Reverted Accelerometer and Gyro displays to throttled display (10hz)

Also made accelerometer threshold for drift calibration more lenient for very noisy accelerometers.

The testcontroller tool could eventually be used to come up with a better way to profile an IMU's "stationary" noise so that this threshold can be as tight as necessary for the sake of automatic drift calibration.

(thanks @HilariousCow!)

test/gamepadutils.c

@@ -1611,8 +1611,7 @@ void RenderGamepadDisplay(GamepadDisplay *ctx, SDL_Gamepad *gamepad)
         has_gyro = SDL_GamepadHasSensor(gamepad, SDL_SENSOR_GYRO);
 
         if (has_accel || has_gyro) {
-            const float gyro_sensor_rate = has_gyro ? SDL_GetGamepadSensorDataRate(gamepad, SDL_SENSOR_GYRO) : 0;
+            const int SENSOR_UPDATE_INTERVAL_MS = 100;
-            const int SENSOR_UPDATE_INTERVAL_MS = gyro_sensor_rate > 0.0f ? (int)( 1000.0f / gyro_sensor_rate ) : 100;
             Uint64 now = SDL_GetTicks();
 
             if (now >= ctx->last_sensor_update + SENSOR_UPDATE_INTERVAL_MS) {
@@ -1622,6 +1621,7 @@ void RenderGamepadDisplay(GamepadDisplay *ctx, SDL_Gamepad *gamepad)
                 if (has_gyro) {
                     SDL_GetGamepadSensorData(gamepad, SDL_SENSOR_GYRO, ctx->gyro_data, SDL_arraysize(ctx->gyro_data));
                 }
+                ctx->last_sensor_update = now;
             }
 
             if (has_accel) {
@@ -1639,8 +1639,7 @@ void RenderGamepadDisplay(GamepadDisplay *ctx, SDL_Gamepad *gamepad)
                 SDLTest_DrawString(ctx->renderer, x + center + 2.0f, y, text);
 
 
-                /* Display a smoothed version of the above for the sake of turntable tests */
+                /* Display the testcontroller tool's evaluation of drift. This is also useful to get an average rate of turn in calibrated turntable tests. */
-
                 if (ctx->gyro_drift_correction_data[0] != 0.0f && ctx->gyro_drift_correction_data[2] != 0.0f && ctx->gyro_drift_correction_data[2] != 0.0f )
                 {
                     y += ctx->button_height + 2.0f;
@@ -1652,7 +1651,7 @@ void RenderGamepadDisplay(GamepadDisplay *ctx, SDL_Gamepad *gamepad)
 
             }
 
-            ctx->last_sensor_update = now;
+
         }
     }
     SDL_free(mapping);
@@ -1830,12 +1829,12 @@ float RenderEulerReadout(GyroDisplay *ctx, GamepadDisplay *gamepad_display )
 
     /* Yaw Readout */
     log_y += new_line_height;
-    SDL_snprintf(text, sizeof(text), "Yaw: %6.2f%s", ctx->euler_displacement_angles[1], DEGREE_UTF8);
+    SDL_snprintf(text, sizeof(text), "  Yaw: %6.2f%s", ctx->euler_displacement_angles[1], DEGREE_UTF8);
     SDLTest_DrawString(ctx->renderer, log_gyro_euler_text_x + 2.0f, log_y, text);
 
     /* Roll Readout */
     log_y += new_line_height;
-    SDL_snprintf(text, sizeof(text), "Roll: %6.2f%s", ctx->euler_displacement_angles[2], DEGREE_UTF8);
+    SDL_snprintf(text, sizeof(text), " Roll: %6.2f%s", ctx->euler_displacement_angles[2], DEGREE_UTF8);
     SDLTest_DrawString(ctx->renderer, log_gyro_euler_text_x + 2.0f, log_y, text);
 
     return log_y + new_line_height; /* Return the next y position for further rendering */

test/gamepadutils.h

@@ -143,7 +143,7 @@ extern void DestroyGamepadButton(GamepadButton *ctx);
 
 /* Gyro element Display */
 /* If you want to calbirate against a known rotation (i.e. a turn table test) Increase ACCELEROMETER_NOISE_THRESHOLD to about 5, or drift correction will be constantly reset.*/
-#define ACCELEROMETER_NOISE_THRESHOLD 0.125f
+#define ACCELEROMETER_NOISE_THRESHOLD 0.5f
 typedef struct Quaternion Quaternion;
 typedef struct GyroDisplay GyroDisplay;
 

test/testcontroller.c

@@ -1409,11 +1409,13 @@ static void UpdateGamepadOrientation( Uint64 delta_time_ns )
 
 static void HandleGamepadSensorEvent( SDL_Event* event )
 {
-    if (!controller)
+    if (!controller) {
         return;
+    }
 
-    if (controller->id != event->gsensor.which)
+    if (controller->id != event->gsensor.which) {
         return;
+    }
 
     if (event->gsensor.sensor == SDL_SENSOR_GYRO) {
         HandleGamepadGyroEvent(event);