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Revision as of 21:55, 25 July 2007 (edit) Sandman (Talk | contribs) m ← Previous diff		Current revision (15:54, 1 March 2008) (edit) (undo) Sandman (Talk | contribs)
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	Returns the horizontal distance in pixels of a specified displacement.		Returns the horizontal distance in pixels of a specified displacement.
		+
		+	This is the same as <code>[[cos]](''angle'')*''distance''</code>.
	== Parameters ==		== Parameters ==
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	== Notes ==		== Notes ==
	This function returns the width of an imaginary rectangle who's opposite corners are the specified distance apart, at the specified [[angle]] from each other.		This function returns the width of an imaginary rectangle who's opposite corners are the specified distance apart, at the specified [[angle]] from each other.
		+
		+	{{Image
		+	| image = get_distxy.png
		+	| caption = [[get_distx]]() and [[get_disty]]()
		+	}}
	== Example ==		== Example ==
	<pre>		<pre>
-	Program example;	+	Global
-	global	+
	xdist;		xdist;
	ydist;		ydist;
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	ang;		ang;
	mydraw;		mydraw;
		+	End
		+
		+	Process Main()
	Begin		Begin
		+
	set_mode(640,480,16);		set_mode(640,480,16);
-	set_fps(50,0);	+	set_fps (50,0);
-	graph=new_map(3,3,16);	+	graph = new_map(3,3,16);
	map_clear(0,graph,rgb(0,255,0));		map_clear(0,graph,rgb(0,255,0));
-	x=320;y=240;	+	x = 320;
		+	y = 240;
	set_text_color(rgb(0,0,0));		set_text_color(rgb(0,0,0));
-	write(0,60,0,2,"X Diff: ");	+	write (0,60, 0,2,"X Diff: ");
-	write_int(0,60,0,0,&xdist);	+	write_int(0,60, 0,0,&xdist);
-	write(0,60,10,2,"Y Diff: ");	+	write (0,60,10,2,"Y Diff: ");
	write_int(0,60,10,0,&ydist);		write_int(0,60,10,0,&ydist);
-	write(0,60,20,2,"Angle: ");	+	write (0,60,20,2,"Angle: ");
	write_int(0,60,20,0,&ang);		write_int(0,60,20,0,&ang);
-	write(0,60,30,2,"Distance: ");	+	write (0,60,30,2,"Distance: ");
	write_int(0,60,30,0,&dist);		write_int(0,60,30,0,&dist);
-	write(0,10,40,0,"Left/right rotates your angle, up/down changes your distance");	+	write (0,10,40,0,"Left/right rotates your angle, up/down changes your distance");
	put(0,graph,x,y);		put(0,graph,x,y);
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	end		end
-	xdist=get_distx(ang,dist);	+	xdist = get_distx(ang,dist);
-	ydist=get_disty(ang,dist);	+	ydist = get_disty(ang,dist);
-	x=320+xdist;	+	x = 320 + xdist;
-	y=240+ydist;	+	y = 240 + ydist;
	frame;		frame;
-
	until(key(_esc))		until(key(_esc))
		+
		+	let_me_alone();
	exit();		exit();
		+
	End		End
-	process drawing_background()	+	Process drawing_background()
-	begin	+	Begin
-	graph=new_map(640,480,16);set_center(0,graph,0,0);map_clear(0,graph,rgb(64,0,0));	+	graph = new_map(640,480,16);
-	drawing_map(0,graph);drawing_color(rgb(0,0,0));	+	set_ceter (0,graph,0,0);
		+	map_clear (0,graph,rgb(64,0,0));
		+	drawing_map (0,graph);
		+	drawing_color(rgb(0,0,0));
	loop		loop
-	if(mydraw>0)delete_draw(mydraw);end
	map_clear(0,graph,rgb(255,255,255));		map_clear(0,graph,rgb(255,255,255));
-	mydraw=draw_line(320,240,father.x,father.y);	+	mydraw = draw_line(320,240,father.x,father.y);
-	frame;	+	frame;
		+	delete_draw(mydraw);
	end		end
-	end	+	OnExit
		+	unload_map(0,graph);
		+	End
	</pre>		</pre>
		+	Used in example: [[set_mode]](), [[set_fps]](), [[new_map]](), [[set_text_color]](), [[write]](), [[write_int]](), [[put]](), [[key]](), [[get_distx]](), [[get_disty]](), [[let_me_alone]](), [[exit]](), [[set_center]](), [[map_clear]](), [[rgb]](), [[drawing_map]](), [[drawing_color]](), [[draw_line]](), [[delete_draw]](), [[unload_map]]()
		+
		+	{{Funcbox
		+	| category = Math
		+	}}

---

Current revision

Contents 1 Definition 2 Parameters 3 Returns 4 Notes 5 Example

[edit] Definition

INT get_distx ( <INT angle> , <INT distance> )

Returns the horizontal distance in pixels of a specified displacement.

This is the same as cos(angle)*distance.

[edit] Parameters

INT angle	- Angle, in thousandths of degrees (90° = 90000).
INT distance	- Length (in pixels) to measure.

[edit] Returns

INT : The horizontal distance, in pixels, of a specified displacement.

[edit] Notes

This function returns the width of an imaginary rectangle who's opposite corners are the specified distance apart, at the specified angle from each other.

get_distx() and get_disty()

[edit] Example

Global
    xdist;
    ydist;
    dist;
    ang;
    mydraw;
End

Process Main()
Begin

    set_mode(640,480,16);
    set_fps (50,0);
    graph = new_map(3,3,16);
    map_clear(0,graph,rgb(0,255,0));
    x = 320;
    y = 240;

    set_text_color(rgb(0,0,0));
    write    (0,60, 0,2,"X Diff: ");
    write_int(0,60, 0,0,&xdist);
    write    (0,60,10,2,"Y Diff: ");
    write_int(0,60,10,0,&ydist);
    write    (0,60,20,2,"Angle: ");
    write_int(0,60,20,0,&ang);
    write    (0,60,30,2,"Distance: ");
    write_int(0,60,30,0,&dist);

    write    (0,10,40,0,"Left/right rotates your angle, up/down changes your distance");
    
    put(0,graph,x,y);
    drawing_background();

    repeat
        if(key(_up))
            dist++;
        end

        if(key(_down))
            dist--;
        end

        if(key(_left))
            ang-=1000;
        end

        if(key(_right))
            ang+=1000;
        end

        xdist = get_distx(ang,dist);
        ydist = get_disty(ang,dist);

        x = 320 + xdist;
        y = 240 + ydist;

        frame;

    until(key(_esc))

    let_me_alone();
    exit();

End

Process drawing_background()
Begin
    graph = new_map(640,480,16);
    set_ceter   (0,graph,0,0);
    map_clear    (0,graph,rgb(64,0,0));
    drawing_map  (0,graph);
    drawing_color(rgb(0,0,0));
    loop
        map_clear(0,graph,rgb(255,255,255));
        mydraw = draw_line(320,240,father.x,father.y);
        frame;
        delete_draw(mydraw);
    end
OnExit
    unload_map(0,graph);
End

Used in example: set_mode(), set_fps(), new_map(), set_text_color(), write(), write_int(), put(), key(), get_distx(), get_disty(), let_me_alone(), exit(), set_center(), map_clear(), rgb(), drawing_map(), drawing_color(), draw_line(), delete_draw(), unload_map()

Math Functions

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