uv2xy,xy2uv

This two functions can translate a vec2 between UV Coordinate and XY Coordinate. It just do some multiplication and division for you.

uv2xy(vec2)

Description :

• Calculate the xy position for a given uv position.

Parameters :

• vec2 : uv position.

Return :

• vec2 : xy position.

NOTE : If your layer size is 1280 x 720. The uv2xy(vec2(0.1,0.5)); will return vec2(128.0,360.0);

xy2uv(vec2)

Description :

• Calculate the uv position for a given xy position.

Parameters :

• vec2 : xy position.

Return :

• vec2 : uv position.

NOTE : If your layer size is 1920 x 1080. The xy2uv(vec2(192,108)); will return vec2(0.1,0.1);