/*--------------------------------------------------------------------------------------------*/
private void UpdateWithPlane(PlaneState pPlane) {
Transform localTx = vSettings.InputTransform;
Transform camTx = vSettings.CameraTransform;
Vector3 camPosLocal = localTx.InverseTransformPoint(camTx.position);
Vector3 camDirLocal = localTx.InverseTransformDirection(camTx.rotation*Vector3.forward);
Vector3 planePosLocal = localTx.InverseTransformPoint(pPlane.PointWorld);
Vector3 planeNormLocal = localTx.InverseTransformDirection(pPlane.NormalWorld);
if ( vSettings.UseMouseForTesting ) {
Vector3 mousePos = UnityEngine.Input.mousePosition;
mousePos.x -= Screen.width/2;
mousePos.y -= Screen.height/2;
mousePos /= Screen.width;
camPosLocal += mousePos*vSettings.MousePositionMultiplier;
}
float numer = Vector3.Dot(planePosLocal-camPosLocal, planeNormLocal);
float denom = Vector3.Dot(camDirLocal, planeNormLocal);
if ( denom == 0 ) { //exactly parallel (very unlikely scenario)
return;
}
float t = numer/denom;
pPlane.IsHit = true;
pPlane.HitDist = Math.Abs(t);
pPlane.HitPosition = camPosLocal+camDirLocal*t;
}
////////////////////////////////////////////////////////////////////////////////////////////////
/*--------------------------------------------------------------------------------------------*/
public void UpdateWithPlanes(PlaneState[] pPlanes)
{
IsAvailable = false;
Position = Vector3.zero;
Size = 0;
if ( pPlanes.Length == 0 ) {
return;
}
////
float minDist = float.MaxValue;
PlaneState nearest = null;
foreach ( PlaneState plane in pPlanes ) {
UpdateWithPlane(plane);
if ( plane.IsHit && plane.HitDist < minDist ) {
minDist = plane.HitDist;
nearest = plane;
}
}
if ( nearest == null ) {
return;
}
////
nearest.IsNearest = true;
IsAvailable = true;
Position = nearest.HitPosition;
Size = vSettings.CursorSize;
}