feat(layout): add LayoutPolar

Author: dustypomerleau

examples/basic_charts/src/main.rs

@@ -119,6 +119,29 @@ fn polar_scatter_plot(show: bool, file_name: &str) {
     let mut plot = Plot::new();
     plot.add_trace(trace);
 
+    let ticks = PolarAxisTicks::new().tick_color("#222222");
+
+    let axis_attributes = PolarAxisAttributes::new()
+        .grid_color("#888888")
+        .ticks(ticks);
+
+    let radial_axis = RadialAxis::new()
+        .title("My Title")
+        .axis_attributes(axis_attributes.clone());
+
+    let angular_axis = AngularAxis::new()
+        .direction(PolarDirection::Clockwise)
+        .rotation(45.0)
+        .axis_attributes(axis_attributes);
+
+    let layout_polar = LayoutPolar::new()
+        .bg_color("#eeeeee")
+        .radial_axis(radial_axis)
+        .angular_axis(angular_axis);
+
+    let layout = Layout::new().polar(layout_polar);
+    plot.set_layout(layout);
+
     let path = write_example_to_html(&plot, file_name);
     if show {
         plot.show_html(path);

plotly/src/layout/mod.rs

@@ -19,6 +19,7 @@ mod grid;
 mod legend;
 mod mapbox;
 mod modes;
+mod polar;
 mod rangebreaks;
 mod scene;
 mod shape;
@@ -42,6 +43,7 @@ pub use self::mapbox::{Center, Mapbox, MapboxStyle};
 pub use self::modes::{
     AspectMode, BarMode, BarNorm, BoxMode, ClickMode, UniformTextMode, ViolinMode, WaterfallMode,
 };
+pub use self::polar::LayoutPolar;
 pub use self::rangebreaks::RangeBreak;
 pub use self::scene::{
     AspectRatio, Camera, CameraCenter, DragMode, DragMode3D, Eye, HoverMode, LayoutScene,
@@ -330,7 +332,7 @@ pub struct LayoutFields {
     // ternary: Option<LayoutTernary>,
     scene: Option<LayoutScene>,
     geo: Option<LayoutGeo>,
-    // polar: Option<LayoutPolar>,
+    polar: Option<LayoutPolar>,
     annotations: Option<Vec<Annotation>>,
     shapes: Option<Vec<Shape>>,
     #[serde(rename = "newshape")]