3D:Properties - V10
From OptiTexHelpEn
The 3D Properties Pane contains three key specification groups which affect the garment graded size to be simulated, the location of pieces in relation to the model and in relation to themselves (layers) and the physical attributes of the cloth or in other words, the behavior of the cloth.
- Note: the 3D Properties pane is dynamic, meaning that once you selected a stitch it would present the Stitch Properties.
Contents |
Icon & Location
Window
3D Positioning
Three dimensional positioning is all about placing the pieces in the virtual space.
Location
First we determine the pieces location in relation to the model.
To determine location click on the arrow at the Location field. This will invoke a drop down list of locations. Some of the options given here refer directly to human like model and others generally refer to three dimensional object, whether it's a couch skeleton or a horse.
Different locations have different default shape attributes (Flat/ Folded/ Cylinder). The shape attributes can later be modified.
- Front
- Place the piece flat infront of the model.
- Back
- Place flat at the model's back.
- Left/ Right
- Place flat at the sides accordingly.
- Top
- Place flat approximately above the model's shoulders.
- Bottom
- Place flat approximately at the knee's height.
- Left/ Right Arm
- Place as a 100% cylinder shape near the relevant arm. See Quick Start for a better understanding of sleeves placement.
- Left/ Right Arm Low
- Place as a 50% cylinder shape at the inner side of the arm.
- Collar Base
- Locate a piece as 100% cylinder shape and place it approximately around the model's neck.
- Collar
- Locate as a standard collar with 80% cylinder shape and place it approximately around the model's neck.
Flat/ Folded/ Cylinder
Those three radio buttons commands combined with 'Percentage' text field and 'Flip' radio button enable us to shape the pattern pieces as close to their post simualted shape as they can get. This is to ensure the simulation run as smoothly and quickly as possible.
- Flat
- Display piece in the 3D window in a spread out manner, just like it looks on the working area.
- Cylinder
- Bend the piece according to percentage given by the user and according to the Flip definition.
To change Percentage value click inside the text field and type the desired value.
Use Flip to modify bending and folding direction.
- Folded
- Create a 90 degrees folds in both ends of the piece.
The folding surfaces size is up to the Percentage value.
The folding direction can be modified with the Flip command.
Symmetric Orientation
Use Symmetric Orientation only in cases where there's a piece which is defined as a pair or as a half piece and one piece or half overlaps the other. A good example for this situation is a buttoned shirt, where the front is composed of two identical pattern pieces (defined as one Pair in the Piece Properties) which needs to be fasten with buttons down the center front.
The default attribute is 'Aligned'. Change to 'Below' or 'Above' according to the orientation of the piece as it appears on the working area. In other words, if the orientation of the piece shown on the working area is left, and you know that the left side of the front should be below the right side of the front, then define the front piece as 'Below'.
Ignore Piece
Use this checkbox to determine which pieces should be disregarded from 3D window actions (Place Cloth, Run Simulation etc.).
Symmetric Copy
There are cases in which the entire garment is symmetrical with the exception of one piece. For instance, a jacket with back jacket slit. Symmetrical Copy deals with these cases where you don't want to open the symmetry and stitch both sides.
Layers
Layer definition for each piece enable us to simulate multi layered product. Collars, pockets, belts, laces or any other add-on have to be superior in level (number) of layer.
Example:
- We added a pocket to the front piece of the T-shirt.
- The Front piece is defined as first Layer (1).
- Since the pocket is stitched on top of the front piece, we will define it as the second Layer (2).
- When there is no proper layers definition the piece that's supposed to be on top would penetrate the piece beneath. See images bellow to distinguish between simulation results.
Synchronize
Synchronizes the piece's location in relation to the body, according to the location set at the Location field and according to its 2D orientation.
Use the synchronize button when:
- A piece has been rotated or flipped on the Working Area.
- You wish to reset piece's location according to initial location after modifying its location manually on the 3D window.
Cloth Parameters
Cloth parameters section contains information about fabric behavior - values of fabric characteristics that define the material. Each fabric can be described by those physical attributes.
Special laboratories run tests on fabrics and produce results which can later be translated to OptiTex parameters using OptiTex Fabric Editor.
OptiTex has a ready-made list of different fabrics that you can load. See Fabric List. You can also manually change the cloth properties text fields before, during and after simulation time.
Bend
The resistance of the cloth to Bending forces. This important parameter affect the rigidity versus fluidity of the fabric.
- The higher the bending value - the stiffer the fabric.
- Low bending value - fluid fabric.
See Bend influence on the table cloth in the pictures bellow:
Stretch
The resistance of the cloth to Stretching forces in the Warp (X) and Woof (Y) directions. The parameters affect the elasticity of the fabric.
- High value means high resistance to strech force and thus - less elasticity.
- Low value means low resistance to strech force and thus- increased elasticity.
See Stretch influence on the bathing suit in the pictures bellow:
Shear
The resistance of the cloth to Shearing forces. Shearing forces influence is on the diagonal direction of the fiber/cloth or in other words, the parameter affect the gliding quality versus stiffness of a fabric that's cut on the bias.
- High value means high resistance to shearing force and thus - less softness.
- Low value means low resistance to shearing forces and thus - more softness and more accentuated body features.
See Shear influence on the half-circle skirt in the pictures bellow:
Shrinkage
Some fabrics may shrink in the Warp and/or Woof directions as a result of chemical reactions occuring during washing, drying, ironing etc. Use the Shrinkage factor to scale the garment (or part of it) to match its true size after shrinkage.
- Note - The X and Y directions refer to directions on screen and not to the warp and woof of the fabric.
On the following example, the pattern was enlarged in 5% both on the X and Y directions using the Scale command due to expected future shrinkage. The simulation results presented bellow show the same pattern for fabric with no 3D Shrinkage definition and for fabric with 5% Shrinkage definition.
Weight
The weight of the fabric in grams for square meter.
See example bellow for lighter fabric versus heavy weight fabric.
Thickness
The thickness of the fabric in cm.
See example bellow for thin fabric versus thick one.
Friction
The resistance of the cloth to its motion on the body's surface. Friction parameter affect the way the cloth slides on the body.
- High value means high resistance to motion on the body and therefor - the fabric will slide less on the body.
- Low value means low resistance to motion on the body and therefor - the fabric will slide more on the body.
See example bellow for Blouson dress where the fabric blouses over a fitted waistband. In images number 42 and 44 the waistband holds low friction value and in images number 43 and 45 the waistband holds high value of friction.
Resolution
- Each piece of cloth is represented in the 3D viewer by a mesh made of triangles.
- The Resolution definition determines the size of the triangle's edges which are measured in cm.
- The Resolution is increased as its value grow smaller; Resolution value of 0.8 is higher than 1.5.
- Low resolution means bigger triangles to represent the piece and thus less accuracy in representing complex curved lines.
- High resolution means smaller triangles to represent the piece and thus more accuracy in representing complex curved lines, folds and wrinkles.
- Resolution value affect the overall look of the garment - as the resolution grow higher the cloth seems more fluid and vice versa, as the resolution value is reduced the cloth seems more rigid.
- In most cases low resolution of 1.5 is enough to produce high quality simulation results.
- Notice: Using high resolution cloth panels severely effects simulation performance (speed), so use this control wisely. Small pieces or pieces that should reveal folded details should have a low resolution value whereas large, generally flat pieces need not be simulated with thousands of triangles (in other words- high resolution values).
- Notice - When simulating large pieces, set resolution to be lower (value of 2-10).
Defaults
Use this button to set the default values for all the cloth parameters above for selected pieces.
Fabric List
- A drop down list of fabrics. Each fabric holds its own set of cloth parameters values.
- To edit the Fabric List, assign textures to fabric types and add new fabrics to the list see OptiTex Fabric Editor.
Size For 3D
- Select the size you wish to simulate from the drop down list.
- The sizes in the list match the sizes defined in the Table Of Sizes.
- The Size Label is shown on the lower right corner of the 3D Model window.
