From b1cca46a8ae26f3123c93ad4da1a9d0e32dfe1bd Mon Sep 17 00:00:00 2001
From: tth <tth@fubar.tetalab.org>
Date: Sun, 14 Feb 2021 13:16:58 +0100
Subject: [PATCH] missing file, oups

---
 funcs/plasmas.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 funcs/plasmas.c

diff --git a/funcs/plasmas.c b/funcs/plasmas.c
new file mode 100644
index 0000000..ba4d97a
--- /dev/null
+++ b/funcs/plasmas.c
@@ -0,0 +1,43 @@
+/*
+			PLASMAS
+
+	Inspiration Reep : https://blog.314r.net/2021/01/10/plasma/
+
+*/
+
+#include  <stdio.h>
+#include  <math.h>
+
+#include "../floatimg.h"
+
+extern int		verbosity;
+
+/* --------------------------------------------------------------------- */
+/* --------------------------------------------------------------------- */
+int fimg_prototype_plasma(FloatImg *img, double time, int type)
+{
+int		x, y;
+float		rgb[3];
+double		dx, dy;
+
+fprintf(stderr, ">>> %s ( %p %.3f %d )\n", __func__,
+				img, time, type);
+
+for (y=0; y<img->height; y++) {
+	dy = ((double)y/(double)img->height) - 0.5000;
+
+	for (x=0; x<img->width; x++) {
+		dx = ((double)x/(double)img->width) - 0.5000;
+
+		rgb[0] = sin(dx*10 + time) + 1.0;
+		rgb[1] = sin(dx*12 + time) + 1.0;
+		rgb[2] = sin(dx*14 + time) + 1.0;
+		fimg_put_rgb(img, x, y, rgb);
+
+		}
+
+	}
+
+return 0;
+}
+/* --------------------------------------------------------------------- */