tdw110 t poser
TRANSCRIPT
rying to create a Poser render using conforming clothing that does not fi t properly can bring workfl ow to a halt, interrupting the creative process. Much
time will be spent trying to get the clothing to fi t using morph targets, and you will often still encounter areas of the underlying fi gure that will still poke through.
As a result, getting conforming clothing to look right can take
hours, even days. Rather than spending so much time adjusting
settings, you want to be able to see the beauty of cloth as it
interacts and collides with your fi gure, draping, falling and moving
as though it were truly silk or leather.
For this, you need dynamic cloth simulation. This enables you
to dress, pose, and drape clothing onto a fi gure in minutes. Cloth
simulation has been a major part of Poser for the last four
versions, yet it’s relatively rarely seen in renders. This is a shame,
since simulation gives you more creative freedom, usually results
in a better-looking render – and is surprisingly simple to master.
In this tutorial, you will learn how to export a stock female
fi gure provided with Poser 7 or Poser Pro to use as a reference
mesh. You will then create a dress around her using box modelling
techniques. You can use any modelling software for this, but
we’re using 3ds Max 2009 because of its new Poser-friendly
OBJ import plug-in. If you don’t have 3ds Max, a ready-made
OBJ fi le is provided for you on the CD.
Next, you will bring the completed model back into Poser.
Using the dress as dynamic cloth around the same fi gure you
started with, you will be able to run a simulation. The result
will be a beautifully draped fi gure, posed and ready to render.
On the CD, you can fi nd the opening Poser scene fi le for
the tutorial; the complete Poser simulation scene fi le; the
fi nished dress model with UV template; a 3ds Max 2009
dress model fi le; and a Poser Runtime, containing two
original textures for the dress and material fi les for
loading. The disc also contains a QuickTime
screen-capture video setting out the process in more
detail, including additional techniques not shown in the
walkthrough printed in the magazine.
Thanks to CG Textures (www.cgtextures.com)
for providing the texture shown in the image on the left.
The alternative texture was created by the author.
Colm Jackson is a professional 3D content creator. Together with Syyd Raven, he created the hugely successful Poser online community Runtime DNAwww.runtimedna.com
T
FORPoser
DIFFICULTYElementary
TIME TAKEN1 hour
ON THE CD• Full-size screenshots• Scene fi les• Workfl ow video
ALSO REQUIRED3ds Max (optional)
FACTFILE
064 | 3D WORLD3D WORLD December 2008
POSERPOSER
Dressing upForget conforming clothes: discover how to use dynamic cloth simulation to create more realistic clothing for your Poser fi gure renders and animations BY COLM JACKSON
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December 2008 3D WORLD 3D WORLD | 065
Start up Poser 7 and open PoserStage1.pz3 on the CD. To export the Sydney fi gure to use as a mannequin in 3ds Max, simply select File > Export
> Wavefront OBJ. This will activate the Export Range dialog. Select Single frame and click OK.
01In the Export Options dialog, tick Weld body part seams; As Morph Target (no world transformations); and Include body part names in
polygon groups. This ensures that the Sydney fi gure mesh loads in the same position inside 3ds Max as it would in Poser. Click OK, then name and save your fi le.
03The Select objects dialog now opens. This is a hierarchical list of everything found in the scene. Our scene contains only the Sydney G2 fi gure and
the default GROUND plane object. The Poser UNIVERSE is already unticked. Untick GROUND and click OK.
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STAGE ONE | Exporting a fi gure mesh from Poser
Add a Symmetry modifi er by opening the Modify tab’s Modifi er List menu. (Click the small black triangle next to Modifi er List, then scroll down and
select Symmetry.) This adds the Symmetry modifi er just above Editable Poly in the Modifi er Stack. Make sure that X is selected for Mirror Axis and that Flip is ticked. The box is now mirrored.
07Click on Editable Poly in the Modifi er Stack. The second icon at the bottom of the stack window is the Show end result toggle. Click this to see the
effect of the stack while modelling. Select the top polygon on the box and activate the Extrude tool. Click and drag on the activated polygon to create fi ve extrusions. Refer to the workfl ow video on the CD if required.
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3ds Max 2009 contains a good set of plug-ins by guruware to aid in importing from Poser. To import your mesh into Max, click File > Import and select
the mesh. In the Files of type drop-down menu, select gw::OBJ-Importer. It’s essential to select the correct settings in the OBJ Import Options dialog: copy the settings from the screenshot above, then click Import.
04Now you can begin modelling. In the Create tab’s Object Type pane, select Box. In the Front view draw a box on the left side of the fi gure. Draw the
box around the hip area, with the right side of the box running down Sydney’s centre. In any viewport, right-click on the box you just created; from the menu that appears, select Convert To > Convert to Editable Poly.
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STAGE TWO | Modelling the dress in 3ds Max
So that you don’t encounter any symmetry problems later, select the Modify tab: under Selection, click the Vertex icon. With the Select
and Move tool in the top toolbar activated, individually click on each of the four vertices running down the centre of the mannequin and enter a value of 0 in the X numerical fi eld at the bottom.
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Activate Edge under Selection, and select one of the horizontal edges on the side of the box. Click the Ring button to select all the edges on that
side. Right-click and select Connect in the tools 2 menu. This will subdivide the polygons connected by the selected edges. Repeat this procedure for the horizontal edges on the front of the box.
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▲Dynamic cloth simulation | TUTORIALS
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EXPERT TIPDrapingThe Cloth Room’s Draping feature enables you to make clothing that was modelled for one fi gure fi t a completely different one. When modelling a garment, it is not necessary for it to fi t perfectly over the underlying fi gure. The Draping function will make it fi t as closely as you need. The Cloth Room can also be used to make movement morph targets for conforming clothing, and can even create full-body morph targets of the different body shapes that are possible with Poser fi gures.
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Delete polygons for the neck, arm and legs of the character to go through. With Vertex selection activated, select vertices and reposition them to
begin shaping your subdivided box into a dress. Use the [Ctrl] key to multiple-select components. Use Maximize Viewport Toggle and work in Perspective view. Use the Orbit and Zoom tools to check your model while working.
10Next, add a MeshSmooth modifi er to the top of the Modifi er Stack. Under Subdivision Amount, set Iterations to 3. With Vertex selection, you will be
able to see the subdivided result as you model and shape the dress. Model the dress to fi t as closely to the body as you can: refer to the video on the CD to see this process in more detail.
11With the modelling completed, you are ready to export your mesh to use in Poser. Click File > Export, and name your fi le. In the Save as type
drop-down, select gw::OBJ-Exporter. Make sure you copy the OBJ Export Options exactly as shown in the screenshot. It is critical for the exported mesh to load into Poser with the right size and placement.
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With the Sydney fi gure loaded in Poser, click File > Import > Wavefront OBJ. In the Import Options dialog, untick everything apart from Make polygon
normals consistent. Select the dress mesh that you exported from 3ds Max (or SydneyDress.obj on the CD). The dress will now be imported, and should appear directly on the Sydney model.
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STAGE THREE | Setting up the cloth simulation in Poser
The newly loaded dress model now needs to be parented to the Sydney fi gure. In the dress object’s fl oating window, change from Parameters
to the Properties tab. Click the Set Parent button to open the Object Parent window. Scroll down the window and choose SydneyG2. Click OK. The dress is now parented to the Sydney fi gure.
14Select Window > Animation Controls to reveal the Timeline at the bottom on the screen. Move the slider to frame 30. Make sure that the Sydney
fi gure is selected by clicking on the fi gure. Open the Poses Library on the right and click on the small black triangle to navigate through the drop-down menu to Pose > G2 > G2 Female > Walking > Walking and select Walk 03.
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STAGE TWO (Continued) | Modelling the dress in 3ds Max
The next step involves making the dress a cloth item. Click the Clothify button. In the dialog that appears, click the small black triangle next to
Object to clothify to open the drop-down menu. Navigate to Props > SydneyDress if it is not already selected.
17Click the Cloth tab at the top of the interface. Click the New Simulation button at the top left of the screen. In the Simulation Settings dialog, give the
simulation a name. Leave all other settings exactly as they are, except the Cloth Draping pane’s Drape frames option, which you should set to 10. Click OK.
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TUTORIALS | Dynamic cloth simulation
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Back in the Cloth Collision Objects dialog, you need to defi ne exactly how close the dress will collide with the Sydney fi gure. Set both Collision
Offset and Collision Depth to 0.100. This will create a snug fi t to the dress. Leave the Start draping from zero pose option ticked and click OK.
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Click the Calculate Simulation button. Poser will display a busy icon for a minute or two while it begins the calculations necessary to produce the
fi nal simulation. The activity meter will then appear. It will start by draping for 10 frames; then it will run the simulation for 30 frames.
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Now you are going to let Poser know what the dress is going to collide with. Click the Collide Against button. In the Cloth Collision Objects
dialog, click the Add/Remove button and choose SydneyG2 in the Select objects dialog. Before clicking OK, scroll down and untick Right Shoulder, Right Forearm, Left Shoulder and Left Forearm.
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EXPERT TIPDynamics ControlsDynamics Controls are a powerful feature in the Poser Cloth Room. They enable you to fi ne-tune how the cloth will react in the simulation. Although many settings are specifi c to the mesh that is being used, there are two more universal functions. Fold Resistance controls the cloth’s stiffness. The higher the setting, the less the cloth bends as it contacts an object. Cloth Density simulates how gravity affects certain types of material. For instance, silk almost fl oats to the ground, while leather drops quickly because of its weight.
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After the simulation is complete, all you need to do is produce a render of your work. Select Render > Render Settings. In the Render Settings dialog, choose Manual Settings. Here, you can set the quality of the render and whether to cast shadows, and select Raytracing or other interesting render features. Make sure that Cast shadows
is ticked. Tick Smooth polygons to make sure nothing in the render contains unsmoothed geometries. Set Pixel samples to 8 and Min shading rate to 0.20. Leave all other settings at their default values. These settings will generate a fairly high-quality render. Click the Render Now (Firefl y) button to render the fi nal image of your cloth simulation. ●
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STAGE THREE (Continued) | Setting up the cloth simulation in Poser
Next, you need to determine how your cloth will react in the simulation. Under Dynamics Controls, set Fold Resistance to 60.000. This will give the
dress a nice smooth look as opposed to the default setting, which gives a more creased, loose look. Cloth Density should be changed to 0.0010. This will simulate a softer and more delicate material.
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STAGE FOUR | Running the cloth simulation in Poser
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Dynamic cloth simulation | TUTORIALS
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