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IABSD.fr/xenocara/app/x11perf/do_segs.c
matthieu
- app/x11perf/do_segs.c
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/***************************************************************************** Copyright 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************************/ #include "x11perf.h" static XSegment *segments; static GC pgc; static void GenerateSegments(XParms xp, Parms p, Bool ddashed) { int size; int half; int i; int rows; /* Number of rows filled in current column */ int x, y; /* base of square to draw in */ int x1=0, y1=0, x2=0, y2=0; /* offsets into square */ int phase; /* how far into 0..8*size we are */ int phaseinc; /* how much to increment phase at each segment */ int size8; /* 8 * size */ XGCValues gcv; if(ddashed) pgc = xp->ddfggc; else pgc = xp->fggc; size = p->special; size8 = 8 * size; half = (size + 19) / 20; segments = (XSegment *)malloc((p->objects) * sizeof(XSegment)); /* All this x, x1, etc. stuff is to create a pattern that (1) scans down the screen vertically, with each new segment going into a square of size^2. (2) rotates the endpoints clockwise around the square (3) rotates by ``large'' steps if we aren't going to paint enough segments to get full coverage (4) uses CapNotLast so we can create segments of length 1 that nonetheless have a distinct direction */ x = half; y = half; phase = 0; phaseinc = size8 / p->objects; if (phaseinc == 0) phaseinc = 1; rows = 0; for (i = 0; i != p->objects; i++) { switch (phase / size) { case 0: x1 = 0; y1 = 0; x2 = size; y2 = phase; break; case 1: x1 = phase % size; y1 = 0; x2 = size; y2 = size; break; case 2: x1 = size; y1 = 0; x2 = size - phase % size; y2 = size; break; case 3: x1 = size; y1 = phase % size; x2 = 0; y2 = size; break; case 4: x1 = size; y1 = size; x2 = 0; y2 = size - phase % size; break; case 5: x1 = size - phase % size; y1 = size; x2 = 0; y2 = 0; break; case 6: x1 = 0; y1 = size; x2 = phase % size; y2 = 0; break; case 7: x1 = 0; y1 = size - phase % size; x2 = size; y2 = 0; break; } /* end switch */ segments[i].x1 = x + x1; segments[i].y1 = y + y1; segments[i].x2 = x + x2; segments[i].y2 = y + y2; /* Change square to draw segment in */ rows++; y += size; if (y >= HEIGHT - size - half || rows == MAXROWS) { /* Go to next column */ rows = 0; y = half; x += size; if (x >= WIDTH - size - half) { x = half; } } /* Increment phase */ phase += phaseinc; if (phase >= size8) phase -= size8; } gcv.cap_style = CapNotLast; if(ddashed) { XChangeGC(xp->d, xp->ddfggc, GCCapStyle, &gcv); XChangeGC(xp->d, xp->ddbggc, GCCapStyle, &gcv); } else { XChangeGC(xp->d, xp->fggc, GCCapStyle, &gcv); XChangeGC(xp->d, xp->bggc, GCCapStyle, &gcv); } } int InitSegments(XParms xp, Parms p, int64_t reps) { GenerateSegments(xp, p, False); return reps; } int InitDashedSegments(XParms xp, Parms p, int64_t reps) { char dashes[2]; GenerateSegments(xp, p, False); /* Modify GCs to draw dashed */ XSetLineAttributes (xp->d, xp->bggc, 0, LineOnOffDash, CapNotLast, JoinMiter); XSetLineAttributes (xp->d, xp->fggc, 0, LineOnOffDash, CapNotLast, JoinMiter); dashes[0] = 3; dashes[1] = 2; XSetDashes(xp->d, xp->fggc, 0, dashes, 2); XSetDashes(xp->d, xp->bggc, 0, dashes, 2); return reps; } int InitDoubleDashedSegments(XParms xp, Parms p, int64_t reps) { char dashes[2]; GenerateSegments(xp, p, True); /* Modify GCs to draw dashed */ XSetLineAttributes (xp->d, xp->ddbggc, 0, LineDoubleDash, CapNotLast, JoinMiter); XSetLineAttributes (xp->d, xp->ddfggc, 0, LineDoubleDash, CapNotLast, JoinMiter); dashes[0] = 3; dashes[1] = 2; XSetDashes(xp->d, xp->ddfggc, 0, dashes, 2); XSetDashes(xp->d, xp->ddbggc, 0, dashes, 2); return reps; } int InitHorizSegments(XParms xp, Parms p, int64_t reps) { int size; int half; int i; int rows; /* Number of rows filled in current column */ int x, y; /* base of square to draw in */ int y1; /* y position inside square */ int inc; XGCValues gcv; pgc = xp->fggc; size = p->special; half = (size + 19) / 20; segments = (XSegment *)malloc((p->objects) * sizeof(XSegment)); x = half; y = half; y1 = 0; rows = 0; inc = size / p->objects; if (inc == 0) inc = 1; for (i = 0; i != p->objects; i++) { if (i % 2) { segments[i].x1 = x + size; segments[i].x2 = x; segments[i].y1 = y + size - y1; segments[i].y2 = y + size - y1; y1 += inc; if (y1 >= size) y1 -= size; } else { segments[i].x1 = x; segments[i].x2 = x + size; segments[i].y1 = y + y1; segments[i].y2 = y + y1; } rows++; y += size; if (y >= HEIGHT - size - half || rows == MAXROWS) { rows = 0; y = half; x += size; if (x >= WIDTH - size - half) x = half; } } gcv.cap_style = CapNotLast; XChangeGC(xp->d, xp->fggc, GCCapStyle, &gcv); XChangeGC(xp->d, xp->bggc, GCCapStyle, &gcv); return reps; } int InitWideHorizSegments(XParms xp, Parms p, int64_t reps) { int size; (void)InitHorizSegments(xp, p, reps); size = p->special; XSetLineAttributes(xp->d, xp->bggc, (int) ((size + 9) / 10), LineSolid, CapRound, JoinRound); XSetLineAttributes(xp->d, xp->fggc, (int) ((size + 9) / 10), LineSolid, CapRound, JoinRound); return reps; } int InitVertSegments(XParms xp, Parms p, int64_t reps) { int size; int half; int i; int rows; /* Number of rows filled in current column */ int x, y; /* base of square to draw in */ int x1; /* x position inside square */ int inc; XGCValues gcv; pgc = xp->fggc; size = p->special; half = (size + 19) / 20; segments = (XSegment *)malloc((p->objects) * sizeof(XSegment)); x = half; y = half; x1 = 0; rows = 0; inc = size / p->objects; if (inc == 0) inc = 1; for (i = 0; i != p->objects; i++) { if (i % 2) { segments[i].x1 = x + size - x1; segments[i].x2 = x + size - x1; segments[i].y1 = y + size; segments[i].y2 = y; x1 += inc; if (x1 >= size) x1 -= size; } else { segments[i].x1 = x + x1; segments[i].x2 = x + x1; segments[i].y1 = y; segments[i].y2 = y + size; } rows++; y += size; if (y >= HEIGHT - size - half || rows == MAXROWS) { /* Go to next column */ rows = 0; y = half; x += size; if (x >= WIDTH - size - half) { x = half; } } } gcv.cap_style = CapNotLast; XChangeGC(xp->d, xp->fggc, GCCapStyle, &gcv); XChangeGC(xp->d, xp->bggc, GCCapStyle, &gcv); return reps; } int InitWideVertSegments(XParms xp, Parms p, int64_t reps) { int size; (void)InitVertSegments(xp, p, reps); size = p->special; XSetLineAttributes(xp->d, xp->bggc, (int) ((size + 9) / 10), LineSolid, CapRound, JoinRound); XSetLineAttributes(xp->d, xp->fggc, (int) ((size + 9) / 10), LineSolid, CapRound, JoinRound); return reps; } void DoSegments(XParms xp, Parms p, int64_t reps) { int i; for (i = 0; i != reps; i++) { XDrawSegments(xp->d, xp->w, pgc, segments, p->objects); if (pgc == xp->ddbggc) pgc = xp->ddfggc; else if(pgc == xp->ddfggc) pgc = xp->ddbggc; else if (pgc == xp->bggc) pgc = xp->fggc; else pgc = xp->bggc; CheckAbort (); } } void EndSegments(XParms xp, Parms p) { free(segments); }