From b28a5264c3193f8493f364f8ec6d0de3f0b5e5e1 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Fri, 2 May 2025 14:39:07 -0400
Subject: redraw all points after canvas is cleared

---
 ui.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'ui.c')

diff --git a/ui.c b/ui.c
index 70df447..e0b1d64 100644
--- a/ui.c
+++ b/ui.c
@@ -54,6 +54,7 @@ static void compute_manifold_temperature(UI *ui, int idx);
 static void compute_volume_flow_rate(UI *ui, int idx);
 static void compute_mass_flow_rate(UI *ui, int idx);
 static void compute_mass_flow_rate_corrected(UI *ui, int idx);
+static void draw_points(UI *ui);
 static void draw_point(UI *ui, int idx, mu_Color color);
 static void point_coords(UI *ui, int idx, int *x, int *y);
 static const Compressor *selected_compressor(UI *ui);
@@ -443,8 +444,7 @@ compute(UI *ui, int idx) {
 	compute_mass_flow_rate(ui, idx);
 	compute_mass_flow_rate_corrected(ui, idx);
 
-	w_clear_canvas(&ui->comp_img);
-	draw_point(ui, idx, POINT_COLOR);
+	draw_points(ui);
 }
 
 void
@@ -534,6 +534,17 @@ compute_mass_flow_rate_corrected(UI *ui, int idx) {
 	w_set_number(ui->mass_flow_rate_corrected[idx], v);
 }
 
+static void
+draw_points(UI *ui) {
+	int i;
+
+	w_clear_canvas(&ui->comp_img);
+	/* TODO: parallelize? */
+	for (i = 0; i < ui->npoints; i++) {
+		draw_point(ui, i, POINT_COLOR);
+	}
+}
+
 static void
 draw_point(UI *ui, int idx, mu_Color color) {
 	int x, y;
-- 
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