Merge #19

src/error.rs

@@ -0,0 +1,37 @@
+use std::{
+    error::Error,
+    fmt::{self, Display, Formatter},
+};
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum PrepareError {
+    AtlasFull,
+}
+
+impl Display for PrepareError {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "Prepare Error: The Glyph texture atlas is full.")
+    }
+}
+
+impl Error for PrepareError {}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum RenderError {
+    RemovedFromAtlas,
+    ScreenResolutionChanged,
+}
+
+impl Display for RenderError {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        match self {
+            RenderError::RemovedFromAtlas => {
+                write!(f, "Render Error: Glyph no longer Exists within the Atlas.")
+            }
+            RenderError::ScreenResolutionChanged => write!(
+                f,
+                "Render Error: Screen resolution changed since prepare was last executed."
+            ),
+        }
+    }
+}