C Library Functions  - polar_to_cartesian (3)

NAME
polar_to_cartesian(3f) - [M_pixel:TRIGONOMETRY] convert polar coordinates to Cartesian coordinates (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Results
Examples
Author
License

SYNOPSIS
subroutine polar_to_cartesian(radius,inclination,x,y) 

    real,intent(in) :: radius,inclination
    real,intent(out)  :: x,y

DESCRIPTION
Convert polar coordinate <radius, inclination > with angles in radians to cartesian point <X,Y> using the formulas 

      x=radius*cos(inclination)
      y=radius*sin(inclination)

OPTIONS
RADIUS The radial distance from the origin (O) to the point (P)
INCLINATION
  The INCLINATION angle in radians between the inclination reference direction (x-axis) and the orthogonal projection of the line OP of the reference plane (x-y plane).

RESULTS
X The distance along the x-axis
Y The distance along the y-axis

EXAMPLES
examples of usage 

   program demo_polar_to_cartesian
   use M_pixel, only : polar_to_cartesian
   implicit none
   real    :: x,y
   real    :: r,i
   !!integer :: ios


    !!INFINITE: do
    !!   write(*,advance=’no’)’Enter radius and inclination(in radians):’
    !!   read(*,*,iostat=ios) r, i
    !!   if(ios.ne.0)exit INFINITE
       call polar_to_cartesian(r,i,x,y)
       write(*,*)’x=’,x,’ y=’,y,’radius=’,r,’inclination=’,i
    !!enddo INFINITE
   end program demo_polar_to_cartesian

AUTHOR
John S. Urban

LICENSE
Public Domain

Nemo Release 3.1 polar_to_cartesian (3) July 22, 2023
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