GetScreenFromWorldPosition: Difference between revisions

Latest revision as of 17:29, 2 April 2023

This function gets the screen position of a point in the world. This is useful for attaching 2D gui elements to parts of the world (e.g. players) or detecting if a point is on the screen (though it does not check if it is actually visible, you should use processLineOfSight for that).

Syntax

float, float, float getScreenFromWorldPosition ( float x, float y, float z [, float edgeTolerance = 0.0, bool relative = true ] )

Required Arguments

x: A float value indicating the x position in the world.
y: A float value indicating the y position in the world.
z: A float value indicating the z position in the world.

Optional Arguments

NOTE: When using optional arguments, you might need to supply all arguments before the one you wish to use. For more information on optional arguments, see optional arguments.

edgeTolerance: A float value indicating the distance the position can be off screen before the function returns false. Note: it's clamped down on both axies to the size of screen at the given axis*10
relative: A boolean value that indicates if edgeTolerance is in pixels [false], or relative to the screen size [true].

Returns

Returns two x, y floats indicating the screen position and float distance between screen and given position if successful, false otherwise.

Example

Click to collapse [-]

Client-side Script

This example add a '3d' text at coordinates 0, 0, 0 (center of map).

addEventHandler ( "onClientRender", root,
function ( )
	if ( getDistanceBetweenPoints3D ( 0, 0, 3, getElementPosition ( localPlayer ) ) ) < 50 then
		local coords = { getScreenFromWorldPosition ( 0, 0, 3 ) }
		if coords[1] and coords[2] then
			dxDrawText ( "Hello !", coords[1], coords[2], coords[1], coords[2], tocolor(255,255,255), 1, "default-bold" )
		end
	end
end )

@@ Line 1: / Line 1: @@
+__NOTOC__
 {{Client function}}
+This function gets the screen position of a point in the world. This is useful for attaching 2D gui elements to parts of the world (e.g. players) or detecting if a point is on the screen (though it does not check if it is actually visible, you should use [[processLineOfSight]] for that).
 ==Syntax==
 <syntaxhighlight lang="lua">
-float float getScreenFromWorldPosition ( float x, float y, float z )
+float, float, float getScreenFromWorldPosition ( float x, float y, float z [, float edgeTolerance = 0.0, bool relative = true ] )
 </syntaxhighlight>
+===Required Arguments===
+*'''x:''' A float value indicating the x position in the world.
+*'''y:''' A float value indicating the y position in the world.
+*'''z:''' A float value indicating the z position in the world.
+===Optional Arguments===
+{{OptionalArg}}
+{{New feature/item|3|1.0||
+*'''edgeTolerance:''' A [[float]] value indicating the distance the position can be off screen before the function returns false. Note: it's clamped down on both axies to the size of screen at the given axis*10
+*'''relative:''' A [[boolean]] value that indicates if edgeTolerance is in pixels [false], or relative to the screen size [true].
+}}
+===Returns===
+Returns two ''x'', ''y'' [[float]]s indicating the screen position and [[float]] distance between screen and given position if successful, ''false'' otherwise.
+===Example===
+<section class="client" name="Client-side Script" show="true">
+This example add a '3d' text at coordinates 0, 0, 0 (center of map).
+<syntaxhighlight lang="lua">
+addEventHandler ( "onClientRender", root,
+function ( )
+	if ( getDistanceBetweenPoints3D ( 0, 0, 3, getElementPosition ( localPlayer ) ) ) < 50 then
+		local coords = { getScreenFromWorldPosition ( 0, 0, 3 ) }
+		if coords[1] and coords[2] then
+			dxDrawText ( "Hello !", coords[1], coords[2], coords[1], coords[2], tocolor(255,255,255), 1, "default-bold" )
+		end
+	end
+end )
+</syntaxhighlight>
+</section>
+==See Also==
+{{Client_world_functions}}