Near angle

Definition

INT near_angle ( <INT angle> , <INT final angle> , <INT increment> )

Returns an angle closer to another angle, with the indicated increment. It is used for aiming the original angle and it gradually changes into the final angle. The increment controls the rate in wich the final angle is added or subtracted from the orginal angle. The returned angle will be ranging from 0 to 360000 (0-360º).

Parameters

INT angle	- The original angle.
INT final angle	- The new angle.
INT increment	- The addition or subtraction rate between the two angles.

Returns

INT : An angle nearer the final angle.

Notes

The angle value returned by this function is in thousandths of degrees, as most angles within Bennu are.

Example

/* Modified example converted from bennupack, fenix test section, 2 Medium\fenix test\Fenix Test3\Test_NEAR_ANGLE.prg */

// import modules
IMPORT "mod_say";
IMPORT "mod_debug";
//IMPORT "mod_math";
IMPORT "mod_mathi";
IMPORT "mod_map";
IMPORT "mod_key";
IMPORT "mod_video";
IMPORT "mod_screen";
IMPORT "mod_mouse";
IMPORT "mod_proc";
IMPORT "mod_grproc";

GLOBAL

   int fpg;
   int ang;
   //int increment=5000;
   int increment=10000;
   //int increment=25000;
   //int increment=50000;
    
  
PROCESS main();
  
BEGIN
  
  full_screen=false;
  fpg=load_fpg("Fpg.fpg");
  
  say("Test near_angle...");
  say("Press ESC to quit, and use mouse to move triangle.");
   
  put_screen(fpg,2);
  
  // set the mouse cursor 
  mouse.graph=200;
  mouse.x=0;
  mouse.y=0;
  
  graph=101;
  
  REPEAT
  
    // Returns the angle between two certain points. The returned angle will be ranging from 0 to 360000 (0-360º). 
    ang=fget_angle(x,y,mouse.x,mouse.y);
    
    // int near_angle (int <angle>, int <final angle>, int <increment>)
    angle=near_angle(angle,ang,increment);
         
    say("angle: "+angle);
    say("ang: "+ang);
    say("increment: "+increment);   
    
    advance(5);
    FRAME;
  UNTIL(key(_esc))
  
END

Used in example: say(), fget_angle(), key(), Advance(), mouse, graph, x, y, angle

Math Functions

Abs()Acos()Asin()Atan()Atan2()Cos()Fget_angle()Fget_dist()Finite()Get_distx()Get_disty()Isinf()Isnan()Near_angle()Pow()Rand()Rand_seed()Sin()Sqrt()Tan()