utils/conversions library

Functions

childTransform(Offset position, Size size, double rotation, {double scale = 1}) → Matrix4

Maps local child coordinates to the parent, rotating around the layout center. Used by painting, pointer targeting, coordinate conversion and focus bounds.

gsToSs(Offset gsPosition, Offset gsTopLeft, double scale) → Offset

Convert grid space coordinates to screen space coordinates

newGsTopLeftOnScaling(Offset gsTopLeft, Offset ssFocalPoint, double oldScale, double newScale) → Offset

ssToGs(Offset ssPosition, Offset gsTopLeft, double scale) → Offset

Convert screen space coordinates to grid space coordinates