getTriangularHeight static method

double getTriangularHeight(
  1. Offset rightAnglePoint,
  2. Offset other,
  3. Offset other2
)

传入直角三角形3个顶点，然后计算斜边为底的高度h

Implementation

static double getTriangularHeight(
    Offset rightAnglePoint, Offset other, Offset other2) {
  //先计算3边长度
  //斜边
  final hypotenuse = distanceTo(other, other2);
  //另外两条边
  final section = distanceTo(other, rightAnglePoint);
  final section2 = distanceTo(other2, rightAnglePoint);
  final h = section * section2 / hypotenuse;
  return h;
}