Filter Forge - [bug] if then else acting oddly (Staff: By design)

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Rachel Duim So Called Tortured Artist Posts: 2498 Filters: 188	I've attached a test filter. At the end of the chain before the result is an IF-THEN-ELSE component controlled by a Checkbox. If you change the value on the checkbox, the patterns leaving the THEN-ELSE part do not change. Unplug the inputs into the THEN-ELSE and change the checkbox. You will see the colors change. Mac OSX 10.10.4, FF 5.004 if-then-else-test.ffxml Math meets art meets psychedelia.
	Posted: August 27, 2015 9:10 pm	Details E-Mail
GMM Moderator Filter Forge, Inc Posts: 3491	It's not a bug, it's cunning behavior of the If component. It performs channel-wise comparison of the two source colors and generates the output based on this comparison. In your case the alpha channel of the Source A and Source B colors is identical, thus the result borrows its alpha from the Then input. Yes, this is kinda counter-intuitive, I know
	Posted: August 28, 2015 8:58 am	Details E-Mail
Rachel Duim So Called Tortured Artist Posts: 2498 Filters: 188	I wondered if it had something to do with shared alpha. In this case if-then-else looks elegant, but a switch is clearly more efficient. Curiosity said, let's try this... Math meets art meets psychedelia.
	Posted: August 28, 2015 12:39 pm	Details E-Mail

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