opArt

opArt effects.

Op Art is a filter to apply a number of black n white optical art like effects. It can be extended to include the original image or variants or additional effects. The core effect is the line or the warping of the line or how the lines overlap (depending on whether factor1, 2, or 3 are in play). Don't stare at the end results for too long... unless you love looking at all those opArt pictures in those DoverTM books all day long (and great books they are, too)

Please note that some of the controls have multiple purposes - the prime purpose is indicated. Also note that some of the controls will have no effect such as the X and Y if the (*) has not been set to on. Some of the options in the dropdowns use the X Y, or if no inverse option is set then the () will be ignored. Also note that the preview might not match the end result - especially if the setting is at less than 25% or so - to get a 99% accurate view of the end result please set the preview to 100%.

X - x coordinate. This is generally used by the spotlight (*). The spotlight applies the (*) factor to the current effect. By setting it to 0,0 the effect will be strongest in the top left corner - as you move the settings the spotlight will change position. Once the spotlight is past the edge of the picture the spotlight will just get brighter and brighter until it either obliterates the picture or completely darkens the picture (in most cases).

Y - y coordinate

f1 - the multiplication factor on 1-1 1-2 etc. If set to 0 then there will be no effect.

f2 - for 2-1 2-2 etc.

f3 - for 3-1 3-2

== - Smoothing

Combo 1 - XY or radial

Combo 2 - Variant modes for '1'

Combo 3 - for '2'

Combo 4 - for '3' where 1, 2, and 3 relate to the settings above f1, f2, etc.

Combo 5 - The mixing effect (not using thresholds this time) - if the mix is not a pure op art effect then the effect with either default to the image when set to RGB replace or to the selected effect

Combo 6 - Output

Mix - Mix image with effect

() - Inverse effects - this will modify how the inverse is applied - if set to 255 then it is a 'true' inverse

1-1 etc. increasing this will modify the lines generated

1-2 - 3-3 - as above

Warp - additional effect on the lines generated.

Cancel - Cancel effect

OK - apply

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