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#ifndef __Vlib
#define __Vlib
#include <Vlibmath.h>
#define HAS_FRAME_BUFFER
#define VmaxVP 2048 /* max # of vertices in a polygon */
#define MAXCOLORS 8 /* max number of colors available */
/* when double buffering */
#if (MAXCOLORS==4)
#define PLANECOUNT 2
#endif
#if (MAXCOLORS==8)
#define PLANECOUNT 3
#endif
#if (MAXCOLORS==16)
#define PLANECOUNT 4
#endif
#define NUM_ASPECTS 10
#ifdef WIN32
#include <stdlib.h>
#define SYSV
#else /* ! WIN32 */
#include <X11/Xlib.h>
#ifdef HAVE_X11_DBE
#include <X11/extensions/Xdbe.h>
#endif
#endif
#include <Alib.h>
#include <stdio.h>
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if !defined(__GNUC__)
#include <memory.h>
#endif
#ifdef WIN32
extern int DisplayWidth();
extern int DisplayHeight();
extern int DisplayPlanes();
extern Pixmap XCreatePixmap(
Display* /* display */,
Drawable /* d */,
unsigned int /* width */,
unsigned int /* height */,
unsigned int /* depth */
);
extern XFreePixmap(
Display* /* display */,
Pixmap /* pixmap */
);
extern XFlush(
Display* /* display */
);
extern XCopyArea(
Display* /* display */,
Drawable /* src */,
Drawable /* dest */,
GC /* gc */,
int /* src_x */,
int /* src_y */,
unsigned int /* width */,
unsigned int /* height */,
int /* dest_x */,
int /* dest_y */
);
extern XSetForeground(
Display* /* display */,
GC /* gc */,
unsigned long /* foreground */
);
extern XFillRectangle(
Display* /* display */,
Drawable /* d */,
GC /* gc */,
int /* x */,
int /* y */,
unsigned int /* width */,
unsigned int /* height */
);
extern Status XAllocColorCells(
Display* /* display */,
Colormap /* colormap */,
Bool /* contig */,
unsigned long* /* plane_masks_return */,
unsigned int /* nplanes */,
unsigned long* /* pixels_return */,
unsigned int /* npixels */
);
extern XStoreColors(
Display* /* display */,
Colormap /* colormap */,
XColor* /* color */,
int /* ncolors */
);
extern XSetPlaneMask(
Display* /* display */,
GC /* gc */,
unsigned long /* plane_mask */
);
#endif
typedef struct _Viewport {
AWindow *w;
unsigned long depth; /* polygon depth while plotting */
unsigned long flags; /* viewport flags */
VMatrix eyeSpace; /* transforms from world to eyeSpace system */
VPolygon *clipPoly; /* planes to clip viewed polygons */
VPoint clipNormals[4]; /* normal vectors corresponding to clipPoly */
double units; /* world units expressed in meters */
double dist; /* distance in units from eye to screen */
double xres; /* x screen resolution in dots per unit */
double yres; /* y screen resolution in dots per unit */
int width; /* width of window in dots */
int height; /* height of window in dots */
Point Middl; /* center of the window */
VPoint Scale; /* scaling factor */
Display *dpy; /* Display associated with this viewport */
int screen; /* X screen number */
Window win;
Pixmap monoPixmap; /* Pixmap used to buffer drawing */
#ifdef HAVE_X11_DBE
XdbeBackBuffer dbeDrawable;
GC gc;
#endif
Pixmap halftone[8]; /* Pixmaps used for dithering images */
int colors; /* color count */
int set; /* id of buffer currently in use */
unsigned long mask; /* current plane mask */
unsigned long aMask, bMask;
Color *pixel; /* current pixel drawing values */
Color *aPixel;
Color bPixel[MAXCOLORS];
XColor xdepthCueColor;
XColor aColor[MAXCOLORS * MAXCOLORS];
XColor bColor[MAXCOLORS * MAXCOLORS];
Colormap cmap;
Visual *visual;
ZInfo *zpool;
long zsize;
long ztop;
void (*colorTweakProc) ();
Status (*AllocColor)(struct _Viewport *v,
Colormap colormap,
XColor *c);
void (*DrawLine)(struct _Viewport *v,
int x1,
int y1,
int x2,
int y2,
Color color);
void (*DrawSegments)(struct _Viewport * v,
Segment * seg,
int nseg,
Color color);
void (*FillPolygon)(struct _Viewport * v,
Window win,
GC gc,
VPolygon * poly);
void (*FillRectangle)(struct _Viewport *v,
int x,
int y,
int w,
int h,
Color color);
void (*ExposeBuffer)(struct _Viewport * v, GC gc);
void (*SetClipRect)(struct _Viewport *v,
int x1, int y1,
int x2, int y2);
void (*Close)(struct _Viewport *v);
unsigned long lastPixel;
} Viewport;
typedef struct {
int flags; /* flag word */
VColor *VColorList;
int usePixmaps;
int nextPixel; /* next pixel cell to allocate */
int depthCueSteps; /* 0 = no haze */
VColor *depthCueColor; /* haze color */
double visibility; /* visibility (in feet) */
double *visTable;
} VWorkContext;
#define WCLocked 1 /* colors have been bound */
#define VGetPolygonPixel(p) (p->color->xcolor.pixel)
#define VLookupViewportColor(v,n) (v->pixel[n])
#define VGetViewportMask(v) (v->mask)
#define VSetDepthCue(color,s) { _VDefaultWorkContext->depthCueColor=(color); \
_VDefaultWorkContext->depthCueSteps=(s); }
/*
* Are we C++?
*/
#if defined(__cplusplus)
extern "C" {
#endif
/*
* Globals
*/
extern VWorkContext _v_default_work_context;
extern VWorkContext *_VDefaultWorkContext;
extern VPoint _VUnitVectorI, _VUnitVectorJ, _VUnitVectorK;
#ifndef PARAMS
#if !defined(__STDC__) && !defined(__cplusplus) && !defined(WIN32)
#define PARAMS(arglist) ()
#else
#define PARAMS(arglist) arglist
#endif
#endif
/*
* V macros and function prototypes
*/
#define VDestroyPoints(a) free((char *) a)
#define VDestroyPolygon(a) {free((char *) a->vertex); free((char *) a);}
extern Viewport *VOpenViewport PARAMS((Display *, int, Window, Colormap,
Visual *, double, double, double, int, int));
extern void VResizeViewport PARAMS((Viewport *, double, double,
double, int, int));
extern void VCloseViewport(Viewport * v); /* (Viewport *) */
extern VPolygon *VClipPolygon PARAMS((VPolygon *, VPolygon *));
extern VPolygon *VClipSidedPolygon PARAMS((Viewport *,
VPolygon *,
VPolygon *));
extern VPoint *VCreatePoints(int numPts); /* (int) */
extern VColor *VAllocColor PARAMS((char *));
extern VColor *VAllocDepthCueuedColor PARAMS((char *, int flag));
extern int VBindColors PARAMS((Viewport *, char *));
extern void VExposeBuffer PARAMS((Viewport *, GC));
extern VObject *VReadObject PARAMS((FILE * f));
extern VObject *VReadDepthCueuedObject PARAMS((FILE * f, int flag));
extern int VWriteObject PARAMS((FILE *, VObject *));
extern void VSetReadObjectScale PARAMS((VPoint *));
extern void VComputeObjectExtent PARAMS((VObject *));
extern int VEyeToScreen(Viewport * v, VPoint * p, int *x, int *y);
extern int VWorldToScreen(Viewport * v, VPoint * p, int *x, int *y);
extern int VFontWidthPixels(Viewport * v, int scale);
extern void VDrawStrokeString(Viewport * v, int x, int y,
unsigned char *str, int len, int scale, ZInfo * z);
extern void VGetStrokeString(Viewport * v, int x, int y,
Segment * seg, int *nseg,
unsigned char *str, int len, int scale);
extern void VDrawArc(Viewport * v, int x, int y,
int width, int height,
int angle1, int angle2, Color color);
extern void VDrawSegments(Viewport * v, Segment * seg,
int nseg, Color color);
extern void VFillPolygon(Viewport * v, Window win, GC gc, VPolygon * poly);
extern void VFillRectangle(Viewport *v, int x, int y, int w, int h,
Color c);
extern void VGetEyeSpace(Viewport * v, VPoint EyePt,
VPoint CntrInt, VPoint up);
extern VPolygon *VGetPlanes(VPolygon * poly);
extern void VSetVisibility PARAMS((double d));
extern int VComputePolygonColor PARAMS((Viewport * v, VPolygon * poly));
extern int ViewportSetDepthCueing PARAMS((Viewport * v, int flag));
extern VObject * VReadDXFObject(FILE *f);
extern VObject * VReadDepthCueuedDXFObject(FILE *f, int flag);
extern void releaseVResources (void);
extern void VSetClipRect(Viewport *v, int x1, int y1, int x2, int y2);
extern void VdbeDrawLine(Viewport *v, int x1, int y1, int x2, int y2,
Color color);
extern void VdbeFillPolygon(Viewport * v,
Window win, GC gc, VPolygon * poly);
extern void VdbeFillRectangle(Viewport *v,
int x, int y, int width, int h, Color c);
extern void VdbeDrawSegments(Viewport * v,
Segment * seg, int nseg, Color color);
extern void VdbeSetClipRect(Viewport *v, int x1, int y1,
int x2, int y2);
extern void VdbeExposeBuffer(Viewport * v, GC gc);
extern void VdbeClose(Viewport *v);
extern Status VdbeAllocColor(Viewport *v,
Colormap colormap, XColor *c);
extern void AlibDrawLine(Viewport *v, int x1, int y1,
int x2, int y2,
Color color);
extern void AlibFillPolygon(Viewport * v,
Window win, GC gc, VPolygon * poly);
extern void AlibFillRectangle(Viewport *v,
int x, int y, int width, int h, Color c);
extern void AlibDrawSegments(Viewport * v,
Segment * seg, int nseg, Color color);
extern void AlibSetClipRect(Viewport *v, int x1, int y1,
int x2, int y2);
extern void AlibExposeBuffer(Viewport * v, GC gc);
extern void AlibClose(Viewport *v);
extern Status AlibAllocColor(Viewport *v, Colormap colormap, XColor *c);
#if (defined(_AIX) && defined(_IBMR2)) && !(defined(__GNUC__) \
&& (__GNUC__ == 2 ))
/* For some reason, the RS/6000 AIX header files don't declare strdup. */
extern char *strdup(const char *);
#endif
#if defined(__cplusplus)
};
#endif
#endif
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