83 lines
1.2 KiB
C
83 lines
1.2 KiB
C
/*
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* Copyright (c) 1993-1995 by Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: position.h 1.3 1995/02/22 21:37:19 sam Exp $
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* $Locker: $
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*
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* Structure descibing a position in 3D space - used for actors
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*/
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#ifndef _POSITION_H_
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#define _POSITION_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Type of actor position
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*/
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enum p3d_actor_position_type {
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P3D_POSITION_IDENTITY,
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P3D_POSITION_TRANSFORM,
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P3D_POSITION_EULER,
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P3D_POSITION_QUATERNION,
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P3D_POSITION_TRANSLATION,
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P3D_POSITION_LOOK_UP
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};
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struct p3d_position {
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/*
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* Type of position
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*/
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uint_16 t;
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/*
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* Union of the various means of describing a position
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*/
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union {
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/*
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* General matrix - (XXX Should also have affine (3x4))
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*/
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struct p3d_transform transform;
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/*
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* Euler angles and translation
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*/
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struct {
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struct p3d_euler e;
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point3 t;
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} euler;
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/*
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* Unit quaternion and translation
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*/
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struct {
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struct p3d_quaternion q;
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point3 t;
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} quaternion;
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/*
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* Lookat vector, up vector and translation
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*/
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struct {
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vector3 look;
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vector3 up;
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point3 t;
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} look;
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/*
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* Just a translation
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*/
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struct {
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point3 t;
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} translation;
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} p;
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};
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#ifdef __cplusplus
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};
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#endif
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#endif
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