X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=hacks%2Fspiral.c;fp=hacks%2Fspiral.c;h=0000000000000000000000000000000000000000;hb=41fae2ad67bc37e31c4d967bae81e4f3f50fa55a;hp=10d319a647fc29ac0f2df11f91e1b71c26641a12;hpb=278c59e14c53fd412b734e699bd4f314f766f804;p=xscreensaver

diff --git a/hacks/spiral.c b/hacks/spiral.c
deleted file mode 100644
index 10d319a6..00000000
--- a/hacks/spiral.c
+++ /dev/null
@@ -1,300 +0,0 @@
-/* -*- Mode: C; tab-width: 4 -*-
- * spiral --- low cpu screen design.
- */
-#if !defined( lint ) && !defined( SABER )
-static const char sccsid[] = "@(#)spiral.c	4.00 97/01/01 xlockmore";
-#endif
-
-/* Copyright (c) 1994 Darrick Brown.
- *
- * 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.
- *
- * This file is provided AS IS with no warranties of any kind.  The author
- * shall have no liability with respect to the infringement of copyrights,
- * trade secrets or any patents by this file or any part thereof.  In no
- * event will the author be liable for any lost revenue or profits or
- * other special, indirect and consequential damages.
- *
- * Idea based on a graphics demo I saw a *LONG* time ago.
- *
- * See xlock.c for copying information.
- *
- * Revision History:
- * 10-May-97: jwz@jwz.org: turned into a standalone program.
- * 24-Jul-95: Fix to allow cycles not to have an arbitrary value by
- *            Peter Schmitzberger (schmitz@coma.sbg.ac.at).
- * 06-Mar-95: Finished cleaning up and final testing.
- * Copyright (c) 1994 by Darrick Brown.
- *
- * 03-Mar-95: Cleaned up code.
- * 12-Jul-94: Written.
- */
-
-#ifdef STANDALONE
-# define PROGCLASS					"Spiral"
-# define HACK_INIT					init_spiral
-# define HACK_DRAW					draw_spiral
-# define spiral_opts				xlockmore_opts
-# define DEFAULTS	"*count:		40    \n"			\
-					"*cycles:		350   \n"			\
-					"*delay:		50000 \n"			\
-					"*ncolors:		64   \n"
-# define SMOOTH_COLORS
-# include "xlockmore.h"				/* from the xscreensaver distribution */
-#else  /* !STANDALONE */
-# include "xlock.h"					/* from the xlockmore distribution */
-#endif /* !STANDALONE */
-
-ModeSpecOpt spiral_opts = {
-  0, NULL, 0, NULL, NULL };
-
-#define MAXTRAIL 512		/* The length of the trail */
-#define MAXDOTS 40
-#define MINDOTS 1
-#define TWOPI (2.0*M_PI)	/* for convienence */
-#define JAGGINESS 4		/* This sets the "Craziness" of the spiral (I like 4) */
-#define SPEED 2.0
-
-/* How many segments to draw per cycle when redrawing */
-#define REDRAWSTEP 3
-
-typedef struct {
-	float       hx, hy, ha, hr;
-} Traildots;
-
-typedef struct {
-	Traildots  *traildots;
-	float       cx, cy;
-	float       angle;
-	float       radius;
-	float       dr, da;
-	float       dx, dy;
-	int         erase;
-	int         inc;
-	float       colors;
-	int         width, height;
-	float       top, bottom, left, right;
-	int         dots, nlength;
-	int         redrawing, redrawpos;
-} spiralstruct;
-
-static spiralstruct *spirals = NULL;
-
-static void draw_dots(ModeInfo * mi, int in);
-
-#define TFX(sp,x) ((int)((x/sp->right)*(float)sp->width))
-#define TFY(sp,y) ((int)((y/sp->top)*(float)sp->height))
-
-static void
-draw_dots(ModeInfo * mi, int in)
-{
-
-	float       i, inc;
-	float       x, y;
-
-	spiralstruct *sp = &spirals[MI_SCREEN(mi)];
-
-	inc = TWOPI / (float) sp->dots;
-	for (i = 0.0; i < TWOPI; i += inc) {
-		x = sp->traildots[in].hx + COSF(i + sp->traildots[in].ha) *
-			sp->traildots[in].hr;
-		y = sp->traildots[in].hy + SINF(i + sp->traildots[in].ha) *
-			sp->traildots[in].hr;
-		XDrawPoint(MI_DISPLAY(mi), MI_WINDOW(mi), MI_GC(mi),
-			   TFX(sp, x), TFY(sp, y));
-	}
-}
-
-void
-init_spiral(ModeInfo * mi)
-{
-	spiralstruct *sp;
-	int         i;
-
-	if (spirals == NULL) {
-		if ((spirals = (spiralstruct *) calloc(MI_NUM_SCREENS(mi),
-					     sizeof (spiralstruct))) == NULL)
-			return;
-	}
-	sp = &spirals[MI_SCREEN(mi)];
-
-	sp->width = MI_WIN_WIDTH(mi);
-	sp->height = MI_WIN_HEIGHT(mi);
-
-	XClearWindow(MI_DISPLAY(mi), MI_WINDOW(mi));
-
-	/* Init */
-	sp->nlength = MI_CYCLES(mi);
-
-	if (!sp->traildots)
-		sp->traildots = (Traildots *) malloc(sp->nlength * sizeof (Traildots));
-
-	/* initialize the allocated array */
-	for (i = 0; i < sp->nlength; i++) {
-		sp->traildots[i].hx = 0.0;
-		sp->traildots[i].hy = 0.0;
-		sp->traildots[i].ha = 0.0;
-		sp->traildots[i].hr = 0.0;
-	}
-	sp->redrawing = 0;
-
-	/* keep the window parameters proportional */
-	sp->top = 10000.0;
-	sp->bottom = 0;
-	sp->right = (float) (sp->width) / (float) (sp->height) * (10000.0);
-	sp->left = 0;
-
-	/* assign the initial values */
-	sp->cx = (float) (5000.0 - NRAND(2000)) / 10000.0 * sp->right;
-	sp->cy = (float) (5000.0 - NRAND(2000));
-	sp->radius = (float) (NRAND(200) + 200);
-	sp->angle = 0.0;
-	sp->dx = (float) (10 - NRAND(20)) * SPEED;
-	sp->dy = (float) (10 - NRAND(20)) * SPEED;
-	sp->dr = (float) ((NRAND(10) + 4) * (1 - (LRAND() & 1) * 2));
-	sp->da = (float) NRAND(360) / 7200.0 + 0.01;
-	if (MI_NPIXELS(mi) > 2)
-		sp->colors = (float) NRAND(MI_NPIXELS(mi));
-	sp->erase = 0;
-	sp->inc = 0;
-	sp->traildots[sp->inc].hx = sp->cx;
-	sp->traildots[sp->inc].hy = sp->cy;
-	sp->traildots[sp->inc].ha = sp->angle;
-	sp->traildots[sp->inc].hr = sp->radius;
-	sp->inc++;
-
-	sp->dots = MI_BATCHCOUNT(mi);
-	if (sp->dots < -MINDOTS)
-		sp->dots = NRAND(sp->dots - MINDOTS + 1) + MINDOTS;
-	/* Absolute minimum */
-	if (sp->dots < MINDOTS)
-		sp->dots = MINDOTS;
-}
-
-void
-draw_spiral(ModeInfo * mi)
-{
-	Display    *display = MI_DISPLAY(mi);
-	GC          gc = MI_GC(mi);
-	spiralstruct *sp = &spirals[MI_SCREEN(mi)];
-	int         i, j;
-
-	if (sp->erase == 1) {
-		XSetForeground(display, gc, MI_WIN_BLACK_PIXEL(mi));
-		draw_dots(mi, sp->inc);
-	}
-	sp->cx += sp->dx;
-	sp->traildots[sp->inc].hx = sp->cx;
-
-	if ((sp->cx > 9000.0) || (sp->cx < 1000.0))
-		sp->dx *= -1.0;
-
-	sp->cy += sp->dy;
-	sp->traildots[sp->inc].hy = sp->cy;
-
-	if ((sp->cy > 9000.0) || (sp->cy < 1000.0))
-		sp->dy *= -1.0;
-
-	sp->radius += sp->dr;
-	sp->traildots[sp->inc].hr = sp->radius;
-
-	if ((sp->radius > 2500.0) && (sp->dr > 0.0))
-		sp->dr *= -1.0;
-	else if ((sp->radius < 50.0) && (sp->radius < 0.0))
-		sp->dr *= -1.0;
-
-	/* Randomly give some variations to:  */
-
-	/* spiral direction (if it is within the boundaries) */
-	if ((NRAND(3000) < 1 * JAGGINESS) &&
-	    (((sp->cx > 2000.0) && (sp->cx < 8000.0)) &&
-	     ((sp->cy > 2000.0) && (sp->cy < 8000.0)))) {
-		sp->dx = (float) (10 - NRAND(20)) * SPEED;
-		sp->dy = (float) (10 - NRAND(20)) * SPEED;
-	}
-	/* The speed of the change in size of the spiral */
-	if (NRAND(3000) < 1 * JAGGINESS) {
-		if (LRAND() & 1)
-			sp->dr += (float) (NRAND(3) + 1);
-		else
-			sp->dr -= (float) (NRAND(3) + 1);
-
-		/* don't let it get too wild */
-		if (sp->dr > 18.0)
-			sp->dr = 18.0;
-		else if (sp->dr < 4.0)
-			sp->dr = 4.0;
-	}
-	/* The speed of rotation */
-	if (NRAND(3000) < 1 * JAGGINESS)
-		sp->da = (float) NRAND(360) / 7200.0 + 0.01;
-
-	/* Reverse rotation */
-	if (NRAND(3000) < 1 * JAGGINESS)
-		sp->da *= -1.0;
-
-	sp->angle += sp->da;
-	sp->traildots[sp->inc].ha = sp->angle;
-
-	if (sp->angle > TWOPI)
-		sp->angle -= TWOPI;
-	else if (sp->angle < 0.0)
-		sp->angle += TWOPI;
-
-	sp->colors += (float) MI_NPIXELS(mi) / ((float) (2 * sp->nlength));
-	if (sp->colors >= (float) MI_NPIXELS(mi))
-		sp->colors = 0.0;
-
-	if (MI_NPIXELS(mi) > 2)
-		XSetForeground(display, gc, MI_PIXEL(mi, (int) sp->colors));
-	else
-		XSetForeground(display, gc, MI_WIN_WHITE_PIXEL(mi));
-	draw_dots(mi, sp->inc);
-	sp->inc++;
-
-	if (sp->inc > sp->nlength - 1) {
-		sp->inc -= sp->nlength;
-		sp->erase = 1;
-	}
-	if (sp->redrawing) {
-		for (i = 0; i < REDRAWSTEP; i++) {
-			j = (sp->inc - sp->redrawpos + sp->nlength) % sp->nlength;
-			draw_dots(mi, j);
-
-			if (++(sp->redrawpos) >= sp->nlength) {
-				sp->redrawing = 0;
-				break;
-			}
-		}
-	}
-}
-
-void
-release_spiral(ModeInfo * mi)
-{
-	if (spirals != NULL) {
-		int         screen;
-
-		for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
-			spiralstruct *sp = &spirals[screen];
-
-			if (sp->traildots)
-				(void) free((void *) sp->traildots);
-		}
-		(void) free((void *) spirals);
-		spirals = NULL;
-	}
-}
-
-void
-refresh_spiral(ModeInfo * mi)
-{
-	spiralstruct *sp = &spirals[MI_SCREEN(mi)];
-
-	sp->redrawing = 1;
-	sp->redrawpos = 0;
-}