From 331a6e4e536c329371ad23650876364d87fd9561 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sat, 1 Mar 2025 15:25:24 -0500
Subject: add compressor efficiency input

---
 engine.h |  1 +
 main.c   | 19 +++++++++++++++++++
 ui.c     |  5 +++++
 ui.h     |  3 +++
 4 files changed, 28 insertions(+)

diff --git a/engine.h b/engine.h
index 43d5f4b..cb77a35 100644
--- a/engine.h
+++ b/engine.h
@@ -5,6 +5,7 @@ typedef struct {
 	AngularSpeed rpm;
 	Pressure map;
 	Fraction ve;
+	Fraction comp_efficiency;
 } Engine;
 
 void init_engine(Engine *e);
diff --git a/main.c b/main.c
index b9319c5..aa5c161 100644
--- a/main.c
+++ b/main.c
@@ -62,6 +62,7 @@ static void ambient_pressure_row(mu_Context *ctx, UI *ui);
 static void rpm_row(mu_Context *ctx, UI *ui);
 static void map_row(mu_Context *ctx, UI *ui);
 static void ve_row(mu_Context *ctx, UI *ui);
+static void comp_efficiency_row(mu_Context *ctx, UI *ui);
 static void dup_del_row(mu_Context *ctx, UI *ui);
 static void volume_flow_rate_row(mu_Context *ctx, UI *ui);
 static void hpad(mu_Context *ctx, int w);
@@ -139,6 +140,7 @@ main_window(mu_Context *ctx, UI *ui) {
 	rpm_row(ctx, ui);
 	map_row(ctx, ui);
 	ve_row(ctx, ui);
+	comp_efficiency_row(ctx, ui);
 	dup_del_row(ctx, ui);
 
 	vpad(ctx, 0);
@@ -241,6 +243,23 @@ ve_row(mu_Context *ctx, UI *ui) {
 		}
 	}
 }
+static void
+comp_efficiency_row(mu_Context *ctx, UI *ui) {
+	int i;
+
+	mu_layout_row(ctx, 0, NULL, 0);
+	mu_layout_width(ctx, LABEL_WIDTH);
+	mu_label(ctx, "Compressor efficiency:");
+	mu_layout_width(ctx, UNIT_WIDTH);
+	mu_label(ctx, "(%)");
+	mu_layout_width(ctx, FIELD_WIDTH);
+	for (i = 0; i < ui->npoints; i++) {
+		if (w_field(ctx, &ui->comp_efficiency[i])) {
+			set_comp_efficiency(ui, i);
+			set_volume_flow_rate(ui, i);
+		}
+	}
+}
 
 static void
 dup_del_row(mu_Context *ctx, UI *ui) {
diff --git a/ui.c b/ui.c
index 0ef1dfb..d1b4bb2 100644
--- a/ui.c
+++ b/ui.c
@@ -188,6 +188,11 @@ set_ve(UI *ui, int idx) {
 	ui->points[idx].ve = percent(ui->ve[idx].value);
 }
 
+void
+set_comp_efficiency(UI *ui, int idx) {
+	ui->points[idx].comp_efficiency = percent(ui->comp_efficiency[idx].value);
+}
+
 void
 set_volume_flow_rate(UI *ui, int idx) {
 	int unit_idx;
diff --git a/ui.h b/ui.h
index e1cbfcf..db95f25 100644
--- a/ui.h
+++ b/ui.h
@@ -19,6 +19,8 @@ typedef struct {
 
 	w_Field ve[MAX_POINTS];
 
+	w_Field comp_efficiency[MAX_POINTS];
+
 	Engine points[MAX_POINTS];
 
 	w_Select volume_flow_rate_unit;
@@ -35,6 +37,7 @@ void set_ambient_pressure_unit(UI *ui);
 void set_map(UI *ui, int idx);
 void set_map_unit(UI *ui);
 void set_ve(UI *ui, int idx);
+void set_comp_efficiency(UI *ui, int idx);
 void set_volume_flow_rate(UI *ui, int idx);
 void set_all_volume_flow_rate(UI *ui);
 void insert_point(UI *ui, int idx);
-- 
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