setViewport method

void setViewport(
  1. double viewportWidth,
  2. double viewportHeight
)

Implementation

void setViewport(double viewportWidth, double viewportHeight) {
  assert(viewportWidth > 0, "viewportWidth cannot be 0 or lower");
  assert(viewportHeight > 0, "viewportHeight cannot be 0 or lower");
  final cx = centerX, cy = centerY;
  _viewportWidth = viewportWidth;
  _viewportHeight = viewportHeight;
  centerX = cx;
  centerY = cy;
}