private void FindPoster(int pixelWidth, int pixelHeight)
{
bool foundPoster = false;
try
{
if (posterSystemAPI == null)
{
posterSystemAPI = new PosterDetectorAPI();
}
// update the poster data to the plugin
if (posterTextureDataDirty && posterTextureData != null && posterTextureData.Length > 0)
{
GCHandle handle = default(GCHandle);
try
{
handle = GCHandle.Alloc(posterTextureData, GCHandleType.Pinned);
IntPtr ptr = handle.AddrOfPinnedObject();
posterTextureDataDirty = !posterSystemAPI.SetPoster(ptr, posterTextureDataWidth, posterTextureDataHeight);
}
finally
{
if (handle != default(GCHandle))
{
handle.Free();
}
}
}
Vector2[] pixelPositions;
var result = posterSystemAPI.TryDetectPoster(cameraImagePtrToData, pixelWidth, pixelHeight, out pixelPositions, false);
if (result && pixelPositions != null)
{
foundPoster = true;
for (int i = 0; i < 4; i++)
{
var pixelLocation = new PosterCornerLocation();
pixelLocation.Id = (PosterCornerLocation.CornerLocationId)i;
pixelLocation.PixelX = pixelPositions[i].x;
pixelLocation.PixelY = pixelPositions[i].y;
posterLocationHandler.OnCornerLocated(pixelLocation);
}
}
}
catch (Exception ex)
{
Debug.Log(ex.ToString());
}
if (foundPoster)
{
this.UpdateVersion++;
}
}
public void OnCornerLocated(PosterCornerLocation location)
{
Vector2 locationUV = GetLocationUV(location);
Ray rayThroughUV = GetLocationRay(locationUV);
if ((rayThroughUV.origin == Vector3.zero) ||
(rayThroughUV.direction == Vector3.zero))
{
// wierd position, ignore it
return;
}
Debug.Log("Corner Located! Id=" + location.Id + "\nX=" + location.PixelX + " Y=" + location.PixelY);
if (locationCorners[(int)location.Id] == null)
{
locationCorners[(int)location.Id] = new WorldPosFromRays((int)location.Id);
}
locationCorners[(int)location.Id].AddRay(rayThroughUV, this.cameraPos, this.cameraProj);
}
private Vector2 GetLocationUV(PosterCornerLocation location)
{
return(new Vector2(location.PixelX / (this.imagePixelWidth - 1), location.PixelY / (this.imagePixelHeight - 1)));
}