Add converting from [f64; 2], (f64, f64), [..] for ImPlotRange

#15

implot-sys/src/lib.rs

@@ -6,4 +6,55 @@
 #[cfg(test)]
 use imgui_sys as _;
 
+use std::ops::Range;
 include!("bindings.rs");
+
+impl From<Range<f64>> for ImPlotRange {
+    fn from(from: Range<f64>) -> Self {
+        ImPlotRange {
+            Min: from.start,
+            Max: from.end,
+        }
+    }
+}
+
+impl From<[f64; 2]> for ImPlotRange {
+    fn from(from: [f64; 2]) -> Self {
+        ImPlotRange {
+            Min: from[0],
+            Max: from[1],
+        }
+    }
+}
+
+impl From<(f64, f64)> for ImPlotRange {
+    fn from(from: (f64, f64)) -> Self {
+        ImPlotRange {
+            Min: from.0,
+            Max: from.1,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_plot_range_from_range() {
+        let r = 5.0..7.0;
+        let im_range: ImPlotRange = r.clone().into();
+        assert_eq!(im_range.Min, r.start);
+        assert_eq!(im_range.Max, r.end);
+
+        let arr = [7.0, 8.0];
+        let im_range: ImPlotRange = arr.clone().into();
+        assert_eq!(im_range.Min, arr[0]);
+        assert_eq!(im_range.Max, arr[1]);
+
+        let tuple = (12.0, 19.0);
+        let im_range: ImPlotRange = tuple.clone().into();
+        assert_eq!(im_range.Min, tuple.0);
+        assert_eq!(im_range.Max, tuple.1);
+    }
+}