+void MasterState::OnMouseDown(const SDL_MouseButtonEvent &e) {
+ if (e.button == SDL_BUTTON_RIGHT) {
+ SDL_SetRelativeMouseMode(SDL_TRUE);
+ cam_dragging = true;
+ }
+}
+
+void MasterState::OnMouseUp(const SDL_MouseButtonEvent &e) {
+ if (e.button == SDL_BUTTON_RIGHT) {
+ SDL_SetRelativeMouseMode(SDL_FALSE);
+ cam_dragging = false;
+ }
+}
+
+void MasterState::OnMouseMotion(const SDL_MouseMotionEvent &e) {
+ constexpr double pitch_scale = PI * 0.001;
+ constexpr double yaw_scale = PI * 0.002;
+ if (cam_dragging) {
+ cam_orient.x = glm::clamp(cam_orient.x + double(e.yrel) * pitch_scale, 0.0, PI * 0.5);
+ cam_orient.y = std::fmod(cam_orient.y + double(e.xrel) * yaw_scale, PI * 2.0);
+ }
+}
+
+void MasterState::OnMouseWheel(const SDL_MouseWheelEvent &e) {
+ constexpr double roll_scale = PI * 0.0625;
+ constexpr double zoom_scale = -1.0;
+ constexpr double zoom_base = 1.125;
+ cam_orient.z = glm::clamp(cam_orient.z + double(e.x) * roll_scale, PI * -0.5, PI * 0.5);
+ cam_tgt_dist = std::max(1.0, cam_tgt_dist * std::pow(zoom_base, double(e.y) * zoom_scale));
+}
+