[2826] | 1 | //*******************************************************************
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| 2 | //glfont2.h -- Header for glfont2.cpp
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| 3 | //Copyright (c) 1998-2002 Brad Fish
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| 4 | //See glfont.html for terms of use
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| 5 | //May 14, 2002
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| 6 | //*******************************************************************
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| 7 |
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| 8 | #ifndef GLFONT2_H
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| 9 | #define GLFONT2_H
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| 10 |
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| 11 | //*******************************************************************
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| 12 | //GLFont Interface
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| 13 | //*******************************************************************
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| 14 |
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| 15 | //glFont namespace
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| 16 | namespace glfont
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| 17 | {
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| 18 | class GLFont;
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| 19 | }
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| 20 |
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| 21 | //glFont class
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| 22 | class glfont::GLFont
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| 23 | {
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| 24 | private:
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| 25 |
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| 26 | //glFont character structure
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| 27 | typedef struct
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| 28 | {
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| 29 | float dx, dy;
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| 30 | float tx1, ty1;
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| 31 | float tx2, ty2;
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| 32 | } GLFontChar;
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| 33 |
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| 34 | //glFont header structure
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| 35 | struct
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| 36 | {
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| 37 | int tex;
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| 38 | int tex_width, tex_height;
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| 39 | int start_char, end_char;
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| 40 | GLFontChar *chars;
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| 41 | } header;
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| 42 |
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| 43 | public:
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| 44 |
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| 45 | //Constructor
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| 46 | GLFont ();
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| 47 |
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| 48 | //Destructor
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| 49 | ~GLFont ();
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| 50 |
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| 51 | public:
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| 52 |
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| 53 | //Creates the glFont
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| 54 | bool Create (const char *file_name, int tex);
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| 55 | bool Create (const std::string &file_name, int tex);
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| 56 |
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| 57 | //Destroys the glFont
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| 58 | void Destroy (void);
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| 59 |
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| 60 | //Texture size retrieval methods
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| 61 | void GetTexSize (std::pair<int, int> *size);
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| 62 | int GetTexWidth (void);
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| 63 | int GetTexHeight (void);
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| 64 |
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| 65 | //Character interval retrieval methods
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| 66 | void GetCharInterval (std::pair<int, int> *interval);
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| 67 | int GetStartChar (void);
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| 68 | int GetEndChar (void);
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| 69 |
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| 70 | //Character size retrieval methods
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| 71 | void GetCharSize (int c, std::pair<int, int> *size);
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| 72 | int GetCharWidth (int c);
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| 73 | int GetCharHeight (int c);
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| 74 |
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| 75 | //Calculates the size in pixels of a character array
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| 76 | template<class T> void GetStringSize (const T *text,
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| 77 | std::pair<int, int> *size)
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| 78 | {
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| 79 | const T *i;
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| 80 | GLFontChar *glfont_char;
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| 81 | float width;
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| 82 |
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| 83 | //Height is the same for now...might change in future
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| 84 | size->second = (int)(header.chars[header.start_char]->dy *
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| 85 | header.tex_height);
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| 86 |
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| 87 | //Calculate width of string
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| 88 | width = 0.0F;
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| 89 | for (i = text; *i != (T)'\0'; i++)
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| 90 | {
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| 91 | //Make sure character is in range
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| 92 | if (*i < header.start_char || *i > header.end_char)
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| 93 | continue;
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| 94 |
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| 95 | //Get pointer to glFont character
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| 96 | glfont_char = &header.chars[*i - header.start_char];
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| 97 |
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| 98 | //Get width and height
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| 99 | width += glfont_char->dx * header.tex_width;
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| 100 | }
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| 101 |
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| 102 | //Save width
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| 103 | size->first = (int)width;
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| 104 | }
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| 105 |
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| 106 | //Template function to calculate size of a std::basic_string
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| 107 | template<class T> void GetStringSize (
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| 108 | const std::basic_string<T> &text, std::pair<int, int> *size)
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| 109 | {
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| 110 | unsigned int i;
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| 111 | T *c;
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| 112 | GLFontChar *glfont_char;
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| 113 | float width;
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| 114 |
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| 115 | //Height is the same for now...might change in future
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| 116 | size->second = (int)(header.chars[header.start_char]->dy *
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| 117 | header.tex_height);
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| 118 |
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| 119 | //Calculate width of string
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| 120 | width = 0.0F;
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| 121 | for (i = 0; i < text.size(); i++)
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| 122 | {
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| 123 | //Make sure character is in range
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| 124 | c = text[i];
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| 125 | if (c < header.start_char || c > header.end_char)
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| 126 | continue;
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| 127 |
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| 128 | //Get pointer to glFont character
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| 129 | glfont_char = &header.chars[c - header.start_char];
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| 130 |
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| 131 | //Get width and height
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| 132 | width += glfont_char->dx * header.tex_width;
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| 133 | }
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| 134 |
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| 135 | //Save width
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| 136 | size->first = (int)width;
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| 137 | }
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| 138 |
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| 139 | //Begins text output with this font
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| 140 | void Begin (void);
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| 141 |
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| 142 | //Template function to output a character array
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| 143 | template<class T> void DrawString (const T *text, float x,
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| 144 | float y)
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| 145 | {
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| 146 | const T *i;
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| 147 | GLFontChar *glfont_char;
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| 148 | float width, height;
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| 149 |
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| 150 | //Begin rendering quads
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| 151 | glBegin(GL_QUADS);
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| 152 |
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| 153 | //Loop through characters
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| 154 | for (i = text; *i != (T)'\0'; i++)
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| 155 | {
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| 156 | //Make sure character is in range
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| 157 | if (*i < header.start_char || *i > header.end_char)
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| 158 | continue;
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| 159 |
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| 160 | //Get pointer to glFont character
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| 161 | glfont_char = &header.chars[*i - header.start_char];
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| 162 |
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| 163 | //Get width and height
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| 164 | width = glfont_char->dx * header.tex_width;
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| 165 | height = glfont_char->dy * header.tex_height;
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| 166 |
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| 167 | //Specify vertices and texture coordinates
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| 168 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 169 | glVertex3f(x, y, 0.0F);
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| 170 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 171 | glVertex3f(x, y - height, 0.0F);
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| 172 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 173 | glVertex3f(x + width, y - height, 0.0F);
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| 174 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 175 | glVertex3f(x + width, y, 0.0F);
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| 176 |
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| 177 | //Move to next character
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| 178 | x += width;
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| 179 | }
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| 180 |
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| 181 | //Stop rendering quads
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| 182 | glEnd();
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| 183 | }
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| 184 |
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| 185 | //Template function to draw a std::basic_string
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| 186 | template<class T> void DrawString (
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| 187 | const std::basic_string<T> &text, float x, float y)
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| 188 | {
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| 189 | unsigned int i;
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| 190 | T c;
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| 191 | GLFontChar *glfont_char;
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| 192 | float width, height;
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| 193 |
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| 194 | //Begin rendering quads
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| 195 | glBegin(GL_QUADS);
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| 196 |
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| 197 | //Loop through characters
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| 198 | for (i = 0; i < text.size(); i++)
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| 199 | {
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| 200 | //Make sure character is in range
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| 201 | c = text[i];
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| 202 | if (c < header.start_char || c > header.end_char)
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| 203 | continue;
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| 204 |
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| 205 | //Get pointer to glFont character
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| 206 | glfont_char = &header.chars[c - header.start_char];
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| 207 |
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| 208 | //Get width and height
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| 209 | width = glfont_char->dx * header.tex_width;
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| 210 | height = glfont_char->dy * header.tex_height;
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| 211 |
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| 212 | //Specify vertices and texture coordinates
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| 213 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 214 | glVertex3f(x, y, 0.0F);
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| 215 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 216 | glVertex3f(x, y - height, 0.0F);
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| 217 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 218 | glVertex3f(x + width, y - height, 0.0F);
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| 219 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 220 | glVertex3f(x + width, y, 0.0F);
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| 221 |
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| 222 | //Move to next character
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| 223 | x += width;
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| 224 | }
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| 225 |
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| 226 | //Stop rendering quads
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| 227 | glEnd();
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| 228 | }
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| 229 |
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| 230 | //Template function to output a scaled character array
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| 231 | template<class T> void DrawString (const T *text, float scalar,
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| 232 | float x, float y)
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| 233 | {
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| 234 | const T *i;
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| 235 | GLFontChar *glfont_char;
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| 236 | float width, height;
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| 237 |
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| 238 | //Begin rendering quads
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| 239 | glBegin(GL_QUADS);
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| 240 |
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| 241 | //Loop through characters
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| 242 | for (i = text; *i != (T)'\0'; i++)
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| 243 | {
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| 244 | //Make sure character is in range
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| 245 | if (*i < header.start_char || *i > header.end_char)
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| 246 | continue;
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| 247 |
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| 248 | //Get pointer to glFont character
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| 249 | glfont_char = &header.chars[*i - header.start_char];
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| 250 |
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| 251 | //Get width and height
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| 252 | width = (glfont_char->dx * header.tex_width) * scalar;
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| 253 | height = (glfont_char->dy * header.tex_height) * scalar;
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| 254 |
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| 255 | //Specify vertices and texture coordinates
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| 256 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 257 | glVertex3f(x, y, 0.0F);
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| 258 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 259 | glVertex3f(x, y - height, 0.0F);
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| 260 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 261 | glVertex3f(x + width, y - height, 0.0F);
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| 262 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 263 | glVertex3f(x + width, y, 0.0F);
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| 264 |
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| 265 | //Move to next character
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| 266 | x += width;
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| 267 | }
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| 268 |
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| 269 | //Stop rendering quads
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| 270 | glEnd();
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| 271 | }
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| 272 |
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| 273 | //Template function to output a scaled std::basic_string
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| 274 | template<class T> void DrawString (
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| 275 | const std::basic_string<T> &text, float scalar, float x,
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| 276 | float y)
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| 277 | {
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| 278 | unsigned int i;
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| 279 | T c;
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| 280 | GLFontChar *glfont_char;
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| 281 | float width, height;
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| 282 |
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| 283 | //Begin rendering quads
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| 284 | glBegin(GL_QUADS);
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| 285 |
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| 286 | //Loop through characters
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| 287 | for (i = 0; i < text.size(); i++)
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| 288 | {
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| 289 | //Make sure character is in range
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| 290 | c = text[i];
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| 291 | if (c < header.start_char || c > header.end_char)
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| 292 | continue;
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| 293 |
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| 294 | //Get pointer to glFont character
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| 295 | glfont_char = &header.chars[c - header.start_char];
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| 296 |
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| 297 | //Get width and height
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| 298 | width = (glfont_char->dx * header.tex_width) * scalar;
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| 299 | height = (glfont_char->dy * header.tex_height) * scalar;
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| 300 |
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| 301 | //Specify vertices and texture coordinates
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| 302 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 303 | glVertex3f(x, y, 0.0F);
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| 304 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 305 | glVertex3f(x, y - height, 0.0F);
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| 306 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 307 | glVertex3f(x + width, y - height, 0.0F);
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| 308 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 309 | glVertex3f(x + width, y, 0.0F);
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| 310 |
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| 311 | //Move to next character
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| 312 | x += width;
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| 313 | }
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| 314 |
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| 315 | //Stop rendering quads
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| 316 | glEnd();
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| 317 | }
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| 318 |
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| 319 | //Template function to output a colored character array
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| 320 | template<class T> void DrawString (const T *text, float x,
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| 321 | float y, const float *top_color,
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| 322 | const float *bottom_color)
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| 323 | {
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| 324 | const T *i;
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| 325 | GLFontChar *glfont_char;
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| 326 | float width, height;
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| 327 |
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| 328 | //Begin rendering quads
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| 329 | glBegin(GL_QUADS);
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| 330 |
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| 331 | //Loop through characters
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| 332 | for (i = text; *i != '\0'; i++)
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| 333 | {
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| 334 | //Make sure character is in range
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| 335 | if (*i < header.start_char || *i > header.end_char)
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| 336 | continue;
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| 337 |
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| 338 | //Get pointer to glFont character
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| 339 | glfont_char = &header.chars[*i - header.start_char];
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| 340 |
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| 341 | //Get width and height
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| 342 | width = glfont_char->dx * header.tex_width;
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| 343 | height = glfont_char->dy * header.tex_height;
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| 344 |
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| 345 | //Specify colors, vertices, and texture coordinates
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| 346 | glColor3fv(top_color);
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| 347 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 348 | glVertex3f(x, y, 0.0F);
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| 349 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 350 | glVertex3f(x + width, y, 0.0F);
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| 351 | glColor3fv(bottom_color);
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| 352 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 353 | glVertex3f(x + width, y - height, 0.0F);
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| 354 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 355 | glVertex3f(x, y - height, 0.0F);
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| 356 |
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| 357 | //Move to next character
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| 358 | x += width;
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| 359 | }
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| 360 |
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| 361 | //Stop rendering quads
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| 362 | glEnd();
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| 363 | }
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| 364 |
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| 365 | //Template function to output a colored std::basic_string
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| 366 | template<class T> void DrawString (
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| 367 | const std::basic_string<T> &text, float x, float y,
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| 368 | const float *top_color, const float *bottom_color)
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| 369 | {
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| 370 | unsigned int i;
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| 371 | T c;
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| 372 | GLFontChar *glfont_char;
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| 373 | float width, height;
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| 374 |
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| 375 | //Begin rendering quads
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| 376 | glBegin(GL_QUADS);
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| 377 |
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| 378 | //Loop through characters
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| 379 | for (i = 0; i < text.size(); i++)
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| 380 | {
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| 381 | //Make sure character is in range
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| 382 | c = text[i];
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| 383 | if (c < header.start_char || c > header.end_char)
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| 384 | continue;
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| 385 |
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| 386 | //Get pointer to glFont character
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| 387 | glfont_char = &header.chars[c - header.start_char];
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| 388 |
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| 389 | //Get width and height
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| 390 | width = glfont_char->dx * header.tex_width;
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| 391 | height = glfont_char->dy * header.tex_height;
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| 392 |
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| 393 | //Specify colors, vertices, and texture coordinates
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| 394 | glColor3fv(top_color);
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| 395 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 396 | glVertex3f(x, y, 0.0F);
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| 397 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 398 | glVertex3f(x + width, y, 0.0F);
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| 399 | glColor3fv(bottom_color);
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| 400 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 401 | glVertex3f(x + width, y - height, 0.0F);
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| 402 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 403 | glVertex3f(x, y - height, 0.0F);
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| 404 |
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| 405 | //Move to next character
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| 406 | x += width;
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| 407 | }
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| 408 |
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| 409 | //Stop rendering quads
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| 410 | glEnd();
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| 411 | }
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| 412 |
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| 413 | //Template function to output a scaled, colored character array
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| 414 | template<class T> void DrawString (const T *text, float scalar,
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| 415 | float x, float y, const float *top_color,
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| 416 | const float *bottom_color)
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| 417 | {
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| 418 | const T *i;
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| 419 | GLFontChar *glfont_char;
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| 420 | float width, height;
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| 421 |
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| 422 | //Begin rendering quads
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| 423 | glBegin(GL_QUADS);
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| 424 |
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| 425 | //Loop through characters
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| 426 | for (i = text; *i != '\0'; i++)
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| 427 | {
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| 428 | //Make sure character is in range
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| 429 | if (*i < header.start_char || *i > header.end_char)
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| 430 | continue;
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| 431 |
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| 432 | //Get pointer to glFont character
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| 433 | glfont_char = &header.chars[*i - header.start_char];
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| 434 |
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| 435 | //Get width and height
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| 436 | width = (glfont_char->dx * header.tex_width) * scalar;
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| 437 | height = (glfont_char->dy * header.tex_height) * scalar;
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| 438 |
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| 439 | //Specify colors, vertices, and texture coordinates
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| 440 | glColor3fv(top_color);
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| 441 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
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| 442 | glVertex3f(x, y, 0.0F);
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| 443 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
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| 444 | glVertex3f(x + width, y, 0.0F);
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| 445 | glColor3fv(bottom_color);
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| 446 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
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| 447 | glVertex3f(x + width, y - height, 0.0F);
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| 448 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
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| 449 | glVertex3f(x, y - height, 0.0F);
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| 450 |
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| 451 | //Move to next character
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| 452 | x += width;
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| 453 | }
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| 454 |
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| 455 | //Stop rendering quads
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| 456 | glEnd();
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| 457 | }
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| 458 |
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| 459 | //Template function to output a scaled, colored std::basic_string
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| 460 | template<class T> void DrawString (
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| 461 | const std::basic_string<T> &text, float scalar, float x,
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| 462 | float y, const float *top_color, const float *bottom_color)
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| 463 | {
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| 464 | unsigned int i;
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| 465 | T c;
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| 466 | GLFontChar *glfont_char;
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| 467 | float width, height;
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| 468 |
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| 469 | //Begin rendering quads
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| 470 | glBegin(GL_QUADS);
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| 471 |
|
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| 472 | //Loop through characters
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| 473 | for (i = 0; i < text.size(); i++)
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| 474 | {
|
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| 475 | //Make sure character is in range
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| 476 | c = text[i];
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| 477 | if (c < header.start_char || c > header.end_char)
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| 478 | continue;
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| 479 |
|
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| 480 | //Get pointer to glFont character
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| 481 | glfont_char = &header.chars[c - header.start_char];
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| 482 |
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| 483 | //Get width and height
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| 484 | width = (glfont_char->dx * header.tex_width) * scalar;
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| 485 | height = (glfont_char->dy * header.tex_height) * scalar;
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| 486 |
|
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| 487 | //Specify colors, vertices, and texture coordinates
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| 488 | glColor3fv(top_color);
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| 489 | glTexCoord2f(glfont_char->tx1, glfont_char->ty1);
|
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| 490 | glVertex3f(x, y, 0.0F);
|
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| 491 | glTexCoord2f(glfont_char->tx2, glfont_char->ty1);
|
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| 492 | glVertex3f(x + width, y, 0.0F);
|
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| 493 | glColor3fv(bottom_color);
|
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| 494 | glTexCoord2f(glfont_char->tx2, glfont_char->ty2);
|
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| 495 | glVertex3f(x + width, y - height, 0.0F);
|
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| 496 | glTexCoord2f(glfont_char->tx1, glfont_char->ty2);
|
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| 497 | glVertex3f(x, y - height, 0.0F);
|
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| 498 |
|
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| 499 | //Move to next character
|
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| 500 | x += width;
|
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| 501 | }
|
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| 502 |
|
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| 503 | //Stop rendering quads
|
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| 504 | glEnd();
|
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| 505 | }
|
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| 506 | };
|
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| 507 |
|
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| 508 | //*******************************************************************
|
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| 509 |
|
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| 510 | #endif
|
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| 511 |
|
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| 512 | //End of file
|
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| 513 |
|
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