diff --git a/editor/src/render/pedestrian.rs b/editor/src/render/pedestrian.rs
index 07a3008093..73bdbf901c 100644
--- a/editor/src/render/pedestrian.rs
+++ b/editor/src/render/pedestrian.rs
@@ -1,7 +1,7 @@
 use crate::colors::ColorScheme;
 use crate::objects::{Ctx, ID};
 use crate::render::{RenderOptions, Renderable};
-use ezgui::{Color, GfxCtx, Prerender};
+use ezgui::{Color, Drawable, GfxCtx, Prerender};
 use geom::{Bounds, Circle, Distance, Line, Pt2D};
 use map_model::Map;
 use sim::{DrawPedestrianInput, PedestrianID};
@@ -12,21 +12,18 @@ pub struct DrawPedestrian {
     pub id: PedestrianID,
     circle: Circle,
     turn_arrow: Option<Line>,
-    preparing_bike: bool,
     zorder: isize,
+
+    draw_default: Drawable,
 }
 
 impl DrawPedestrian {
-    pub fn new_new(
+    pub fn new(
         input: DrawPedestrianInput,
         map: &Map,
-        _prerender: &Prerender,
-        _cs: &ColorScheme,
+        prerender: &Prerender,
+        cs: &ColorScheme,
     ) -> DrawPedestrian {
-        DrawPedestrian::new(input, map)
-    }
-
-    pub fn new(input: DrawPedestrianInput, map: &Map) -> DrawPedestrian {
         let turn_arrow = if let Some(t) = input.waiting_for_turn {
             // TODO this isn't quite right, but good enough for now
             let angle = map.get_t(t).angle();
@@ -36,12 +33,25 @@ impl DrawPedestrian {
             None
         };
 
+        let circle = Circle::new(input.pos, RADIUS);
+
+        let draw_default = prerender.upload(vec![(
+            if input.preparing_bike {
+                cs.get_def("pedestrian preparing bike", Color::rgb(255, 0, 144))
+                    .shift(input.id.0)
+            } else {
+                cs.get_def("pedestrian", Color::rgb_f(0.2, 0.7, 0.7))
+                    .shift(input.id.0)
+            },
+            circle.to_polygon(),
+        )]);
+
         DrawPedestrian {
             id: input.id,
-            circle: Circle::new(input.pos, RADIUS),
+            circle,
             turn_arrow,
-            preparing_bike: input.preparing_bike,
             zorder: input.on.get_zorder(map),
+            draw_default,
         }
     }
 }
@@ -52,18 +62,11 @@ impl Renderable for DrawPedestrian {
     }
 
     fn draw(&self, g: &mut GfxCtx, opts: RenderOptions, ctx: &Ctx) {
-        let color = opts.color.unwrap_or_else(|| {
-            if self.preparing_bike {
-                ctx.cs
-                    .get_def("pedestrian preparing bike", Color::rgb(255, 0, 144))
-                    .shift(self.id.0)
-            } else {
-                ctx.cs
-                    .get_def("pedestrian", Color::rgb_f(0.2, 0.7, 0.7))
-                    .shift(self.id.0)
-            }
-        });
-        g.draw_circle(color, &self.circle);
+        if let Some(color) = opts.color {
+            g.draw_circle(color, &self.circle);
+        } else {
+            g.redraw(&self.draw_default);
+        }
 
         // TODO tune color, sizes
         if let Some(ref a) = self.turn_arrow {
diff --git a/editor/src/ui.rs b/editor/src/ui.rs
index 551b924e3d..44c6716831 100644
--- a/editor/src/ui.rs
+++ b/editor/src/ui.rs
@@ -470,9 +470,7 @@ impl<S: UIState> UI<S> {
                         list.push(new_draw_vehicle(c, map, prerender, &state.cs));
                     }
                     for p in sim.get_draw_peds(*on, map).into_iter() {
-                        list.push(Box::new(DrawPedestrian::new_new(
-                            p, map, prerender, &state.cs,
-                        )));
+                        list.push(Box::new(DrawPedestrian::new(p, map, prerender, &state.cs)));
                     }
                     agents.put(tick, *on, list);
                 }
diff --git a/ezgui/src/drawing.rs b/ezgui/src/drawing.rs
index 2217a02bb7..4c5878a7ac 100644
--- a/ezgui/src/drawing.rs
+++ b/ezgui/src/drawing.rs
@@ -5,8 +5,6 @@ use crate::{
 use geom::{Bounds, Circle, Distance, Line, Polygon, Pt2D};
 use glium::{uniform, Surface};
 
-const TRIANGLES_PER_CIRCLE: usize = 60;
-
 type Uniforms<'a> = glium::uniforms::UniformsStorage<
     'a,
     [f32; 2],
@@ -107,11 +105,11 @@ impl<'a> GfxCtx<'a> {
             (color, &line.make_polygons(thickness)),
             (
                 color,
-                &Circle::new(line.pt1(), thickness / 2.0).to_polygon(TRIANGLES_PER_CIRCLE),
+                &Circle::new(line.pt1(), thickness / 2.0).to_polygon(),
             ),
             (
                 color,
-                &Circle::new(line.pt2(), thickness / 2.0).to_polygon(TRIANGLES_PER_CIRCLE),
+                &Circle::new(line.pt2(), thickness / 2.0).to_polygon(),
             ),
         ]);
     }
@@ -122,7 +120,7 @@ impl<'a> GfxCtx<'a> {
     }
 
     pub fn draw_circle(&mut self, color: Color, circle: &Circle) {
-        self.draw_polygon(color, &circle.to_polygon(TRIANGLES_PER_CIRCLE));
+        self.draw_polygon(color, &circle.to_polygon());
     }
 
     pub fn draw_polygon(&mut self, color: Color, poly: &Polygon) {
diff --git a/geom/src/circle.rs b/geom/src/circle.rs
index 28e9d45517..14cddfe056 100644
--- a/geom/src/circle.rs
+++ b/geom/src/circle.rs
@@ -2,6 +2,8 @@ use crate::{Angle, Bounds, Distance, Polygon, Pt2D};
 use serde_derive::{Deserialize, Serialize};
 use std::fmt;
 
+const TRIANGLES_PER_CIRCLE: usize = 60;
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct Circle {
     pub center: Pt2D,
@@ -28,17 +30,17 @@ impl Circle {
         }
     }
 
-    pub fn to_polygon(&self, num_triangles: usize) -> Polygon {
+    pub fn to_polygon(&self) -> Polygon {
         let mut pts = vec![self.center];
         let mut indices = Vec::new();
-        for i in 0..num_triangles {
+        for i in 0..TRIANGLES_PER_CIRCLE {
             pts.push(self.center.project_away(
                 self.radius,
-                Angle::new_degs((i as f64) / (num_triangles as f64) * 360.0),
+                Angle::new_degs((i as f64) / (TRIANGLES_PER_CIRCLE as f64) * 360.0),
             ));
             indices.push(0);
             indices.push(i + 1);
-            if i != num_triangles - 1 {
+            if i != TRIANGLES_PER_CIRCLE - 1 {
                 indices.push(i + 2);
             } else {
                 indices.push(1);