Animation support. Logo animates in and out now

1 files changed, 34 insertions, 0 deletions

diff --git a/src/animation.c b/src/animation.c
new file mode 100644
index 0000000..15093d3
--- /dev/null
+++ b/src/animation.c
@@ -0,0 +1,34 @@
+/*
+ * animation.c
+ *
+ * Created by buzzert <buzzert@buzzert.net> 2019-01-20
+ */
+
+#include "animation.h"
+#include <stdlib.h>
+
+anim_time_interval_t anim_now()
+{
+    struct timespec ts;
+    clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+
+    long ms = (ts.tv_sec * 1000) + (ts.tv_nsec / 1000000);
+    return (ms / 1000.0);
+}
+
+/*
+ * Easing functions
+ */
+
+double anim_qubic_ease_out(double p)
+{
+	double f = (p - 1.0);
+    return (f * f * f) + 1;
+}
+
+double anim_quad_ease_out(double p)
+{
+    return -(p * (p - 2.0));
+}
+
+