Camera - TargetExpressionTag - Cinema 7/8

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 22/07/2003 at 06:11, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   8.100
Platform:
Language(s) :   C.O.F.F.E.E ;

---------
i want to export the camera target...
with cinema 7 it works fine, with 8 i get a NIL object ?!
here the snippet:

   // CAM TARGET
   var objTag = pObject->GetFirstTag();
   while(objTag != NULL)
   {
    var objClass = getclass(objTag);
    if (objClass == TargetExpressionTag)
    {
     // TARGET NAME
     var targetContainer = objTag->GetContainer();
     var strTargetName = targetContainer->GetData(TARGETEXPRESSIONTAG_NAME);
     println("camtargetame: ", strTargetName);
     WriteChunk(CHUNK_CAMERA_TARGET_NAME);
     WriteZeroString(strTargetName);
      var tmpObject = g_pDoc->GetFirstObject();
      while(tmpObject != NULL)
      {
       var strTmpName = tmpObject->GetName();
       if ( 0 == strcmp(strTargetName, strTmpName) )
       {
        // TARGET POSITION
        var vecTargetPos = tmpObject->GetPosition();
        println("camtargetpos: ", vecTargetPos);
        WriteChunk(CHUNK_CAMERA_TARGET_POSITION);
        g_pFile->WriteReal(vecTargetPos.x);
        g_pFile->WriteReal(vecTargetPos.y);
        g_pFile->WriteReal(vecTargetPos.z);
       }
       tmpObject = tmpObject->GetNext();
      }
    }
    objTag = objTag->GetNext();
   }

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 23/07/2003 at 06:56, xxxxxxxx wrote:

Hi,
in R8 the target object is not a string anymore but a BaseLink. And baselinks are unfortunately not accessible anymore in R8 via COFFEE.
Either you switch to C++ or you will need to wait for an updated COFFEE SDK (or somebody writes a plugin that allows to pass the baselink to COFFEE - I even remember somebody actually is working on such a plugin).
There is no workaround for this afaik.
Best
Samir

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 24/07/2003 at 14:35, xxxxxxxx wrote:

how lame...
and how to get the "up" vector from the camera ?
rotations ?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 24/07/2003 at 15:40, xxxxxxxx wrote:

what do you mean by "up" vector? The rotations of the camera can be accessed just as any other object rotations with GetRotation or u use the local/global matrix of the object for the rotation values.
See the COFFEE docs for more information. (And maybe a good book about OOP
Best
Samir

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 24/07/2003 at 18:03, xxxxxxxx wrote:

i am coding an exporter for my d3d9 engine...
and there, the camera has an "eye" (cam-pos), "lookat" (cam-targetpos) and
"up" (?) vector... opengl also has those 3 vectors...
so my question is how to get that "up" vector out of cinema.
www.igoronimo.org/work.html
some screenshots...

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 25/07/2003 at 11:26, xxxxxxxx wrote:

Get the matrix of the camera object. It sounds like:

    
    
    var mat = cam->GetMg();  
    eye = mat->GetV0();  
    lookat = mat->GetV3(); // Z axis  
    up = mat->GetV2(); // Y axis

I assume that D3D doesn't store the X axis vector since it's always Y x Z.