointCloud = newGameObject.AddComponent <ARPointCloud>();
}
}
pointCloud.OnUpdated();
if (pointCloudUpdated != null)
{
pointCloudUpdated(new ARPointCloudUpdatedEventArgs(pointCloud));
}
}
void OnPointCloudChanged(ARPointCloud pointCloud)
{
var points = s_Vertices;
pointCloud.GetPoints(points, Space.Self);
int numParticles = points.Count;
if (m_Particles == null || m_Particles.Length < numParticles)
{
m_Particles = new ParticleSystem.Particle[numParticles];
}
var color = m_ParticleSystem.main.startColor.color;
var size = m_ParticleSystem.main.startSize.constant;
for (int i = 0; i < numParticles; ++i)
{
m_Particles[i].startColor = color;
m_Particles[i].startSize = size;
m_Particles[i].position = points[i];
m_Particles[i].remainingLifetime = 1f;
}
// Remove any existing particles by setting remainingLifetime
// to a negative value.
for (int i = numParticles; i < m_NumParticles; ++i)
{
m_Particles[i].remainingLifetime = -1f;
}
m_ParticleSystem.SetParticles(m_Particles, Math.Max(numParticles, m_NumParticles));
m_NumParticles = numParticles;
}
void OnSessionDestroyed()
{
if (pointCloud != null)
{
Destroy(pointCloud.gameObject);
pointCloud = null;
}
}
void OnPointCloudChanged(ARPointCloud pointCloud)
{
var points = s_Vertices;
pointCloud.GetPoints(points, Space.Self);
int numPoints = points.Count;
// Get the number of existing particles
int numParticles = m_ParticleSystem.GetParticles(m_Particles);
// Count how many particles are alive
int numAliveParticles = 0;
for (int i = 0; i < numParticles; i++)
{
if (m_Particles[i].remainingLifetime > 0)
{
numAliveParticles++;
}
}
// Emit enough particles to match the number of points
if (numAliveParticles < numPoints)
{
var emitCount = numPoints - numAliveParticles;
m_ParticleSystem.Emit(emitCount);
}
// Resize the particle array if there's not enough room
if (m_Particles.Length < numPoints)
{
m_Particles = new ParticleSystem.Particle[numPoints];
}
// Get the particles again, so we have the newly emitted particles
numParticles = m_ParticleSystem.GetParticles(m_Particles);
// Update the positions of all the particles to match the points
for (int i = 0; i < numParticles && i < numPoints; ++i)
{
m_Particles[i].position = points[i];
}
// Remove any existing particles by setting remainingLifetime
// to a negative value.
for (int i = numPoints; i < numParticles; ++i)
{
m_Particles[i].remainingLifetime = -1f;
}
m_ParticleSystem.SetParticles(m_Particles, numParticles);
}
/// <summary>
/// Constructor for the <see cref="ARPointCloudUpdatedEventArgs"/>. This is normally only used by an <see cref="ARSessionOrigin"/>.
/// </summary>
/// <param name="pointCloud">The <see cref="ARPointCloud"/> whose update triggered this event.</param>
public ARPointCloudUpdatedEventArgs(ARPointCloud pointCloud)
{
this.pointCloud = pointCloud;
}
