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142 lines
4.5 KiB
C
142 lines
4.5 KiB
C
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/*
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* Structure for splines
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*
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*
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* Copyright (c) Criterion Software Limited
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*/
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/******************************************/
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/* */
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/* RenderWare(TM) Graphics Library */
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/* */
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/******************************************/
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/*
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* This file is a product of Criterion Software Ltd.
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*
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* This file is provided as is with no warranties of any kind and is
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* provided without any obligation on Criterion Software Ltd.
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* or Canon Inc. to assist in its use or modification.
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*
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* Criterion Software Ltd. and Canon Inc. will not, under any
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* circumstances, be liable for any lost revenue or other damages
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* arising from the use of this file.
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*
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* Copyright (c) 1998. Criterion Software Ltd.
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* All Rights Reserved.
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*/
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/***************************************************************************
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* *
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* Module : rpspline.h *
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* *
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* Purpose : Spline operations *
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* *
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**************************************************************************/
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#ifndef RPSPLINE_H
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#define RPSPLINE_H
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/**
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* \defgroup rpspline RpSpline
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* \ingroup rpplugin
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*
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* Spline Plugin for RenderWare Graphics.
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*/
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/****************************************************************************
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Includes
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*/
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/*--- Include files ---*/
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#include "rwcore.h"
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#include "rpworld.h"
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#include "rpspline.rpe" /* automatically generated header file */
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/****************************************************************************
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Global Types
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*/
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#define rpSPLINENAMELENGTH (32)
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typedef struct RpSpline RpSpline;
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/**
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* \ingroup rpspline
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* \struct RpSpline
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* Spline object. This should be considered an opaque type.
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* Use the RpSpline API functions to access.
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*/
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struct RpSpline
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{
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RwObject tType; /**< Internal Use */
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RwInt32 numCtrlPoints; /**< Internal Use */
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RwInt32 nSplineType; /**< Internal Use */
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void *pUser; /**< Internal Use */
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RwV3d *ctrlPoints; /**< Internal Use */
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RwChar caName[rpSPLINENAMELENGTH]; /**< Internal Use */
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/* Keep this at tail */
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RwV3d vPts[1]; /**< Internal Use */
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};
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/* Spline types */
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#define rpSPLINETYPEOPENLOOPBSPLINE (1) /* Bezier spline, open loop */
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#define rpSPLINETYPECLOSEDLOOPBSPLINE (2) /* Bezier spline, closed loop */
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/* Spline path types */
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#define rpSPLINEPATHSMOOTH (10) /* Normal */
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#define rpSPLINEPATHNICEENDS (11) /* Slows down the path at the ends */
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/****************************************************************************
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Function prototypes
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*/
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/* Opening the spline plugin */
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extern RwBool RpSplinePluginAttach(void);
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/* Creating and destroying splines */
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extern RpSpline *RpSplineCreate(RwInt32 numCtrlPoints, RwInt32 type, RwV3d *ctrlPoints);
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extern RwBool RpSplineDestroy(RpSpline *spline);
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/* Finding a point and its tangent vector on the spline */
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extern RwV3d *RpSplineFindPosition(RpSpline *spline, RwInt32 path, RwReal where, RwV3d *pos, RwV3d *tangent);
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/* Finding a frame on the spline */
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extern RwReal RpSplineFindMatrix(RpSpline *spline, RwInt32 path, RwReal where, RwV3d *up, RwMatrix *matrix);
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/* LEGACY-SUPPORT MACRO */
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#define RpSplineFindFrame RpSplineFindMatrix
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/* Getting and setting the control points */
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extern RwInt32 RpSplineGetNumControlPoints(const RpSpline *spline);
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extern RwV3d *RpSplineGetControlPoint(RpSpline *spline, RwInt32 control, RwV3d *point);
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extern RpSpline *RpSplineSetControlPoint(RpSpline *spline, RwInt32 control, RwV3d * point);
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/* Copy a spline */
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extern RpSpline *RpSplineClone(RpSpline *spline);
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/* Spline reading and writing helper functions */
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extern RpSpline *RpSplineRead(RwChar *name);
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extern RwBool RpSplineWrite(RpSpline *spline, RwChar *name);
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/* Binary format */
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extern RwUInt32 RpSplineStreamGetSize(const RpSpline *spline);
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extern RpSpline *RpSplineStreamRead(RwStream *stream);
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extern const RpSpline *RpSplineStreamWrite(const RpSpline *spline, RwStream *stream);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* RPSPLINE_H */
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