/// <summary>Calculates a camera position which will show the complet object.</summary>
/// <param name="nif_obj">an object handle from NIFAPI</param>
/// <param name="pos">which side will be viewed</param>
/// <remarks>This is surely just the mathematical view.
/// It's still possible that the object is shown from top if you choose "Front".
/// ! BUG ! distance isn't always correct
/// </remarks>
public void targetObject(IntPtr nif_obj, e_viewPosition pos)
{
if (nif_obj == IntPtr.Zero) return;
float x1, y1, z1, x2, y2, z2;
x1 = y1 = z1 = x2 = y2 = z2 = 0; // just to keep compiler happy
bool res = NIF.NIFAPI.GetBoundingBox(nif_obj, ref x1, ref y1, ref z1, ref x2, ref y2, ref z2);
if (!res) return;
Reset();
moveGlobal((x1+ x2)/2.0f, (y1+ y2)/2.0f, (z1+ z2)/2.0f);
float distancemin = 50; // atleast near-clipping plane must be reached
float distanceX = ( x2 - x1 );
float distanceY = ( y2 - y1 );
float distanceZ = ( z2 - z1 );
distanceX = (distanceX/2)/ (float) System.Math.Tan(45/2 * 3.14 / 180);
distanceY = (distanceY/2)/ (float) System.Math.Tan(45/2 * 3.14 / 180);
distanceZ = (distanceZ/2)/ (float) System.Math.Tan(45/2 * 3.14 / 180);
distanceX = System.Math.Max(distancemin,distanceX);
distanceY = System.Math.Max(distancemin,distanceY);
distanceZ = System.Math.Max(distancemin,distanceZ);
switch (pos)
{
case e_viewPosition.Top:
moveLocal(0,0,-System.Math.Max(distanceX,distanceY));
break;
case e_viewPosition.Front:
rotateLocal(-90.0f,0.0f,0.0f,1.0f);
rotateLocal(-90.0f,1.0f,0.0f,0.0f);
moveLocal(0,0,-System.Math.Max(distanceY,distanceZ));
break;
case e_viewPosition.Below:
rotateLocal(180.0f,1.0f,0.0f,0.0f);
moveLocal(0,0,-System.Math.Max(distanceX,distanceY));
break;
case e_viewPosition.Back:
rotateLocal(90.0f,0.0f,0.0f,1.0f);
rotateLocal(-90.0f,1.0f,0.0f,0.0f);
moveLocal(0,0,-System.Math.Max(distanceY,distanceZ));
break;
case e_viewPosition.Right:
rotateLocal(-90.0f,1.0f,0.0f,0.0f);
moveLocal(0,0,-System.Math.Max(distanceX,distanceY));
break;
case e_viewPosition.Left:
rotateLocal(90.0f,1.0f,0.0f,0.0f);
rotateLocal(180.0f,0.0f,0.0f,1.0f);
moveLocal(0,0,-System.Math.Max(distanceX,distanceY));
break;
}
}
/// <summary>Calculates a camera position which will show the complet object.</summary>
/// <param name="nif_obj">an object handle from NIFAPI</param>
/// <param name="pos">which side will be viewed</param>
/// <remarks>This is surely just the mathematical view.
/// It's still possible that the object is shown from top if you choose "Front".
/// ! BUG ! distance isn't always correct
/// </remarks>
public void targetObject(IntPtr nif_obj, e_viewPosition pos)
{
if (nif_obj == IntPtr.Zero)
{
return;
}
float x1, y1, z1, x2, y2, z2;
x1 = y1 = z1 = x2 = y2 = z2 = 0; // just to keep compiler happy
bool res = NIF.NIFAPI.GetBoundingBox(nif_obj, ref x1, ref y1, ref z1, ref x2, ref y2, ref z2);
if (!res)
{
return;
}
Reset();
moveGlobal((x1 + x2) / 2.0f, (y1 + y2) / 2.0f, (z1 + z2) / 2.0f);
float distancemin = 50; // atleast near-clipping plane must be reached
float distanceX = (x2 - x1);
float distanceY = (y2 - y1);
float distanceZ = (z2 - z1);
distanceX = (distanceX / 2) / (float)System.Math.Tan(45 / 2 * 3.14 / 180);
distanceY = (distanceY / 2) / (float)System.Math.Tan(45 / 2 * 3.14 / 180);
distanceZ = (distanceZ / 2) / (float)System.Math.Tan(45 / 2 * 3.14 / 180);
distanceX = System.Math.Max(distancemin, distanceX);
distanceY = System.Math.Max(distancemin, distanceY);
distanceZ = System.Math.Max(distancemin, distanceZ);
switch (pos)
{
case e_viewPosition.Top:
moveLocal(0, 0, -System.Math.Max(distanceX, distanceY));
break;
case e_viewPosition.Front:
rotateLocal(-90.0f, 0.0f, 0.0f, 1.0f);
rotateLocal(-90.0f, 1.0f, 0.0f, 0.0f);
moveLocal(0, 0, -System.Math.Max(distanceY, distanceZ));
break;
case e_viewPosition.Below:
rotateLocal(180.0f, 1.0f, 0.0f, 0.0f);
moveLocal(0, 0, -System.Math.Max(distanceX, distanceY));
break;
case e_viewPosition.Back:
rotateLocal(90.0f, 0.0f, 0.0f, 1.0f);
rotateLocal(-90.0f, 1.0f, 0.0f, 0.0f);
moveLocal(0, 0, -System.Math.Max(distanceY, distanceZ));
break;
case e_viewPosition.Right:
rotateLocal(-90.0f, 1.0f, 0.0f, 0.0f);
moveLocal(0, 0, -System.Math.Max(distanceX, distanceY));
break;
case e_viewPosition.Left:
rotateLocal(90.0f, 1.0f, 0.0f, 0.0f);
rotateLocal(180.0f, 0.0f, 0.0f, 1.0f);
moveLocal(0, 0, -System.Math.Max(distanceX, distanceY));
break;
}
}
