public OpStatus StepBack()
{
if (iCurrent == 0)
{
return(OpStatus.Success); // weird but ok
}
IChangeOp op = vHistory[iCurrent - 1];
DebugUtil.Log(2, "ChangeHistory.StepBack: reverting {0}", op.Identifier());
OpStatus result = op.Revert();
if (result.code != OpStatus.no_error)
{
DebugUtil.Error("[ChangeHistory::StepBack] Revert() of ChangeOp {0} failed - result was code {1} message {2}",
op.Identifier(), result.code, result.message);
return(result);
}
iCurrent--;
return(OpStatus.Success);
}
/// <summary>
/// input objectF is in Object (local) coords of so, apply all intermediate
/// transforms to get it to Scene coords
/// </summary>
public static Vector3f ObjectToSceneP(SceneObject so, Vector3f objectPt)
{
SceneObject curSO = so;
while (curSO != null)
{
Frame3f curF = curSO.GetLocalFrame(CoordSpace.ObjectCoords);
Vector3f scale = curSO.GetLocalScale();
objectPt = curF.FromFrameP(objectPt * scale);
SOParent parent = curSO.Parent;
if (parent is FScene)
{
return(objectPt);
}
curSO = (parent as SceneObject);
}
if (curSO == null)
{
DebugUtil.Error("SceneTransforms.ObjectToSceneP: found null parent SO!");
}
return(objectPt);
}
public OpStatus StepForward()
{
if (iCurrent == vHistory.Count)
{
return(OpStatus.Success);
}
IChangeOp op = vHistory[iCurrent];
DebugUtil.Log(2, "ChangeHistory.StepForward: applying {0}", op.Identifier());
OpStatus result = op.Apply();
if (result.code != OpStatus.no_error)
{
DebugUtil.Error("[ChangeHistory::StepForward] Apply() of ChangeOp {0} failed - result was code {1} message {2}",
op.Identifier(), result.code, result.message);
return(result);
}
iCurrent++;
return(OpStatus.Success);
}
/// <summary>
/// input dimension is in Object (local) coords of so, apply all intermediate
/// transform scaling to get it to Scene coords
/// </summary>
public static float ObjectToScene(SceneObject so, float objectDim)
{
float sceneDim = objectDim;
SceneObject curSO = so;
while (curSO != null)
{
Vector3f scale = curSO.GetLocalScale();
Util.gDevAssert(IsUniformScale(scale));
sceneDim *= ((scale.x + scale.y + scale.z) / 3.0f); // yikes!
SOParent parent = curSO.Parent;
if (parent is FScene)
{
return(sceneDim);
}
curSO = (parent as SceneObject);
}
if (curSO == null)
{
DebugUtil.Error("SceneTransforms.ObjectToScene: found null parent SO!");
}
return(sceneDim);
}
/// <summary>
/// input objectF is in Object (local) coords of so, apply all intermediate
/// transforms to get it to Scene coords
/// </summary>
public static Frame3f ObjectToScene(TransformableSO so, Frame3f objectF)
{
Frame3f sceneF = objectF;
TransformableSO curSO = so;
while (curSO != null)
{
Frame3f curF = curSO.GetLocalFrame(CoordSpace.ObjectCoords);
Vector3f scale = curSO.GetLocalScale();
sceneF.Scale(scale);
sceneF = curF.FromFrame(sceneF);
SOParent parent = curSO.Parent;
if (parent is FScene)
{
return(sceneF);
}
curSO = (parent as TransformableSO);
}
if (curSO == null)
{
DebugUtil.Error("SceneTransforms.TransformTo: found null parent SO!");
}
return(sceneF);
}
/// <summary>
/// Input objectV is a vector in local coords of SO, apply all intermediate inverse
/// transforms to get it into scene coords.
/// </summary>
public static Vector3f ObjectToSceneV(SceneObject so, Vector3f objectV)
{
Vector3f sceneV = objectV;
SceneObject curSO = so;
while (curSO != null)
{
Frame3f curF = curSO.GetLocalFrame(CoordSpace.ObjectCoords);
Vector3f scale = curSO.GetLocalScale();
sceneV *= scale;
sceneV = curF.FromFrameV(ref sceneV);
SOParent parent = curSO.Parent;
if (parent is FScene)
{
return(sceneV);
}
curSO = (parent as SceneObject);
}
if (curSO == null)
{
DebugUtil.Error("SceneTransforms.ObjectToSceneV: found null parent SO!");
}
return(sceneV);
}