v0.5.1 - Port Coordinate System Fix

Bug Fixes

• Fixed edge drag offset: Resolved issue where edge dragging was severely offset from cursor when using custom port renderers
• Root cause: Coordinate system mismatch between screen coordinates (for hit testing) and canvas coordinates (for MainCanvas rendering with MatrixTransform)

API Improvements

• New explicit coordinate methods:
  • GetPortScreenPosition() - Returns port position in screen coordinates (for hit testing, distance calculations)
  • GetPortCanvasPosition() - Returns port position in canvas coordinates (for drawing on MainCanvas)
• Previous GetPortPosition() renamed to GetPortScreenPosition() for clarity

Migration

If you were using GraphRenderer.GetPortPosition(), update to use either:

• GetPortScreenPosition() for hit testing and distance calculations
• GetPortCanvasPosition() when drawing on the canvas