* on cycle, and the extents of the sinus pattern change in
* real-time.
* [06/22/99] - Shane Smit: Fixed delay to be fast and use little CPU :).
+ * [09/17/99] - Shane Smit: Made all calculations based on the size of the
+ * window. Thus, it'll look the same at 100x100 as it does at
+ * 1600x1200 ( Only smaller :).
+ * [04/24/00] - Shane Smit: Revamped entire source code:
+ * Shade Bob movement is calculated very differently.
+ * Base color can be any color now.
*/
+
#include <math.h>
#include "screenhack.h"
-#include <X11/Xutil.h>
/* #define VERBOSE */
-char *progclass = "ShadeBobs";
-
-char *defaults [] = {
- "*degrees: 512",
+static const char *shadebobs_defaults [] = {
+ ".background: black",
+ ".foreground: white",
+ "*fpsSolid: true",
+ "*degrees: 0", /* default: Automatic degree calculation */
"*color: random",
- "*count: 2",
- "*cycles: 50",
+ "*count: 4",
+ "*cycles: 10",
"*ncolors: 64", /* changing this doesn't work particularly well */
- "*delay: 5000",
+ "*delay: 10000",
+#ifdef USE_IPHONE
+ "*ignoreRotation: True",
+#endif
0
};
-XrmOptionDescRec options [] = {
+static XrmOptionDescRec shadebobs_options [] = {
{ "-degrees", ".degrees", XrmoptionSepArg, 0 },
{ "-color", ".color", XrmoptionSepArg, 0 },
+ { "-ncolors", ".ncolors", XrmoptionSepArg, 0 },
{ "-count", ".count", XrmoptionSepArg, 0 },
{ "-delay", ".delay", XrmoptionSepArg, 0 },
{ "-cycles", ".cycles", XrmoptionSepArg, 0 },
{ 0, 0, 0, 0 }
};
-static unsigned short nDegreeCount;
-static double *anSinTable;
-static unsigned short nMaxExtentX, nMaxExtentY;
-static unsigned short nMinExtentX, nMinExtentY;
-static unsigned short nHalfWidth, nHalfHeight;
-static char *sColor;
-
-#define RANDOM() ((int) (random() & 0X7FFFFFFFL))
-
-
/* Ahem. Chocolate is a flavor; not a food. Thank you */
-#define MAPSIZE 32
-
typedef struct
{
- char anDeltaMap[ MAPSIZE * MAPSIZE ]; /* 32 x 32 Delta Map */
- double nVelocityX, nVelocityY;
- double nAngleX, nAngleY;
- short nExtentX, nExtentY;
+ signed char *anDeltaMap;
+ double nAngle, nAngleDelta, nAngleInc;
+ double nPosX, nPosY;
} SShadeBob;
+struct state {
+ Display *dpy;
+ Window window;
+ unsigned short iDegreeCount;
+ double *anSinTable, *anCosTable;
+ unsigned short iWinWidth, iWinHeight;
+ unsigned short iWinCenterX, iWinCenterY;
+ char *sColor;
+ unsigned char iBobRadius, iBobDiameter;
+ unsigned char iVelocity;
+
+ unsigned long *aiColorVals;
+ signed short iColorCount;
+ int cycles;
+ XImage *pImage;
+ unsigned char nShadeBobCount, iShadeBob;
+ SShadeBob *aShadeBobs;
+ GC gc;
+ int delay;
+ int draw_i;
+};
-static void ResetShadeBob( SShadeBob *pShadeBob )
-{
- pShadeBob->nAngleX = RANDOM() % nDegreeCount;
- pShadeBob->nAngleY = RANDOM() % nDegreeCount;
+#define RANDOM() ((int) (random() & 0X7FFFFFFFL))
- pShadeBob->nExtentX = (RANDOM() % (nMaxExtentX - nMinExtentX)) + nMinExtentX;
- pShadeBob->nExtentY = (RANDOM() % (nMaxExtentY - nMinExtentY)) + nMinExtentY;
-}
-static void InitShadeBob( SShadeBob *pShadeBob, Bool bDark )
+static void ResetShadeBob( struct state *st, SShadeBob *pShadeBob )
{
- double nDelta;
- char iWidth, iHeight;
+ pShadeBob->nPosX = RANDOM() % st->iWinWidth;
+ pShadeBob->nPosY = RANDOM() % st->iWinHeight;
+ pShadeBob->nAngle = RANDOM() % st->iDegreeCount;
+ pShadeBob->nAngleDelta = ( RANDOM() % st->iDegreeCount ) - ( st->iDegreeCount / 2.0F );
+ pShadeBob->nAngleInc = pShadeBob->nAngleDelta / 50.0F;
+ if( pShadeBob->nAngleInc == 0.0F )
+ pShadeBob->nAngleInc = ( pShadeBob->nAngleDelta > 0.0F ) ? 0.0001F : -0.0001F;
+}
- for( iHeight=-16; iHeight<16; iHeight++ )
- for( iWidth=-16; iWidth<16; iWidth++ )
- {
- nDelta = 9 - (sqrt( pow( iWidth+0.5, 2 ) + pow( iHeight+0.5, 2 ) ) / 2 );
- if( nDelta < 0 ) nDelta = 0;
- if( bDark ) nDelta = -nDelta;
- pShadeBob->anDeltaMap[ (iWidth+(MAPSIZE/2))*MAPSIZE
- + iHeight+(MAPSIZE/2) ] = (char)nDelta;
- }
- ResetShadeBob( pShadeBob );
+static void InitShadeBob( struct state *st, SShadeBob *pShadeBob, Bool bDark )
+{
+ double nDelta;
+ int iWidth, iHeight;
+
+ if( ( pShadeBob->anDeltaMap = calloc( st->iBobDiameter * st->iBobDiameter, sizeof(char) ) ) == NULL )
+ {
+ fprintf( stderr, "%s: Could not allocate Delta Map!\n", progname );
+ return;
+ }
+
+ for( iHeight=-st->iBobRadius; iHeight<st->iBobRadius; iHeight++ )
+ for( iWidth=-st->iBobRadius; iWidth<st->iBobRadius; iWidth++ )
+ {
+ nDelta = 9 - ( ( sqrt( pow( iWidth+0.5, 2 ) + pow( iHeight+0.5, 2 ) ) / st->iBobRadius ) * 8 );
+ if( nDelta < 0 ) nDelta = 0;
+ if( bDark ) nDelta = -nDelta;
+ pShadeBob->anDeltaMap[ ( iWidth + st->iBobRadius ) * st->iBobDiameter + iHeight + st->iBobRadius ] = (char)nDelta;
+ }
+
+ ResetShadeBob( st, pShadeBob );
}
-static void Execute( SShadeBob *pShadeBob, Display *pDisplay,
- Window MainWindow,
- GC *pGC, XImage *pXImage,
- int ncolors, XColor *aXColors )
+/* A delta is calculated, and the shadebob turns at an increment. When the delta
+ * falls to 0, a new delta and increment are calculated. */
+static void MoveShadeBob( struct state *st, SShadeBob *pShadeBob )
{
- long nColor;
- short nIndex;
- unsigned int nXPos, nYPos;
- unsigned int iWidth, iHeight;
-
- pShadeBob->nVelocityX += ( ( RANDOM() % 200 ) - 100 ) / 1000.0F;
- pShadeBob->nVelocityY += ( ( RANDOM() % 200 ) - 100 ) / 1000.0F;
-
- if( pShadeBob->nVelocityX > 4 ) pShadeBob->nVelocityX = 4;
- else if( pShadeBob->nVelocityX < 3 ) pShadeBob->nVelocityX = 3;
- if( pShadeBob->nVelocityY > 4 ) pShadeBob->nVelocityY = 4;
- else if( pShadeBob->nVelocityY < 3 ) pShadeBob->nVelocityY = 3;
-
- pShadeBob->nAngleX += pShadeBob->nVelocityX;
- pShadeBob->nAngleY += pShadeBob->nVelocityY;
-
- if( pShadeBob->nAngleX >= nDegreeCount ) pShadeBob->nAngleX -= nDegreeCount;
- else if( pShadeBob->nAngleX < 0 ) pShadeBob->nAngleX += nDegreeCount;
- if( pShadeBob->nAngleY >= nDegreeCount ) pShadeBob->nAngleY -= nDegreeCount;
- else if( pShadeBob->nAngleY < 0 ) pShadeBob->nAngleY += nDegreeCount;
-
- pShadeBob->nExtentX += ( RANDOM() % 5 ) - 2;
- if( pShadeBob->nExtentX > nMaxExtentX ) pShadeBob->nExtentX = nMaxExtentX;
- if( pShadeBob->nExtentX < nMinExtentX ) pShadeBob->nExtentX = nMinExtentX;
- pShadeBob->nExtentY += ( RANDOM() % 5 ) - 2;
- if( pShadeBob->nExtentY > nMaxExtentY ) pShadeBob->nExtentY = nMaxExtentY;
- if( pShadeBob->nExtentY < nMinExtentY ) pShadeBob->nExtentY = nMinExtentY;
-
- /* Trig is your friend :) */
- nXPos = (unsigned int)(( anSinTable[ (int)pShadeBob->nAngleX ] * pShadeBob->nExtentX )
- + nHalfWidth);
- nYPos = (unsigned int)(( anSinTable[ (int)pShadeBob->nAngleY ] * pShadeBob->nExtentY )
- + nHalfHeight);
-
- for( iHeight=0; iHeight < MAPSIZE; iHeight++ )
- {
- for( iWidth=0; iWidth < MAPSIZE; iWidth++ )
- {
- nColor = XGetPixel( pXImage, nXPos + iWidth, nYPos + iHeight );
-
- /* FIXME: Here is a loop I'd love to take out. */
- for( nIndex=0; nIndex < ncolors; nIndex++ )
- if( aXColors[ nIndex ].pixel == nColor )
- break;
+ pShadeBob->nAngle += pShadeBob->nAngleInc;
+ pShadeBob->nAngleDelta -= pShadeBob->nAngleInc;
+
+ if( pShadeBob->nAngle >= st->iDegreeCount ) pShadeBob->nAngle -= st->iDegreeCount;
+ else if( pShadeBob->nAngle < 0 ) pShadeBob->nAngle += st->iDegreeCount;
+
+ if( ( pShadeBob->nAngleInc>0.0F && pShadeBob->nAngleDelta<pShadeBob->nAngleInc ) ||
+ ( pShadeBob->nAngleInc<=0.0F && pShadeBob->nAngleDelta>pShadeBob->nAngleInc ) )
+ {
+ pShadeBob->nAngleDelta = ( RANDOM() % st->iDegreeCount ) - ( st->iDegreeCount / 2.0F );
+ pShadeBob->nAngleInc = pShadeBob->nAngleDelta / 50.0F;
+ if( pShadeBob->nAngleInc == 0.0F )
+ pShadeBob->nAngleInc = ( pShadeBob->nAngleDelta > 0.0F ) ? 0.0001F : -0.0001F;
+ }
+
+ pShadeBob->nPosX = ( st->anSinTable[ (int)pShadeBob->nAngle ] * st->iVelocity ) + pShadeBob->nPosX;
+ pShadeBob->nPosY = ( st->anCosTable[ (int)pShadeBob->nAngle ] * st->iVelocity ) + pShadeBob->nPosY;
+
+ /* This wraps it around the screen. */
+ if( pShadeBob->nPosX >= st->iWinWidth ) pShadeBob->nPosX -= st->iWinWidth;
+ else if( pShadeBob->nPosX < 0 ) pShadeBob->nPosX += st->iWinWidth;
+
+ if( pShadeBob->nPosY >= st->iWinHeight ) pShadeBob->nPosY -= st->iWinHeight;
+ else if( pShadeBob->nPosY < 0 ) pShadeBob->nPosY += st->iWinHeight;
+}
- nIndex += pShadeBob->anDeltaMap[ iWidth * MAPSIZE + iHeight ];
- if( nIndex >= ncolors ) nIndex = ncolors-1;
- if( nIndex < 0 ) nIndex = 0;
- XPutPixel( pXImage, nXPos + iWidth, nYPos + iHeight,
- aXColors[ nIndex ].pixel );
- }
- }
- /* Place graphics in window */
- XPutImage( pDisplay, MainWindow, *pGC, pXImage,
- nXPos, nYPos, nXPos, nYPos, MAPSIZE, MAPSIZE );
- XSync (pDisplay, False);
+static void Execute( struct state *st, SShadeBob *pShadeBob )
+{
+ unsigned long iColor;
+ short iColorVal;
+ int iPixelX, iPixelY;
+ unsigned int iWidth, iHeight;
+
+ MoveShadeBob( st, pShadeBob );
+
+ for( iHeight=0; iHeight<st->iBobDiameter; iHeight++ )
+ {
+ iPixelY = pShadeBob->nPosY + iHeight;
+ if( iPixelY >= st->iWinHeight ) iPixelY -= st->iWinHeight;
+
+ for( iWidth=0; iWidth<st->iBobDiameter; iWidth++ )
+ {
+ iPixelX = pShadeBob->nPosX + iWidth;
+ if( iPixelX >= st->iWinWidth ) iPixelX -= st->iWinWidth;
+
+ iColor = XGetPixel( st->pImage, iPixelX, iPixelY );
+
+ /* FIXME: Here is a loop I'd love to take out. */
+ for( iColorVal=0; iColorVal<st->iColorCount; iColorVal++ )
+ if( st->aiColorVals[ iColorVal ] == iColor )
+ break;
+
+ iColorVal += pShadeBob->anDeltaMap[ iWidth * st->iBobDiameter + iHeight ];
+ if( iColorVal >= st->iColorCount ) iColorVal = st->iColorCount - 1;
+ if( iColorVal < 0 ) iColorVal = 0;
+
+ XPutPixel( st->pImage, iPixelX, iPixelY, st->aiColorVals[ iColorVal ] );
+ }
+ }
+
+ /* FIXME: if it's next to the top or left sides of screen this will break. However, it's not noticable. */
+ XPutImage( st->dpy, st->window, st->gc, st->pImage,
+ pShadeBob->nPosX, pShadeBob->nPosY, pShadeBob->nPosX, pShadeBob->nPosY, st->iBobDiameter, st->iBobDiameter );
}
-static void CreateTables( unsigned int nDegrees )
+static void CreateTables( struct state *st, unsigned int nDegrees )
{
- double nRadian;
- unsigned int iDegree;
- anSinTable = calloc( nDegrees, sizeof(double) );
-
- for( iDegree=0; iDegree<nDegrees; iDegree++ )
- {
- nRadian = ( (double)(2*iDegree) / (double)nDegrees ) * M_PI;
- anSinTable[ iDegree ] = sin( nRadian );
- }
+ double nRadian;
+ unsigned int iDegree;
+ st->anSinTable = calloc( nDegrees, sizeof(double) );
+ st->anCosTable = calloc( nDegrees, sizeof(double) );
+
+ for( iDegree=0; iDegree<nDegrees; iDegree++ )
+ {
+ nRadian = ( (double)(2*iDegree) / (double)nDegrees ) * M_PI;
+ st->anSinTable[ iDegree ] = sin( nRadian );
+ st->anCosTable[ iDegree ] = cos( nRadian );
+ }
}
-static void SetPalette(Display *pDisplay, Window Win, char *sColor,
- int *ncolorsP, XColor *aXColors )
+static unsigned long * SetPalette(struct state *st )
{
- XWindowAttributes XWinAttrib;
- Colormap CMap;
- XColor Color;
- int nHue;
- double nSat, nVal;
-
- XGetWindowAttributes( pDisplay, Win, &XWinAttrib );
- CMap = XWinAttrib.colormap;
-
- Color.red = ( RANDOM() % 3 ) * 0x7FFF; /* Either full, half or none. */
- Color.green = ( RANDOM() % 3 ) * 0x7FFF;
- Color.blue = ( RANDOM() % 3 ) * 0x7FFF;
-
- /* If Color is black, grey, or white, then make SURE its a color */
- if( Color.red == Color.green && Color.green == Color.blue )
- { Color.red = 0xFFFF;
- Color.green = ( RANDOM() % 3 ) * 0x7FFF;
- Color.blue = 0; }
-
- if( strcasecmp( sColor, "random" ) &&
- !XParseColor( pDisplay, CMap, sColor, &Color ) )
- fprintf( stderr,
- "%s: color %s not found in database. Choosing to random...\n",
- progname, sColor );
-
- rgb_to_hsv( Color.red, Color.green, Color.blue, &nHue, &nSat, &nVal );
+ XWindowAttributes XWinAttribs;
+ XColor Color, *aColors;
+ signed short iColor;
+ float nHalfColors;
+
+ XGetWindowAttributes( st->dpy, st->window, &XWinAttribs );
+
+ Color.red = RANDOM() % 0xFFFF;
+ Color.green = RANDOM() % 0xFFFF;
+ Color.blue = RANDOM() % 0xFFFF;
+
+ if( strcasecmp( st->sColor, "random" ) && !XParseColor( st->dpy, XWinAttribs.colormap, st->sColor, &Color ) )
+ fprintf( stderr, "%s: color %s not found in database. Choosing to random...\n", progname, st->sColor );
+
#ifdef VERBOSE
- printf( "RGB (%d, %d, %d) = HSV (%d, %g, %g)\n",
- Color.red, Color.green, Color.blue, nHue, nSat, nVal );
+ printf( "%s: Base color (RGB): <%d, %d, %d>\n", progname, Color.red, Color.green, Color.blue );
#endif /* VERBOSE */
- if (*ncolorsP != 0)
- free_colors (pDisplay, CMap, aXColors, *ncolorsP);
-
- *ncolorsP = get_integer_resource ("ncolors", "Integer");
- if (*ncolorsP <= 0) *ncolorsP = 64;
-
- /* allocate two color ramps, black -> color -> white. */
- {
- int n1, n2;
- n1 = *ncolorsP / 2;
- make_color_ramp( pDisplay, CMap, 0, 0, 0, nHue, nSat, nVal,
- aXColors, &n1,
- False, True, False );
- n2 = *ncolorsP - n1;
- make_color_ramp( pDisplay, CMap, nHue, nSat, nVal, 0, 0, 1,
- aXColors + n1, &n2,
- False, True, False );
- *ncolorsP = n1 + n2;
- }
+ st->iColorCount = get_integer_resource(st->dpy, "ncolors", "Integer" );
+ if( st->iColorCount < 2 ) st->iColorCount = 2;
+ if( st->iColorCount > 255 ) st->iColorCount = 255;
+
+ aColors = calloc( st->iColorCount, sizeof(XColor) );
+ st->aiColorVals = calloc( st->iColorCount, sizeof(unsigned long) );
+
+ for( iColor=0; iColor<st->iColorCount; iColor++ )
+ {
+ nHalfColors = st->iColorCount / 2.0F;
+ /* Black -> Base Color */
+ if( iColor < (st->iColorCount/2) )
+ {
+ aColors[ iColor ].red = ( Color.red / nHalfColors ) * iColor;
+ aColors[ iColor ].green = ( Color.green / nHalfColors ) * iColor;
+ aColors[ iColor ].blue = ( Color.blue / nHalfColors ) * iColor;
+ }
+ /* Base Color -> White */
+ else
+ {
+ aColors[ iColor ].red = ( ( ( 0xFFFF - Color.red ) / nHalfColors ) * ( iColor - nHalfColors ) ) + Color.red;
+ aColors[ iColor ].green = ( ( ( 0xFFFF - Color.green ) / nHalfColors ) * ( iColor - nHalfColors ) ) + Color.green;
+ aColors[ iColor ].blue = ( ( ( 0xFFFF - Color.blue ) / nHalfColors ) * ( iColor - nHalfColors ) ) + Color.blue;
+ }
+
+ if( !XAllocColor( st->dpy, XWinAttribs.colormap, &aColors[ iColor ] ) )
+ {
+ /* start all over with less colors */
+ XFreeColors( st->dpy, XWinAttribs.colormap, st->aiColorVals, iColor, 0 );
+ free( aColors );
+ free( st->aiColorVals );
+ st->iColorCount--;
+ aColors = calloc( st->iColorCount, sizeof(XColor) );
+ st->aiColorVals = calloc( st->iColorCount, sizeof(unsigned long) );
+ iColor = -1;
+ }
+ else
+ st->aiColorVals[ iColor ] = aColors[ iColor ].pixel;
+ }
+
+ free( aColors );
+
+ XSetWindowBackground( st->dpy, st->window, st->aiColorVals[ 0 ] );
+
+ return st->aiColorVals;
}
-static void Initialize( Display *pDisplay, Window Win,
- GC *pGC, XImage **pXImage,
- int *ncolorsP, XColor *aXColors )
+static void Initialize( struct state *st )
{
- XGCValues gcValues;
- XWindowAttributes XWinAttribs;
- int bpp;
-
- /* Create the Image for drawing */
- XGetWindowAttributes( pDisplay, Win, &XWinAttribs );
-
- /* Find the preferred bits-per-pixel. */
- {
- int i, pfvc = 0;
- XPixmapFormatValues *pfv = XListPixmapFormats (pDisplay, &pfvc);
- for (i = 0; i < pfvc; i++)
- if (pfv[i].depth == XWinAttribs.depth)
- {
- bpp = pfv[i].bits_per_pixel;
- break;
- }
- if (pfv)
- XFree (pfv);
- }
-
- /* Create the GC. */
- *pGC = XCreateGC( pDisplay, Win, 0, &gcValues );
-
- *pXImage = XCreateImage(pDisplay, XWinAttribs.visual,
- XWinAttribs.depth,
- ZPixmap, 0, NULL,
- XWinAttribs.width, XWinAttribs.height,
- BitmapPad(pDisplay), 0);
- (*pXImage)->data = calloc((*pXImage)->bytes_per_line,
- (*pXImage)->height);
-
- /* These are precalculations used in Execute(). */
- nMaxExtentX = ( XWinAttribs.width / 2 ) - 20;
- nMaxExtentY = ( XWinAttribs.height / 2 ) - 20;
- nMinExtentX = nMaxExtentX / 3;
- nMinExtentY = nMaxExtentY / 3;
- nHalfWidth = ( XWinAttribs.width / 2 ) - 16;
- nHalfHeight = ( XWinAttribs.height / 2 ) - 16;
-
- /* Create the Sin and Cosine lookup tables. */
- nDegreeCount = get_integer_resource( "degrees", "Integer" );
- if( nDegreeCount < 90 ) nDegreeCount = 90;
- if( nDegreeCount > 5400 ) nDegreeCount = 5400;
- CreateTables( nDegreeCount );
-
- /* Get the colors. */
- sColor = get_string_resource( "color", "Color" );
- if( sColor == NULL)
- SetPalette( pDisplay, Win, "random", ncolorsP, aXColors );
- else
- SetPalette( pDisplay, Win, sColor, ncolorsP, aXColors );
+ XGCValues gcValues;
+ XWindowAttributes XWinAttribs;
+ /*int iBitsPerPixel;*/
+
+ /* Create the Image for drawing */
+ XGetWindowAttributes( st->dpy, st->window, &XWinAttribs );
+
+#if 0
+ /* Find the preferred bits-per-pixel. (jwz) */
+ {
+ int i, pfvc = 0;
+ XPixmapFormatValues *pfv = XListPixmapFormats( st->dpy, &pfvc );
+ for( i=0; i<pfvc; i++ )
+ if( pfv[ i ].depth == XWinAttribs.depth )
+ {
+ iBitsPerPixel = pfv[ i ].bits_per_pixel;
+ break;
+ }
+ if( pfv )
+ XFree (pfv);
+ }
+#endif
+
+ /* Create the GC. */
+ st->gc = XCreateGC( st->dpy, st->window, 0, &gcValues );
+
+ st->pImage = XCreateImage( st->dpy, XWinAttribs.visual, XWinAttribs.depth, ZPixmap, 0, NULL,
+ XWinAttribs.width, XWinAttribs.height, 8 /*BitmapPad( st->dpy )*/, 0 );
+ st->pImage->data = calloc((st->pImage)->bytes_per_line, (st->pImage)->height);
+
+ st->iWinWidth = XWinAttribs.width;
+ st->iWinHeight = XWinAttribs.height;
+
+ /* These are precalculations used in Execute(). */
+ st->iBobDiameter = ( ( st->iWinWidth < st->iWinHeight ) ? st->iWinWidth : st->iWinHeight ) / 25;
+ st->iBobRadius = st->iBobDiameter / 2;
+#ifdef VERBOSE
+ printf( "%s: Bob Diameter = %d\n", progname, st->iBobDiameter );
+#endif
+
+ st->iWinCenterX = ( XWinAttribs.width / 2 ) - st->iBobRadius;
+ st->iWinCenterY = ( XWinAttribs.height / 2 ) - st->iBobRadius;
+
+ st->iVelocity = ( ( st->iWinWidth < st->iWinHeight ) ? st->iWinWidth : st->iWinHeight ) / 150;
+
+ /* Create the Sin and Cosine lookup tables. */
+ st->iDegreeCount = get_integer_resource(st->dpy, "degrees", "Integer" );
+ if( st->iDegreeCount == 0 ) st->iDegreeCount = ( XWinAttribs.width / 6 ) + 400;
+ else if( st->iDegreeCount < 90 ) st->iDegreeCount = 90;
+ else if( st->iDegreeCount > 5400 ) st->iDegreeCount = 5400;
+ CreateTables( st, st->iDegreeCount );
+#ifdef VERBOSE
+ printf( "%s: Using a %d degree circle.\n", progname, st->iDegreeCount );
+#endif /* VERBOSE */
+
+ /* Get the base color. */
+ st->sColor = get_string_resource(st->dpy, "color", "Color" );
}
-void screenhack(Display *pDisplay, Window Win )
+static void *
+shadebobs_init (Display *dpy, Window window)
{
- GC gc;
- int ncolors = 0;
- XColor aXColors[ 256 ];
- XImage *pImage;
- unsigned char nShadeBobCount, iShadeBob;
- SShadeBob *aShadeBobs;
+ struct state *st = (struct state *) calloc (1, sizeof(*st));
+
#ifdef VERBOSE
- time_t nTime = time( NULL );
- unsigned short iFrame = 0;
+ time_t nTime = time( NULL );
+ unsigned short iFrame = 0;
#endif /* VERBOSE */
- int delay, cycles, i;
- nShadeBobCount = get_integer_resource( "count", "Integer" );
- if( nShadeBobCount > 64 ) nShadeBobCount = 64;
- if( nShadeBobCount < 1 ) nShadeBobCount = 1;
+ st->dpy = dpy;
+ st->window = window;
- if( ( aShadeBobs = calloc( nShadeBobCount, sizeof(SShadeBob) ) ) == NULL )
- {
- fprintf( stderr, "Could not allocate %d ShadeBobs\n", nShadeBobCount );
- return;
- }
+ st->nShadeBobCount = get_integer_resource(st->dpy, "count", "Integer" );
+ if( st->nShadeBobCount > 64 ) st->nShadeBobCount = 64;
+ if( st->nShadeBobCount < 1 ) st->nShadeBobCount = 1;
+
+ if( ( st->aShadeBobs = calloc( st->nShadeBobCount, sizeof(SShadeBob) ) ) == NULL )
+ {
+ fprintf( stderr, "%s: Could not allocate %d ShadeBobs\n", progname, st->nShadeBobCount );
+ abort();
+ }
#ifdef VERBOSE
- printf( "Allocated %d ShadeBobs\n", nShadeBobCount );
+ printf( "%s: Allocated %d ShadeBobs\n", progname, st->nShadeBobCount );
#endif /* VERBOSE */
- Initialize( pDisplay, Win, &gc, &pImage, &ncolors, aXColors );
+ Initialize( st );
+
+ for( st->iShadeBob=0; st->iShadeBob<st->nShadeBobCount; st->iShadeBob++ )
+ InitShadeBob( st, &st->aShadeBobs[ st->iShadeBob ], st->iShadeBob % 2 );
- for( iShadeBob=0; iShadeBob<nShadeBobCount; iShadeBob++ )
- InitShadeBob( &aShadeBobs[ iShadeBob ], iShadeBob % 2 );
+ st->delay = get_integer_resource(st->dpy, "delay", "Integer" );
+ st->cycles = get_integer_resource(st->dpy, "cycles", "Integer" ) * st->iDegreeCount;
- delay = get_integer_resource( "delay", "Integer" );
- cycles = get_integer_resource( "cycles", "Integer" ) * (nDegreeCount / 3);
- i = cycles;
+ st->draw_i = 99999999;
+ return st;
+}
- while (1)
- {
- screenhack_handle_events( pDisplay );
+static unsigned long
+shadebobs_draw (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
- if (i++ >= cycles)
+ if( st->draw_i++ >= st->cycles )
{
- i = 0;
- XClearWindow (pDisplay, Win);
- memset (pImage->data, 0, pImage->bytes_per_line * pImage->height);
- for( iShadeBob=0; iShadeBob<nShadeBobCount; iShadeBob++ )
- ResetShadeBob( &aShadeBobs[ iShadeBob ] );
- SetPalette( pDisplay, Win, sColor, &ncolors, aXColors );
+ XWindowAttributes XWinAttribs;
+ XGetWindowAttributes( st->dpy, st->window, &XWinAttribs );
+
+ st->draw_i = 0;
+#if 0
+ memset( st->pImage->data, 0, st->pImage->bytes_per_line * st->pImage->height );
+#else
+ {
+ /* fill the image with the actual value of the black pixel, not 0. */
+ unsigned long black = BlackPixelOfScreen (XWinAttribs.screen);
+ int x, y;
+ for (y = 0; y < XWinAttribs.height; y++)
+ for (x = 0; x < XWinAttribs.width; x++)
+ XPutPixel (st->pImage, x, y, black);
+ }
+#endif
+
+ for( st->iShadeBob=0; st->iShadeBob<st->nShadeBobCount; st->iShadeBob++ )
+ ResetShadeBob( st, &st->aShadeBobs[ st->iShadeBob ] );
+ XFreeColors( st->dpy, XWinAttribs.colormap, st->aiColorVals, st->iColorCount, 0 );
+ free( st->aiColorVals );
+ st->aiColorVals = SetPalette( st );
+ XClearWindow( st->dpy, st->window );
}
- for( iShadeBob=0; iShadeBob<nShadeBobCount; iShadeBob++ )
- Execute( &aShadeBobs[ iShadeBob ], pDisplay, Win, &gc,
- pImage, ncolors, aXColors );
+ for( st->iShadeBob=0; st->iShadeBob<st->nShadeBobCount; st->iShadeBob++ )
+ Execute( st, &st->aShadeBobs[ st->iShadeBob ] );
- if( delay && !(i % 4) )
- usleep(delay);
+ return st->delay;
+}
-#ifdef VERBOSE
- iFrame++;
- if( nTime - time( NULL ) )
- {
- printf( "FPS: %d\n", iFrame );
- nTime = time( NULL );
- iFrame = 0;
- }
-#endif /* VERBOSE */
- }
+static void
+shadebobs_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+}
+
+static Bool
+shadebobs_event (Display *dpy, Window window, void *closure, XEvent *event)
+{
+ return False;
+}
- free( anSinTable );
- free( pImage->data );
- XDestroyImage( pImage );
- free( aShadeBobs );
+static void
+shadebobs_free (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ free( st->anSinTable );
+ free( st->anCosTable );
+ /* free( st->pImage->data ); */
+ XDestroyImage( st->pImage );
+ for( st->iShadeBob=0; st->iShadeBob<st->nShadeBobCount; st->iShadeBob++ )
+ free( st->aShadeBobs[ st->iShadeBob ].anDeltaMap );
+ free( st->aShadeBobs );
+ free( st->aiColorVals );
}
+XSCREENSAVER_MODULE ("ShadeBobs", shadebobs)
+
/* End of Module - "shadebobs.c" */
+
+/* vim: ts=4
+ */
projects / xscreensaver / blobdiff