/**
* Set up the data object with empty UltrasoundPoint%s representing the points
* that need to be scanned.
*
* This is analagous to setting up the view frustum in traditional 3D graphics.
*/
private void EstablishScanningPlane(ref UltrasoundScanData data)
{
OnionLogger.globalLog.PushInfoLayer("Pre-populating data");
UltrasoundProbeConfiguration config = data.GetProbeConfig();
// nearZ and farZ represent near and far clipping "planes" (they're really arcs)
float nearZ = config.GetMinScanDistance();
float farZ = config.GetMaxScanDistance();
float arcSizeDegrees = config.GetArcSizeInDegrees();
int scanlines = config.GetNumberOfScanlines();
int pointsPerScanline = config.GetPointsPerScanline();
for (int i = 0; i < scanlines; ++i)
{
UltrasoundScanline scanline = new UltrasoundScanline(config.GetPosition());
float angleInDegrees = -(arcSizeDegrees / 2) + i * arcSizeDegrees / (scanlines - 1);
float angleInRadians = Mathf.Deg2Rad * angleInDegrees;
Vector2 trajectory = new Vector2(Mathf.Sin(angleInRadians), Mathf.Cos(angleInRadians));
for (int j = 0; j < pointsPerScanline; ++j)
{
float d = nearZ + j * (farZ - nearZ) / (pointsPerScanline - 1);
Vector2 positionOnPlane = d * trajectory;
Vector3 positionInWorldSpace = WorldSpaceFromProjectedPosition(positionOnPlane, config);
UltrasoundPoint point = new UltrasoundPoint(positionInWorldSpace, positionOnPlane);
scanline.AddUltrasoundPoint(point);
}
data.AddScanline(scanline);
}
OnionLogger.globalLog.PopInfoLayer();
}
/// Checks an individual scanline for valid organs.
/// @param scanline The UltrasoundScanline being tested
/// @return A list of organs that are on the scanline.
private IList <GameObject> ValidOrgansOnScanline(UltrasoundScanline scanline)
{
IList <UltrasoundPoint> points = scanline.GetPoints();
#if UNITY_EDITOR
UltrasoundDebug.Assert(points.Count > 0, "Zero points on scanline", this);
#endif
Vector3 terminalPoint = points[points.Count - 1].GetWorldSpaceLocation();
Ray ray = new Ray(scanline.origin, terminalPoint - scanline.origin);
float raycastDistance = (terminalPoint - scanline.origin).magnitude;
RaycastHit[] hits = Physics.RaycastAll(ray, raycastDistance);
IList <GameObject> validOrgans = new List <GameObject>();
foreach (RaycastHit hit in hits)
{
if (allOrgansInScene.Contains(hit.collider.gameObject))
{
validOrgans.Add(hit.collider.gameObject);
}
}
return(validOrgans);
}
public UltrasoundScanData SendScanData()
{
UltrasoundProbeConfiguration config = new UltrasoundProbeConfiguration();
config.SetMaxScanDistance(MAX_Y);
config.SetMinScanDistance(MIN_Y);
UltrasoundScanData data = new UltrasoundScanData(config);
for (float i = MIN_X; i <= MAX_X; i += STEPSIZE)
{
UltrasoundScanline scanline = new UltrasoundScanline(config.GetPosition());
for (float j = MIN_Y; j <= MAX_Y; j += STEPSIZE)
{
UltrasoundPoint p = new UltrasoundPoint(Vector3.zero, new Vector2(i * (j / MAX_Y), j));
p.SetBrightness(Random.Range(0f, 1f)); // Generate noise.
scanline.AddUltrasoundPoint(p);
}
data.AddScanline(scanline);
}
return(data);
}
