general: Add constness to some methods where it is missing

contrib/src/rplight/gpuCommandList.cxx

@@ -51,7 +51,7 @@ void GPUCommandList::add_command(const GPUCommand& cmd) {
  *   list, and are waiting to get processed.
  * @return Amount of commands
  */
-size_t GPUCommandList::get_num_commands() {
+size_t GPUCommandList::get_num_commands() const {
   return _commands.size();
 }
 

contrib/src/rplight/gpuCommandList.h

@@ -42,7 +42,7 @@ PUBLISHED:
   GPUCommandList();
 
   void add_command(const GPUCommand& cmd);
-  size_t get_num_commands();
+  size_t get_num_commands() const;
   size_t write_commands_to(const PTA_uchar &dest, size_t limit = 32);
 
   MAKE_PROPERTY(num_commands, get_num_commands);

contrib/src/rplight/pssmCameraRig.I

@@ -175,7 +175,7 @@ inline void PSSMCameraRig::reset_film_size_cache() {
  * @param index Index of the camera.
  * @return [description]
  */
-inline NodePath PSSMCameraRig::get_camera(size_t index) {
+inline NodePath PSSMCameraRig::get_camera(size_t index) const {
   nassertr(index >= 0 && index < _cam_nodes.size(), NodePath());
   return _cam_nodes[index];
 }
@@ -193,7 +193,7 @@ inline NodePath PSSMCameraRig::get_camera(size_t index) {
  * @param split_index The index of the split
  * @return Distance of the split, ranging from 0 .. 1
  */
-inline float PSSMCameraRig::get_split_start(size_t split_index) {
+inline float PSSMCameraRig::get_split_start(size_t split_index) const {
   float x = (float)split_index / (float)_cam_nodes.size();
   return (exp(_logarithmic_factor*x)-1) / (exp(_logarithmic_factor)-1);
 }
@@ -209,7 +209,7 @@ inline float PSSMCameraRig::get_split_start(size_t split_index) {
  *
  * @return interpolated point in world space
  */
-inline LPoint3 PSSMCameraRig::get_interpolated_point(CoordinateOrigin origin, float depth) {
+inline LPoint3 PSSMCameraRig::get_interpolated_point(CoordinateOrigin origin, float depth) const {
   nassertr(depth >= 0.0 && depth <= 1.0, LPoint3());
   return _curr_near_points[origin] * (1.0 - depth) + _curr_far_points[origin] * depth;
 }
@@ -222,7 +222,7 @@ inline LPoint3 PSSMCameraRig::get_interpolated_point(CoordinateOrigin origin, fl
  *
  * @return view-projection matrix array
  */
-inline const PTA_LMatrix4 &PSSMCameraRig::get_mvp_array() {
+inline const PTA_LMatrix4 &PSSMCameraRig::get_mvp_array() const {
   return _camera_mvps;
 }
 
@@ -238,6 +238,6 @@ inline const PTA_LMatrix4 &PSSMCameraRig::get_mvp_array() {
  *
  * @return Array of near and far planes
  */
-inline const PTA_LVecBase2 &PSSMCameraRig::get_nearfar_array() {
+inline const PTA_LVecBase2 &PSSMCameraRig::get_nearfar_array() const {
   return _camera_nearfar;
 }

contrib/src/rplight/pssmCameraRig.h

@@ -72,11 +72,11 @@ PUBLISHED:
   void update(NodePath cam_node, const LVecBase3 &light_vector);
   inline void reset_film_size_cache();
 
-  inline NodePath get_camera(size_t index);
+  inline NodePath get_camera(size_t index) const;
 
   void reparent_to(NodePath parent);
-  inline const PTA_LMatrix4 &get_mvp_array();
-  inline const PTA_LVecBase2 &get_nearfar_array();
+  inline const PTA_LMatrix4 &get_mvp_array() const;
+  inline const PTA_LVecBase2 &get_nearfar_array() const;
 
 public:
   // Used to access the near and far points in the array
@@ -91,9 +91,9 @@ protected:
   void init_cam_nodes();
   void compute_pssm_splits(const LMatrix4& transform, float max_distance,
                const LVecBase3 &light_vector);
-  inline float get_split_start(size_t split_index);
+  inline float get_split_start(size_t split_index) const;
   LMatrix4 compute_mvp(size_t cam_index);
-  inline LPoint3 get_interpolated_point(CoordinateOrigin origin, float depth);
+  inline LPoint3 get_interpolated_point(CoordinateOrigin origin, float depth) const;
   LVecBase3 get_snap_offset(const LMatrix4& mat, size_t resolution);
 
   std::vector<NodePath> _cam_nodes;

contrib/src/rplight/tagStateManager.I

@@ -83,11 +83,11 @@ apply_state(const std::string& state, NodePath np, Shader* shader,
  * @return Bit mask of the render pass
  */
 inline BitMask32 TagStateManager::
-get_mask(const std::string &container_name) {
+get_mask(const std::string &container_name) const {
   if (container_name == "gbuffer") {
     return BitMask32::bit(1);
   }
-  ContainerList::iterator entry = _containers.find(container_name);
+  ContainerList::const_iterator entry = _containers.find(container_name);
   nassertr(entry != _containers.end(), BitMask32());
   return entry->second.mask;
 }

contrib/src/rplight/tagStateManager.h

@@ -57,7 +57,7 @@ PUBLISHED:
 
   inline void register_camera(const std::string& state, Camera* source);
   inline void unregister_camera(const std::string& state, Camera* source);
-  inline BitMask32 get_mask(const std::string &container_name);
+  inline BitMask32 get_mask(const std::string &container_name) const;
 
 private:
   typedef std::vector<Camera*> CameraList;

panda/src/pnmimage/pnmimage_base.h

@@ -77,7 +77,7 @@ PUBLISHED:
 
 #ifdef HAVE_PYTHON
   static int size() { return 3; }
-  void output(std::ostream &out) {
+  void output(std::ostream &out) const {
     out << "pixel(r=" << r << ", g=" << g << ", b=" << b << ")";
   }
 #endif

panda/src/skel/basicSkel.I

@@ -37,6 +37,6 @@ set_value(int n) {
  * Retreives a value that was previously stored.
  */
 INLINE int BasicSkel::
-get_value() {
+get_value() const {
   return _value;
 }

panda/src/skel/basicSkel.cxx

@@ -27,6 +27,6 @@ set_value_alt(int n) {
  * get_value, except that this isn't an inline function.
  */
 int BasicSkel::
-get_value_alt() {
+get_value_alt() const {
   return _value;
 }

panda/src/skel/basicSkel.h

@@ -30,11 +30,11 @@ PUBLISHED:
 
   // These inline functions allow you to get and set _value.
   INLINE void set_value(int n);
-  INLINE int  get_value();
+  INLINE int get_value() const;
 
   // These do the same thing as the functions above.
   void set_value_alt(int n);
-  int  get_value_alt();
+  int get_value_alt() const;
 
 private:
   int _value;

panda/src/skel/typedSkel.I

@@ -37,6 +37,6 @@ set_value(int n) {
  * Retreives a value that was previously stored.
  */
 INLINE int TypedSkel::
-get_value() {
+get_value() const {
   return _value;
 }

panda/src/skel/typedSkel.cxx

@@ -29,6 +29,6 @@ set_value_alt(int n) {
  * get_value, except that this isn't an inline function.
  */
 int TypedSkel::
-get_value_alt() {
+get_value_alt() const {
   return _value;
 }

panda/src/skel/typedSkel.h

@@ -31,11 +31,11 @@ PUBLISHED:
 
   // These inline functions allow you to get and set _value.
   INLINE void set_value(int n);
-  INLINE int  get_value();
+  INLINE int get_value() const;
 
   // These do the same thing as the functions above.
   void set_value_alt(int n);
-  int  get_value_alt();
+  int get_value_alt() const;
 
 private:
   int _value;