annotation form for curtain events. refactor utilities

1 files changed, 11 insertions, 0 deletions

diff --git a/animism-align/frontend/app/utils/index.js b/animism-align/frontend/app/utils/index.js
index c2dd464..273c0ef 100644
--- a/animism-align/frontend/app/utils/index.js
+++ b/animism-align/frontend/app/utils/index.js
@@ -70,6 +70,17 @@ export const timestamp = (n = 0, fps = 1, ms = false) => {
   return (n % 60) + ':' + s
 }
 
+export const timestampToSeconds = time_str => {
+  const time_str_parts = time_str.trim().split(":").map(s => parseFloat(s))
+  if (time_str_parts.length === 3) {
+    return (time_str_parts[0] * 60 + time_str_parts[1]) * 60 + time_str_parts[2]
+  }
+  if (time_str_parts.length === 2) {
+    return time_str_parts[0] * 60 + time_str_parts[1]
+  }
+  return time_str_parts[0]
+}
+
 export const percent = n => (n * 100).toFixed(1) + '%'
 
 export const px = (n, w) => Math.round(n * w) + 'px'