setFillColorRgb method Null safety

void setFillColorRgb (
  1. int r,
  2. int g,
  3. int b,
  4. [num a = 1]
)

Sets the color used inside shapes. r, g, b are 0-255, a is 0-1.

Implementation

void setFillColorRgb(int r, int g, int b, [num a = 1]) {
  this.fillStyle = 'rgba($r, $g, $b, $a)';
}