Dumb stuff

include/hexagram/speedo.h

@@ -5,6 +5,8 @@
 
 #include <hexagram/gauge.h>
 
+#define HEXAGRAM_SPEEDO_MAX_KPH 289.682
+
 typedef struct _hexagram_speedo {
     hexagram_gauge gauge;
 } hexagram_speedo;

src/cluster.c

@@ -126,7 +126,7 @@ void hexagram_cluster_draw_fg(hexagram_cluster *cluster,
                                cluster->state.rpm);
 
     hexagram_speedo_draw_needle(&cluster->speedo, cr,
-                                (2.00152 * cluster->state.rps * 3600) / 1000.0);
+                                cluster->state.rps);
 
     hexagram_thermo_draw_needle(&cluster->thermo, cr,
                                 cluster->state.temp);

src/gauge.c

@@ -66,7 +66,7 @@ void hexagram_gauge_draw_needle(hexagram_gauge *gauge,
     /*
      * Draw the gauge pivot
      */
-    cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
+    cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
 
     cairo_arc(cr,
               gauge->x,
@@ -78,7 +78,8 @@ void hexagram_gauge_draw_needle(hexagram_gauge *gauge,
     cairo_stroke(cr);
 
     /*
-     * Draw the needle above the pivot */
+     * Draw the needle above the pivot
+     */
     cairo_move_to(cr, gauge->x, gauge->y);
 
     cairo_set_source_rgb(cr, 0, 0.25, 1.0);

src/speedo.c

@@ -60,7 +60,9 @@ void hexagram_speedo_draw_face(hexagram_speedo *speedo,
 
 void hexagram_speedo_draw_needle(hexagram_speedo *speedo,
                                  cairo_t *cr,
-                                 double kph) {
+                                 double rps) {
+    double kph = (2.00152 * rps * 3600) / 1000.0;
+
     if (kph < 0) {
         kph = 0;
     } else if (kph > 290) {
@@ -70,5 +72,5 @@ void hexagram_speedo_draw_needle(hexagram_speedo *speedo,
     hexagram_gauge_draw_needle(&speedo->gauge,
                                cr,
                                0.8,
-                               kph / 289.682);
+                               kph / HEXAGRAM_SPEEDO_MAX_KPH);
 }