28 lines
568 B
Rust
28 lines
568 B
Rust
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use thiserror::Error as TeError;
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#[derive(Debug, TeError)]
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pub enum Error {
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#[error("delta time should not be zero or negative value")]
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BadDeltaTime,
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#[error("fps should should not be zero or negative value")]
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BadFps,
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}
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type Result<T> = std::result::Result<T, Error>;
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pub fn to_fps(delta: f32) -> Result<f32> {
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if delta <= 0f32 {
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Err(Error::BadDeltaTime)
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} else {
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Ok(1f32 / delta)
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}
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}
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pub fn to_delta(fps: f32) -> Result<f32> {
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if fps <= 0f32 {
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Err(Error::BadFps)
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} else {
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Ok(1f32 / fps)
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}
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}
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