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--- hacks/xmatrix.c 2019-08-21 22:45:53.000000000 -0500
+++ hacks/xmatrix.c.mod 2020-03-22 16:23:50.436339568 -0500
@@ -221,6 +221,14 @@
{
const unsigned char *png = 0;
unsigned long size = 0;
+ unsigned long pixel;
+ unsigned short int dark_val, light_val;
+ int x, y;
+ const char *shift_text = get_string_resource(dpy, "colorShift", "String");
+ XGCValues gcv;
+ GC gc;
+ XImage *ximg;
+
if (which == 1)
{
if (state->small_p)
@@ -238,6 +246,46 @@
state->images[which] =
image_data_to_pixmap (state->dpy, state->window, png, size,
&state->image_width, &state->image_height, 0);
+
+ ximg = XGetImage (state->dpy, state->images[which], 0, 0, state->image_width, state->image_height, AllPlanes, ZPixmap);
+ /*fprintf(stderr, "XImage dimensions: %d : %d\n", ximg->width, ximg->height);
+ fprintf(stderr, "XImage color masks: Red[%lu] : Green[%lu] : Blue[%lu]\n", ximg->red_mask, ximg->green_mask, ximg->blue_mask);
+ fprintf(stderr, "XImage depth: %d, Bits per pixel: %d\n", ximg->depth, ximg->bits_per_pixel);*/
+
+ if (shift_text != NULL)
+ {
+ for (y = 0; y < ximg->height; y++)
+ {
+ for (x = 0; x < ximg->width; x++)
+ {
+ pixel = XGetPixel(ximg, x, y);
+ /*fprintf(stderr, "Pixel %d, %d: %lX\n", x, y, pixel);*/
+ dark_val = (pixel & 0xff);
+ light_val = (pixel & 0xff00) >> 8;
+ /*fprintf(stderr, "Colors: red[%X], green[%X], blue[%X]\n", red, green, blue);*/
+ if (!strcasecmp(shift_text, "yellow"))
+ pixel = (light_val << 16) | (light_val << 8) | (dark_val);
+ else if (!strcasecmp(shift_text, "red"))
+ pixel = (light_val << 16) | (dark_val << 8) | (dark_val);
+ else if (!strcasecmp(shift_text, "purple"))
+ pixel = (light_val << 16) | (dark_val << 8) | (light_val);
+ else if (!strcasecmp(shift_text, "blue"))
+ pixel = (dark_val << 16) | (dark_val << 8) | (light_val);
+ else if (!strcasecmp(shift_text, "aqua"))
+ pixel = (dark_val << 16) | (light_val << 8) | (light_val);
+ else if (!strcasecmp(shift_text, "white"))
+ pixel = (light_val << 16) | (light_val << 8) | (light_val);
+ else if (!strcasecmp(shift_text, "grey"))
+ pixel = (dark_val << 16) | (dark_val << 8) | (dark_val);
+ /*fprintf(stderr, "New Pixel: %lX\n", pixel);*/
+ XPutPixel(ximg, x, y, pixel);
+ }
+ }
+ gc = XCreateGC (dpy, state->images[which], 0, &gcv);
+ XPutImage (dpy, state->images[which], gc, ximg, 0, 0, 0, 0, ximg->width, ximg->height);
+ XFreeGC (dpy, gc);
+ XDestroyImage(ximg);
+ }
}
@@ -565,6 +613,39 @@
}
}
+static int
+densitizer (int x)
+{
+ /* Best fit curve to replace old table.
+ * Now you can twiddle single % values
+ * and its technically doing something.
+ * y = a * exp(b*x)
+ * See 'densitizer.sce' for comparison. */
+
+ /* Declare variables */
+ double a, b;
+ int y;
+
+ /* Clean input */
+ if (x > 100) {
+ x = 100;
+ }
+ else if (x < 1) {
+ x = 1;
+ }
+
+ /* Set exp function params */
+ a=211.538187957;
+ b=-0.0488730165089;
+
+ /* Calculate result, used in xmatrix_init()
+ * and hack_matrix() */
+ y=a*exp(b*x);
+
+ /*printf("\nDensitizer. x=%d, y=%d", x, y);*/
+ return(y);
+}
+
static void *
xmatrix_init (Display *dpy, Window window)
@@ -644,7 +725,7 @@
calloc (sizeof(m_cell), state->grid_width * state->grid_height);
state->feeders = (m_feeder *) calloc (sizeof(m_feeder), state->grid_width);
- state->density = get_integer_resource (dpy, "density", "Integer");
+ state->density = (get_integer_resource (dpy, "density", "Integer"));
insert = get_string_resource(dpy, "insert", "Insert");
if (insert && !strcmp(insert, "top"))
@@ -1054,28 +1135,6 @@
}
-static int
-densitizer (m_state *state)
-{
- /* Horrid kludge that converts percentages (density of screen coverage)
- to the parameter that actually controls this. I got this mapping
- empirically, on a 1024x768 screen. Sue me. */
- if (state->density < 10) return 85;
- else if (state->density < 15) return 60;
- else if (state->density < 20) return 45;
- else if (state->density < 25) return 25;
- else if (state->density < 30) return 20;
- else if (state->density < 35) return 15;
- else if (state->density < 45) return 10;
- else if (state->density < 50) return 8;
- else if (state->density < 55) return 7;
- else if (state->density < 65) return 5;
- else if (state->density < 80) return 3;
- else if (state->density < 90) return 2;
- else return 1;
-}
-
-
static void
hack_text (m_state *state)
{
@@ -1502,7 +1561,7 @@
if (f->remaining > 0) /* never change if pipe isn't empty */
continue;
- if ((random() % densitizer(state)) != 0) /* then change N% of the time */
+ if ((random() % densitizer(state->density)) != 0) /* then change N% of the time */
continue;
f->remaining = 3 + (random() % state->grid_height);
@@ -1861,6 +1920,7 @@
{ "-pipe", ".usePipe", XrmoptionNoArg, "True" },
{ "-no-pipe", ".usePipe", XrmoptionNoArg, "False" },
{ "-program", ".program", XrmoptionSepArg, 0 },
+ { "-color-shift", ".colorShift", XrmoptionSepArg, 0 },
{ 0, 0, 0, 0 }
};
--- hacks/config/xmatrix.xml 2016-04-07 21:15:38.000000000 -0500
+++ hacks/config/xmatrix.xml.mod 2020-03-22 16:23:50.436339568 -0500
@@ -25,6 +25,17 @@
<option id="top" _label="Slider algorithm" arg-set="-insert top"/>
<option id="bottom" _label="Expansion algorithm" arg-set="-insert bottom"/>
</select>
+
+ <select id="color">
+ <option id="color_green" _label="Green"/>
+ <option id="color_blue" _label="Blue" arg-set="--color-shift blue"/>
+ <option id="color_aqua" _label="Aqua" arg-set="--color-shift aqua"/>
+ <option id="color_red" _label="Red" arg-set="--color-shift red"/>
+ <option id="color_red" _label="Purple" arg-set="--color-shift purple"/>
+ <option id="color_yellow" _label="Yellow" arg-set="--color-shift yellow"/>
+ <option id="color_white" _label="White" arg-set="--color-shift white"/>
+ <option id="color_grey" _label="Grey" arg-set="--color-shift grey"/>
+ </select>
</hgroup>
<hgroup>
--- hacks/xmatrix.man 2022-09-04 11:40:03.613534185 -0500
+++ hacks/xmatrix.man.mod 2022-10-09 09:09:15.744682643 -0500
@@ -14,6 +14,7 @@
[\-\-mode \fImode\fP]
[\-\-phone \fInumber\fP]
[\-\-fps]
+[\-color\-shift \fIcolor\fP]
.SH DESCRIPTION
The \fIxmatrix\fP program draws the 2D "digital rain" effect, as seen on
the computer monitors in the 1999 film, "The Matrix".
@@ -113,6 +114,10 @@
xmatrix -ascii -program 'ps -eo comm | rev'
xmatrix -program 'od -txC -w6 /dev/random'
xmatrix -program 'cat /dev/random'
+.TP 8
+.B \-color\-shift \fIcolor\fP
+Specify a simple color, one of:
+red, purple, blue, aqua, yellow, white, grey
.sp
.fi
.SH ENVIRONMENT
|