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-rw-r--r--pugl_test.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/pugl_test.c b/pugl_test.c
index a42521a..efcc4a8 100644
--- a/pugl_test.c
+++ b/pugl_test.c
@@ -181,7 +181,7 @@ onEvent(PuglView* view, const PuglEvent* event)
event->key.utf8, event->key.filter ? " (filtered)" : "");
break;
case PUGL_MOTION_NOTIFY:
- xAngle = fmodf(xAngle + (float)(event->motion.x - lastMouseX), 360.0f);
+ xAngle = fmodf(xAngle - (float)(event->motion.x - lastMouseX), 360.0f);
yAngle = fmodf(yAngle + (float)(event->motion.y - lastMouseY), 360.0f);
lastMouseX = event->motion.x;
lastMouseY = event->motion.y;