rostests/apitests/gdi32/CombineTransform.c

   1 /*
   2  * PROJECT:         ReactOS api tests
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * PURPOSE:         Test for CombineTransform
   5  * PROGRAMMERS:     Timo Kreuzer
   6  */
   7
   8 #include <wine/test.h>
   9 #include <wingdi.h>
  10 #include <winddi.h>
  11
  12 typedef union
  13 {
  14     float e;
  15     long l;
  16 } FLT_LONG;
  17
  18 #define ok_flt(x, y) \
  19 { \
  20     FLT_LONG __x, __y; \
  21     __x.e = (x); \
  22     __y.e = (y); \
  23     if (_isnan(y)) {\
  24       ok((__x.l == __y.l) || (__x.l == 0), "Wrong value for " #x ", expected " #y " (%f), got %f\n", (double)(y), (double)(x)); \
  25     } else {\
  26       ok(__x.l == __y.l, "Wrong value for " #x ", expected " #y " (%f), got %f\n", (double)(y), (double)(x)); \
  27     } \
  28 }
  29
  30 #define ok_xform(xform, m11, m12, m21, m22, dx, dy) \
  31     ok_flt(xform.eM11, m11); \
  32     ok_flt(xform.eM12, m12); \
  33     ok_flt(xform.eM21, m21); \
  34     ok_flt(xform.eM22, m22); \
  35     ok_flt(xform.eDx, dx); \
  36     ok_flt(xform.eDy, dy);
  37
  38 #define set_xform(pxform, m11, m12, m21, m22, dx, dy) \
  39     (pxform)->eM11 = m11; \
  40     (pxform)->eM12 = m12; \
  41     (pxform)->eM21 = m21; \
  42     (pxform)->eM22 = m22; \
  43     (pxform)->eDx = dx; \
  44     (pxform)->eDy = dy;
  45
  46 float geINF;
  47 float geIND;
  48 float geQNAN;
  49
  50 void Test_CombineTransform()
  51 {
  52     XFORM xform1, xform2, xform3;
  53
  54     /* Test NULL paramters */
  55     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  56     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  57     SetLastError(ERROR_SUCCESS);
  58     ok_int(CombineTransform(&xform3, &xform1, NULL), 0);
  59     ok_int(CombineTransform(&xform3, NULL, &xform2), 0);
  60     ok_int(CombineTransform(NULL, &xform1, &xform2), 0);
  61     ok_int(GetLastError(), ERROR_SUCCESS);
  62
  63     /* 2 zero matrices */
  64     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  65     set_xform(&xform2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  66     SetLastError(ERROR_SUCCESS);
  67     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  68     ok_xform(xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  69     ok_int(GetLastError(), ERROR_SUCCESS);
  70
  71     /* 2 Identity matrices */
  72     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  73     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  74     SetLastError(ERROR_SUCCESS);
  75     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  76     ok_xform(xform3, 1.0, 0., 0., 1.0, 0., 0.);
  77     ok_int(GetLastError(), ERROR_SUCCESS);
  78
  79     /* 2 Identity matrices with offsets */
  80     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 20.0, -100.0);
  81     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  82     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  83     ok_xform(xform3, 1.0, 0., 0., 1.0, 20.0, -100.0);
  84
  85     xform2.eDx = -60.0;
  86     xform2.eDy = -20;
  87     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  88     ok_flt(xform3.eDx, -40.0);
  89     ok_flt(xform3.eDy, -120.0);
  90
  91     /* add some stretching */
  92     xform2.eM11 = 2;
  93     xform2.eM22 = 4;
  94     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  95     ok_xform(xform3, 2.0, 0., 0., 4.0, -20.0, -420.0);
  96
  97     /* add some more stretching */
  98     xform1.eM11 = -2.5;
  99     xform1.eM22 = 0.5;
 100     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 101     ok_xform(xform3, -5.0, 0., 0., 2.0, -20.0, -420.0);
 102
 103     xform1.eM12 = 2.0;
 104     xform1.eM21 = -0.5;
 105     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 106     ok_xform(xform3, -5.0, 8.0, -1.0, 2.0, -20.0, -420.0);
 107
 108     xform2.eM12 = 4.0;
 109     xform2.eM21 = 6.5;
 110     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 111     ok_xform(xform3, 8.0, -2.0, 2.25, 0.0, -670.0, -340.0);
 112
 113     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
 114     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
 115     set_xform(&xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 116     xform1.eDx = (FLOAT)4294967167.999999761;
 117     ok(xform1.eDx == 4294967040.0, "float rounding error.\n");
 118     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 119     ok_xform(xform3, 1.0, 0.0, 0.0, 1.0, 4294967040.0, 0.0);
 120
 121     set_xform(&xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 122     xform1.eDx = (FLOAT)4294967167.999999762;
 123     ok(xform1.eDx == 4294967296.0, "float rounding error.\n");
 124     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 125     ok_int(GetLastError(), ERROR_SUCCESS);
 126     ok_xform(xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 127
 128     xform1.eDx = (FLOAT)-4294967167.999999761;
 129     ok(xform1.eDx == -4294967040.0, "float rounding error.\n");
 130     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 131
 132     xform1.eDx = (FLOAT)-4294967167.999999762;
 133     ok(xform1.eDx == -4294967296.0, "float rounding error.\n");
 134     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 135     ok_int(GetLastError(), ERROR_SUCCESS);
 136
 137     xform1.eDx = 0;
 138     xform1.eDy = (FLOAT)4294967167.999999761;
 139     ok(xform1.eDy == 4294967040.0, "float rounding error.\n");
 140     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 141
 142     xform2.eDy = 1;
 143     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 144     ok_flt(xform3.eDy, 4294967040.0);
 145
 146     xform1.eDy = (FLOAT)4294967167.999999762;
 147     ok(xform1.eDy == 4294967296.0, "float rounding error.\n");
 148     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 149     ok_int(GetLastError(), ERROR_SUCCESS);
 150
 151     xform1.eDy = (FLOAT)-4294967167.999999761;
 152     ok(xform1.eDy == -4294967040.0, "float rounding error.\n");
 153     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 154
 155     xform1.eDy = (FLOAT)-4294967167.999999762;
 156     ok(xform1.eDy == -4294967296.0, "float rounding error.\n");
 157     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 158     ok_int(GetLastError(), ERROR_SUCCESS);
 159
 160     xform2.eDy = 10000;
 161     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 162
 163     set_xform(&xform1, 1000.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 164     xform1.eDx = (FLOAT)-4294967167.999999762;
 165     xform2.eM11 = 1000.0;
 166     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 167     ok_int(GetLastError(), ERROR_SUCCESS);
 168
 169     xform1.eDx = 100000.0;
 170     xform2.eM11 = 100000.0;
 171     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 172     ok_int(GetLastError(), ERROR_SUCCESS);
 173
 174     /* Some undefined values */
 175     set_xform(&xform1, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 176     xform2 = xform1;
 177     SetLastError(ERROR_SUCCESS);
 178     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 179     ok_xform(xform3, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 180     ok_int(GetLastError(), ERROR_SUCCESS);
 181
 182     set_xform(&xform2, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0);
 183     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 184     ok_xform(xform3, geIND, geIND, geINF, geINF, 0.0, 0.0);
 185     ok_int(GetLastError(), ERROR_SUCCESS);
 186
 187     set_xform(&xform1, (FLOAT)18446743500000000000.0, 0.0, 1.0, 0.0, 0.0, 0.0);
 188     xform2 = xform1;
 189     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 190     ok_flt(xform3.eM11, 340282326356119260000000000000000000000.0);
 191
 192     xform1.eM11 = (FLOAT)18446745000000000000.0;
 193     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 194     ok_flt(xform3.eM11, 340282346638528860000000000000000000000.0);
 195
 196     xform1.eM11 = (FLOAT)18446746000000000000.0;
 197     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 198     ok_long(*(DWORD*)&xform3.eM11, 0x7f800000);
 199
 200     /* zero matrix + 1 invalid */
 201     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 202     set_xform(&xform2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 203     *(DWORD*)&xform2.eM22 = 0x7f800000; // (0.0F/0.0F)
 204     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 205     ok_xform(xform3, 0.0, 0.0, 0.0, geIND, 0.0, 0.0);
 206
 207     /* zero matrix + 1 invalid */
 208     xform2 = xform1;
 209     *(DWORD*)&xform2.eM12 = 0x7f800000; // (0.0F/0.0F)
 210     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 211     ok_xform(xform3, 0.0, geIND, 0.0, geIND, 0.0, 0.0);
 212
 213     /* Some undefined values */
 214     set_xform(&xform1, 0.0, geIND, 0.0, 0.0, 0.0, 0.0);
 215     set_xform(&xform2, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 216     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 217     ok_xform(xform3, geIND, geIND, geIND, geIND, 0.0, 0.0);
 218
 219 }
 220
 221 void Test_CombineTransform_Inval(float eInval, float eOut)
 222 {
 223     XFORM xform1, xform2, xform3;
 224
 225     /* zero matrix / M11 invalid */
 226     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 227     set_xform(&xform2, eInval, 0.0, 0.0, 0.0, 0.0, 0.0);
 228     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 229     ok_xform(xform3, eOut, 0.0, 0.0, 0.0, 0.0, 0.0); // -> M21
 230     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 231     ok_xform(xform3, eOut, 0.0, 0.0, 0.0, 0.0, 0.0); // -> M12
 232
 233     /* zero matrix / M12 invalid */
 234     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 235     set_xform(&xform2, 0.0, eInval, 0.0, 0.0, 0.0, 0.0);
 236     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 237     ok_xform(xform3, 0.0, eOut, 0.0, eOut, 0.0, 0.0);
 238     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 239     ok_xform(xform3, eOut, eOut, 0.0, 0.0, 0.0, 0.0);
 240
 241     /* zero matrix / M21 invalid */
 242     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 243     set_xform(&xform2, 0.0, 0.0, eInval, 0.0, 0.0, 0.0);
 244     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 245     ok_xform(xform3, eOut, 0.0, eOut, 0.0, 0.0, 0.0);
 246     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 247     ok_xform(xform3, 0.0, 0.0, eOut, eOut, 0.0, 0.0);
 248
 249     /* zero matrix / M22 invalid */
 250     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 251     set_xform(&xform2, 0.0, 0.0, 0.0, eInval, 0.0, 0.0);
 252     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 253     ok_xform(xform3, 0.0, 0.0, 0.0, eOut, 0.0, 0.0); // -> M12
 254     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 255     ok_xform(xform3, 0.0, 0.0, 0.0, eOut, 0.0, 0.0); // -> M21
 256
 257     /* zero matrix / M11,M12 invalid */
 258     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 259     set_xform(&xform2, eInval, eInval, 0.0, 0.0, 0.0, 0.0);
 260     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 261     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 262     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 263     ok_xform(xform3, eOut, eOut, 0.0, 0.0, 0.0, 0.0);
 264
 265     /* zero matrix / M11,M21 invalid */
 266     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 267     set_xform(&xform2, eInval, 0.0, eInval, 0.0, 0.0, 0.0);
 268     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 269     ok_xform(xform3, eOut, 0.0, eOut, 0.0, 0.0, 0.0);
 270     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 271     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 272
 273     /* zero matrix / M11,M22 invalid */
 274     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 275     set_xform(&xform2, eInval, 0.0, 0.0, eInval, 0.0, 0.0);
 276     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 277     ok_xform(xform3, eOut, 0.0, 0.0, eOut, 0.0, 0.0); // -> M12, M21
 278     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 279     ok_xform(xform3, eOut, 0.0, 0.0, eOut, 0.0, 0.0);
 280
 281     /* zero matrix / M12,M21 invalid */
 282     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 283     set_xform(&xform2, 0.0, eInval, eInval, 0.0, 0.0, 0.0);
 284     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 285     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 286     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 287     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 288 }
 289
 290 START_TEST(CombineTransform)
 291 {
 292     *(DWORD*)&geINF = 0x7f800000;
 293     *(DWORD*)&geIND = 0xffc00000;
 294     *(DWORD*)&geQNAN = 0x7fc00000;
 295
 296     Test_CombineTransform();
 297
 298     Test_CombineTransform_Inval(geINF, geIND);
 299     Test_CombineTransform_Inval(geIND, geIND);
 300     Test_CombineTransform_Inval(geQNAN, geQNAN);
 301
 302 }
 303