The margin
opaque pixel boundaries (part of the picture), and specify the average margin (margin) between the polygon surrounding it.
※ 1
Such as part of the minimum margin
angle of the boundary, in the case of opaque pixel and polygon approaches, it adds a point so as to ensure a margin of as much as possible specified here. ※ 1
Spacing of points (pixels)
Specify the interval to hit the polygon. If 50 is specified, you will be hitting the one point in the range of approximately 50x50 pixels. ※ 1
Interval adjustment by the size ratio
Please enlarge If you want to increase the point as the area becomes smaller.
Relative to the size (area) is the largest area, specify whether the area is increasing the extent to which the interval for the region of 1/10. In the case of 1, it will be the same distance regardless of the size.
The minimum number of boundary
It specifies the minimum number of points that surround one of the region. In the case of 3 triangle consisting of three points it will be the shape of the case of the minimum. In the case of 4, quadrangle consisting of four points will be the shape of the case of the minimum.
Transparent and considered alpha value of the alpha value
original regarded as transparent (0..255 transparency of, 0 is transparent) to specify. Increase the value if you want to erase and almost transparent garbage. Usually, you do not have a problem with 0.
Update the polygon (Ctrl + R)
When you click the button to re-calculate the polygon. If you run into when you make modifications to the texture in the dust removal tool may polygon is beautiful.