new code

include/settings.h

@@ -126,3 +126,79 @@
 #define PPI_BOAT_RANGE_STEP_3  6.0f
 #define PPI_BOAT_RANGE_STEP_4 12.0f
 #define PPI_BOAT_RANGE_STEP_5 24.0f
+
+/* ============================================================
+ * WINDOW AND PANEL LAYOUT
+ * Component: Thread 1 (main.cpp), 01_classes, 02_text_description
+ * ============================================================ */
+
+#define WINDOW_WIDTH      1920
+#define WINDOW_HEIGHT     1080
+#define WINDOW_TITLE      "RAF / Marine Radar Exhibit"
+
+// Left text panel occupies left side; scope and status bar share the right side
+#define LEFT_PANEL_WIDTH  500
+#define STATUS_BAR_HEIGHT 250
+
+// Derived dimensions — scope area fills remaining right-side space
+#define SCOPE_WIDTH   (WINDOW_WIDTH  - LEFT_PANEL_WIDTH)
+#define SCOPE_HEIGHT  (WINDOW_HEIGHT - STATUS_BAR_HEIGHT)
+
+/* ============================================================
+ * TEXT RENDERING
+ * Component: 02_text_description
+ * ============================================================ */
+
+#define FONT_PATH        "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf"
+#define FONT_SIZE_NORMAL  18u
+#define FONT_SIZE_TITLE   24u
+
+// Pixels between text baselines at scale 1.0 with FONT_SIZE_NORMAL
+#define LINE_HEIGHT       24.0f
+
+// Pixel margin from panel edge for text placement
+#define TEXT_MARGIN       10.0f
+
+/* ============================================================
+ * SHADER DIRECTORY
+ * Component: all components that load shaders
+ * ============================================================ */
+
+// Path is relative to the build/ directory where the executable lives
+#define SHADER_DIR  "../shaders/"
+
+/* ============================================================
+ * KEYBOARD CONTROL STEP SIZES
+ * Component: Thread 1 keyboard handler (main.cpp)
+ * ============================================================ */
+
+#define INTENSITY_STEP          0.05f
+#define SENSITIVITY_STEP        0.05f
+#define STC_SENSITIVITY_STEP    0.05f
+#define STC_RANGE_STEP          0.05f
+#define NOISE_FILTER_STEP       0.05f
+#define RADIOGON_STEP           1.0f
+#define BEARING_CURSOR_STEP     1.0f
+#define RANGE_CURSOR_STEP       0.02f
+#define MARINE_A_BEARING_STEP   1.0f
+#define MAX_RANGE_STEP          0.1f
+
+/* ============================================================
+ * KEYBOARD CONTROL LIMITS
+ * Component: Thread 1 keyboard handler (main.cpp)
+ * ============================================================ */
+
+#define INTENSITY_MIN        0.0f
+#define INTENSITY_MAX        2.0f
+#define SENSITIVITY_MIN      0.0f
+#define SENSITIVITY_MAX      2.0f
+#define STC_SENSITIVITY_MIN  0.0f
+#define STC_SENSITIVITY_MAX  1.0f
+#define STC_RANGE_MIN        0.0f
+#define STC_RANGE_MAX        1.0f
+#define NOISE_FILTER_MIN     0.0f
+#define NOISE_FILTER_MAX     1.0f
+#define RANGE_CURSOR_MIN     0.0f
+#define RANGE_CURSOR_MAX     1.0f
+#define MAX_RANGE_MIN        0.1f
+#define MAX_RANGE_MAX        1.0f