About animation

Animation in scene

Whereas animation is read only from few formats (ie. 3ds), you can add or retrieve keyframe from the SDK. Particularly C3DSceneNode derive from C3DAnimatable class, which means you can animate the matrix transformation for example.

Here is some code that allows to retrieve the different keyframe of a node.

int i, size;
size = node->GetKeyNbr();
for (i = 0; i < size; i++)
{
    int time;
    const C3DKeyframe* key = node->GetKeyByIndex(i, &time);
    switch (key->GetClassID())
    {
        case C3DKeyframe::KEYFRAME_MATRIX:
        {
            C4x4Matrix matrix = ((C3DMatrixKey&)*key).ToMatrix();
            break;
        }
 
        case C3DKeyframe::KEYFRAME_SCALE:
        {
            C3DVector vector = ((C3DScaleKey&)*key).GetVector();
            break;
        }
 
        case C3DKeyframe::KEYFRAME_ROT:
        {
            float angle;
            C3DVector vector = ((C3DRotateKey&)*key).GetRotation(angle);
            break;
        }
 
        case C3DKeyframe::KEYFRAME_TRANS:
        {
            C3DVector vector = ((C3DTranslateKey&)*key).GetVector();
            break;
        }
 
        case C3DKeyframe::KEYFRAME_PIVOT:
        {
 
            C3DVector vector = ((C3DPivotKey&)*key).GetVector();
            break;
        }
    }
}

You can also retrieve the whole scene time range, using C3DScene::GetTimeRange method and set/retrieve scene time using C3DScene::SetCurrentTime and C3DScene::GetCurrentTime