Update XPLM for ARM64
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{
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Copyright 2005-2012 Sandy Barbour and Ben Supnik
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All rights reserved. See license.txt for usage.
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X-Plane SDK Version: 2.1.1
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Copyright 2005-2012 Sandy Barbour and Ben Supnik All rights reserved. See
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license.txt for usage. X-Plane SDK Version: 2.1.1
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}
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UNIT XPLMCamera;
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INTERFACE
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{
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XPLMCamera - THEORY OF OPERATION The XPLMCamera APIs allow plug-ins to
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control the camera angle in X-Plane. This has a number of applications,
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including but not limited to:
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The XPLMCamera APIs allow plug-ins to control the camera angle in X-Plane.
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This has a number of applications, including but not limited to:
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- Creating new views (including dynamic/user-controllable views) for the
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user.
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- Creating new views (including dynamic/user-controllable views) for the
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user.
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- Creating applications that use X-Plane as a renderer of scenery,
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aircrafts, or both.
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- Creating applications that use X-Plane as a renderer of scenery,
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aircrafts, or both.
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The camera is controlled via six parameters: a location in OpenGL
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coordinates and pitch, roll and yaw, similar to an airplane's position.
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OpenGL coordinate info is described in detail in the XPLMGraphics
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documentation; generally you should use the XPLMGraphics routines to
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convert from world to local coordinates. The camera's orientation starts
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facing level with the ground directly up the negative-Z axis (approximately
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north) with the horizon horizontal. It is then rotated clockwise for yaw,
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pitched up for positive pitch, and rolled clockwise around the vector it is
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looking along for roll.
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The camera is controlled via six parameters: a location in OpenGL
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coordinates and pitch, roll and yaw, similar to an airplane's position.
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OpenGL coordinate info is described in detail in the XPLMGraphics
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documentation; generally you should use the XPLMGraphics routines to
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convert from world to local coordinates. The camera's orientation starts
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facing level with the ground directly up the negative-Z axis
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(approximately north) with the horizon horizontal. It is then rotated
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clockwise for yaw, pitched up for positive pitch, and rolled clockwise
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around the vector it is looking along for roll.
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You control the camera either either until the user selects a new view or
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permanently (the later being similar to how UDP camera control works). You
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control the camera by registering a callback per frame from which you
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calculate the new camera positions. This guarantees smooth camera motion.
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You control the camera either either until the user selects a new view or
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permanently (the later being similar to how UDP camera control works). You
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control the camera by registering a callback per frame from which you
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calculate the new camera positions. This guarantees smooth camera motion.
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Use the XPLMDataAccess APIs to get information like the position of the
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aircraft, etc. for complex camera positioning.
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Use the XPLMDataAccess APIs to get information like the position of the
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aircraft, etc. for complex camera positioning.
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Note: if your goal is to move the virtual pilot in the cockpit, this API is
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not needed; simply update the datarefs for the pilot's head position.
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For custom exterior cameras, set the camera's mode to an external view
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first to get correct sound and 2-d panel behavior.
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}
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USES XPLMDefs;
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USES
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XPLMDefs;
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{$A4}
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{$IFDEF MSWINDOWS}
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{$DEFINE DELPHI}
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{$ENDIF}
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{___________________________________________________________________________
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* CAMERA CONTROL
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___________________________________________________________________________}
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{
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}
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{
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XPLMCameraControlDuration
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This enumeration states how long you want to retain control of the camera.
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You can retain it indefinitely or until the user selects a new view.
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This enumeration states how long you want to retain control of the camera.
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You can retain it indefinitely or until the user selects a new view.
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}
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TYPE
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XPLMCameraControlDuration = (
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{ Control the camera until the user picks a new view. }
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{ Control the camera until the user picks a new view. }
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xplm_ControlCameraUntilViewChanges = 1
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{ Control the camera until your plugin is disabled or another plugin forcably }
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{ takes control. }
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{ Control the camera until your plugin is disabled or another plugin forcably}
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{ takes control. }
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,xplm_ControlCameraForever = 2
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);
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@@ -72,103 +67,89 @@ TYPE
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{
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XPLMCameraPosition_t
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This structure contains a full specification of the camera. X, Y, and Z
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are the camera's position in OpenGL coordiantes; pitch, roll, and yaw are
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rotations from a camera facing flat north in degrees. Positive pitch means
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nose up, positive roll means roll right, and positive yaw means yaw right,
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all in degrees. Zoom is a zoom factor, with 1.0 meaning normal zoom and 2.0
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magnifying by 2x (objects appear larger).
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This structure contains a full specification of the camera. X, Y, and Z are
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the camera's position in OpenGL coordiantes; pitch, roll, and yaw are
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rotations from a camera facing flat north in degrees. Positive pitch means
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nose up, positive roll means roll right, and positive yaw means yaw right,
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all in degrees. Zoom is a zoom factor, with 1.0 meaning normal zoom and 2.0
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magnifying by 2x (objects appear larger).
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}
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XPLMCameraPosition_t = RECORD
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x : single;
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y : single;
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z : single;
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pitch : single;
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heading : single;
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roll : single;
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zoom : single;
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x : Single;
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y : Single;
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z : Single;
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pitch : Single;
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heading : Single;
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roll : Single;
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zoom : Single;
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END;
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PXPLMCameraPosition_t = ^XPLMCameraPosition_t;
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{
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XPLMCameraControl_f
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You use an XPLMCameraControl function to provide continuous control over
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the camera. You are passed in a structure in which to put the new camera
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position; modify it and return 1 to reposition the camera. Return 0 to
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surrender control of the camera; camera control will be handled by X-Plane
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on this draw loop. The contents of the structure as you are called are
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undefined.
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You use an XPLMCameraControl function to provide continuous control over
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the camera. You are passed in a structure in which to put the new camera
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position; modify it and return 1 to reposition the camera. Return 0 to
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surrender control of the camera; camera control will be handled by X-Plane
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on this draw loop. The contents of the structure as you are called are
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undefined.
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If X-Plane is taking camera control away from you, this function will be
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called with inIsLosingControl set to 1 and ioCameraPosition NULL.
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If X-Plane is taking camera control away from you, this function will be
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called with inIsLosingControl set to 1 and ioCameraPosition NULL.
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}
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XPLMCameraControl_f = FUNCTION(
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outCameraPosition : PXPLMCameraPosition_t; { Can be nil }
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inIsLosingControl : integer;
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inRefcon : pointer) : integer; cdecl;
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inIsLosingControl : Integer;
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inRefcon : pointer) : Integer; cdecl;
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{
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XPLMControlCamera
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This function repositions the camera on the next drawing cycle. You must
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pass a non-null control function. Specify in inHowLong how long you'd like
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control (indefinitely or until a key is pressed).
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This function repositions the camera on the next drawing cycle. You must
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pass a non-null control function. Specify in inHowLong how long you'd like
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control (indefinitely or until a new view mode is set by the user).
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}
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PROCEDURE XPLMControlCamera(
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inHowLong : XPLMCameraControlDuration;
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inControlFunc : XPLMCameraControl_f;
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inRefcon : pointer);
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{$IFDEF DELPHI}
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cdecl; external 'XPLM.DLL';
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{$ELSE}
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cdecl; external '';
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{$ENDIF}
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cdecl; external XPLM_DLL;
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{
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XPLMDontControlCamera
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This function stops you from controlling the camera. If you have a camera
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control function, it will not be called with an inIsLosingControl flag.
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X-Plane will control the camera on the next cycle.
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This function stops you from controlling the camera. If you have a camera
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control function, it will not be called with an inIsLosingControl flag.
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X-Plane will control the camera on the next cycle.
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For maximum compatibility you should not use this routine unless you are in
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posession of the camera.
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For maximum compatibility you should not use this routine unless you are in
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posession of the camera.
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}
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PROCEDURE XPLMDontControlCamera;
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{$IFDEF DELPHI}
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cdecl; external 'XPLM.DLL';
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{$ELSE}
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cdecl; external '';
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{$ENDIF}
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cdecl; external XPLM_DLL;
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{
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XPLMIsCameraBeingControlled
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This routine returns 1 if the camera is being controlled, zero if it is
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not. If it is and you pass in a pointer to a camera control duration, the
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current control duration will be returned.
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This routine returns 1 if the camera is being controlled, zero if it is
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not. If it is and you pass in a pointer to a camera control duration, the
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current control duration will be returned.
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}
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FUNCTION XPLMIsCameraBeingControlled(
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outCameraControlDuration: PXPLMCameraControlDuration) : integer; { Can be nil }
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{$IFDEF DELPHI}
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cdecl; external 'XPLM.DLL';
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{$ELSE}
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cdecl; external '';
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{$ENDIF}
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outCameraControlDuration: PXPLMCameraControlDuration) : Integer; { Can be nil }
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cdecl; external XPLM_DLL;
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{
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XPLMReadCameraPosition
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This function reads the current camera position.
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This function reads the current camera position.
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}
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PROCEDURE XPLMReadCameraPosition(
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outCameraPosition : PXPLMCameraPosition_t);
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{$IFDEF DELPHI}
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cdecl; external 'XPLM.DLL';
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{$ELSE}
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cdecl; external '';
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{$ENDIF}
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cdecl; external XPLM_DLL;
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IMPLEMENTATION
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END.
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