Add missing mutex

5 years ago · 0a87451b6d
1 changed files with 4 additions and 2 deletions
--- a/app/src/main/java/de/trac/spherical/rendering/SphereSurfaceView.java
+++ b/app/src/main/java/de/trac/spherical/rendering/SphereSurfaceView.java
@ -58,8 +58,10 @@ public class SphereSurfaceView extends GLSurfaceView implements SensorEventListe
                if (x < getWidth() / 2)
                    dy = dy * -1 ;

-                Matrix.rotateM(rotationMatrix, 0, dy * TOUCH_SCALE_FACTOR, 1.0f, 0.0f, 0.0f);
-                Matrix.rotateM(rotationMatrix, 0, dx * TOUCH_SCALE_FACTOR, 0.0f, 1.0f, 0.0f);
+                synchronized (rotationMatrix) {
+                    Matrix.rotateM(rotationMatrix, 0, dy * TOUCH_SCALE_FACTOR, 1.0f, 0.0f, 0.0f);
+                    Matrix.rotateM(rotationMatrix, 0, dx * TOUCH_SCALE_FACTOR, 0.0f, 1.0f, 0.0f);
+                }
        }

        previousX = x;