Function expect_vec3

perro_source/core/perro_animation/src/panim/fields.rs:432–437

(value: &SceneValue, key: &str, line_no: usize)

        .as_bool()
        .ok_or_else(|| format!("line {}: `{}` expects bool", line_no, key))
}

fn expect_vec2(value: &SceneValue, key: &str, line_no: usize) -> Result<Vector2, String> {
    let (x, y) = value
        .as_vec2()
        .ok_or_else(|| format!("line {}: `{}` expects vec2", line_no, key))?;
    Ok(Vector2::new(x, y))
}