57.1 World Coordinates🔗ℹ

A scene uses mathematical coordinates. Positive x points right. Positive y points up. A camera converts these world coordinates to pixels, where positive y points down.

Lengths in ordinary Visual values are normally measured in world units. Camera width and height are measured in pixels. Rotation is measured in counter-clockwise radians.

A frame-space Visual uses frame space, an origin-centered mathematical coordinate system attached to the output frame. Positive x points right and positive y points up. The frame-space wrapper captures its visible width when it is constructed, so later world-camera pan and zoom do not move or resize the overlay. Rendering uses the current output pixel width and height, so the same frame-space coordinates scale with the output resolution.