/usr/include/geomview/private/mgP.h is in libgeomview-dev 1.9.4-4.1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
*
* This file is part of Geomview.
*
* Geomview is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Geomview is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Geomview; see the file COPYING. If not, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA, or visit http://www.gnu.org.
*/
/* Authors: Charlie Gunn, Stuart Levy, Tamara Munzner, Mark Phillips */
#ifndef _MG_PDEFS_
#define _MG_PDEFS_
/*
* Private, but machine-independent, declarations for mg library.
*/
#include <stdlib.h>
#include "mg.h"
#define MGCONTEXTMAGIC OOGLMagic('m', 'c'<<8 | 1)
/* struct mgcontext changed bits */
#define MC_WIN 0x01 /* window changed (reshaped, &c) */
#define MC_CAM 0x02 /* Camera changed */
#define MC_AP 0x04 /* Appearance changed */
#define MC_MAT 0x08 /* Material changed */
#define MC_LIGHT 0x10 /* Lighting changed */
#define MC_TRANS 0x20 /* Transformation changed */
#define MC_OPT 0x40 /* Options changed */
#define MC_USED 0x80 /* worldbegin called (used by mg_textureclock) */
/* flags for mgastk->flags */
#define MGASTK_TAGGED 0x01 /* sticky */
#define MGASTK_ACTIVE 0x02 /* in use */
#define MGASTK_SHADER 0x04 /* software shader */
/*
* Appearance portion of state.
* We have a global stack of these which represent the user-specified values,
* with a stack push at every mgpushappearance().
*/
struct mgastk {
REFERENCEFIELDS; /* use count for sticky elements */
struct mgastk *next; /* stack link */
mgcontext *tag_ctx;/* back-pointer for ap_tagged list */
unsigned short flags; /* sticky flag */
unsigned short changed;
short ap_seq, mat_seq, light_seq;
Appearance ap; /* Shallow copy of appearance -- don't delete */
Material mat; /* Ditto, Material */
LmLighting lighting;/* Ditto, Lighting */
mgshadefunc shader; /* Software shading function, or NULL if none */
void *shaderdata; /* Data which shader might use */
};
/*
* Transform stack, pushed by mgpushtransform().
*/
struct mgxstk {
struct mgxstk *next; /* stack link */
Transform T; /* Current object->world xform */
short xfm_seq;
short hasinv; /* Flag: Tinv is valid */
Transform Tinv;
};
/*
* Texture transform stack. Needed to paste textured stuff together
* with INSTs, but allowing for a texture which covers the entire
* object. cH, 2007.
*/
struct mgtxstk
{
struct mgtxstk *next; /* stack link */
Transform T;
/* No need for an inverse. Sequence count? Probably not. */
};
struct mgcontext {
REFERENCEFIELDS;
struct mgfuncs *devfuncs; /* Pointers to devices */
short devno; /* Device index -- MGD_GL, MGD_X11, ... */
unsigned short changed; /* flags: Must update device state because...*/
WnWindow *win; /* Window */
Camera *cam; /* Camera */
mgcontext *parent; /* Parent mg window, if any */
mgcontext *next; /* Link in list of all mg contexts */
struct mgxstk *xstk; /* Top of transform stack */
struct mgtxstk *txstk; /* Top of texture transform stack */
struct mgastk *astk; /* Top of appearance stack */
struct mgastk *ap_tagged;/* Tagged (persistent) appearances */
short ap_min_tag, ap_max_tag; /* excluded seq. regions */
short mat_min_tag, mat_max_tag;
short light_min_tag, light_max_tag;
int shown; /* Is window 'visible'? */
ColorA background; /* Background color */
Image *bgimage;
int opts; /* MG_SETOPTIONS flag mask */
Transform W2C; /* World->camera transform */
Transform C2W; /* Camera->world transform */
float zfnudge; /* fraction of Z-range by which lines are
* nudged closer than surfaces.
*/
int space; /* space in which objects being drawn
* live; should be TM_EUCLIDEAN,
* TM_HYPERBOLIC, or TM_SPHERICAL
*/
Transform W2S, S2W; /* world-to-screen, screen-to-world xfms */
int has; /* Flag bits, set when cached values valid */
#define HAS_CPOS 0x1 /* Camera position (cpos, camZ) */
#define HAS_S2O 0x2 /* S2O, O2S */
#define HAS_POINT 0x4 /* Outline for generic fat point */
/* Cached values, computed when needed: */
HPoint3 cpos; /* Location of camera in object coordinates */
Point3 camZ; /* Direction of camera +Z vector */
Transform O2S, S2O; /* object-to-screen, screen-to-object xfms */
vvec point; /* outline for fat points */
mgNDctx *NDctx;/* pointer to caller-defined ND closure */
mgwinchfunc winchange; /* Callback function for mg Window etc. changes */
void *winchangeinfo; /* We call (*winchange)(ctx, winchangeinfo, win, changemask) */
};
#define next_ap_seq(ctx, astk) \
((((astk)->ap_seq + 1) >= (ctx)->ap_min_tag && \
((astk)->ap_seq + 1) <= (ctx)->ap_max_tag) \
? (ctx)->ap_max_tag+1 : (astk)->ap_seq + 1)
#define next_mat_seq(ctx, astk) \
((((astk)->mat_seq + 1) >= (ctx)->mat_min_tag && \
((astk)->mat_seq + 1) <= (ctx)->mat_max_tag) \
? (ctx)->mat_max_tag+1 : (astk)->mat_seq + 1)
#define next_light_seq(ctx, astk) \
((((astk)->light_seq + 1) >= (ctx)->light_min_tag && \
((astk)->light_seq + 1) <= (ctx)->light_max_tag) \
? (ctx)->light_max_tag+1 : (astk)->light_seq + 1)
/*
* Pointer to the current mg context.
*/
extern mgcontext *_mgc;
/*
* List of all extant mg contexts.
*/
extern mgcontext *_mgclist;
/*
* Declarations of common mg routines, accessible to other mg packages
* (but not intended to be public):
*/
/* geometry transform */
extern void mg_identity(void);
extern void mg_transform(Transform T);
extern void mg_settransform(Transform T);
extern void mg_gettransform(Transform T);
extern int mg_pushtransform(void);
extern int mg_poptransform(void);
/* texture transform */
extern void mg_txidentity(void);
extern void mg_txtransform(Transform T);
extern void mg_settxtransform(Transform T);
extern void mg_gettxtransform(Transform T);
extern int mg_pushtxtransform(void);
extern int mg_poptxtransform(void);
extern void mg_quads(int nquads, HPoint3 *v, Point3 *n, ColorA *c, int qflags);
extern void mg_bezier(int du, int dv, int dimn, float *ctrlpts, TxST *txmapst,
ColorA *c);
extern void mg_bsptree(struct BSPTree *bsptree);
extern void mg_findcam();
extern void mg_findS2O();
extern void mg_findO2S();
extern void mg_makepoint();
extern int mg_pushappearance(void);
extern int mg_popappearance(void);
extern void mg_reshapeviewport(void);
extern const Appearance *mg_getappearance(void);
extern const Appearance *mg_setappearance(const Appearance *ap, int mergeflag);
extern mgcontext *mg_newcontext(struct mgcontext *);
extern int mg_appearancebits( Appearance *ap, int merge, int *valid, int *flag );
extern void mg_ctxdelete( struct mgcontext * );
extern int mg_ctxselect( struct mgcontext * );
extern void mg_findO2S( void );
extern void mg_findS2O( void );
extern void mg_findcam( void );
extern void mg_makepoint( void );
extern void mg_worldbegin( void );
extern int mg_inhaletexture( Texture *tx, int rgba );
extern TxUser *mg_find_shared_texture(Texture *tx, int mgtype);
extern bool mg_same_texture(Texture *tx1, Texture *tx2, bool really);
extern void mg_reassign_shared_textures(mgcontext *ctx, int mgtype);
extern int mg_find_free_shared_texture_id(int mgtype);
extern void mg_remove_txuser(TxUser *tu);
extern const void *mg_tagappearance(void);
extern void mg_untagappearance(const void *tag);
extern void mg_taggedappearance(const void *tag);
#endif /*_MG_PDEFS_*/
/*
* Local Variables: ***
* mode: c ***
* c-basic-offset: 8 ***
* End: ***
*/
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