startEnd

pub fn startEnd(self: *AnimateWidget) void {
    dvui.animation(self.data().id, "_end", .{
        .start_val = 1.0,
        .end_val = 0.0,
        .end_time = self.init_opts.duration,
        .easing = self.init_opts.easing orelse dvui.easing.linear,
    });
}