getColor

This function has two versions: getColor(vec2) and getColor(int, vec2).

getColor(vec2)

Description:

• Retrieves the color of the input layer at a specified position.

Parameters:

• vec2: UV position (range 0 to 1 in each dimension)

Returns:

• vec4: RGBA color (range 0 to 1 in each dimension)

getColor(int, vec2)

Description:

• Retrieves the pixel of a specific input layer at a specified position.

Parameters:

• int: Layer index, -1 (or AE_INPUT_LAYER) refers to the input layer, numbers 0-9 refer to the corresponding layer parameters on the plugin panel (PW_TEMP_LAYER (Layer index-2) used in Lua rendering mode).
• vec2: UV coordinates

Returns:

• vec4: RGBA color

Note:

• In summary, getColor(AE_INPUT_LAYER, uv); and getColor(uv) are equivalent;
• getColor(n, uv); can return pixel information of layer[n].