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/* Compute the total duration of the run */
function compute()
{
const fps = parseInt(document.getElementById("framerate").value);
const st = document.getElementById("startobj").value;
const et = document.getElementById("endobj").value;
if (st === undefined || et === undefined || fps === undefined)
return;
const frames = (et - st) * fps;
const s = Math.round(frames / fps * 1000) / 1000;
/* Show the time and mod message in the DOM */
const sf = st * fps;
const ef = et * fps;
const t = time_format(s);
const mod_message = `Mod Note: Retimed (Start Frame: ${
sf}, End Frame: ${ef}, FPS: ${fps}, Total Time: ${t})`;
document.getElementById("time").value = t;
document.getElementById("mod_message").disabled = false;
document.getElementById("mod_message").innerText = mod_message;
document.getElementById("mod_message_button").disabled = false;
}
/* Convert seconds to human readable time */
function time_format(t)
{
const h = ~~(t / 3600);
const m = ~~((t % 3600) / 60);
const s = t % 60;
let ret = "";
if (h > 0)
ret += h + ":" + (m < 10 ? "0" : "");
ret += m + ":" + (s < 10 ? "0" : "") + s.toFixed(3);
return ret;
}
/* Allow user to copy mod message to clipboard */
function copy_mod_message()
{
const text_area = document.getElementById("mod_message");
text_area.focus();
text_area.select();
document.execCommand("copy");
}
/* If framerate is invalid, show an error message and disable start and end
* frame fields */
function check_fps(event)
{
fps = event.target.value;
if (fps > 0 && fps % 1 == 0) {
document.getElementById("startobj").disabled = false;
document.getElementById("endobj").disabled = false;
document.getElementById("compute_button").disabled = false;
} else {
document.getElementById("framerate")
.setCustomValidity("Please enter a valid framerate.");
document.getElementById("framerate").reportValidity();
document.getElementById("startobj").disabled = true;
document.getElementById("endobj").disabled = true;
document.getElementById("compute_button").disabled = true;
}
}
/* Get current frame from input field (either start time or end time) */
function parse_time(event)
{
let inptext_frame = (JSON.parse(event.target.value)).lct;
if (inptext_frame !== undefined) {
const fps = parseInt(
document.getElementById("framerate").value);
const frame_from_obj = (t, fps) => Math.floor(t * fps) / fps;
const fframe = frame_from_obj(inptext_frame, fps);
document.getElementById(event.target.id).value = `${fframe}`;
}
}
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