nsdfont/src/Decorator.cpp

   1 /*\r
   2  *      Kimikage NScripter Plugins Project\r
   3  *\r
   4  *      This software is distributed under a BSD-style license.\r
   5  *      See license.txt for more information.\r
   6  */\r
   7 \r
   8 #include "Decorator.h"\r
   9 #include <cmath>\r
  10 \r
  11 namespace nsdfont\r
  12 {\r
  13         Decorator::Decorator( void )\r
  14         {\r
  15                 face1 = Color( 0xFFFFFFFF );\r
  16         }\r
  17 \r
  18         Decorator::~Decorator( void )\r
  19         {\r
  20         }\r
  21 \r
  22         void Decorator::setFace( const Color color )\r
  23         {\r
  24                 face1 = color;\r
  25                 face2 = color;\r
  26         }\r
  27 \r
  28         void Decorator::setEdge( const double width, const Color color )\r
  29         {\r
  30                 //  \r
  31                 //     :\r
  32                 //   l : l   l2,2l\r
  33                 //   +-+-+---+---+\r
  34                 //   l : l1,1l2,1l\r
  35                 //   +-+-+---+---+---+\r
  36                 // --+0,0+1,0+2,0+3,0+---->\r
  37                 //   +-:-+---+---+---+\r
  38                 //   | : l   l   l   |\r
  39                 //     :\r
  40                 \r
  41                 // \83e\81[\83u\83\8b\8f\89\8aú\89»\r
  42                 // \90³\95û\8c`\82Å\82 \82é\82±\82Æ\82ð\91O\92ñ\r
  43                 const size_t tableSize = sizeof( edgePower ) / sizeof( edgePower[0] );\r
  44                 for( size_t j = 0; j < tableSize; ++j )\r
  45                 {\r
  46                         for( size_t i = 0; i < tableSize; ++i )\r
  47                         {\r
  48                                 edgePower[j][i] = 0;\r
  49                         }\r
  50                 }\r
  51 \r
  52                 if ( width <= 1e-20 )\r
  53                 {\r
  54                         edgeWidth = 0.0;\r
  55                         return;\r
  56                 }\r
  57 \r
  58                 edge1 = color;\r
  59                 exTop = exBottom = exLeft = exRight = static_cast<unsigned int>( std::ceil( edgeWidth ) );\r
  60 \r
  61                 const double r = width + rEqu; // \89~\82Ì\94¼\8ca\r
  62                 const double s = rPi * r * r; // \89~\82Ì\96Ê\90Ï\r
  63                 const double scale( edge1.getA() );\r
  64                 if ( r <= rSqrt0_5 ) // (0.5,0.5)\93\9e\92B\82Ü\82Å\r
  65                 {\r
  66                         // a0 = SQRT(r^2-0.5^2) * 2   + 2*r^2*(\r
  67                         //                                                  ASIN(0.5/r)-ACOS(0.5/r) \r
  68                         //                                                                      + 0.5*SIN(2*ASIN(0.5/r))-0.5*SIN(2*ACOS(0.5/r))\r
  69                         //                                            )\r
  70                         const double a0 = 1.0 - 4.333 * (r - rSqrt0_5) * (r - rSqrt0_5); //2\8e\9f\8bß\8e\97\r
  71                         const double a1 = 0.25 * (s - a0);\r
  72                         edgePower[0][0] = static_cast<int>( a0 * scale );\r
  73                         edgePower[1][0] = static_cast<int>( a1 * scale );\r
  74                         edgePower[1][1] = 0;\r
  75                         return;\r
  76                 }\r
  77                 if ( r <= 1.5 ) // (1.5,0.0)\93\9e\92B\82Ü\82Å\r
  78                 {\r
  79                         // b0 = 0.5*SQRT(r^2-0.5^2)-0.5+r^2*ASIN(0.5/r)\r
  80 \r
  81                         const double b0 = 1.0422359371 * r - 0.5878914747; //1\8e\9f\8bß\8e\97\r
  82                         const double b1 = 0.25 * (s - 1.0) - b0;\r
  83                         edgePower[0][0] = static_cast<int>( scale );\r
  84                         edgePower[1][0] = static_cast<int>( b0 * scale );\r
  85                         edgePower[1][1] = static_cast<int>( b1 * scale );\r
  86                         return;\r
  87                 }\r
  88                 \r
  89         }\r
  90 \r
  91         void Decorator::drawFace( int x, int y, ArgbBitmap &bmp, const Glyph &glyph ) const\r
  92         {\r
  93                 if ( glyph.getBufferSize() <= 0 ) return;\r
  94 \r
  95                 drawCoreSimple( x, y, bmp, glyph, face1 );\r
  96         }\r
  97 \r
  98         void Decorator::drawCoreSimple( int x, int y, ArgbBitmap &bmp, const Glyph &glyph, const Color color ) const\r
  99         {\r
 100                 // \8a®\91S\82É\93§\96¾\82È\82ç\95`\89æ\82µ\82È\82¢\r
 101                 if ( color.getA() == 0 ) return;\r
 102 \r
 103                 x += exLeft;\r
 104                 y += exTop;\r
 105                 \r
 106                 int width, height;\r
 107                 unsigned char *src = clip( x, y, width, height, bmp, glyph );\r
 108 \r
 109                 for( int j = 0; j < height; ++j )\r
 110                 {\r
 111                         ArgbArray dest = bmp.getArray( x, y + j );\r
 112                         for( int i = 0; i < width; ++i )\r
 113                         {\r
 114                                 if ( src[i] == 0 ) continue;\r
 115                                 const Color face( color.getArgb(), blend.mul( color.getA(), src[i] ) );\r
 116                                 dest[i] = blend.merge( dest[i], face );\r
 117                         }\r
 118                         src += glyph.getPitch();\r
 119                 }\r
 120         }\r
 121 \r
 122         void Decorator::drawEdge( int x, int y, ArgbBitmap &bmp, const Glyph &glyph ) const\r
 123         {\r
 124                 if ( glyph.getBufferSize() <= 0 ) return;\r
 125 \r
 126                 const Color c00( edge1.getArgb(), edgePower[0][0] );\r
 127                 const Color c10( edge1.getArgb(), edgePower[1][0] );\r
 128                 const Color c11( edge1.getArgb(), edgePower[1][1] );\r
 129 \r
 130                 drawCoreSimple( x-1, y-1, bmp, glyph, c11 ); // \8d¶\8fã\r
 131                 drawCoreSimple( x+0, y-1, bmp, glyph, c10 ); // \92\86\8fã\r
 132                 drawCoreSimple( x+1, y-1, bmp, glyph, c11 ); // \89E\8fã\r
 133                 drawCoreSimple( x-1, y+0, bmp, glyph, c10 ); // \8d¶\92\86\r
 134                 drawCoreSimple( x+0, y+0, bmp, glyph, c00 ); // \92\86\92\86\r
 135                 drawCoreSimple( x+1, y+0, bmp, glyph, c10 ); // \89E\92\86\r
 136                 drawCoreSimple( x-1, y+1, bmp, glyph, c11 ); // \8d¶\89º\r
 137                 drawCoreSimple( x+0, y+1, bmp, glyph, c10 ); // \92\86\89º\r
 138                 drawCoreSimple( x+1, y+1, bmp, glyph, c11 ); // \89E\89º\r
 139                 if ( edgePower[2][0] > 0 )\r
 140                 {\r
 141                         \r
 142                 }\r
 143                 return;\r
 144         }\r
 145 \r
 146         unsigned char *Decorator::clip( int &x, int &y, int &width, int &height, \r
 147                                         const ArgbBitmap &bmp, const Glyph&glyph ) const\r
 148         {\r
 149                 width = glyph.getWidth();\r
 150                 height = glyph.getHeight();\r
 151                 unsigned char *src = glyph.getBuffer();\r
 152 \r
 153                 if ( x < 0 ) //(\8d¶\82É\82Í\82Ý\8fo\82Ä\82¢\82é)\r
 154                 {\r
 155                         width += x;\r
 156                         src -= x;\r
 157                         x = 0;\r
 158                 }\r
 159                 if ( y < 0 ) //(\8fã\82É\82Í\82Ý\8fo\82Ä\82¢\82é)\r
 160                 {\r
 161                         height += y;\r
 162                         src -= y * glyph.getPitch();\r
 163                         y = 0;\r
 164                 }\r
 165                 if ( x + width > bmp.getWidth() ) //(\89E\82É\82Í\82Ý\8fo\82Ä\82¢\82é)\r
 166                 {\r
 167                         width = bmp.getWidth() - x;\r
 168                 }\r
 169                 if ( y + height > bmp.getHeight() ) //(\89º\82É\82Í\82Ý\8fo\82Ä\82¢\82é)\r
 170                 {\r
 171                         height = bmp.getHeight() - y;\r
 172                 }\r
 173                 return src;\r
 174         }\r
 175 \r
 176 \r
 177         const double Decorator::rPi( 3.14159265358979323846 ); // pi\r
 178         const double Decorator::rEqu( 0.564189583547756286948 ); // sqrt( 1 / pi )\r
 179         const double Decorator::rSqrt0_5( 0.7071067811865475244 ); // sqrt( 0.5 )\r
 180 }\r