test/graphics/writepixelarrayalpha.c

   1
   2 #include <dos/dos.h>
   3 #include <intuition/intuition.h>
   4 #include <graphics/gfx.h>
   5 #include <cybergraphx/cybergraphics.h>
   6 #include <proto/exec.h>
   7 #include <proto/dos.h>
   8 #include <proto/graphics.h>
   9 #include <proto/cybergraphics.h>
  10 #include <proto/intuition.h>
  11
  12 #include <math.h>
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15
  16 #define SCREENWIDTH  300
  17 #define SCREENHEIGHT 200
  18 #define SCREENCY (SCREENHEIGHT / 2)
  19
  20 /***********************************************************************************/
  21
  22 struct IntuitionBase *IntuitionBase;
  23 struct GfxBase *GfxBase;
  24 struct Library *CyberGfxBase;
  25 struct Screen *scr;
  26 struct Window *win;
  27 struct RastPort *rp;
  28 struct BitMap *bm;
  29
  30 ULONG cgfx_coltab[256];
  31 UBYTE Keys[128];
  32
  33 /***********************************************************************************/
  34
  35 static void cleanup(char *msg)
  36 {
  37     if (msg)
  38     {
  39         printf("WritePixelArrayAlpha: %s\n",msg);
  40     }
  41
  42     if (bm) FreeBitMap(bm);
  43     if (win) CloseWindow(win);
  44
  45     if (scr) UnlockPubScreen(0, scr);
  46
  47     if (CyberGfxBase) CloseLibrary(CyberGfxBase);
  48     if (GfxBase) CloseLibrary((struct Library *)GfxBase);
  49     if (IntuitionBase) CloseLibrary((struct Library *)IntuitionBase);
  50
  51     exit(0);
  52 }
  53
  54 /***********************************************************************************/
  55
  56 static void openlibs(void)
  57 {
  58     if (!(IntuitionBase = (struct IntuitionBase *)OpenLibrary("intuition.library", 39)))
  59     {
  60         cleanup("Can't open intuition.library V39!");
  61     }
  62
  63     if (!(GfxBase = (struct GfxBase *)OpenLibrary("graphics.library", 39)))
  64     {
  65         cleanup("Can't open graphics.library V39!");
  66     }
  67
  68     if (!(CyberGfxBase = OpenLibrary("cybergraphics.library",0)))
  69     {
  70         cleanup("Can't open cybergraphics.library!");
  71     }
  72 }
  73
  74 /***********************************************************************************/
  75
  76 static void getvisual(void)
  77 {
  78     if (!(scr = LockPubScreen(NULL)))
  79     {
  80         cleanup("Can't lock pub screen!");
  81     }
  82
  83     if (GetBitMapAttr(scr->RastPort.BitMap, BMA_DEPTH) <= 8)
  84     {
  85         cleanup("Need hi or true color screen!");
  86     }
  87 }
  88
  89 /***********************************************************************************/
  90
  91 static void makewin(void)
  92 {
  93     win = OpenWindowTags(NULL, WA_CustomScreen  , (IPTR)scr,
  94                                WA_InnerWidth    , SCREENWIDTH,
  95                                WA_InnerHeight   , SCREENHEIGHT,
  96                                WA_Title         , (IPTR)"WritePixelArrayAlpha: Move mouse!",
  97                                WA_DragBar       , TRUE,
  98                                WA_DepthGadget   , TRUE,
  99                                WA_CloseGadget   , TRUE,
 100                                WA_Activate      , TRUE,
 101                                WA_ReportMouse   , TRUE,
 102                                WA_MouseQueue    , 1,
 103                                WA_IDCMP         , IDCMP_CLOSEWINDOW | IDCMP_MOUSEMOVE,
 104                                WA_BackFill      , (IPTR)LAYERS_NOBACKFILL,
 105                                TAG_DONE);
 106
 107     if (!win) cleanup("Can't open window");
 108
 109     rp = win->RPort;
 110
 111     bm = AllocBitMap(win->GZZWidth, win->GZZHeight * 2, 0, 0, win->RPort->BitMap);
 112     if (bm)
 113     {
 114         struct RastPort temprp;
 115
 116         InitRastPort(&temprp);
 117         temprp.BitMap = bm;
 118
 119         ClipBlit(win->RPort, win->BorderLeft, win->BorderTop, &temprp, 0, 0, win->GZZWidth, win->GZZHeight, 192);
 120     }
 121 }
 122
 123 /***********************************************************************************/
 124
 125 #define KC_LEFT         0x4F
 126 #define KC_RIGHT        0x4E
 127 #define KC_UP           0x4C
 128 #define KC_DOWN         0x4D
 129 #define KC_ESC          0x45
 130
 131 /***********************************************************************************/
 132
 133 #if 0
 134 static void getevents(void)
 135 {
 136     struct IntuiMessage *msg;
 137
 138     while ((msg = (struct IntuiMessage *)GetMsg(win->UserPort)))
 139     {
 140         switch(msg->Class)
 141         {
 142             case IDCMP_CLOSEWINDOW:
 143                 Keys[KC_ESC] = 1;
 144                 break;
 145
 146             case IDCMP_RAWKEY:
 147                 {
 148                     WORD code = msg->Code & ~IECODE_UP_PREFIX;
 149
 150                     Keys[code] = (code == msg->Code) ? 1 : 0;
 151
 152                 }
 153                 break;
 154
 155         }
 156         ReplyMsg((struct Message *)msg);
 157     }
 158
 159 }
 160 #endif
 161
 162 /***********************************************************************************/
 163
 164 static void action(void)
 165 {
 166     static LONG tab[SCREENWIDTH * SCREENHEIGHT];
 167     LONG x, y;
 168     LONG ar1, ar2, ar3, ar4;
 169     LONG ag1, ag2, ag3, ag4;
 170     LONG ab1, ab2, ab3, ab4;
 171     LONG r1, r2, r3, r4;
 172     LONG g1, g2, g3, g4;
 173     LONG b1, b2, b3, b4;
 174     LONG tr1, tg1, tb1;
 175     LONG tr2, tg2, tb2;
 176     LONG tr3, tg3, tb3;
 177     LONG tr4, tg4, tb4;
 178     LONG ttr1, ttg1, ttb1;
 179     LONG ttr2, ttg2, ttb2;
 180     LONG tttr, tttg, tttb, ttta;
 181
 182     LONG col;
 183     BOOL quitme = FALSE;
 184
 185     struct IntuiMessage *msg;
 186
 187     while(!quitme)
 188     {
 189         ar1 = 0xFF; ag1 = 0xFF; ab1 = 0xFF;
 190         ar2 = 0xFF; ag2 = 0x00; ab2 = 0x00;
 191         ar3 = 0x00; ag3 = 0xFF; ab3 = 0x00;
 192         ar4 = 0x00; ag4 = 0x00; ab4 = 0xFF;
 193
 194         r1 = 0xFF; g1 = 0xFF; b1 = 0xFF;
 195         r2 = 0xFF; g2 = 0x00; b2 = 0x00;
 196         r3 = 0x00; g3 = 0xFF; b3 = 0x00;
 197         r4 = 0x00; g4 = 0x00; b4 = 0xFF;
 198
 199         x = scr->MouseX;
 200         if (x < 0) x = 0; else if (x >= scr->Width) x = scr->Width - 1;
 201
 202         r1 = ar1 + (ar2 - ar1) * x / (scr->Width - 1);
 203         g1 = ag1 + (ag2 - ag1) * x / (scr->Width - 1);
 204         b1 = ab1 + (ab2 - ab1) * x / (scr->Width - 1);
 205
 206         r2 = ar2 + (ar3 - ar2) * x / (scr->Width - 1);
 207         g2 = ag2 + (ag3 - ag2) * x / (scr->Width - 1);
 208         b2 = ab2 + (ab3 - ab2) * x / (scr->Width - 1);
 209
 210         r3 = ar3 + (ar4 - ar3) * x / (scr->Width - 1);
 211         g3 = ag3 + (ag4 - ag3) * x / (scr->Width - 1);
 212         b3 = ab3 + (ab4 - ab3) * x / (scr->Width - 1);
 213
 214         r4 = ar4 + (ar1 - ar4) * x / (scr->Width - 1);
 215         g4 = ag4 + (ag1 - ag4) * x / (scr->Width - 1);
 216         b4 = ab4 + (ab1 - ab4) * x / (scr->Width - 1);
 217
 218         ttta = (scr->MouseY * 256) / (scr->Height);
 219         if (ttta < 0) ttta = 0; else if (ttta > 255) ttta = 255;
 220
 221         for(y = 0; y < SCREENHEIGHT; y ++)
 222         {
 223             for(x = 0; x < SCREENWIDTH; x++)
 224             {
 225                 tr1 = r1 + (r2 - r1) * x / (SCREENWIDTH - 1);
 226                 tg1 = g1 + (g2 - g1) * x / (SCREENWIDTH - 1);
 227                 tb1 = b1 + (b2 - b1) * x / (SCREENWIDTH - 1);
 228
 229                 tr2 = r3 + (r4 - r3) * x / (SCREENWIDTH - 1);
 230                 tg2 = g3 + (g4 - g3) * x / (SCREENWIDTH - 1);
 231                 tb2 = b3 + (b4 - b3) * x / (SCREENWIDTH - 1);
 232
 233                 tr3 = r1 + (r3 - r1) * y / (SCREENHEIGHT - 1);
 234                 tg3 = g1 + (g3 - g1) * y / (SCREENHEIGHT - 1);
 235                 tb3 = b1 + (b3 - b1) * y / (SCREENHEIGHT - 1);
 236
 237                 tr4 = r2 + (r4 - r2) * y / (SCREENHEIGHT - 1);
 238                 tg4 = g2 + (g4 - g2) * y / (SCREENHEIGHT - 1);
 239                 tb4 = b2 + (b4 - b2) * y / (SCREENHEIGHT - 1);
 240
 241                 ttr1 = tr1 + (tr2 - tr1) * y / (SCREENHEIGHT - 1);
 242                 ttg1 = tg1 + (tg2 - tg1) * y / (SCREENHEIGHT - 1);
 243                 ttb1 = tb1 + (tb2 - tb1) * y / (SCREENHEIGHT - 1);
 244
 245                 ttr2 = tr3 + (tr4 - tr3) * x / (SCREENWIDTH - 1);
 246                 ttg2 = tg3 + (tg4 - tg3) * x / (SCREENWIDTH - 1);
 247                 ttb2 = tb3 + (tb4 - tb3) * x / (SCREENWIDTH - 1);
 248
 249                 tttr = (ttr1 + ttr2) / 2;
 250                 tttg = (ttg1 + ttg2) / 2;
 251                 tttb = (ttb1 + ttb2) / 2;
 252
 253 #if AROS_BIG_ENDIAN
 254                 col = (ttta << 24) + (tttr << 16) + (tttg << 8) + tttb;
 255 #else
 256                 col = (tttb << 24) + (tttg << 16) + (tttr << 8) + ttta;
 257 #endif
 258                 //kprintf("col[%d,%d] = %08x\n", x,y,col);
 259                 tab[y * SCREENWIDTH + x] = col;
 260
 261             } /* for(y = 0; y < SCREENHEIGHT; y ++) */
 262
 263         } /* for(y = 0; y < SCREENHEIGHT; y ++) */
 264
 265
 266         if (bm)
 267         {
 268             struct RastPort temprp;
 269
 270             InitRastPort(&temprp);
 271             temprp.BitMap = bm;
 272
 273             BltBitMap(bm, 0, 0, bm, 0, SCREENHEIGHT, SCREENWIDTH, SCREENHEIGHT, 192, 255, 0);
 274
 275             WritePixelArrayAlpha(tab, 0, 0, SCREENWIDTH * sizeof(LONG),
 276                             &temprp, 0, SCREENHEIGHT, SCREENWIDTH, SCREENHEIGHT,
 277                             0);
 278
 279             BltBitMapRastPort(bm, 0, SCREENHEIGHT, win->RPort, win->BorderLeft, win->BorderTop, win->GZZWidth, win->GZZHeight, 192);
 280         }
 281         else
 282         {
 283             WritePixelArrayAlpha(tab, 0, 0, SCREENWIDTH * sizeof(LONG),
 284                             win->RPort, win->BorderLeft, win->BorderTop, SCREENWIDTH, SCREENHEIGHT,
 285                             0);
 286         }
 287
 288         WaitPort(win->UserPort);
 289
 290         while((msg = (struct IntuiMessage *)GetMsg(win->UserPort)))
 291         {
 292             switch(msg->Class)
 293             {
 294                 case IDCMP_CLOSEWINDOW:
 295                     quitme = TRUE;
 296                     break;
 297
 298             }
 299             ReplyMsg((struct Message *)msg);
 300         }
 301
 302     }
 303
 304 }
 305
 306 /***********************************************************************************/
 307
 308 int main(void)
 309 {
 310     openlibs();
 311     getvisual();
 312     makewin();
 313     action();
 314     cleanup(0);
 315
 316     return 0; /* keep compiler happy */
 317 }
 318
 319 /***********************************************************************************/
 320