applyZoomAtPoint method

void applyZoomAtPoint(
  1. Offset focalPoint,
  2. double zoomFactor
)

Implementation

void applyZoomAtPoint(Offset focalPoint, double zoomFactor) {
  setState(() {
    currentOrigin = focalPoint + (currentOrigin - focalPoint) * zoomFactor;
    currentScale = (currentScale * zoomFactor).clamp(1.0, 3000.0);
  });
}