positionCameraToWorld: Difference between revisions

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|gr2= Positions
|gr2= Positions


|descr=[[File:PositionCameraToWorld.jpg|right|120x120px]]Transforms position from camera coordinate space to world coordinate space.  
|descr= [[File:PositionCameraToWorld.jpg|right|200px]]Get the world coordinate space ({{Link|Position#PositionAGL|AGL}}) from a camera-relative position.<br>


Camera axes are relative to camera orientation. x axis goes from left of the camera to right of the camera, z axis goes from underneath the camera to above the camera and y axis goes from back of the camera to where the camera is looking.


|s1= [[positionCameraToWorld]] cameraPos
|s1= [[positionCameraToWorld]] cameraPos


|p1= cameraPos: [[Position#PositionRelative|PositionRelative]] - Relative camera position, format [x, z, y]{{Feature | important | Note that y and z for this command are swapped around, which is different from your usual model space coordinates format}}
|p1= cameraPos: [[Position#PositionRelative|PositionRelative]] - relative camera position, format '''[x, z, y]''' (X = left-right, Z = below-above, Y = back-front)
{{Feature|important|This command has Y and Z axes swapped around, which is different from the usual model space coordinates format ({{Link|Position|[x, y, z]}}).}}


|r1= [[Array]] - Camera world position, format [[Position#PositionAGL|PositionAGL]]
|r1= [[Array]] - camera world position, format [[Position#PositionAGL|PositionAGL]]


|x1= <sqf>_worldPos = positionCameraToWorld _cameraPos;</sqf>
|x1= <sqf>_worldPos = positionCameraToWorld _cameraPos;</sqf>


|x2= Example demonstrating reversed y and z:
|x2= Example demonstrating reversed Y and Z:
<code>[[player]] [[setDir]] 0; //assuming player is looking forward
<sqf>
[[hint]] [[str]] [<nowiki/>[[positionCameraToWorld]] [0,0,0], [[positionCameraToWorld]] [0,0,1]];
player setDir 0; // assuming player is looking forward
//[[2481.35,567'''1'''.21,1.51395],[2481.35,567'''2'''.21,1.46955]]
hint str [positionCameraToWorld [0,0,0], positionCameraToWorld [0,0,1]];
</code>
/*
[
[2481.35, 5671.21, 1.51395],
[2481.35, 5672.21, 1.46955]
]
*/
</sqf>
 
|x3= <sqf>_cameraAGLPosition = positionCameraToWorld [0,0,0];</sqf>


|seealso= [[modelToWorld]] [[modelToWorldVisual]] [[getCameraViewDirection]] [[weaponDirection]] [[eyeDirection]] [[vectorDir]] [[vectorDirVisual]]
|seealso= [[modelToWorld]] [[modelToWorldVisual]] [[getCameraViewDirection]] [[weaponDirection]] [[eyeDirection]] [[vectorDir]] [[vectorDirVisual]]
}}
}}


<dl class="command_description">
{{Note
|user= Kronzky
|timestamp= 20081017112500
|text= By measuring the distance between the camera and the player one can determine whether 1st-person or 3rd-person view is being used:
<sqf>if ((positionCameraToWorld [0,0,0] distance player)>2) then { hint "3rd person" } else { hint "1st person" };</sqf>
}}


<dt></dt>
{{Note
<dd class="notedate">Posted on October 17, 2008 - 11:25</dd>
|user= Worldeater
<dt class="note">[[User:Kronzky|Kronzky]]</dt>
|timestamp= 20101017224500
<dd class="note">
|text= The camera coordinate system is different from the model coordinate system: when [[modelToWorld]] uses [x, y, z] then positionCameraToWorld uses [x, z, y]. So for a steady camera the following is true:
By measuring the distance between the camera and the player one can determine whether 1st-person or 3rd-person view is being used:
<sqf>positionCameraToWorld [5,10,15] == _camera modelToWorld [5,15,10];</sqf>
<code>if ((positionCameraToWorld [0,0,0] distance player)>2) then {hint "3rd person"} [[else]] {[[hint]] "1st person"};</code>
}}
<dd class="notedate">Posted on 22:45, 17 October 2010 (CEST)</dd>
<dt class="note">[[User:Worldeater|Worldeater]]</dt>
<dd class="note">
The camera coordinate system is different from the model coordinate system: when [[modelToWorld]] uses [x, y, z] then positionCameraToWorld uses [x, z, y]. So for a steady camera the following is true:
<code>positionCameraToWorld [5,10,15] == _camera modelToWorld [5,15,10];</code>
 
<dt></dt>
<dd class="notedate">Posted on July 20, 2014 - 20:07 (UTC)</dd>
<dt class="note">[[User:AgentRevolution|AgentRev]]</dt>
<dd class="note">
When over land, the position returned is in format [[Position#PositionATL|PositionATL]], and over sea, [[Position#PositionASLW|PositionASLW]].
</dd>
 
</dl>

Latest revision as of 23:27, 24 March 2024

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Hover & click on the images for description

Description

Description:
PositionCameraToWorld.jpg
Get the world coordinate space (AGL) from a camera-relative position.
Groups:
Camera ControlPositions

Syntax

Syntax:
positionCameraToWorld cameraPos
Parameters:
cameraPos: PositionRelative - relative camera position, format [x, z, y] (X = left-right, Z = below-above, Y = back-front)
⚠
This command has Y and Z axes swapped around, which is different from the usual model space coordinates format ([x, y, z]).
Return Value:
Array - camera world position, format PositionAGL

Examples

Example 1:
_worldPos = positionCameraToWorld _cameraPos;
Example 2:
Example demonstrating reversed Y and Z:
player setDir 0; // assuming player is looking forward hint str [positionCameraToWorld [0,0,0], positionCameraToWorld [0,0,1]]; /* [ [2481.35, 5671.21, 1.51395], [2481.35, 5672.21, 1.46955] ] */
Example 3:
_cameraAGLPosition = positionCameraToWorld [0,0,0];

Additional Information

See also:
modelToWorld modelToWorldVisual getCameraViewDirection weaponDirection eyeDirection vectorDir vectorDirVisual

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
Kronzky - c
Posted on Oct 17, 2008 - 11:25 (UTC)
By measuring the distance between the camera and the player one can determine whether 1st-person or 3rd-person view is being used:
if ((positionCameraToWorld [0,0,0] distance player)>2) then { hint "3rd person" } else { hint "1st person" };
Worldeater - c
Posted on Oct 17, 2010 - 22:45 (UTC)
The camera coordinate system is different from the model coordinate system: when modelToWorld uses [x, y, z] then positionCameraToWorld uses [x, z, y]. So for a steady camera the following is true:
positionCameraToWorld [5,10,15] == _camera modelToWorld [5,15,10];
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