Proportional editing like a magnet to smoothly deform the UV part by modifying vertices within a given range.
To activate use the tool:
- Activate UV mapping tools
- Select the Image
- Select the TC surface On the selected TC surface should be already have unwrapped segments.
- Enter the edit Edit 2D Parts mode
- Select a single 2D Part
- Choose in In the local menu «Start choose Start Proportional Editing»Editing.
Figure 1. Entering the Proportional Editing
The user must specify
Specify the radius of editing area and lock the starting position of editing area.
The radius of editing area is defined in the UVmap coordinate system.
The radius of editing area can be changed in three ways:
A. Pressing the "+" and "-" buttons.
B. Choosing
...
the local menu items
B. Manually specify the exact radius in the Edit
...
bar
To lock the starting position of the editing area user should choose the position by moving the mouse and then clicking click the left mouse button or the "Enter"press ENTER.
After fixing the editing area a user changes the points of 2D part by moving dragging the mouse. Further images are visually showing the use of different equations of transformation
Figure 3. Constant transformation
Figure 4. Linear transformation
Figure 5. Quadratic transformation
Figure 6. Cubic transformation
Figure 6. "Sharp" transformation
For this tool it needs to paint 4 new icons (16x15 px)
| description |
1 | Start Proportional Editing |
2 | Finish Proportional Editing |
3 | Increase area radius |
4 | Decrease area radius |
Requires final approval of the name of this tool:
Now it's name is «Proportional Editing». This name corresponds to the name of a similar tool in Blender.
Все преобразования сегментов записываются в Undo, однако откатить операцию (Undo or Redo) возможно только после выхода из драггера UVMapping.
The manner in which points are moved is defined in the UV Properties in the Transformation Equation.
Constant transformation = No Falloff, all point move a once.
Linear transformation = Linear falloff
Quadratic transformation = Smooth falloff
Cubic transformation = Exponential falloff
Sharp transformation = Steep falloff
All the segments transformations are recorded in the Undo buffer, but roll back operations ( Undo or Redo ) is operations are possible only after leaving UVMapping dragger.
Figure 7. The settings dialog
The Editing area in UV coordinate system is a circle, but if the image is not square, then the editing area to the user will look as elliptical.
Figure 8. The editing area with non square image
Changing the UV coordinates by this tool is possible in both modes (GDI and RedSDK), but changes UV coordinates of original body in real time works only in RedSDK mode.