simulation 30 guide

7/29/2019 Simulation 30 Guide

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Simulation 30 guidelines

Table of contentsSIMULATION 30HIGHLIGHTS .....................................................................................................2

BASIC GARMENT CREATION GUIDELINES .................................................................2

GRID ...........................................................................................................................................2CLUSTERS ...................................................................................................................................23D WINDOW ................................................................................................................................2

IMPROVED FABRIC TESTING...........................................................................................3

IMPROVED FABRIC TESTING PROCEDURES..................................................................................3OPENING HELP............................................................................................................................3

SIMULATION 30 AUTOMATIC COLLISION MECHANISM ........................................4

COLLARS ANGLES ...............................................................................................................5

UPDATING EXISTING GARMENTS TO SIMULATION 30 ...........................................5

UPDATING TO SIMULATION 30 OR UP .........................................................................................6

NEW FABRIC PROPERTIES AND THE REFERENCE MANAGEMENT....................7


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Simulation 30 Highlights

Higher realism More detailed and accurate prediction of garments Better draping & Simulation in poses. Goes all the way. For example, a skirt that is too big (or not zipped) will fall

all the way to the floor (fast) during the standard simulation time.

Much improved collision. One collision type only. Better and more robust fabric testing parameters.

Basic garment creation guidelines

Grid

Default grid is now 1.5. In many cases, smaller grid may be used. Simulation 30 can

handle smaller grids as far as 0.2.

Clusters

Initial placement matters. Choose the best possible pre simulation position.

As a rule, move clusters closer to the body. If needed, uncheck the Constrained Area

check box to move clusters even closer.Its OK if shapes or stitches go inside the avatar body whenever appropriate.

Check the help for Cluster dialog box to learn about all cluster placement options.

3D window

In certain cases simulation 30 may be slower than before. Especially when using very

small grid on large garments.

The simulation may be stopped and resumed at any time.

This may be done in the following situations:

When the simulation goes on but no significant change is taking place. To check specific issues at any stage of the simulation.

Stopping the simulation

K to stop and finalize the simulation at any stage1. During any stage of the simulation, click inside the 3D window and than press

and hold the K button on the keyboard.

2. Keep it pressed until the hourglass appears. The progress bar disappears and thesimulation stops and finalizes.

Resuming the simulation

The simulation may be resumed and completed or stopped again.


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Control + K to resume a simulation previously stopped1. Click inside the 3D window and than press Control + K on the keyboard. The

garment changes back to simulation grid.

2. Now press the Simulate button. The progress bar appearsat the same stage it was stopped and the simulation continues.

Pausing the simulation

The simulation may be paused at any stage.

Z to pause the simulation at any stage During any stage of the simulation, click inside the 3D window and than press

the Z button on the keyboard. The simulation pauses.

Improved fabric testing

Improved fabric testing procedures

From simulation 30 onward the fabric parameters have been changed to standard

physical units. This enables the use of standard data from industry sources. The

testing methods have also been improved, especially the Stretch test which has been

united with the Shear and with a new feature: Elastic bands testingNote: Check the relevant help topic Fabric Physical Properties and testing

methodsfor details.

Opening Help

Help Center to open the online help

On the menu bar clickHelp > Help Center the VStitcher Online Helpdialog box opens.


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Simulation 30 automatic collision mechanismA new and significantly better collision system has been added with Simulation 30.

The new collision system is also much easier & user friendly.

Automatic collision

Simulation 30 has an automatic collision mechanism. All shapes come with default

collision assigned with a layer number of 0. This includes self collision which deals

with folds of the same shape as well as collision between layers.

When necessary, the layer number may be updated by the user.

Simplified options

The large variety of collision options has now been reduced to only two simple ones:

1. Default for most shapes.2. Left over right (or right over left) for self overlapped shapes such as

collar base, or cuffs).


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Example: simulation 30 blouse collision settings

Lower front: Defealt # 0

Top front: Defealt # 1

Collar base : Right over Left # 0 (or the same as the lower

front)

Collar: Defealt # 1 (or the same as the top front)

Note: for older simulation versions, the old simulation & options prevail

Collars anglesDifferent collar fold angles should be applied based on the type collar used.

Please refer to the help and look for: Setting fold properties

Updating existing garments to simulation 30Old garments may be updated to simulation 30 if required.

Updating to simulation 30 is irreversible and cannot be undone. This is mainly

because the fabric physical properties are updated automatically. Therefore it is

recommended to save a new version of the garment for the update. This can be done

during the update process itself.

Note: The fabric physical properties automatic update is only an estimate. It is

most recommended to apply newly tested fabrics or use new generic fabrics fromthe database.

Since the dramatic change in simulation 30, the update process needs some action

from the user, mainly grid settings, collision, and cluster positioning.

Grid: Old grid values higher than 1.5 should be manually changed. Collision: The new system will be reset all collision to the default. In many

cases the new automatic collision will take care of all collision issues, but

whenever needed, collision layer numbers should be assigned.

Clusters: Cluster placement should also be adapted to the new simulation,mainly to get them closer to the body. Apply also the new cluster functions

that have not existed before, like cluster symmetry and centralization.


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Note: Regardless of simulation 30, with old garments, some attention should also be

diverted to the following issues (depending how old the garment is)

1. Old shapes symmetry: if necessary, re-symmetrize.2. Old fold lines: recreate old fold lines if necessary

Updating to simulation 30 or up

Simulation Props to update to simulation 301. On the menu bar select View > Simulation Props. The Simulation

Properties dialog box opens.

2. Click update. A confirmation massage appears:

3. Click yes to continue. The save as recommendation message appears:

4. ClickYes or No.a. Ifyes, the save as dialog box opens. Proceed to save as a new

garment.

b. IfNo, the current garment is irreversibly updated.


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New fabric properties and the reference management

New bank of generic fabrics

Vstitcher Version 4.0 comes with a basic bank of generic fabrics that were tested

using the new procedure. Use these fabrics, unless testing actual new fabrics.

Recommended: test all fabrics using the new method

It is highly recommended for users to test all their own fabrics using the new methods

and to update the reference management with this info.

Old fabric properties compatibility

The old fabrics remain as they were, for backward compatibility. All old fabrics

compositions remain as read only and cannot be edited. If needed an old fabric

composition may be copied to be edited, in which case it will be reset to zero.

Using old fabrics from the database (not recommended)

When insisting on using old fabrics from the reference management, the fabrics will

be automatically upgraded using an estimated calculation. This is not recommended.

Its best to use new tested fabrics.

simulation 30 guide

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