Merge branch 'master' of https://github.com/highfidelity/hifi into deference

interface/src/Application.cpp

@@ -3387,7 +3387,7 @@ void Application::updateWindowTitle(){
 #ifndef WIN32
     // crashes with vs2013/win32
     qDebug("Application title set to: %s", title.toStdString().c_str());
-#endif !WIN32
+#endif //!WIN32
     _window->setWindowTitle(title);
 }
 

interface/src/Audio.cpp

@@ -102,9 +102,9 @@ Audio::Audio(QObject* parent) :
     _scopeOutputOffset(0),
     _framesPerScope(DEFAULT_FRAMES_PER_SCOPE),
     _samplesPerScope(NETWORK_SAMPLES_PER_FRAME * _framesPerScope),
-    _peqEnabled(false),
     _noiseSourceEnabled(false),
     _toneSourceEnabled(true),
+    _peqEnabled(false),
     _scopeInput(0),
     _scopeOutputLeft(0),
     _scopeOutputRight(0),

interface/src/Audio.h

@@ -26,6 +26,7 @@
 #include "AudioSourceTone.h"
 #include "AudioSourceNoise.h"
 #include "AudioGain.h"
+#include "AudioPan.h"
 #include "AudioFilter.h"
 #include "AudioFilterBank.h"
 

interface/src/entities/RenderableModelEntityItem.cpp

@@ -144,7 +144,7 @@ void RenderableModelEntityItem::render(RenderArgs* args) {
                     float depth = unRotatedExtents.z;
 
                     Extents rotatedExtents = _model->getUnscaledMeshExtents();
-                    calculateRotatedExtents(rotatedExtents, rotation);
+                    rotatedExtents.rotate(rotation);
 
                     glm::vec3 rotatedSize = rotatedExtents.maximum - rotatedExtents.minimum;
 

interface/src/ui/overlays/ModelOverlay.cpp

@@ -58,7 +58,7 @@ void ModelOverlay::render() {
             float depth = unRotatedExtents.z;
             
             Extents rotatedExtents = _model.getUnscaledMeshExtents();
-            calculateRotatedExtents(rotatedExtents, _rotation);
+            rotatedExtents.rotate(_rotation);
             
             glm::vec3 rotatedSize = rotatedExtents.maximum - rotatedExtents.minimum;
             

libraries/audio/src/AudioPan.cpp

@@ -0,0 +1,23 @@
+//
+//  AudioSourceTone.cpp
+//  hifi
+//
+//  Created by Craig Hansen-Sturm on 8/10/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include <assert.h>
+#include <math.h>
+#include <SharedUtil.h>
+#include "AudioRingBuffer.h"
+#include "AudioFormat.h"
+#include "AudioBuffer.h"
+#include "AudioPan.h"
+
+float32_t AudioPan::ONE_MINUS_EPSILON = 1.0f - EPSILON;
+float32_t AudioPan::ZERO_PLUS_EPSILON = 0.0f + EPSILON;
+float32_t AudioPan::ONE_HALF_MINUS_EPSILON = 0.5f - EPSILON;
+float32_t AudioPan::ONE_HALF_PLUS_EPSILON = 0.5f + EPSILON;

libraries/audio/src/AudioPan.h

@@ -0,0 +1,141 @@
+//
+//  AudioPan.h
+//  hifi
+//
+//  Created by Craig Hansen-Sturm on 9/1/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_AudioPan_h
+#define hifi_AudioPan_h
+
+class AudioPan
+{
+    float32_t _pan;
+    float32_t _gainLeft;
+    float32_t _gainRight;
+  
+    static float32_t ONE_MINUS_EPSILON;
+    static float32_t ZERO_PLUS_EPSILON;
+    static float32_t ONE_HALF_MINUS_EPSILON;
+    static float32_t ONE_HALF_PLUS_EPSILON;
+    
+    void updateCoefficients() {
+        
+        // implement constant power sin^2 + cos^2 = 1 panning law
+        
+        if (_pan >= ONE_MINUS_EPSILON) { // full right
+            _gainLeft = 0.0f;
+            _gainRight = 1.0f;
+        }
+        else if (_pan <= ZERO_PLUS_EPSILON) { // full left
+            _gainLeft = 1.0f;
+            _gainRight = 0.0f;
+        }
+        else if ((_pan >= ONE_HALF_MINUS_EPSILON) && (_pan <= ONE_HALF_PLUS_EPSILON)) {  // center
+            _gainLeft = 1.0f / SQUARE_ROOT_OF_2;
+            _gainRight = 1.0f / SQUARE_ROOT_OF_2;
+        }
+        else { // intermediate cases
+            _gainLeft = cosf( TWO_PI * _pan );
+            _gainRight = sinf( TWO_PI * _pan );
+        }
+    }
+    
+public:
+    AudioPan() {
+        initialize();
+    }
+    
+    ~AudioPan() {
+        finalize();
+    }
+    
+    void initialize() {
+        setParameters(0.5f);
+    }
+    
+    void finalize() {
+    }
+    
+    void reset() {
+        initialize();
+    }
+    
+    void setParameters(const float32_t pan) {
+        // pan ranges between 0.0 and 1.0f inclusive.  0.5f is midpoint between full left and full right
+        _pan = std::min(std::max(pan, 0.0f), 1.0f);
+        updateCoefficients();
+    }
+    
+    void getParameters(float32_t& pan) {
+        pan = _pan;
+    }
+    
+    void render(AudioBufferFloat32& frameBuffer) {
+        
+        if (frameBuffer.getChannelCount() != 2) {
+            return;
+        }
+        
+        float32_t** samples = frameBuffer.getFrameData();
+        
+        bool frameAlignment16 = (frameBuffer.getFrameCount() & 0x0F) == 0;
+        if (frameAlignment16) {
+            
+            if (frameBuffer.getChannelCount() == 2) {
+                
+                for (uint16_t i = 0; i < frameBuffer.getFrameCount(); i += 16) {
+                    samples[0][i + 0] *= _gainLeft;
+                    samples[0][i + 1] *= _gainLeft;
+                    samples[0][i + 2] *= _gainLeft;
+                    samples[0][i + 3] *= _gainLeft;
+                    samples[0][i + 4] *= _gainLeft;
+                    samples[0][i + 5] *= _gainLeft;
+                    samples[0][i + 6] *= _gainLeft;
+                    samples[0][i + 7] *= _gainLeft;
+                    samples[0][i + 8] *= _gainLeft;
+                    samples[0][i + 9] *= _gainLeft;
+                    samples[0][i + 10] *= _gainLeft;
+                    samples[0][i + 11] *= _gainLeft;
+                    samples[0][i + 12] *= _gainLeft;
+                    samples[0][i + 13] *= _gainLeft;
+                    samples[0][i + 14] *= _gainLeft;
+                    samples[0][i + 15] *= _gainLeft;
+                    samples[1][i + 0] *= _gainRight;
+                    samples[1][i + 1] *= _gainRight;
+                    samples[1][i + 2] *= _gainRight;
+                    samples[1][i + 3] *= _gainRight;
+                    samples[1][i + 4] *= _gainRight;
+                    samples[1][i + 5] *= _gainRight;
+                    samples[1][i + 6] *= _gainRight;
+                    samples[1][i + 7] *= _gainRight;
+                    samples[1][i + 8] *= _gainRight;
+                    samples[1][i + 9] *= _gainRight;
+                    samples[1][i + 10] *= _gainRight;
+                    samples[1][i + 11] *= _gainRight;
+                    samples[1][i + 12] *= _gainRight;
+                    samples[1][i + 13] *= _gainRight;
+                    samples[1][i + 14] *= _gainRight;
+                    samples[1][i + 15] *= _gainRight;
+                }
+            }
+            else {
+                assert("unsupported channel format");
+            }
+        }
+        else {
+            for (uint16_t i = 0; i < frameBuffer.getFrameCount(); i += 1) {
+                samples[0][i] *= _gainLeft;
+                samples[1][i] *= _gainRight;
+            }
+        }
+    }
+};
+
+#endif // AudioPan_h
+
+

libraries/entities/src/EntityTreeElement.cpp

@@ -509,7 +509,7 @@ bool EntityTreeElement::findDetailedRayIntersection(const glm::vec3& origin, con
                 
                 Extents rotatedExtents = extents;
 
-                calculateRotatedExtents(rotatedExtents, entity->getRotation());
+                rotatedExtents.rotate(entity->getRotation());
 
                 rotatedExtents.minimum += entity->getPosition();
                 rotatedExtents.maximum += entity->getPosition();

libraries/fbx/src/FBXReader.cpp

@@ -33,27 +33,6 @@
 
 using namespace std;
 
-void Extents::reset() {
-    minimum = glm::vec3(FLT_MAX);
-    maximum = glm::vec3(-FLT_MAX);
-}
-
-bool Extents::containsPoint(const glm::vec3& point) const {
-    return (point.x >= minimum.x && point.x <= maximum.x
-        && point.y >= minimum.y && point.y <= maximum.y
-        && point.z >= minimum.z && point.z <= maximum.z);
-}
-
-void Extents::addExtents(const Extents& extents) {
-     minimum = glm::min(minimum, extents.minimum);
-     maximum = glm::max(maximum, extents.maximum);
-}
-
-void Extents::addPoint(const glm::vec3& point) {
-    minimum = glm::min(minimum, point);
-    maximum = glm::max(maximum, point);
-}
-
 bool FBXMesh::hasSpecularTexture() const {
     foreach (const FBXMeshPart& part, parts) {
         if (!part.specularTexture.filename.isEmpty()) {
@@ -2132,40 +2111,3 @@ FBXGeometry readSVO(const QByteArray& model) {
 
     return geometry;
 }
-
-void calculateRotatedExtents(Extents& extents, const glm::quat& rotation) {
-    glm::vec3 bottomLeftNear(extents.minimum.x, extents.minimum.y, extents.minimum.z);
-    glm::vec3 bottomRightNear(extents.maximum.x, extents.minimum.y, extents.minimum.z);
-    glm::vec3 bottomLeftFar(extents.minimum.x, extents.minimum.y, extents.maximum.z);
-    glm::vec3 bottomRightFar(extents.maximum.x, extents.minimum.y, extents.maximum.z);
-    glm::vec3 topLeftNear(extents.minimum.x, extents.maximum.y, extents.minimum.z);
-    glm::vec3 topRightNear(extents.maximum.x, extents.maximum.y, extents.minimum.z);
-    glm::vec3 topLeftFar(extents.minimum.x, extents.maximum.y, extents.maximum.z);
-    glm::vec3 topRightFar(extents.maximum.x, extents.maximum.y, extents.maximum.z);
-
-    glm::vec3 bottomLeftNearRotated =  rotation * bottomLeftNear;
-    glm::vec3 bottomRightNearRotated = rotation * bottomRightNear;
-    glm::vec3 bottomLeftFarRotated = rotation * bottomLeftFar;
-    glm::vec3 bottomRightFarRotated = rotation * bottomRightFar;
-    glm::vec3 topLeftNearRotated = rotation * topLeftNear;
-    glm::vec3 topRightNearRotated = rotation * topRightNear;
-    glm::vec3 topLeftFarRotated = rotation * topLeftFar;
-    glm::vec3 topRightFarRotated = rotation * topRightFar;
-    
-    extents.minimum = glm::min(bottomLeftNearRotated,
-                        glm::min(bottomRightNearRotated,
-                        glm::min(bottomLeftFarRotated,
-                        glm::min(bottomRightFarRotated,
-                        glm::min(topLeftNearRotated,
-                        glm::min(topRightNearRotated,
-                        glm::min(topLeftFarRotated,topRightFarRotated)))))));
-
-    extents.maximum = glm::max(bottomLeftNearRotated,
-                        glm::max(bottomRightNearRotated,
-                        glm::max(bottomLeftFarRotated,
-                        glm::max(bottomRightFarRotated,
-                        glm::max(topLeftNearRotated,
-                        glm::max(topRightNearRotated,
-                        glm::max(topLeftFarRotated,topRightFarRotated)))))));
-}
-

libraries/fbx/src/FBXReader.h

@@ -18,8 +18,10 @@
 #include <QVariant>
 #include <QVector>
 
+#include <Extents.h>
 #include <Shape.h>
 
+
 #include <glm/glm.hpp>
 #include <glm/gtc/quaternion.hpp>
 
@@ -35,31 +37,6 @@ extern const int NUM_FACESHIFT_BLENDSHAPES;
 /// The names of the joints in the Maya HumanIK rig, terminated with an empty string.
 extern const char* HUMANIK_JOINTS[];
 
-class Extents {
-public:
-    /// set minimum and maximum to FLT_MAX and -FLT_MAX respectively
-    void reset();
-
-    /// \param extents another intance of extents
-    /// expand current limits to contain other extents
-    void addExtents(const Extents& extents);
-
-    /// \param point new point to compare against existing limits
-    /// compare point to current limits and expand them if necessary to contain point
-    void addPoint(const glm::vec3& point);
-
-    /// \param point
-    /// \return true if point is within current limits
-    bool containsPoint(const glm::vec3& point) const;
-
-    /// \return whether or not the extents are empty
-    bool isEmpty() const { return minimum == maximum; }
-    bool isValid() const { return !((minimum == glm::vec3(FLT_MAX)) && (maximum == glm::vec3(-FLT_MAX))); }
-
-    glm::vec3 minimum;
-    glm::vec3 maximum;
-};
-
 /// A node within an FBX document.
 class FBXNode {
 public:
@@ -254,6 +231,4 @@ FBXGeometry readFBX(const QByteArray& model, const QVariantHash& mapping);
 /// Reads SVO geometry from the supplied model data.
 FBXGeometry readSVO(const QByteArray& model);
 
-void calculateRotatedExtents(Extents& extents, const glm::quat& rotation);
-
 #endif // hifi_FBXReader_h

libraries/shared/src/AABox.cpp

@@ -11,6 +11,7 @@
 
 #include "AABox.h"
 #include "AACube.h"
+#include "Extents.h"
 #include "GeometryUtil.h"
 #include "SharedUtil.h"
 
@@ -19,6 +20,11 @@ AABox::AABox(const AACube& other) :
     _corner(other.getCorner()), _scale(other.getScale(), other.getScale(), other.getScale()) {
 }
 
+AABox::AABox(const Extents& other) : 
+    _corner(other.minimum),
+    _scale(other.maximum - other.minimum) {
+}
+
 AABox::AABox(const glm::vec3& corner, float size) : 
     _corner(corner), _scale(size, size, size) {
 };

libraries/shared/src/AABox.h

@@ -23,11 +23,13 @@
 #include "StreamUtils.h"
 
 class AACube;
+class Extents;
 
 class AABox {
 
 public:
     AABox(const AACube& other);
+    AABox(const Extents& other);
     AABox(const glm::vec3& corner, float size);
     AABox(const glm::vec3& corner, const glm::vec3& dimensions);
     AABox();

libraries/shared/src/AACube.cpp

@@ -9,11 +9,25 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+#include <glm/gtx/extented_min_max.hpp>
+
 #include "AABox.h"
 #include "AACube.h"
+#include "Extents.h"
 #include "GeometryUtil.h"
 #include "SharedUtil.h"
 
+AACube::AACube(const AABox& other) :
+    _corner(other.getCorner()), _scale(other.getLargestDimension()) {
+}
+
+AACube::AACube(const Extents& other) : 
+    _corner(other.minimum) 
+{
+    glm::vec3 dimensions = other.maximum - other.minimum;
+    _scale = glm::max(dimensions.x, dimensions.y, dimensions.z);
+}
+
 AACube::AACube(const glm::vec3& corner, float size) : 
     _corner(corner), _scale(size) {
 };

libraries/shared/src/AACube.h

@@ -1,6 +1,6 @@
 //
 //  AACube.h
-//  libraries/octree/src
+//  libraries/shared/src
 //
 //  Created by Brad Hefta-Gaub on 04/11/13.
 //  Copyright 2013 High Fidelity, Inc.
@@ -22,10 +22,13 @@
 #include "BoxBase.h"
 
 class AABox;
+class Extents;
 
 class AACube {
 
 public:
+    AACube(const AABox& other);
+    AACube(const Extents& other);
     AACube(const glm::vec3& corner, float size);
     AACube();
     ~AACube() {};

libraries/shared/src/Extents.cpp

@@ -0,0 +1,74 @@
+//
+//  Extents.cpp
+//  libraries/shared/src
+//
+//  Created by Andrzej Kapolka on 9/18/13.
+//  Moved to shared by Brad Hefta-Gaub on 9/11/14
+//  Copyright 2013-2104 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include <glm/gtc/quaternion.hpp>
+#include <glm/gtx/quaternion.hpp>
+#include <glm/gtx/transform.hpp>
+
+#include "Extents.h"
+
+void Extents::reset() {
+    minimum = glm::vec3(FLT_MAX);
+    maximum = glm::vec3(-FLT_MAX);
+}
+
+bool Extents::containsPoint(const glm::vec3& point) const {
+    return (point.x >= minimum.x && point.x <= maximum.x
+        && point.y >= minimum.y && point.y <= maximum.y
+        && point.z >= minimum.z && point.z <= maximum.z);
+}
+
+void Extents::addExtents(const Extents& extents) {
+     minimum = glm::min(minimum, extents.minimum);
+     maximum = glm::max(maximum, extents.maximum);
+}
+
+void Extents::addPoint(const glm::vec3& point) {
+    minimum = glm::min(minimum, point);
+    maximum = glm::max(maximum, point);
+}
+
+void Extents::rotate(const glm::quat& rotation) {
+    glm::vec3 bottomLeftNear(minimum.x, minimum.y, minimum.z);
+    glm::vec3 bottomRightNear(maximum.x, minimum.y, minimum.z);
+    glm::vec3 bottomLeftFar(minimum.x, minimum.y, maximum.z);
+    glm::vec3 bottomRightFar(maximum.x, minimum.y, maximum.z);
+    glm::vec3 topLeftNear(minimum.x, maximum.y, minimum.z);
+    glm::vec3 topRightNear(maximum.x, maximum.y, minimum.z);
+    glm::vec3 topLeftFar(minimum.x, maximum.y, maximum.z);
+    glm::vec3 topRightFar(maximum.x, maximum.y, maximum.z);
+
+    glm::vec3 bottomLeftNearRotated =  rotation * bottomLeftNear;
+    glm::vec3 bottomRightNearRotated = rotation * bottomRightNear;
+    glm::vec3 bottomLeftFarRotated = rotation * bottomLeftFar;
+    glm::vec3 bottomRightFarRotated = rotation * bottomRightFar;
+    glm::vec3 topLeftNearRotated = rotation * topLeftNear;
+    glm::vec3 topRightNearRotated = rotation * topRightNear;
+    glm::vec3 topLeftFarRotated = rotation * topLeftFar;
+    glm::vec3 topRightFarRotated = rotation * topRightFar;
+    
+    minimum = glm::min(bottomLeftNearRotated,
+                        glm::min(bottomRightNearRotated,
+                        glm::min(bottomLeftFarRotated,
+                        glm::min(bottomRightFarRotated,
+                        glm::min(topLeftNearRotated,
+                        glm::min(topRightNearRotated,
+                        glm::min(topLeftFarRotated,topRightFarRotated)))))));
+
+    maximum = glm::max(bottomLeftNearRotated,
+                        glm::max(bottomRightNearRotated,
+                        glm::max(bottomLeftFarRotated,
+                        glm::max(bottomRightFarRotated,
+                        glm::max(topLeftNearRotated,
+                        glm::max(topRightNearRotated,
+                        glm::max(topLeftFarRotated,topRightFarRotated)))))));
+}

libraries/shared/src/Extents.h

@@ -0,0 +1,53 @@
+//
+//  Extents.h
+//  libraries/shared/src
+//
+//  Created by Andrzej Kapolka on 9/18/13.
+//  Moved to shared by Brad Hefta-Gaub on 9/11/14
+//  Copyright 2013-2104 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_Extents_h
+#define hifi_Extents_h
+
+#include <glm/glm.hpp>
+
+class Extents {
+public:
+    /// set minimum and maximum to FLT_MAX and -FLT_MAX respectively
+    void reset();
+
+    /// \param extents another intance of extents
+    /// expand current limits to contain other extents
+    void addExtents(const Extents& extents);
+
+    /// \param point new point to compare against existing limits
+    /// compare point to current limits and expand them if necessary to contain point
+    void addPoint(const glm::vec3& point);
+
+    /// \param point
+    /// \return true if point is within current limits
+    bool containsPoint(const glm::vec3& point) const;
+
+    /// \return whether or not the extents are empty
+    bool isEmpty() const { return minimum == maximum; }
+    bool isValid() const { return !((minimum == glm::vec3(FLT_MAX)) && (maximum == glm::vec3(-FLT_MAX))); }
+    
+    /// rotate the extents around orign by rotation
+    void rotate(const glm::quat& rotation);
+
+    /// \return new Extents which is original rotated around orign by rotation
+    Extents getRotated(const glm::quat& rotation) const {
+        Extents temp = { minimum, maximum };
+        temp.rotate(rotation);
+        return temp;
+    }
+
+    glm::vec3 minimum;
+    glm::vec3 maximum;
+};
+
+#endif // hifi_Extents_h

libraries/shared/src/PropertyFlags.h

@@ -49,7 +49,7 @@ public:
     Enum lastFlag() const { return (Enum)_maxFlag; }
     
     void setHasProperty(Enum flag, bool value = true);
-    bool getHasProperty(Enum flag);
+    bool getHasProperty(Enum flag) const;
     QByteArray encode();
     void decode(const QByteArray& fromEncoded);
 
@@ -61,42 +61,42 @@ public:
 
     PropertyFlags& operator=(const PropertyFlags& other);
 
-    PropertyFlags& operator|=(PropertyFlags other);
+    PropertyFlags& operator|=(const PropertyFlags& other);
     PropertyFlags& operator|=(Enum flag);
 
-    PropertyFlags& operator&=(PropertyFlags other);
+    PropertyFlags& operator&=(const PropertyFlags& other);
     PropertyFlags& operator&=(Enum flag);
 
-    PropertyFlags& operator+=(PropertyFlags other);
+    PropertyFlags& operator+=(const PropertyFlags& other);
     PropertyFlags& operator+=(Enum flag);
 
-    PropertyFlags& operator-=(PropertyFlags other);
+    PropertyFlags& operator-=(const PropertyFlags& other);
     PropertyFlags& operator-=(Enum flag);
 
-    PropertyFlags& operator<<=(PropertyFlags other);
+    PropertyFlags& operator<<=(const PropertyFlags& other);
     PropertyFlags& operator<<=(Enum flag);
 
-    PropertyFlags operator|(PropertyFlags other) const;
+    PropertyFlags operator|(const PropertyFlags& other) const;
     PropertyFlags operator|(Enum flag) const;
 
-    PropertyFlags operator&(PropertyFlags other) const;
+    PropertyFlags operator&(const PropertyFlags& other) const;
     PropertyFlags operator&(Enum flag) const;
 
-    PropertyFlags operator+(PropertyFlags other) const;
+    PropertyFlags operator+(const PropertyFlags& other) const;
     PropertyFlags operator+(Enum flag) const;
 
-    PropertyFlags operator-(PropertyFlags other) const;
+    PropertyFlags operator-(const PropertyFlags& other) const;
     PropertyFlags operator-(Enum flag) const;
 
-    PropertyFlags operator<<(PropertyFlags other) const;
+    PropertyFlags operator<<(const PropertyFlags& other) const;
     PropertyFlags operator<<(Enum flag) const;
 
     // NOTE: due to the nature of the compact storage of these property flags, and the fact that the upper bound of the
     // enum is not know, these operators will only perform their bitwise operations on the set of properties that have
     // been previously set
-    PropertyFlags& operator^=(PropertyFlags other);
+    PropertyFlags& operator^=(const PropertyFlags& other);
     PropertyFlags& operator^=(Enum flag);
-    PropertyFlags operator^(PropertyFlags other) const;
+    PropertyFlags operator^(const PropertyFlags& other) const;
     PropertyFlags operator^(Enum flag) const;
     PropertyFlags operator~() const;
 
@@ -146,7 +146,7 @@ template<typename Enum> inline void PropertyFlags<Enum>::setHasProperty(Enum fla
     }
 }
 
-template<typename Enum> inline bool PropertyFlags<Enum>::getHasProperty(Enum flag) {
+template<typename Enum> inline bool PropertyFlags<Enum>::getHasProperty(Enum flag) const {
     if (flag > _maxFlag) {
         return _trailingFlipped; // usually false
     }
@@ -253,7 +253,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator|=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator|=(const PropertyFlags& other) {
     _flags |= other._flags; 
     _maxFlag = std::max(_maxFlag, other._maxFlag); 
     _minFlag = std::min(_minFlag, other._minFlag); 
@@ -268,7 +268,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator&=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator&=(const PropertyFlags& other) {
     _flags &= other._flags; 
     shinkIfNeeded(); 
     return *this; 
@@ -281,7 +281,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator^=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator^=(const PropertyFlags& other) {
     _flags ^= other._flags; 
     shinkIfNeeded(); 
     return *this; 
@@ -294,7 +294,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator+=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator+=(const PropertyFlags& other) {
     for(int flag = (int)other.firstFlag(); flag <= (int)other.lastFlag(); flag++) {
         if (other.getHasProperty((Enum)flag)) {
             setHasProperty((Enum)flag, true);
@@ -308,7 +308,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator-=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator-=(const PropertyFlags& other) {
     for(int flag = (int)other.firstFlag(); flag <= (int)other.lastFlag(); flag++) {
         if (other.getHasProperty((Enum)flag)) {
             setHasProperty((Enum)flag, false);
@@ -322,7 +322,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator<<=(PropertyFlags other) {
+template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operator<<=(const PropertyFlags& other) {
     for(int flag = (int)other.firstFlag(); flag <= (int)other.lastFlag(); flag++) {
         if (other.getHasProperty((Enum)flag)) {
             setHasProperty((Enum)flag, true);
@@ -336,7 +336,7 @@ template<typename Enum> inline PropertyFlags<Enum>& PropertyFlags<Enum>::operato
     return *this; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator|(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator|(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result |= other; 
     return result; 
@@ -349,7 +349,7 @@ template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator
     return result; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator&(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator&(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result &= other; 
     return result; 
@@ -362,7 +362,7 @@ template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator
     return result; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator^(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator^(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result ^= other; 
     return result; 
@@ -375,7 +375,7 @@ template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator
     return result; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator+(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator+(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result += other; 
     return result; 
@@ -387,7 +387,7 @@ template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator
     return result; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator-(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator-(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result -= other; 
     return result; 
@@ -399,7 +399,7 @@ template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator
     return result; 
 }
 
-template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator<<(PropertyFlags other) const {
+template<typename Enum> inline PropertyFlags<Enum> PropertyFlags<Enum>::operator<<(const PropertyFlags& other) const {
     PropertyFlags result(*this); 
     result <<= other; 
     return result;