This wiki is out of date, use the continuation of this wiki instead

From FenixWiki

Revision as of 00:08, 9 July 2007 (edit) Sandman (Talk | contribs) m (→Returns) ← Previous diff		Revision as of 11:00, 11 July 2007 (edit) (undo) Sandman (Talk | contribs) Next diff →
Line 23:		Line 23:
	== Notes ==		== Notes ==
	The [[angle]] value returned by this function is in thousandths of degrees, as most angles within [[Fenix]] are.		The [[angle]] value returned by this function is in thousandths of degrees, as most angles within [[Fenix]] are.
		+
		+	== Example ==
		+	<pre>
		+	Program angling;
		+	Const
		+	screen_width = 320;
		+	screen_height = 200;
		+	screen_depth = 8;
		+	Begin
		+
		+	// Set the screen mode
		+	set_mode(screen_width,screen_height,screen_depth);
		+
		+	// 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;
		+	y = screen_height/2;
		+
		+	// Always point to the mouse
		+	Repeat
		+	// Get the angle between this process' coordinates and those of the mouse.
		+	angle = fget_angle(x,y,mouse.x,mouse.y);
		+	frame;
		+	Until(key(_esc))
		+
		+	End
		+	</pre>
		+	Used in example: [[set_mode]](), [[new_map]](), [[map_clear]](), [[drawing_map]](), [[drawing_color]](), [[draw_line]](), [[mouse]], [[graph]], [[x]], [[y]], [[angle]]
		+
		+	This example could also be done with [[get_angle]](), but that would be more work.

---

Revision as of 11:00, 11 July 2007

Contents 1 Definition 2 Parameters 3 Returns 4 Notes 5 Example

Definition

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

Returns the angle between two certain points. The returned angle will be ranging from 0 to 360000 (0-360º).

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.

Returns

INT : The angle between point A and point B.

Notes

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

Example

Program angling;
Const
    screen_width = 320;
    screen_height = 200;
    screen_depth = 8;
Begin

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

    // 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;
    y = screen_height/2;

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

End

Used in example: set_mode(), new_map(), map_clear(), drawing_map(), drawing_color(), draw_line(), mouse, graph, x, y, angle

This example could also be done with get_angle(), but that would be more work.