From 0d32ff38704d4767163f3e9c972b4410908a34d6 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Mon, 25 Apr 2022 13:11:15 -0700 Subject: modules/compose: implement layer setting randomizer It's getting crazy in here, this is fun: --module=rtv,channels=compose,duration=1,snow_duration=0,context_duration=1 which will rejigger the commpose module w/randomized layers every second. --- src/modules/compose/compose.c | 62 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/modules/compose/compose.c b/src/modules/compose/compose.c index 110bb63..78ec75a 100644 --- a/src/modules/compose/compose.c +++ b/src/modules/compose/compose.c @@ -1,4 +1,5 @@ #include +#include #include #include "til.h" @@ -117,6 +118,64 @@ static void compose_prepare_frame(void *context, unsigned ticks, unsigned n_cpus } +/* return a randomized valid layers= setting */ +static char * compose_random_layers_setting(void) +{ + size_t n_modules, n_rand_overlays, n_overlayable = 0, base_idx; + char *layers = NULL; + const til_module_t **modules; + + til_get_modules(&modules, &n_modules); + + for (size_t i = 0; i < n_modules; i++) { + if (modules[i]->flags & TIL_MODULE_OVERLAYABLE) + n_overlayable++; + } + + base_idx = rand() % (n_modules - n_overlayable); + for (size_t i = 0, j = 0; !layers && i < n_modules; i++) { + if (modules[i]->flags & TIL_MODULE_OVERLAYABLE) + continue; + + if (j++ == base_idx) + layers = strdup(modules[i]->name); + } + + /* TODO FIXME: this doesn't prevent duplicate overlays in the random set, + * which generally is undesirable - but actually watching the results, is + * sometimes interesting. Maybe another module flag is necessary for indicating + * manifold-appropriate overlays. + */ + n_rand_overlays = 1 + (rand() % (n_overlayable - 1)); + for (size_t n = 0; n < n_rand_overlays; n++) { + size_t rand_idx = rand() % n_overlayable; + + for (size_t i = 0, j = 0; i < n_modules; i++) { + if (!(modules[i]->flags & TIL_MODULE_OVERLAYABLE)) + continue; + + if (j++ == rand_idx) { + char *new; + + new = realloc(layers, strlen(layers) + 1 + strlen(modules[i]->name) + 1); + if (!new) { + free(layers); + return NULL; + } + + strcat(new, ":"); + strcat(new, modules[i]->name); + layers = new; + + break; + } + } + } + + return layers; +} + + static int compose_setup(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, til_setup_t **res_setup) { const char *layers; @@ -127,7 +186,8 @@ static int compose_setup(const til_settings_t *settings, til_setting_t **res_set .name = "Colon-separated list of module layers, in draw-order", .key = "layers", .preferred = "drizzle:stars:spiro:plato", - .annotations = NULL + .annotations = NULL, + .random = compose_random_layers_setting, }, &layers, res_setting, -- cgit v1.2.3