Offset Red value

[alagarr71636503]

hi all.

I am new to the after effect SDK, basically i develop Game in Unreal engine and Unity. but any way i cannot understand some functionality in the After effect SDK.

1. Is there any Flow chart that explains the flow of control in the plugin.

2. i want to offset and rotate the Red value based on a point. i cannot figure it out. can any one help me how to solve this .

[Christian Lett]

Hi, and welcome to the forums.

1. Not that I'm aware of, although the SDK Guide does describe the calling order on page 49.

2. Do you mean you want to offset and rotate the red channel of an image? If so, you'll need to copy your input into a new PF_EffectWorld, and use PF_WorldTransformSuite1->transform_world() (page 93) to transform the copy. Then you need to copy the red channel from the transformed world, and the green, blue and alpha channels from the input world into your output, using the Iterate Suite. That's one way, using the provided suites. You could always write your own transform function that operates on a single channel.

Christian