Mol's V4 Animation Toolkit

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V4 Hip and positioning V4 in Poser


 

Read through first and then SEE ONLINE VIDEO EXAMPLE - CLICK ME!

 

  
  



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Victoria's Hip
When animating, it is best to use my animation kit to construct a sequence with V4 on her default spot in the Poser Window. Once satisfied with the general animation, she can be moved to the desired position. However, this is not as easy as it sounds. The reason is that any Pose applied with Hip position values will also include x,y, z trans values. So if you move V4, she is immediately going to jump back to her original position on the second frame of your animation - driven there by the key frame 2 x,y,z hip values.So, this is the way to do it....

Here again is my Poser Desktop. I have applied the SIT DOWN pose and moved the timeline along to around the middle of the 30 frame sequence. V4 is half-way through sitting down. But, of course, it is desired that she sits down on the box just behind and to the left of her. The Graph Window shows the current Hips Trans X position for each of the key frames. Too get V4 to sit onto the box, we need to set new values for all the Hips X and Z trans values. Scroll down and look at the Z values first.



The Z values for the Hip are seen in the Graph Window in the Screen Shot below. Note the 10 frame flat line at the start and end of the sequence. This is due the fact that I applied the 'BUFFERED' Pose so V4 stands for a third of a second (10 frames) before sitting down, and then remains sat inert for another third of a second at the end of the sequence. The sloping line shows that the Hip Z position changes (moves back away from you the viewer) uniformly as she sits down. If we only moved V4 over to the box, only the first key frame would change! As soon as the animation reached the second frame, the hip would relocate to the X.Y,Z values of the second keyframes.

Clearly what is needed is to move all the values for X (left/right), and Z (back/forwards) without disturbing the relationships between the keyframe values for each of the 30 frames. We use the Graph Window to achieve this. Their are several ways of doing this but I will show you the quickest way.

When I applied the pose, I ensured Inverse Kinetics was switched on for both the left and right leg. As I now wish to move V4 via her Hip coordinates, I need to turn off the Inverse Kinetics. If I don't do this and attempt to move her hip, the feet will try to remain where they are.

The images on the right show how to turn off Inverse Kinetics.
Once this is done, you need to ensure the video sequence is positioned at frame 1, the first frame. You can use the video button
(see beneath) to effect this.


 


Good. Now we are ready to put V4 into position.
We will move her in the z position first and then the x position. In the screenshot below, I have rotated the main camera around and come away a little it so I can see where the box is relative to V4. I put my mouse cursor over the parts of V4, until the hips outline lights up and then I click and hold down the left mouse button. I make sure I really have grabbed her hip and not something else, like her hand or part of the outfit she is wearing, and then drag her over to place her close to the box. This way though upsets the Y values which is going to create more work for to put right afterwards, so lets not do that. Instead, once the hip is selected, use the Hips trans dial to move V4 backwards to the box!
 
The screenshot on the right shows the result of spinning the Z translate dial. V4 has moved back much closer to the box (well at least the fist frame of the sequence anyway, for now), and all the rest of the keyframe values have not been disturbed.
 
Also, because we used the dial to move her instead of dragging her with the mouse, I am assured that the Y tans values (up/down) for her hip have remained intact for the whole 80 frames too.
 
She may not be exactly where we want her to be in the Z axis yet but we can always re-adjust the Z translate value for keyframe 1 later, after we have moved her in the X axis.

So lets turn the camera around and spin the dial on the X translate value to move her left (as viewed from the front) so she is standing just in front of the box...
   
 Here is a screenshot taken after I moved V4 in the X axis....
 

So, now we have V4 positioned (but only for the first keyframe), we will adjust all the other key frames for both Z TRANS AND X TRANS in the Graph window.
 

We will do the X TRANS first!

Place the mouse cursor into the graph window just after and to the right of the first key frame. Hold down the left mouse button and sweep across the graph window to the right until you have move passed the last frame. All the keyframes, except the first one, should now be highlighted by a black filled box.
 
Position the cursor inside the black area below the horizontal time line and hold down the CONTROL KEY AND LEFT MOUSE BUTTON TOGETHER. The cursor changes to two vertical arrows, one pointing up, and the other pointing down. Move the mouse up or down to align all the keyframes (after the first one) with the very first key frame.

The Screenshot on the right show the position, just before I move the keyframes as a block to their new position for the Hips X Trans.

When you move the block of keyframes, they might look aligned to the eye but you need to check each keyframe value and adjust again if they are wrong.... {scroll down}

   

You can place the cursor on each key frame in the Graph Window and check the value next to the translate dial.

For the X Translate Value in this pose, all the values will be the same as the first keyframe because the Sit Down animated Pose does not move V4 or her hips from side to side.

Things are not the same when we come to do the Z Translate Keyframes shift though, because V4, or her hips, do indeed move back through the Z axis as she sits down.

The Screenshot on the right ends the move of the X Translate value. When doing the Z value (see below), you will need to exercise a bit of trial and error to adjust the keyframes after the first one (as a block) to ensure the sit pose is natural and V4 is not suddenly lurching back.

The screenshot below shows the new positions of the Z keyframes after they were moved (Frames 2 to 80) using the highlight and CTRL Left Mouse Press move routine.
 

SEE ONLINE VIDEO EXAMPLE - CLICK ME!

 




Don't forget to turn back on the Inverse IK for both legs if you are going to add more pose sections to the sequence!

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Copyright: Mol Smith 2008 UK
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