update

camera.h

@@ -45,7 +45,7 @@ public:
         updateCameraVectors();
     }
 
-    void mouseCallback(float xoffset, float yoffset, GLboolean constrainPitch = true) {
+    void mouseMoveCallback(float xoffset, float yoffset, GLboolean constrainPitch = true) {
         xoffset *= mouseSensitivity_;
         yoffset *= mouseSensitivity_;
 
@@ -63,10 +63,25 @@ public:
         updateCameraVectors();
     }
 
+    void mouseScrollCallback(float yoffset) {
+        zoom_ -= yoffset;
+        if (zoom_ < 1.0f) {
+            zoom_ = 1.0;
+        }
+        if (zoom_ > 45.0f) {
+            zoom_ = 45.0;
+        }
+        updateCameraVectors();
+    }
+
     glm::mat4 getViewMatrix() {
         return glm::lookAt(position_, position_ + front_, up_);
     }
 
+    bool firstMouse() const { return firstMouse_; }
+
+    void triggleFirstMouse() { firstMouse_ = !firstMouse_; }
+
 private:
     void updateCameraVectors() {
         glm::vec3 front;