Advanced Animations: Difference between revisions

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(New page: =Introduction= This tutorial deals with advanced topics in animations. ==The Animation View== *Open a data set. This example uses the training data disk_out_ref.exo, which can be downlo...)
 
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==The Animation View==
==The Animation View==


*Open a data set.  This example uses the training data disk_out_ref.exo, which can be downloaded at http://www.paraview.org  
*Open the data set can.exo, which can be downloaded at http://www.paraview.org/paraview/resources/software.html
*On the Properties tab, select all variables and press the Apply button.
*On the Properties tab, select all variables and press the Apply button.
*Drag the cylinder around with the left mouse button.
*Drag the can around with the left mouse button.
*On the Display tab, select Color by V
*Color by DISPL
*From the menu, select View, then Animation View.  This will display the animation window on the GUI display.  On the picture below, the animation view is highlighted in blue.
*View/ Animation View.   


[[Image:advanced_animations_new_1.png|800px]]


[[Image:advanced_animations_1.png|800px]]
* Grab the slider bar and move it back and forth.




==Camera Animation==
==Temporal Interpolator==


*Open your data set and select the Animation View as described above.
*In the Animation View window, change the mode to Sequence, and the No. Frames to 200. 
*In the Animation View window, select the Camera option in the pull down menu and click the Plus icon next to it.  This will add a time chart to the view which will allow you to manipulate the camera settings.
*Filters/ Temporal/ Temporal Interpolator.
*Play.  Notice that the can motion is now smooth.  ParaView is interpolating between frames, and making 200 time steps. 
**Note that this only works with data that stays consistent through the whole time sequence.  AMR (Adaptive Mesh Refinement) data does not work with the Temporal Interpolator.




[[Image:advanced_animations_2.png|800px]]
==Move the camera==


*Double click on the time chart.  This will open an editing window for the camera.  There should be two entries in the table.  These indicate the starting and finishing times and positions of the camera.
*Delete the Temporal Interpolator.
*Go to the First Frame.
*In the Animation View, to the right of the blue plus sign is a pull down menu.  Change to Camera.  Next to that is a pull down menu that says Orbit.  Change this to Interpolate Camera Location.  Click on the blue plus sign.
*Double click on the white horizontal bar that you just created.  The Animation Keyframes dialog box should appear.
*Position the can at whatever position you want to start at. 
*In the Animation Keyframes dialog box, double click on the word "Position..." for the first time step.  Select "Use Current".  OK.
*Go to the Last Frame.
*Position the can at whatever position you want to end at.  Use the <SHFT> right mouse button to drag the can back to the middle of the screen.
*In the Animation Keyframes dialog box, double click on the word "Position..." for the last time step.  Select "Use Current".  OK.
*OK.
*Now, hit the play button.  Notice that the can stays in the middle of the screen.




[[Image:advanced_animations_3.png]]
[[Image:advanced_animations_new_2.png|800px]]
[[Image:advanced_animations_new_3.png|800px]]


*Click on the New button.  This will add a keyframe between the start and the finish.
*You can also create an intermediate destination for the can by going to the Animation Keyframes dialog, and selecting New.  Then, follow the directions above.
 
*Experiment by adding more keyframes and different camera angles.
[[Image:advanced_animations_4.png]]


==Orbit with the camera==
*In the Animation View, delete the Camera.  (You will use the red X.)
*Add a camera, but change Interpolate camera locations to be Orbit in the pull down dialog box next to Camera.  OK.
*Play
*Double click on the white horizontal bar next to "Camera". Double click on Path...  If you click on Camera Position, you can see where the camera is, as well as the Camera focus and the Up Direction.  Probably for advanced users that want to use beta level features. OK, OK.
*Play.


*You may change the time value of this keyframe by double clicking on the time entry and manually changing the time.  This can be done for any of the keyframes. 
*Advanced option - Create a "Follow Path" camera.  This is the same as a circle above, but is an open loop.
*Let us change the camera value of the second entry.  Keeping this window open, go back to the data set and move the disk to a desired position.
*Next, return to the Editing Camera table and double click on the second entry under the Camera Values column. 
 
 
[[Image:advanced_animations_5.png]]
 
 
*Click on the Use Current button.  This will set the camera values to the position that you manually moved the disk to.  Alternatively, you may specify the values by populating the various fields.  Press OK.  Press OK again to close the Animation Keyframes window.
*Next, back at the Animation View, specify the Mode.  If your dataset already has time steps built into the model you may want to select Snap to TimeSteps.  If it does not you will have to select either Sequence, or Real Time.  If you select Real Time you may want to modify the Duration setting.  Similarly, if you selected the Sequence mode you will want to modify the No. Frames setting. 
 
 
[[Image:advanced_animations_6.png|800px]]
 
 
*Play the animation.
*Experiment by adding more keyframes and different camera angles.
 
   
   
==Temporal Interpolator==
*Open can.exo. 
*Filters → Temporal → Temporal Interpolator.  Apply.
*On the Animation View, change Mode to Real Time.
*Change the Duration to 100.
*Click the Play button.
[[Image:advanced_animations_7.png|800px]]
 
   
   
==Data Animation==
==Data Animation==


In the previous example we showed how to manipulate the camera using the Animation View tools, in this example we will show how to animate your data set.
In the previous example we showed how to manipulate the camera using the Animation View tools, in this example we will show how to animate your data set.  Our goal is to show one data set, then fade into another dataset.  This can be handy when one physics simulation runs for an early time period, and another physics simulation runs for the later time period.


*Open your data set and select the Animation View as described above.
*In our example we are using the data set disk_out_ref.exo.
**This data set does not contain any time steps so it cannot be immediately animated. 
**There are many ways to animate your data set.  One simple way is to apply a Warp Vector.
*From the Filters menu option select Common → Warp Vector.
*On the Properties tab, select a Scale Factor of 0.5.  Press Apply.


*Lets start from scratch.  One way is to go File/ Disconnect.  Ok. 
*If you closed it, bring up the Animation View.
*Open can.exo, all variables on, Apply.
*Open can.exo again, all variables on, Apply.
*Select the upper can.exo, and change to color by DISPL.  Last time step, Rescale to Data Range, first time step.
*Select the lower can.exo, and chage the representation to Wireframe.


[[Image:advanced_animations_8.png|800px]]
We now want to fade from the first version of the can to the second version of the can.  This is done as follows:
 
*On the Animation View, on the can.ex2 pulldown menu, select the upper can.ex2.  Right of there, use the pulldown menu to select Opacity.  Click the blue plus sign.
*Do the same for the lower can.ex2.
*Click on the upper can.ex2 white horizontal bar.  Double click on the upper value, change it to 1.  Double click the lower value, change it to 0.  OK.
*Play.


*In the Animation View window, select the WarpVector option in the pull down menu along with Scale Factor in the pull down menu to the right of it and click the  icon.  This will add a time chart to the view which will allow you to manipulate the data set.
You can substitute Visibility for Opacity when you add tracks to the Animation View.  Then, on one dataset, you can run visibility of 1 for half of your time, and run visibility of 1 for the other dataset for the second half of your time.  Thus, you will show the first simulation for the first half of your animation, and the second simulation for the second half.
*Double click on the new created time chart.  It should be labeled WarpVector1 – Scale Factor.  This should open the Animation Keyframes window containing two keyframe entries indicating the first and last keyframes.
*Press the New button to create another keyframe.  By default ParaView adds the new keyframe with a time value in the middle of the two previous keyframes.  You may modify that value to whatever you wish.  The Value column is the Scale Factor of the Warp Vector filter that we are animating on.  Try changing that value to 1.  Change the interpolation to Sinusoid.  Experiment changing the interpolation values and see what effects it has on the data set.  Press OK.  Press OK.


**Linearly (Ramp) interpolate from one key frame value to the next.
**When using Exponential interpolation, the key frame value will be interpolated from this key frame to the next one according to the specified exponential function. The Base, Start Power, and End Power must be specified; user interface controls for this appear when Exponential interpolation is chosen. The interpolation of the exponents is linear, so the interpolation from Base ^ Start Power to Base ^ End Power is exponential.
**The Sinusoidal interpolation type varies the value from this key frame to the next one according to the specified sine function. The Phase, Frequency, and Offset must be specified from the user interface controls that appear when Sinusoidal interpolation is selected.
**For Step interpolation, use the key frame value from the time this key frame takes effect until the time for the next key frame is reached. At that point, immediately use the next key frame value.


*Back at the Animation View window you will need to change the Mode to either Sequence or Real Time if you data set does not contain time steps.  You also may want to change the No. Frames or Duration depending on the mode you selected. 
==Warp Vector==
*Play the animation.
*You may also combine multiple animations.  Try adding a camera animation to make the camera pan around the data set as the warp vector animation is running.


* If your dataset has displacement data, but it is not using a variable name that ParaView recognizes, you can still animate your data.  Choose the Filters/ Alphabetical/ Warp Vector filter.


==Saving Animations==
Once an animation has been created in ParaView, the animation may be saved as an AVI file or as a series of image files (JPEG, TIFF, or PNG), one image per animation frame. This functionality is available by choosing Save Animation from the File menu. When a movie file or series of images is saved, all of the views in the ParaView application window are captured. Additionally, the geometry per animation frame may be saved by selecting Save Geometry from the File menu. The data will be written out using ParaView's PVD file format.




=Acknowledgements=
=Acknowledgements=
Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

Revision as of 01:49, 25 August 2009

Introduction

This tutorial deals with advanced topics in animations.

The Animation View

Advanced animations new 1.png

  • Grab the slider bar and move it back and forth.


Temporal Interpolator

  • In the Animation View window, change the mode to Sequence, and the No. Frames to 200.
  • Filters/ Temporal/ Temporal Interpolator.
  • Play. Notice that the can motion is now smooth. ParaView is interpolating between frames, and making 200 time steps.
    • Note that this only works with data that stays consistent through the whole time sequence. AMR (Adaptive Mesh Refinement) data does not work with the Temporal Interpolator.


Move the camera

  • Delete the Temporal Interpolator.
  • Go to the First Frame.
  • In the Animation View, to the right of the blue plus sign is a pull down menu. Change to Camera. Next to that is a pull down menu that says Orbit. Change this to Interpolate Camera Location. Click on the blue plus sign.
  • Double click on the white horizontal bar that you just created. The Animation Keyframes dialog box should appear.
  • Position the can at whatever position you want to start at.
  • In the Animation Keyframes dialog box, double click on the word "Position..." for the first time step. Select "Use Current". OK.
  • Go to the Last Frame.
  • Position the can at whatever position you want to end at. Use the <SHFT> right mouse button to drag the can back to the middle of the screen.
  • In the Animation Keyframes dialog box, double click on the word "Position..." for the last time step. Select "Use Current". OK.
  • OK.
  • Now, hit the play button. Notice that the can stays in the middle of the screen.


Advanced animations new 2.png Advanced animations new 3.png

  • You can also create an intermediate destination for the can by going to the Animation Keyframes dialog, and selecting New. Then, follow the directions above.
  • Experiment by adding more keyframes and different camera angles.

Orbit with the camera

  • In the Animation View, delete the Camera. (You will use the red X.)
  • Add a camera, but change Interpolate camera locations to be Orbit in the pull down dialog box next to Camera. OK.
  • Play
  • Double click on the white horizontal bar next to "Camera". Double click on Path... If you click on Camera Position, you can see where the camera is, as well as the Camera focus and the Up Direction. Probably for advanced users that want to use beta level features. OK, OK.
  • Play.
  • Advanced option - Create a "Follow Path" camera. This is the same as a circle above, but is an open loop.


Data Animation

In the previous example we showed how to manipulate the camera using the Animation View tools, in this example we will show how to animate your data set. Our goal is to show one data set, then fade into another dataset. This can be handy when one physics simulation runs for an early time period, and another physics simulation runs for the later time period.


  • Lets start from scratch. One way is to go File/ Disconnect. Ok.
  • If you closed it, bring up the Animation View.
  • Open can.exo, all variables on, Apply.
  • Open can.exo again, all variables on, Apply.
  • Select the upper can.exo, and change to color by DISPL. Last time step, Rescale to Data Range, first time step.
  • Select the lower can.exo, and chage the representation to Wireframe.

We now want to fade from the first version of the can to the second version of the can. This is done as follows:

  • On the Animation View, on the can.ex2 pulldown menu, select the upper can.ex2. Right of there, use the pulldown menu to select Opacity. Click the blue plus sign.
  • Do the same for the lower can.ex2.
  • Click on the upper can.ex2 white horizontal bar. Double click on the upper value, change it to 1. Double click the lower value, change it to 0. OK.
  • Play.

You can substitute Visibility for Opacity when you add tracks to the Animation View. Then, on one dataset, you can run visibility of 1 for half of your time, and run visibility of 1 for the other dataset for the second half of your time. Thus, you will show the first simulation for the first half of your animation, and the second simulation for the second half.


Warp Vector

  • If your dataset has displacement data, but it is not using a variable name that ParaView recognizes, you can still animate your data. Choose the Filters/ Alphabetical/ Warp Vector filter.


Acknowledgements

Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

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