Add slide effects. - pointtools - Simple point utilities to hold text presentations.
(HTM) git clone git://bitreich.org/pointtools/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/pointtools/
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---
(DIR) commit 94fa04f4132f7db25a681f1d52f294351b58c7ca
(DIR) parent e56e6e57aa64f7695dca271de1755794489b2dc6
(HTM) Author: Christoph Lohmann <20h@r-36.net>
Date: Sat, 10 Aug 2024 10:27:59 +0200
Add slide effects.
Diffstat:
M README.md | 4 ++++
A slide-effects/fade.sh | 37 +++++++++++++++++++++++++++++++
A slide-effects/interpolate.c | 86 ++++++++++++++++++++++++++++++
A slide-effects/random-animation.sh | 14 ++++++++++++++
4 files changed, 141 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/README.md b/README.md
@@ -26,6 +26,10 @@ To view the examples:
% dir2point .
+Slide effects:
+
+ % catpoint-wrap slide-effects/fade.sh *.txt
+
There are not many formatting options for now, but it’s enough for daily
usage. If you need any graph or formatting, use troff(1) and all the
(DIR) diff --git a/slide-effects/fade.sh b/slide-effects/fade.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -e
+
+clear
+
+fg_rgb() {
+ printf "\033[38;2;%d;%d;%dm" $1 $2 $3
+}
+
+def() {
+ printf "\033[0m"
+}
+
+from=$1
+to=$2
+
+home() {
+ printf "\033[;H"
+}
+
+i=255
+while [ $i -gt 0 ]; do
+ fg_rgb $i $i $i
+ home
+ cat "$from"
+ i=$((i-1))
+done
+
+clear
+
+while [ $i -lt 255 ]; do
+ fg_rgb $i $i $i
+ home
+ cat "$to"
+ i=$((i+1))
+done
(DIR) diff --git a/slide-effects/interpolate.c b/slide-effects/interpolate.c
@@ -0,0 +1,86 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define STEPS 32
+
+/* SLEEPTIME in microseconds */
+#define SLEEPTIME 100
+
+int
+main(int argc, char *argv[])
+{
+ FILE *from, *to;
+ int i, j, k;
+ int width, height;
+ int fromn, ton;
+ size_t linesize;
+ ssize_t r;
+ char **fromlines, **tolines, *line;
+ char fromc, toc;
+
+ if (argc < 3)
+ return 1;
+
+ if (!(from = fopen(argv[1], "r")))
+ return 1;
+
+ if (!(to = fopen(argv[2], "r")))
+ return 1;
+
+ line = NULL;
+ linesize = 0;
+ width = 0;
+
+ fromn = 0;
+ fromlines = NULL;
+ while ((r = getline(&line, &linesize, from)) != -1) {
+ if (line[r-1] == '\n')
+ line[--r] = '\0';
+ fromn++;
+ fromlines = realloc(fromlines, fromn * sizeof(*fromlines));
+ fromlines[fromn-1] = strdup(line);
+ if (r > width)
+ width = r;
+ }
+ fclose(from);
+
+ ton = 0;
+ tolines = NULL;
+ while ((r = getline(&line, &linesize, to)) != -1) {
+ if (line[r-1] == '\n')
+ line[--r] = '\0';
+ ton++;
+ tolines = realloc(tolines, ton * sizeof(*tolines));
+ tolines[ton-1] = strdup(line);
+ if (r > width)
+ width = r;
+ }
+ fclose(to);
+
+ height = ton > fromn ? ton : fromn;
+
+ printf("\033[2J");
+ for (k = 0; k <= STEPS; k++) {
+ printf("\033[;H");
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ fromc = ' ';
+ toc = ' ';
+ if (i < fromn && j < strlen(fromlines[i]))
+ fromc = fromlines[i][j];
+ if (i < ton && j < strlen(tolines[i]))
+ toc = tolines[i][j];
+ if (toc & 128)
+ putchar(toc);
+ else
+ putchar(fromc + (toc - fromc) * k / STEPS);
+ }
+ putchar('\n');
+ }
+ usleep(SLEEPTIME);
+ }
+
+ return 0;
+}
(DIR) diff --git a/slide-effects/random-animation.sh b/slide-effects/random-animation.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+randomanimation() {
+ printf '%s\n' beams binarypath blackhole bouncyballs bubbles burn \
+ colorshift crumble decrypt errorcorrect expand fireworks \
+ middleout orbittingvolley overflow pour print rain \
+ randomsequence rings scattered slice slide spotlights spray \
+ swarm synthgrid unstable vhstape waves wipe \
+ | sort -R | head -n 1
+}
+
+# From: https://github.com/ChrisBuilds/terminaltexteffects
+exec tte --frame-rate 400 --input-file "$1" "$(randomanimation)"
+