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Changeset 4458 in orxonox.OLD for orxonox/trunk


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Timestamp:
Jun 1, 2005, 11:51:44 PM (19 years ago)
Author:
bensch
Message:

orxonox/trunk: graphicsEngine and TextEngine documented

Location:
orxonox/trunk/src/lib/graphics
Files:
4 edited

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Removed
  • orxonox/trunk/src/lib/graphics/graphics_engine.cc

    r4374 r4458  
    165165}
    166166
     167/**
     168   \brief sets Fullscreen mode
     169   \param fullscreen true if fullscreen, false if windowed
     170*/
    167171void GraphicsEngine::setFullscreen(bool fullscreen)
    168172{
     
    171175}
    172176
     177/**
     178   \brief sets the background color
     179   \param red the red part of the background
     180   \param blue the blue part of the background
     181   \param green the green part of the background
     182   \param alpha the alpha part of the background
     183*/
    173184void GraphicsEngine::setBackgroundColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
    174185{
     
    290301}
    291302
    292 
     303/**
     304   \brief ticks the Text
     305   \param dt the time passed
     306*/
    293307void GraphicsEngine::tick(float dt)
    294308{
    295         if( unlikely(this->bDisplayFPS))
    296         {
    297           this->currentFPS = 1.0/dt;
     309  if( unlikely(this->bDisplayFPS))
     310    {
     311      this->currentFPS = 1.0/dt;
    298312      if( unlikely(this->currentFPS > this->maxFPS)) this->maxFPS = this->currentFPS;
    299           if( unlikely(this->currentFPS < this->minFPS)) this->minFPS = this->currentFPS;
    300          
    301           char tmpChar1[20];
    302           sprintf(tmpChar1, "Current:  %4.0f", this->currentFPS);
    303           this->geTextCFPS->setText(tmpChar1);
    304           char tmpChar2[20];
    305           sprintf(tmpChar2, "Max:    %4.0f", this->maxFPS);
    306           this->geTextMaxFPS->setText(tmpChar2);
    307           char tmpChar3[20];
    308           sprintf(tmpChar3, "Min:    %4.0f", this->minFPS);
    309           this->geTextMinFPS->setText(tmpChar3);
    310         }
    311 }
    312  
     313      if( unlikely(this->currentFPS < this->minFPS)) this->minFPS = this->currentFPS;
     314     
     315      char tmpChar1[20];
     316      sprintf(tmpChar1, "Current:  %4.0f", this->currentFPS);
     317      this->geTextCFPS->setText(tmpChar1);
     318      char tmpChar2[20];
     319      sprintf(tmpChar2, "Max:    %4.0f", this->maxFPS);
     320      this->geTextMaxFPS->setText(tmpChar2);
     321      char tmpChar3[20];
     322      sprintf(tmpChar3, "Min:    %4.0f", this->minFPS);
     323      this->geTextMinFPS->setText(tmpChar3);
     324    }
     325}
     326 
     327/**
     328   \brief displays the Frames per second
     329   \param display if the text should be displayed
     330
     331   \todo this is dangerous
     332*/
    313333void GraphicsEngine::displayFPS(bool display)
    314334{
    315         if( display)
    316         {
    317                 this->geTextCFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
    318                 this->geTextCFPS->setAlignment(TEXT_ALIGN_LEFT);
    319                 this->geTextCFPS->setPosition(5, 500);
    320                 this->geTextMaxFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
    321                 this->geTextMaxFPS->setAlignment(TEXT_ALIGN_LEFT);
    322                 this->geTextMaxFPS->setPosition(5, 530);
    323                 this->geTextMinFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
    324                 this->geTextMinFPS->setAlignment(TEXT_ALIGN_LEFT);
    325                 this->geTextMinFPS->setPosition(5, 560);       
    326         }
    327         this->bDisplayFPS = display;
    328 }
    329 
    330  
     335  if( display)
     336    {
     337      this->geTextCFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
     338      this->geTextCFPS->setAlignment(TEXT_ALIGN_LEFT);
     339      this->geTextCFPS->setPosition(5, 500);
     340      this->geTextMaxFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
     341      this->geTextMaxFPS->setAlignment(TEXT_ALIGN_LEFT);
     342      this->geTextMaxFPS->setPosition(5, 530);
     343      this->geTextMinFPS = TextEngine::getInstance()->createText("fonts/druid.ttf", 35, TEXT_DYNAMIC, 0, 255, 0);
     344      this->geTextMinFPS->setAlignment(TEXT_ALIGN_LEFT);
     345      this->geTextMinFPS->setPosition(5, 560); 
     346    }
     347  this->bDisplayFPS = display;
     348}
     349
     350 
  • orxonox/trunk/src/lib/graphics/graphics_engine.h

    r4381 r4458  
    1818class Text;
    1919
    20 
     20//! class to handle graphics
     21/**
     22   handles graphical SDL-initialisation, textures, resolutions, and so on
     23*/   
    2124class GraphicsEngine : public BaseObject
    2225{
     
    3235
    3336  /** \returns the x resolution */
    34   inline int getResolutionX(void) {return this->resolutionX;}
     37  inline int getResolutionX(void) const {return this->resolutionX;}
    3538  /** \returns the y resolution */
    36   inline int getResolutionY(void) {return this->resolutionY;}
     39  inline int getResolutionY(void) const {return this->resolutionY;}
    3740  /** \returns the Bits Per Pixel */
    38   inline int getbbp(void) {return this->bitsPerPixel;}
     41  inline int getbbp(void) const {return this->bitsPerPixel;}
    3942  int resolutionChanged(SDL_ResizeEvent* resizeInfo);
    4043  void listModes(void);
     
    5861  static GraphicsEngine* singletonRef;
    5962
     63 private:
     64  SDL_Surface*   screen;          //!< the screen we draw to
     65  int            resolutionX;     //!< the X-resoultion of the screen
     66  int            resolutionY;     //!< the Y-resolution of the screen
     67  int            bitsPerPixel;    //!< the bits per pixels of the screen
     68  bool           fullscreen;      //!< if we are in fullscreen mode
     69  Uint32         videoFlags;      //!< flags for video
     70  SDL_Rect**     videoModes;      //!< list of resolutions
     71 
     72  bool           bDisplayFPS;     //!< is true if the fps should be displayed
     73  float          currentFPS;      //!< the current frame rate: frames per seconds
     74  float          maxFPS;          //!< maximal frame rate we ever got since start of the game
     75  float          minFPS;          //!< minimal frame rate we ever got since start
    6076
    61   SDL_Surface* screen;
    62   int resolutionX;
    63   int resolutionY;
    64   int bitsPerPixel;
    65   bool fullscreen;
    66   Uint32 videoFlags;
    67  
    68   bool bDisplayFPS;  //!< is true if the fps should be displayed
    69   float currentFPS;  //!< the current frame rate: frames per seconds
    70   float maxFPS;      //!< maximal frame rate we ever got since start of the game
    71   float minFPS;      //!< minimal frame rate we ever got since start
     77  Text*          geTextCFPS;      //!< Text for the current FPS
     78  Text*          geTextMaxFPS;    //!< Text for the max FPS
     79  Text*          geTextMinFPS;    //!< Text for the min FPS
    7280
    73   Text* geTextCFPS;
    74   Text* geTextMaxFPS;
    75   Text* geTextMinFPS;
    76 
    77   SDL_Rect **videoModes;
    7881};
    7982
  • orxonox/trunk/src/lib/graphics/text_engine.cc

    r4320 r4458  
    7676}
    7777
    78 
     78/**
     79   \brief tells the Text, that it should folow a PNode
     80   \param bindNode: the node to bind this text to
     81*/
    7982void Text::setBindNode(PNode* bindNode)
    8083{
     
    277280
    278281////////////
     282/// UTIL ///
     283////////////
     284/**
     285   \brief Loads a Font from an SDL_surface into a texture.
     286   \param surface The surface to make the texture of
     287   \param texCoord The texture coordinates of the 4 corners of the texture
     288   \returns the ID of the texture
     289*/
     290GLuint Text::loadTexture(SDL_Surface *surface, TexCoord* texCoord)
     291{
     292  GLuint texture;
     293  int w, h;
     294  SDL_Surface *image;
     295  SDL_Rect area;
     296  Uint32 saved_flags;
     297  Uint8  saved_alpha;
     298 
     299  /* Use the surface width and height expanded to powers of 2 */
     300  w = powerOfTwo(surface->w);
     301  h = powerOfTwo(surface->h);
     302  if (texCoord)
     303    {
     304      texCoord->minU = 0.0f;
     305      texCoord->minV = 0.0f;
     306      texCoord->maxU = (GLfloat)surface->w / w;
     307      texCoord->maxV = (GLfloat)surface->h / h;
     308    }
     309  image = SDL_CreateRGBSurface(SDL_SWSURFACE,
     310                               w, h,
     311                               32,
     312#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
     313                               0x000000FF,
     314                               0x0000FF00,
     315                               0x00FF0000,
     316                               0xFF000000
     317#else
     318                               0xFF000000,
     319                               0x00FF0000,
     320                               0x0000FF00,
     321                               0x000000FF
     322#endif
     323                               );
     324  if ( image == NULL ) {
     325    return 0;
     326  }
     327 
     328  /* Save the alpha blending attributes */
     329  saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK);
     330  saved_alpha = surface->format->alpha;
     331  if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
     332    SDL_SetAlpha(surface, 0, 0);
     333  }
     334 
     335  /* Copy the surface into the GL texture image */
     336  area.x = 0;
     337  area.y = 0;
     338  area.w = surface->w;
     339  area.h = surface->h;
     340  SDL_BlitSurface(surface, &area, image, &area);
     341 
     342  /* Restore the alpha blending attributes */
     343  if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
     344    SDL_SetAlpha(surface, saved_flags, saved_alpha);
     345  }
     346 
     347  /* Create an OpenGL texture for the image */
     348  glGenTextures(1, &texture);
     349  glBindTexture(GL_TEXTURE_2D, texture);
     350  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     351  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     352  glTexImage2D(GL_TEXTURE_2D,
     353               0,
     354               GL_RGBA,
     355               w, h,
     356               0,
     357               GL_RGBA,
     358               GL_UNSIGNED_BYTE,
     359               image->pixels);
     360  SDL_FreeSurface(image); /* No longer needed */
     361 
     362  return texture;
     363}
     364
     365/**
     366   \brief Quick utility function for texture creation
     367   \param input an integer
     368   \returns the next bigger 2^n-integer than input
     369*/
     370int Text::powerOfTwo(int input)
     371{
     372  int value = 1;
     373 
     374  while ( value < input ) {
     375    value <<= 1;
     376  }
     377  return value;
     378}
     379
     380
     381////////////
    279382/// FONT ///
    280383////////////
     
    358461   i: italic, b: bold, u, underline
    359462*/
    360 void Font::setStyle(char* renderStyle)
     463void Font::setStyle(const char* renderStyle)
    361464{
    362465  this->renderStyle = TTF_STYLE_NORMAL;
     
    690793}
    691794
    692 ////////////
    693 /// UTIL ///
    694 ////////////
    695 /**
    696    \brief Loads a Font from an SDL_surface into a texture.
    697    \param surface The surface to make the texture of
    698    \param texCoord The texture coordinates of the 4 corners of the texture
    699    \returns the ID of the texture
    700 */
    701 GLuint loadTexture(SDL_Surface *surface, TexCoord* texCoord)
    702 {
    703   GLuint texture;
    704   int w, h;
    705   SDL_Surface *image;
    706   SDL_Rect area;
    707   Uint32 saved_flags;
    708   Uint8  saved_alpha;
    709  
    710   /* Use the surface width and height expanded to powers of 2 */
    711   w = powerOfTwo(surface->w);
    712   h = powerOfTwo(surface->h);
    713   if (texCoord)
    714     {
    715       texCoord->minU = 0.0f;
    716       texCoord->minV = 0.0f;
    717       texCoord->maxU = (GLfloat)surface->w / w;
    718       texCoord->maxV = (GLfloat)surface->h / h;
    719     }
    720   image = SDL_CreateRGBSurface(SDL_SWSURFACE,
    721                                w, h,
    722                                32,
    723 #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
    724                                0x000000FF,
    725                                0x0000FF00,
    726                                0x00FF0000,
    727                                0xFF000000
    728 #else
    729                                0xFF000000,
    730                                0x00FF0000,
    731                                0x0000FF00,
    732                                0x000000FF
    733 #endif
    734                                );
    735   if ( image == NULL ) {
    736     return 0;
    737   }
    738  
    739   /* Save the alpha blending attributes */
    740   saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK);
    741   saved_alpha = surface->format->alpha;
    742   if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
    743     SDL_SetAlpha(surface, 0, 0);
    744   }
    745  
    746   /* Copy the surface into the GL texture image */
    747   area.x = 0;
    748   area.y = 0;
    749   area.w = surface->w;
    750   area.h = surface->h;
    751   SDL_BlitSurface(surface, &area, image, &area);
    752  
    753   /* Restore the alpha blending attributes */
    754   if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
    755     SDL_SetAlpha(surface, saved_flags, saved_alpha);
    756   }
    757  
    758   /* Create an OpenGL texture for the image */
    759   glGenTextures(1, &texture);
    760   glBindTexture(GL_TEXTURE_2D, texture);
    761   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    762   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    763   glTexImage2D(GL_TEXTURE_2D,
    764                0,
    765                GL_RGBA,
    766                w, h,
    767                0,
    768                GL_RGBA,
    769                GL_UNSIGNED_BYTE,
    770                image->pixels);
    771   SDL_FreeSurface(image); /* No longer needed */
    772  
    773   return texture;
    774 }
    775 
    776 /**
    777    \brief Quick utility function for texture creation
    778    \param input an integer
    779    \returns the next bigger 2^n-integer than input
    780 */
    781 int powerOfTwo(int input)
    782 {
    783   int value = 1;
    784  
    785   while ( value < input ) {
    786     value <<= 1;
    787   }
    788   return value;
    789 }
    790 
    791 
    792 
    793 
    794 
    795795
    796796///////////////////
     
    893893/**
    894894   \brief removes a Text from the List
    895    \param the text to delete
     895   \param text: the text to delete
    896896
    897897   this only ereases allocated memory, and removes the text
  • orxonox/trunk/src/lib/graphics/text_engine.h

    r3845 r4458  
    6060struct TexCoord
    6161{
    62   float minU;                      //!< The minimum U-Coordinate
    63   float maxU;                      //!< The maximum U-Coordinate
    64   float minV;                      //!< The minimum V-Coordinate
    65   float maxV;                      //!< The maximum V-Coordinate
     62  float    minU;              //!< The minimum U-Coordinate
     63  float    maxU;              //!< The maximum U-Coordinate
     64  float    minV;              //!< The minimum V-Coordinate
     65  float    maxV;              //!< The maximum V-Coordinate
    6666};
    6767
     
    7373{
    7474  // Glyph-specific (size and so on)
    75   Uint16 character;              //!< The character
    76   int minX;                      //!< The minimum distance from the origin in X
    77   int maxX;                      //!< The maximum distance from the origin in X
    78   int minY;                      //!< The minimum distance from the origin in Y
    79   int maxY;                      //!< The maximum distance from the origin in Y
    80   int width;                     //!< The width of the Glyph
    81   int height;                    //!< The height of the Glyph
    82   int bearingX;                  //!< How much is right of the Origin
    83   int bearingY;                  //!< How much is above the Origin
    84   int advance;                   //!< How big a Glyph would be in monospace-mode
     75  Uint16   character;         //!< The character
     76  int      minX;              //!< The minimum distance from the origin in X
     77  int      maxX;              //!< The maximum distance from the origin in X
     78  int      minY;              //!< The minimum distance from the origin in Y
     79  int      maxY;              //!< The maximum distance from the origin in Y
     80  int      width;             //!< The width of the Glyph
     81  int      height;            //!< The height of the Glyph
     82  int      bearingX;          //!< How much is right of the Origin
     83  int      bearingY;          //!< How much is above the Origin
     84  int      advance;           //!< How big a Glyph would be in monospace-mode
    8585 
    8686  // OpenGL-specific
    8787  //  TexCoord texCoord;         //!< A Texture Coordinate for this glyph.
    88   GLuint displayList;            //!< DiplayList to render this Glyph.
     88  GLuint displayList;         //!< DiplayList to render this Glyph.
    8989};
    9090
     
    110110  // Static Text
    111111  void setColor(Uint8 r, Uint8 g, Uint8 b);
    112   void setStyle(char* renderStyle);
    113112
    114113  void createTexture();
     
    120119 private:
    121120  Text(Font* font, int type = TEXT_DYNAMIC);
    122 
    123   Font* font;
    124 
    125   int type;                      //!< The type of this Font.
    126   char* text;                    //!< The text to display
    127   SDL_Color color;               //!< The color of the font.
    128   TEXT_ALIGNMENT alignment;      //!< The aignment of the text.
    129   float blending;                //!< The blending intensity.
     121 
     122  static GLuint loadTexture(SDL_Surface* surface, TexCoord* texCoord);
     123  static int powerOfTwo(int input);
     124
     125 private:
     126  Font*             font;           //!< Font of this text
     127
     128  int               type;           //!< The type of this Font.
     129  char*             text;           //!< The text to display
     130  SDL_Color         color;          //!< The color of the font.
     131  TEXT_ALIGNMENT    alignment;      //!< The aignment of the text.
     132  float             blending;       //!< The blending intensity.
     133
    130134  // placement in openGL
    131   GLuint texture;                //!< A GL-texture to hold the text
    132   TexCoord texCoord;             //!< Texture-coordinates \todo fix this to have a struct
    133   SDL_Rect posSize;              //!< An SDL-Rectangle representing the position and size of the Text on the screen.
    134  
    135   PNode* bindNode;               //!< A node the Text is bind to. (if NULL thr node will not be bound to anything.)
     135  GLuint            texture;        //!< A GL-texture to hold the text
     136  TexCoord          texCoord;       //!< Texture-coordinates \todo fix this to have a struct
     137  SDL_Rect          posSize;        //!< An SDL-Rectangle representing the position and size of the Text on the screen.
     138 
     139  PNode*            bindNode;       //!< A node the Text is bind to. (if NULL thr node will not be bound to anything.)
    136140};
    137141
     
    143147{
    144148  friend class Text;
     149
    145150 public:
    146   Font(const char* fontFile, unsigned int fontSize = FONT_DEFAULT_SIZE,
    147        Uint8 r = FONT_DEFAULT_COLOR_R, Uint8 g = FONT_DEFAULT_COLOR_G, Uint8 b = FONT_DEFAULT_COLOR_B);
     151  Font(const char* fontFile,
     152       unsigned int fontSize = FONT_DEFAULT_SIZE,
     153       Uint8 r = FONT_DEFAULT_COLOR_R,
     154       Uint8 g = FONT_DEFAULT_COLOR_G,
     155       Uint8 b = FONT_DEFAULT_COLOR_B);
     156
    148157  virtual ~Font();
    149158
     
    152161  void setSize(unsigned int fontSize);
    153162  void setFastColor(Uint8 r, Uint8 g, Uint8 b);
    154   void setStyle(char* renderStyle);
    155 
    156   inline Glyph** getGlyphArray(void) {return glyphArray;}
    157   inline GLuint getFastTextureID(void) {return fastTextureID;}
    158  
    159  
    160  private:
    161   // general purpose
    162   GLdouble projMat[16];             //!< The Projection Matrix
    163 
    164   // information about the Font
    165   TTF_Font* font;                   //!< The font we use for this.
    166   char* fontFile;                   //!< The fontfile from whitch the font was loaded.
    167   unsigned int fontSize;            //!< The size of the font in pixels. each Font has one size.
    168   int renderStyle;                  //!< The Renderstyle
    169  
    170   Glyph** glyphArray;               //!< An Array of all the Glyphs stored in the Array of Glyphs.
    171   GLuint fastTextureID;             //!< The fast textureID.
    172   SDL_Color fastColor;              //!< A Color for the fast Texture.
    173 
    174   tList<Text>* textList;
    175 
     163  void setStyle(const char* renderStyle);
     164
     165  /** \returns a Pointer to the Array of Glyphs */
     166  inline Glyph** getGlyphArray(void) const {return glyphArray;}
     167  /** \returns the texture to the fast-texture */
     168  inline GLuint getFastTextureID(void) const {return fastTextureID;}
     169 
     170 private:
    176171  int getMaxHeight(void);
    177172  int getMaxAscent(void);
     
    186181  void debug(void);
    187182
    188 };
    189 GLuint loadTexture(SDL_Surface* surface, TexCoord* texCoord);
    190 int powerOfTwo(int input);
    191 
     183 private:
     184  // general purpose
     185  GLdouble      projMat[16];         //!< The Projection Matrix
     186
     187  // information about the Font
     188  TTF_Font*     font;                //!< The font we use for this.
     189  char*         fontFile;            //!< The fontfile from whitch the font was loaded.
     190  unsigned int  fontSize;            //!< The size of the font in pixels. each Font has one size.
     191  int           renderStyle;         //!< The Renderstyle
     192 
     193  Glyph**       glyphArray;          //!< An Array of all the Glyphs stored in the Array of Glyphs.
     194  GLuint        fastTextureID;       //!< The fast textureID.
     195  SDL_Color     fastColor;           //!< A Color for the fast Texture.
     196
     197  tList<Text>*  textList;            //!< A list of texts this Font is mapped to.
     198};
    192199
    193200///////////////////
     
    224231  static bool checkVersion(void);
    225232
    226 
     233 private:
    227234  //  tList<Font>* fontList;
    228   tList<Text>* textList;
     235  tList<Text>*       textList;      //!< a list of all texts of the textEngine
    229236
    230237};
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