mirror

This function creates a "mirror" which displays a specific area of the Minecraft window on top of the waywall window. You may want to use it for e.g. boat eye measurement.

The options table can have the following options, although only src and dst are required:

{
    -- area to copy from minecraft window
    src = {
        x = 160,
        y = 900,
        w = 100,
        h = 100,
    },

    -- absolute location/size of mirror in waywall window
    dst = {
        x = 0,
        y = 300,
        w = 100,
        h = 100,
    },

    -- optional
    color_key = {
        input = "#dddddd",
        output = "#ee1111",
    },

    -- optional
    shader = "shader_name",
}

The color_key option allows you to perform color keying on the mirrored area, which will only preserve pixels of the given input color and change them to the output color.

For more information on custom shaders, see Shaders.

Mirror object

This function will return an object which can be used to remove the mirror from the waywall window at a later point. The only method made available by the returned mirror object is close.

If this object is not stored in a permanent location, the mirror may randomly disappear when it gets garbage collected.

Arguments

• options: table

Return values

• mirror: table

This function cannot be called during startup.