Hi,
Sorry, I guess this is kind of two questions…
** Marching Ants Effect
The ‘Marching Ants’ effect as defined here gives a black/white effect.
https://docs.coronalabs.com/guide/graphics/effects.html#generator.marchingants
The effect I would like to achieve is a white/alpha effect.
The link referred to on this post, is dead - https://forums.coronalabs.com/topic/62537-marching-ants-configurability/
I assume it’s supposed to point to the link above, but there’s no configurability documented there?
** Shaders on strokes
I’ve come up with this (likely terrible) shader - https://f25j6.app.goo.gl/LyEM - black/alpha for testing
I don’t know a lot about shaders - and I’m having a hell of a time getting it to apply to a newRoundedRect stroke.
local ants = {} ants.category = "generator" ants.name = "antspantz" ants.isTimeDependent = true ants.fragment = [[P\_COLOR vec4 FragmentKernel( P\_UV vec2 texCoord ){ vec4 CoronaVertexUserData = vec4(0,0,0,0); P\_COLOR vec4 ret = vec4(0, 0, 0, sin((CoronaTotalTime\*5.)+(texCoord.x\*50.)+(texCoord.y\*50.)) ); return CoronaColorScale(ret); }]] graphics.defineEffect( ants ) -- display.setDefault("background", .7, .7, .7) obj = display.newRoundedRect( 200, 200, 320, 320, 20 ) obj.fill = { 1,0,0,1 } obj.stroke = { 0,1,1,1 } obj.strokeWidth = 20 obj.stroke.effect = "generator.custom.antspantz"
produces different results in the simulator every time you run it ?!
change that last line to fill instead of stroke and it works - so I guess strokes are broken? 