This wiki is out of date, use the continuation of this wiki instead

Fget dist

From FenixWiki

(Difference between revisions)
Jump to: navigation, search
Revision as of 12:05, 11 July 2007 (edit)
Sandman (Talk | contribs)

← Previous diff
Current revision (15:09, 1 March 2008) (edit) (undo)
Sandman (Talk | contribs)

 
Line 77: Line 77:
Resolution is 100: Resolution is 100:
{| {|
-| http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/get_angle.PNG || VS || http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/fget_angle.PNG+| {{Image
-|-+ | image = get_angle.png
-| [[get_angle]]() and [[get_dist]]() with a [[process]] || || [[fget_angle]]() and [[fget_dist]]()+ | caption = [[get_angle]]() and [[get_dist]]()
 +}}
 + || VS || {{Image
 + | image = fget_angle.png
 + | caption = [[fget_angle]]() and [[fget_dist]]()
 +}}
|} |}
 +
 +{{Funcbox
 + | category = Math
 +}}

Current revision


Contents

[edit] Definition

INT fget_dist ( <INT pointA-X> , <INT pointA-Y> , <INT pointB-X> , <INT pointB-Y> )

Returns the distance between two certain points.

[edit] Parameters

INT pointA-X - The X-coordinate of point A.
INT pointA-Y - The Y-coordinate of point A.
INT pointB-X - The X-coordinate of point B.
INT pointB-Y - The Y-coordinate of point B.

[edit] Returns

INT : The distance between point A and point B.

[edit] Example

Program angling;
Const
    screen_width     = 320;
    screen_height    = 200;
    screen_depth     = 8;
    screen_fps       = 60;
    screen_frameskip = 0;
Global
    int distance;
    int tempID;
Begin

    // Set the screen mode
    set_mode(screen_width,screen_height,screen_depth);
    set_fps(screen_fps,screen_frameskip);

    // Change this to see what happens
    resolution = 100;

    // Create mouse graph, assign to mouse.graph
    mouse.graph = new_map(20,20,screen_depth);
    map_clear(0,mouse.graph,rgb(255,0,0));

    // Create arrow, assign to graph
    graph = new_map(30,30,screen_depth);
    drawing_map(0,graph);
    drawing_color(rgb(0,255,0));
    draw_line( 0,29,29,30/2);
    draw_line( 0, 0,30,30/2);

    // Set position
    x = screen_width /2 * resolution;
    y = screen_height/2 * resolution;

    // Display distance
    write(0,0,0,0,"Distance:");
    write_int(0,60,0,0,&distance);

    // Always point to the mouse
    Repeat
        // Get the angle and distance between this process' coordinates and those of the mouse.
        angle    = fget_angle(x,y,mouse.x*resolution,mouse.y*resolution);
        distance = fget_dist (x,y,mouse.x*resolution,mouse.y*resolution);
        frame;
    Until(key(_esc))

End

Used in example: set_mode(), new_map(), map_clear(), drawing_map(), drawing_color(), draw_line(), write(), write_int(), fget_angle(), fget_dist(), resolution, mouse, graph, x, y, angle

This example could also be done with get_dist(), but that would be more work. It also gives a much less accurate distance when the resolution is >1.

Resolution is 100:

Image:get_angle.png
get_angle() and get_dist()
VS
Image:fget_angle.png
fget_angle() and fget_dist()


Math Functions
Abs() • Acos() • Asin() • Atan() • Cos() • Fget_angle() • Fget_dist() • Get_distx() • Get_disty() • Pow() • Rand() • Rand_seed() • Sin() • Sqrt() • Tan() •
Personal tools