Mercurial > projects > ldc
annotate demos/qd.d @ 359:926f65e39246 trunk
[svn r380] Improve complex number support.
author | ChristianK |
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date | Mon, 14 Jul 2008 17:22:43 +0200 |
parents | f869c636a113 |
children | 22a56b65872b |
rev | line source |
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73 | 1 module qd; |
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2 |
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3 extern(C) { |
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4 struct SDL_Rect { |
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5 short x, y; |
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6 ushort w, h; |
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7 } |
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8 struct SDL_PixelFormat { |
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9 //SDL_Palette *palette; |
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10 void *palette; |
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11 ubyte BitsPerPixel, BytesPerPixel, Rloss, Gloss, Bloss, Aloss, Rshift, Gshift, Bshift, Ashift; |
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12 uint Rmask, Gmask, Bmask, Amask, colorkey; ubyte alpha; |
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13 } |
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14 struct SDL_Surface { |
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15 uint flags; |
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16 SDL_PixelFormat *format; |
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17 int w, h; |
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18 ushort pitch; |
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19 void *pixels; |
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20 int offset; |
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21 void *hwdata; |
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22 SDL_Rect clip_rect; |
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23 uint unused; |
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24 uint locked; |
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25 void *map; |
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26 uint format_version; |
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27 int refcount; |
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28 } |
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29 uint SDL_MapRGBA(SDL_PixelFormat *format, ubyte r, ubyte g, ubyte b, ubyte a); |
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30 void SDL_GetRGBA(uint pixel, SDL_PixelFormat *fmt, ubyte *r, ubyte *g, ubyte *b, ubyte *a); |
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31 int SDL_LockSurface(SDL_Surface *); |
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32 void SDL_UnlockSurface(SDL_Surface *); |
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33 SDL_Surface * SDL_SetVideoMode(int width, int height, int bpp, uint flags); |
73 | 34 SDL_Surface *SDL_CreateRGBSurface(uint flags, int width, int height, int depth, uint Rmask=0, uint Gmask=0, uint Bmask=0, uint Amask=0); |
41
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35 int SDL_Flip(SDL_Surface *); |
73 | 36 void SDL_UpdateRect (SDL_Surface *screen, int x, int y, uint w, uint h); |
37 int SDL_UpperBlit(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect); | |
38 alias SDL_UpperBlit SDL_BlitSurface; | |
39 int SDL_SetAlpha(SDL_Surface *surface, uint flags, ubyte alpha); | |
40 int SDL_SetColorKey(SDL_Surface *surface, uint flag, uint key); | |
41 int SDL_FillRect(SDL_Surface *dst, SDL_Rect *dstrect, uint color); | |
41
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42 const uint SDL_SWSURFACE=0; |
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43 const uint SDL_HWSURFACE=1; |
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44 const uint SDL_DOUBLEBUF=0x40000000; |
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45 const uint SDL_FULLSCREEN=0x80000000; |
73 | 46 const uint SDL_SRCALPHA=0x00010000; |
47 const uint SDL_SRCCOLORKEY=0x00001000; | |
48 void SDL_Delay(uint ms); | |
49 uint SDL_GetTicks(); | |
50 | |
51 enum SDLKey { | |
52 Unknown = 0, First = 0, | |
53 Escape = 27, | |
54 LCtrl = 306, | |
55 } | |
56 enum SDLMod { | |
57 KMOD_NONE = 0x0000, | |
58 KMOD_LSHIFT= 0x0001, KMOD_RSHIFT= 0x0002, | |
59 KMOD_LCTRL = 0x0040, KMOD_RCTRL = 0x0080, KMOD_CTRL = 0x00C0, | |
60 KMOD_LALT = 0x0100, KMOD_RALT = 0x0200, KMOD_ALT = 0x0300, | |
61 KMOD_LMETA = 0x0400, KMOD_RMETA = 0x0800, | |
62 KMOD_NUM = 0x1000, KMOD_CAPS = 0x2000, KMOD_MODE = 0x4000, | |
63 KMOD_RESERVED = 0x8000 | |
64 }; | |
65 | |
66 struct SDL_keysym { ubyte scancode; SDLKey sym; SDLMod mod; ushort unicode; } | |
67 enum SDL_EventType : ubyte { | |
68 NoEvent=0, Active, KeyDown, KeyUp, | |
69 MouseMotion, MouseButtonDown, MouseButtonUp, | |
70 JoyAxisMotion, JoyBallMotion, JoyHatMotion, JoyButtonDown, JoyButtonUp, | |
71 Quit, SysWMEvent | |
72 } | |
73 union SDL_Event { | |
74 SDL_EventType type; | |
75 struct Active { SDL_EventType type, gain, state; }; Active active; | |
76 struct Key { SDL_EventType type, which, state; SDL_keysym keysym; }; Key key; | |
77 struct Motion { SDL_EventType type, which, state; ushort x, y; short xrel, yrel; }; Motion motion; | |
78 struct Button { SDL_EventType type, which, button, state; ushort x, y; }; Button button; | |
79 struct Jaxis { SDL_EventType type, which, axis; short value; }; Jaxis jaxis; | |
80 struct Jball { SDL_EventType type, which, ball; short xrel, yrel; }; Jball jball; | |
81 struct Jhat { SDL_EventType type, which, hat, value; }; Jhat jhat; | |
82 struct Jbutton { SDL_EventType type, which, button, state; }; Jbutton jbutton; | |
83 struct Resize { SDL_EventType type; int w, h; }; Resize resize; | |
84 struct Expose { SDL_EventType type; }; Expose expose; | |
85 struct Quit { SDL_EventType type; }; Quit quit; | |
86 struct User { SDL_EventType type; int code; void *data1, data2; }; User user; | |
87 struct Syswm { SDL_EventType type; void *msg; }; Syswm syswm; | |
88 } | |
89 | |
90 int SDL_PollEvent(SDL_Event *event); | |
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91 } |
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92 |
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93 SDL_Surface *display; |
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94 |
73 | 95 void putpixel32(int x, int y, ubyte[4] col) { |
96 uint *bufp = cast(uint *)display.pixels + y*display.pitch/4 + x; | |
97 *bufp = SDL_MapRGBA(display.format, col[0], col[1], col[2], col[3]); | |
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98 } |
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99 |
73 | 100 void putpixel32(int x, int y, ubyte[3] col) { |
101 uint *bufp = cast(uint *)display.pixels + y*display.pitch/4 + x; | |
102 *bufp = SDL_MapRGBA(display.format, col[0], col[1], col[2], 0); | |
103 } | |
104 | |
105 void getpixel32(int x, int y, ubyte[4] *col) { | |
106 uint *bufp = cast(uint *)display.pixels + y*display.pitch/4 + x; | |
107 SDL_GetRGBA(*bufp, display.format, &(*col)[0], &(*col)[1], &(*col)[2], &(*col)[3]); | |
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108 } |
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109 |
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110 struct rgb { |
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111 ubyte[3] values; |
73 | 112 ubyte r() { return values[0]; } |
113 ubyte g() { return values[1]; } | |
114 ubyte b() { return values[2]; } | |
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115 rgb opCat(rgb other) { |
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116 rgb res; |
73 | 117 foreach (id, ref v; res.values) v=cast(ubyte)((values[id]+other.values[id])/2); |
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118 return res; |
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119 } |
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120 bool opEquals(rgb r) { |
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121 return values == r.values; |
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122 } |
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123 } |
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124 |
73 | 125 void putpixel(int x, int y, ubyte[4] col) { |
126 if ( (x<0) || (y<0) || (x!<display.w) || (y!<display.h) ) return; | |
127 putpixel32(x, y, col); | |
128 } | |
129 | |
130 void hline(int x, int y, int w, rgb r) { | |
131 hline(x, y, w, SDL_MapRGBA(display.format, r.values[0], r.values[1], r.values[2], 0)); | |
132 } | |
133 void hline(int x, int y, int w, uint c) { | |
134 if ( (y<0) || (y!<display.h) ) return; | |
135 if (x<0) { w+=x; x=0; } | |
136 if (w<0) return; | |
137 if ( (x+w) !<display.w) w=display.w-x-1; | |
138 auto cur = cast(uint *)display.pixels + y*display.pitch/4 + x; | |
139 foreach (ref value; cur[0..w+1]) value=c; | |
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140 } |
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141 |
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142 const rgb White={[255, 255, 255]}; |
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143 const rgb Black={[0, 0, 0]}; |
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144 const rgb Red={[255, 0, 0]}; |
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145 const rgb Green={[0, 255, 0]}; |
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146 const rgb Blue={[0, 0, 255]}; |
73 | 147 const rgb Yellow={[255, 255, 0]}; |
148 const rgb Cyan={[0, 255, 255]}; | |
149 const rgb Purple={[255, 0, 255]}; | |
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150 rgb color=White; |
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151 rgb back=Black; |
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152 |
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153 template failfind(U, T...) { |
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154 static if (T.length) |
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155 static if (is(T[0] == U)) static assert(false, "Duplicate "~U.stringof~" found!"); |
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156 else const bool failfind=failfind!(U, T[1..$]); |
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157 else |
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158 const bool failfind=true; |
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159 } |
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160 |
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161 template select(U, T...) { |
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162 static if(T.length) |
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163 static if (is(U == T[0])) { static if (failfind!(U, T[1..$])) { }; const int select = 0; } |
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164 else |
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165 static if (select!(U, T[1..$]) != -1) |
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166 const int select = 1 + select!(U, T[1..$]); |
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167 else |
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168 const int select = -1; |
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169 else |
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170 const int select = -1; |
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171 } |
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172 |
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173 typedef rgb back_rgb; |
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174 back_rgb Back(rgb r) { return cast(back_rgb) r; } |
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175 back_rgb Back() { return cast(back_rgb) back; } |
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176 typedef rgb box_rgb; |
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177 box_rgb Box(rgb r) { return cast(box_rgb) r; } |
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178 box_rgb Box() { return cast(box_rgb) color; } |
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179 alias Back Fill; |
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180 |
73 | 181 bool doFlip=true; |
182 void flip() { SDL_Flip(display); } | |
183 void flip(bool target) { doFlip=target; } | |
184 scope class groupDraws { | |
185 bool wasOn; | |
186 this() { wasOn=doFlip; flip=false; } | |
187 ~this() { if (wasOn) { flip=true; flip; } } | |
188 } | |
189 | |
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190 void execParams(T...)(T params) { |
73 | 191 const int bcol=select!(back_rgb, T); |
192 static if (bcol != -1) back=cast(rgb) params[bcol]; | |
41
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193 const int col=select!(rgb, T); |
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194 static if (col != -1) color=params[col]; |
73 | 195 else static if (bcol != -1) color=back; |
41
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196 const int boxcol=select!(box_rgb, T); |
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197 static if (boxcol != -1) color=cast(rgb) params[boxcol]; |
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198 } |
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199 |
73 | 200 void tintfill(int x1, int y1, int x2, int y2, rgb color) { |
201 SDL_LockSurface(display); | |
202 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } | |
203 ubyte[4] c; | |
204 for (int x=x1; x<x2; ++x) { | |
205 for (int y=y1; y<y2; ++y) { | |
206 getpixel32(x, y, &c); | |
207 c[0]=cast(ubyte)(c[0]*178+color.r*77)>>8; | |
208 c[1]=cast(ubyte)(c[1]*178+color.g*77)>>8; | |
209 c[2]=cast(ubyte)(c[2]*178+color.b*77)>>8; | |
210 putpixel32(x, y, c); | |
211 } | |
212 } | |
213 } | |
214 | |
41
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215 void pset(T...)(int x, int y, T params) { |
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216 SDL_LockSurface(display); |
73 | 217 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } |
41
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218 execParams(params); |
73 | 219 putpixel32(x, y, color.values); |
41
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220 } |
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221 |
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222 rgb pget(int x, int y) { |
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223 SDL_LockSurface(display); |
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224 scope(exit) SDL_UnlockSurface(display); |
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225 ubyte[4] c; |
73 | 226 getpixel32(x, y, &c); |
41
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227 rgb res; res.values[]=c[0..3]; return res; |
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228 } |
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229 |
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230 void swap(T)(ref T a, ref T b) { T c=a; a=b; b=c; } |
73 | 231 T abs(T)(T a) { return (a<0) ? -a : a; } |
41
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232 |
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233 void bresenham(bool countUp=true, bool steep=false)(int x0, int y0, int x1, int y1) { |
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234 auto deltax = x1 - x0, deltay = y1 - y0; |
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235 static if (steep) { |
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236 auto Δerror = cast(float)deltax / cast(float)deltay; |
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237 auto var2 = x0; |
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238 const string name="y"; |
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239 } else { |
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240 auto Δerror = cast(float)deltay / cast(float)deltax; |
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241 auto var2 = y0; |
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242 const string name="x"; |
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243 } |
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244 auto error = 0f; |
73 | 245 ubyte[4] col; col[0..3]=color.values; |
41
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246 for (auto var1 = mixin(name~'0'); var1 <= mixin(name~'1'); ++var1) { |
73 | 247 static if (steep) putpixel(var2, var1, col); |
248 else putpixel(var1, var2, col); | |
41
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249 error += Δerror; |
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250 if (abs(error) >= 1f) { static if (countUp) { var2++; error -= 1f; } else { var2--; error += 1f; }} |
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251 } |
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252 } |
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253 |
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254 T max(T)(T a, T b) { return a>b?a:b; } |
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255 T min(T)(T a, T b) { return a<b?a:b; } |
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256 |
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257 void line(T...)(int x0, int y0, int x1, int y1, T p) { |
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258 execParams(p); |
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259 static if (select!(back_rgb, T)!=-1) { |
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260 SDL_LockSurface(display); |
73 | 261 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } |
262 auto yend=max(y0, y1); | |
263 for (int y=min(y0, y1); y<=yend; ++y) { | |
264 hline(min(x0, x1), y, max(x0, x1)-min(x0, x1), back); | |
41
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265 } |
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266 } |
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267 static if (select!(box_rgb, T)!=-1) { |
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268 line(x0, y0, x1, y0); |
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269 line(x1, y0, x1, y1); |
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270 line(x1, y1, x0, y1); |
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271 line(x0, y1, x0, y0); |
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272 } |
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273 static if (select!(box_rgb, T)+select!(back_rgb, T)==-2) { |
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274 SDL_LockSurface(display); |
73 | 275 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } |
41
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276 bool steep = abs(y1 - y0) > abs(x1 - x0); |
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277 void turn() { swap(x0, x1); swap(y0, y1); } |
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278 if (steep) { if (y1 < y0) turn; } |
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279 else { if (x1 < x0) turn; } |
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280 bool stepUp=steep ? (x0 < x1) : (y0 < y1); |
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281 if (steep) { |
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282 if (stepUp) bresenham!(true, true)(x0, y0, x1, y1); |
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283 else bresenham!(false, true)(x0, y0, x1, y1); |
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284 } else { |
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285 if (stepUp) bresenham!(true, false)(x0, y0, x1, y1); |
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286 else bresenham!(false, false)(x0, y0, x1, y1); |
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287 } |
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288 } |
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289 } |
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290 |
78
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291 pragma(LLVM_internal, "intrinsic", "llvm.sqrt.f32") { |
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292 float sqrt(float val); |
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293 } |
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294 pragma(LLVM_internal, "intrinsic", "llvm.sqrt.f64") { |
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295 double sqrt(double val); |
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296 real sqrt(real val); |
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297 } |
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298 |
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299 template circle_bresenham_pass(bool first) { |
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300 const string xy=(first?"x":"y"); |
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301 const string yx=(first?"y":"x"); |
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302 const string str=" |
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303 auto x="~(first?"xradius":"0")~"; |
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304 auto y="~(first?"0":"yradius")~"; |
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305 auto xchange=yradius*yradius*"~(first?"(1-2*xradius)":"1")~"; |
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306 auto ychange=xradius*xradius*"~(first?"1":"(1-2*yradius)")~"; |
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307 auto error=0; |
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308 auto stopx="~(first?"y2square*xradius":"0")~"; |
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309 auto stopy="~(first?"0":"x2square*yradius")~"; |
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310 while (stopx"~(first?">=":"<=")~"stopy) { |
73 | 311 putpixel(cx+x, cy+y, col); |
312 putpixel(cx+x, cy-y, col); | |
313 putpixel(cx-x, cy+y, col); | |
314 putpixel(cx-x, cy-y, col); | |
41
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315 "~yx~"++; |
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316 stop"~yx~"+="~xy~"2square; |
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317 error+="~yx~"change; |
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318 "~yx~"change+="~xy~"2square; |
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319 if ((2*error+"~xy~"change)>0) { |
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320 --"~xy~"; |
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321 stop"~xy~"-="~yx~"2square; |
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322 error+="~xy~"change; |
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323 "~xy~"change+="~yx~"2square; |
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324 } |
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325 } |
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326 "; |
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327 } |
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328 |
73 | 329 import std.stdio; |
330 void circle(T...)(T t) { | |
331 static assert(T.length!<3, "Circle: Needs x, y and radius"); | |
332 int cx=t[0], cy=t[1], xradius=t[2]; | |
41
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333 SDL_LockSurface(display); |
73 | 334 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } |
335 execParams(t[3..$]); | |
41
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336 auto yradius=xradius; |
73 | 337 if (xradius!>0) return; |
338 static if (T.length>3 && is(T[3]: int)) yradius=t[3]; | |
41
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339 static if (select!(back_rgb, T) != -1) { |
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340 auto ratio=xradius*1f/yradius; |
73 | 341 auto back_sdl=SDL_MapRGBA(display.format, back.values[0], back.values[1], back.values[2], 0); |
41
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342 for (int i=0; i<=yradius; ++i) { |
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343 ushort j=cast(ushort)(sqrt(cast(real)(yradius*yradius-i*i))*ratio); |
73 | 344 hline(cx-j, cy+i, 2*j, back_sdl); |
345 hline(cx-j, cy-i, 2*j, back_sdl); | |
41
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346 } |
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347 } |
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348 auto x2square=2*xradius*xradius; |
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349 auto y2square=2*yradius*yradius; |
73 | 350 ubyte[4] col; col[0..3]=color.values; |
41
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351 { mixin(circle_bresenham_pass!(true).str); } |
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352 { mixin(circle_bresenham_pass!(false).str); } |
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353 } |
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354 |
73 | 355 float distance(float x1, float y1, float x2, float y2) { |
356 auto x=x1-x2, y=y1-y2; | |
357 return sqrt(x*x+y*y); | |
358 } | |
359 | |
41
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360 struct floodfill_node { |
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361 int x, y; |
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362 static floodfill_node opCall(int x, int y) { |
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363 floodfill_node res; |
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364 res.x=x; res.y=y; |
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365 return res; |
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366 } |
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367 } |
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368 |
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369 void paint(T...)(int x, int y, T t) { |
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370 SDL_LockSurface(display); |
73 | 371 scope(exit) { SDL_UnlockSurface(display); if (doFlip) flip; } |
41
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372 execParams(t); |
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373 bool border=true; |
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374 if (select!(back_rgb, T) == -1) { |
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375 back=pget(x, y); |
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376 border=false; |
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377 } |
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378 bool check(rgb r) { |
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379 if (border) return (r != back) && (r != color); |
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380 else return r == back; |
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381 } |
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382 if (back == color) throw new Exception("Having identical backgrounds and foregrounds will severely mess up floodfill."); |
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383 alias floodfill_node node; |
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384 node[] queue; |
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385 queue ~= node(x, y); |
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386 size_t count=0; |
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387 while (count<queue.length) { |
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388 scope(exit) count++; |
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389 with (queue[count]) { |
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390 if (check(pget(x, y))) { |
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391 int w=x, e=x; |
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392 if (w<display.w) do w++; while ((w<display.w) && check(pget(w, y))); |
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393 if (e>=0) do e--; while (e>=0 && check(pget(e, y))); |
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394 //SDL_Flip(display); |
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395 for (int i=e+1; i<w; ++i) { |
73 | 396 putpixel32(i, y, color.values); |
41
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397 if (y && check(pget(i, y-1)) && ((i==w-1)||!check(pget(i+1, y-1)))) queue ~= node(i, y-1); |
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398 if ((y < display.h-1) && check(pget(i, y+1)) && ((i==w-1)||!check(pget(i+1, y+1)))) queue ~= node(i, y+1); |
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399 } |
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400 } |
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401 } |
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402 } |
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403 } |
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404 |
73 | 405 struct screen { |
406 static { | |
407 void opCall(size_t w, size_t h) { | |
408 display = SDL_SetVideoMode(w, h, 32, SDL_SWSURFACE | SDL_DOUBLEBUF); | |
409 } | |
410 int width() { return display.w; } | |
411 int height() { return display.h; } | |
412 } | |
41
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413 } |
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414 |
73 | 415 |
416 void cls(rgb fill=Black) { line(0, 0, display.w-1, display.h-1, Fill=fill); } | |
417 | |
418 void events(void delegate(int, bool) key=null, void delegate(int, int, ubyte, bool) mouse=null) { | |
419 SDL_Event evt; | |
420 while (SDL_PollEvent(&evt)) { | |
421 switch (evt.type) { | |
422 case SDL_EventType.MouseMotion: | |
423 with (evt.motion) if (mouse) mouse(x, y, 0, false); | |
424 break; | |
425 case SDL_EventType.MouseButtonDown: | |
426 with (evt.button) if (mouse) mouse(x, y, button, true); | |
427 break; | |
428 case SDL_EventType.MouseButtonUp: | |
429 with (evt.button) if (mouse) mouse(x, y, button, false); | |
430 break; | |
431 case SDL_EventType.KeyDown: | |
432 if (key) key(evt.key.keysym.sym, true); | |
433 case SDL_EventType.KeyUp: | |
434 if (key) key(evt.key.keysym.sym, false); | |
435 break; | |
436 case SDL_EventType.Quit: | |
437 throw new Error("Quit"); | |
438 break; | |
439 default: break; | |
440 } | |
441 } | |
442 } | |
443 | |
444 void events(void delegate(int) key, void delegate(int, int, ubyte, bool) mouse=null) { | |
445 events((int a, bool b) { | |
446 if (b) key(a); | |
447 }, mouse); | |
448 } | |
449 | |
450 void events(void delegate(int) key, void delegate(int, int) mouse) { | |
451 events(key, (int x, int y, ubyte b, bool p) { mouse(x, y); }); | |
452 } | |
453 | |
454 void events(void delegate(int, bool) key, void delegate(int, int) mouse) { | |
455 events(key, (int x, int y, ubyte b, bool p) { mouse(x, y); }); | |
456 } |