when method

void when({ required void onFloat(double value), required void onLinearZoomFunctionPoints(StylingLinearZoomFunctionPoints value), required void onLinearTiltFunctionPoints(StylingLinearTiltFunctionPoints value), required void onBilinearFunctionMatrix(StylingBilinearFunctionMatrix value), })

Applies the passed function to the variant value.

Implementation

void when({
  required void Function(core.double value) onFloat,
  required void Function(StylingLinearZoomFunctionPoints value)
      onLinearZoomFunctionPoints,
  required void Function(StylingLinearTiltFunctionPoints value)
      onLinearTiltFunctionPoints,
  required void Function(StylingBilinearFunctionMatrix value)
      onBilinearFunctionMatrix,
}) {
  if (_value is core.double) {
    return onFloat(_value as core.double);
  }
  if (_value is StylingLinearZoomFunctionPoints) {
    return onLinearZoomFunctionPoints(
        _value as StylingLinearZoomFunctionPoints);
  }
  if (_value is StylingLinearTiltFunctionPoints) {
    return onLinearTiltFunctionPoints(
        _value as StylingLinearTiltFunctionPoints);
  }
  if (_value is StylingBilinearFunctionMatrix) {
    return onBilinearFunctionMatrix(_value as StylingBilinearFunctionMatrix);
  }
  assert(false);
}