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 <apitest.h>
   9
  10 #include <wingdi.h>
  11 #include <winddi.h>
  12
  13 typedef union
  14 {
  15     float e;
  16     long l;
  17 } FLT_LONG;
  18
  19 #define ok_flt(x, y) \
  20 { \
  21     FLT_LONG __x, __y; \
  22     __x.e = (x); \
  23     __y.e = (y); \
  24     if (_isnan(y)) {\
  25       ok((__x.l == __y.l) || (__x.l == 0), "Wrong value for " #x ", expected " #y " (%f), got %f\n", (double)(y), (double)(x)); \
  26     } else {\
  27       ok(__x.l == __y.l, "Wrong value for " #x ", expected " #y " (%f), got %f\n", (double)(y), (double)(x)); \
  28     } \
  29 }
  30
  31 #define ok_xform(xform, m11, m12, m21, m22, dx, dy) \
  32     ok_flt(xform.eM11, m11); \
  33     ok_flt(xform.eM12, m12); \
  34     ok_flt(xform.eM21, m21); \
  35     ok_flt(xform.eM22, m22); \
  36     ok_flt(xform.eDx, dx); \
  37     ok_flt(xform.eDy, dy);
  38
  39 #define set_xform(pxform, m11, m12, m21, m22, dx, dy) \
  40     (pxform)->eM11 = m11; \
  41     (pxform)->eM12 = m12; \
  42     (pxform)->eM21 = m21; \
  43     (pxform)->eM22 = m22; \
  44     (pxform)->eDx = dx; \
  45     (pxform)->eDy = dy;
  46
  47 float geINF;
  48 float geIND;
  49 float geQNAN;
  50
  51 void Test_CombineTransform()
  52 {
  53     XFORM xform1, xform2, xform3;
  54
  55     /* Test NULL paramters */
  56     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  57     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  58     SetLastError(ERROR_SUCCESS);
  59     ok_int(CombineTransform(&xform3, &xform1, NULL), 0);
  60     ok_int(CombineTransform(&xform3, NULL, &xform2), 0);
  61     ok_int(CombineTransform(NULL, &xform1, &xform2), 0);
  62     ok_int(GetLastError(), ERROR_SUCCESS);
  63
  64     /* 2 zero matrices */
  65     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  66     set_xform(&xform2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  67     SetLastError(ERROR_SUCCESS);
  68     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  69     ok_xform(xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
  70     ok_int(GetLastError(), ERROR_SUCCESS);
  71
  72     /* 2 Identity matrices */
  73     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  74     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  75     SetLastError(ERROR_SUCCESS);
  76     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  77     ok_xform(xform3, 1.0, 0., 0., 1.0, 0., 0.);
  78     ok_int(GetLastError(), ERROR_SUCCESS);
  79
  80     /* 2 Identity matrices with offsets */
  81     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 20.0, -100.0);
  82     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
  83     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  84     ok_xform(xform3, 1.0, 0., 0., 1.0, 20.0, -100.0);
  85
  86     xform2.eDx = -60.0;
  87     xform2.eDy = -20;
  88     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  89     ok_flt(xform3.eDx, -40.0);
  90     ok_flt(xform3.eDy, -120.0);
  91
  92     /* add some stretching */
  93     xform2.eM11 = 2;
  94     xform2.eM22 = 4;
  95     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
  96     ok_xform(xform3, 2.0, 0., 0., 4.0, -20.0, -420.0);
  97
  98     /* add some more stretching */
  99     xform1.eM11 = -2.5;
 100     xform1.eM22 = 0.5;
 101     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 102     ok_xform(xform3, -5.0, 0., 0., 2.0, -20.0, -420.0);
 103
 104     xform1.eM12 = 2.0;
 105     xform1.eM21 = -0.5;
 106     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 107     ok_xform(xform3, -5.0, 8.0, -1.0, 2.0, -20.0, -420.0);
 108
 109     xform2.eM12 = 4.0;
 110     xform2.eM21 = 6.5;
 111     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 112     ok_xform(xform3, 8.0, -2.0, 2.25, 0.0, -670.0, -340.0);
 113
 114     set_xform(&xform1, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
 115     set_xform(&xform2, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
 116     set_xform(&xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 117     xform1.eDx = (FLOAT)4294967167.999999761;
 118     ok(xform1.eDx == 4294967040.0, "float rounding error.\n");
 119     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 120     ok_xform(xform3, 1.0, 0.0, 0.0, 1.0, 4294967040.0, 0.0);
 121
 122     set_xform(&xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 123     xform1.eDx = (FLOAT)4294967167.999999762;
 124     ok(xform1.eDx == 4294967296.0, "float rounding error.\n");
 125     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 126     ok_int(GetLastError(), ERROR_SUCCESS);
 127     ok_xform(xform3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 128
 129     xform1.eDx = (FLOAT)-4294967167.999999761;
 130     ok(xform1.eDx == -4294967040.0, "float rounding error.\n");
 131     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 132
 133     xform1.eDx = (FLOAT)-4294967167.999999762;
 134     ok(xform1.eDx == -4294967296.0, "float rounding error.\n");
 135     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 136     ok_int(GetLastError(), ERROR_SUCCESS);
 137
 138     xform1.eDx = 0;
 139     xform1.eDy = (FLOAT)4294967167.999999761;
 140     ok(xform1.eDy == 4294967040.0, "float rounding error.\n");
 141     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 142
 143     xform2.eDy = 1;
 144     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 145     ok_flt(xform3.eDy, 4294967040.0);
 146
 147     xform1.eDy = (FLOAT)4294967167.999999762;
 148     ok(xform1.eDy == 4294967296.0, "float rounding error.\n");
 149     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 150     ok_int(GetLastError(), ERROR_SUCCESS);
 151
 152     xform1.eDy = (FLOAT)-4294967167.999999761;
 153     ok(xform1.eDy == -4294967040.0, "float rounding error.\n");
 154     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 155
 156     xform1.eDy = (FLOAT)-4294967167.999999762;
 157     ok(xform1.eDy == -4294967296.0, "float rounding error.\n");
 158     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 159     ok_int(GetLastError(), ERROR_SUCCESS);
 160
 161     xform2.eDy = 10000;
 162     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 163
 164     set_xform(&xform1, 1000.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 165     xform1.eDx = (FLOAT)-4294967167.999999762;
 166     xform2.eM11 = 1000.0;
 167     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 168     ok_int(GetLastError(), ERROR_SUCCESS);
 169
 170     xform1.eDx = 100000.0;
 171     xform2.eM11 = 100000.0;
 172     ok_int(CombineTransform(&xform3, &xform1, &xform2), 0);
 173     ok_int(GetLastError(), ERROR_SUCCESS);
 174
 175     /* Some undefined values */
 176     set_xform(&xform1, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 177     xform2 = xform1;
 178     SetLastError(ERROR_SUCCESS);
 179     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 180     ok_xform(xform3, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 181     ok_int(GetLastError(), ERROR_SUCCESS);
 182
 183     set_xform(&xform2, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0);
 184     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 185     ok_xform(xform3, geIND, geIND, geINF, geINF, 0.0, 0.0);
 186     ok_int(GetLastError(), ERROR_SUCCESS);
 187
 188     set_xform(&xform1, (FLOAT)18446743500000000000.0, 0.0, 1.0, 0.0, 0.0, 0.0);
 189     xform2 = xform1;
 190     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 191     ok_flt(xform3.eM11, 340282326356119260000000000000000000000.0);
 192
 193     xform1.eM11 = (FLOAT)18446745000000000000.0;
 194     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 195     ok_flt(xform3.eM11, 340282346638528860000000000000000000000.0);
 196
 197     xform1.eM11 = (FLOAT)18446746000000000000.0;
 198     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 199     ok_long(*(DWORD*)&xform3.eM11, 0x7f800000);
 200
 201     /* zero matrix + 1 invalid */
 202     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 203     set_xform(&xform2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 204     *(DWORD*)&xform2.eM22 = 0x7f800000; // (0.0F/0.0F)
 205     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 206     ok_xform(xform3, 0.0, 0.0, 0.0, geIND, 0.0, 0.0);
 207
 208     /* zero matrix + 1 invalid */
 209     xform2 = xform1;
 210     *(DWORD*)&xform2.eM12 = 0x7f800000; // (0.0F/0.0F)
 211     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 212     ok_xform(xform3, 0.0, geIND, 0.0, geIND, 0.0, 0.0);
 213
 214     /* Some undefined values */
 215     set_xform(&xform1, 0.0, geIND, 0.0, 0.0, 0.0, 0.0);
 216     set_xform(&xform2, geIND, 0.0, 0.0, geINF, 0.0, 0.0);
 217     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 218     ok_xform(xform3, geIND, geIND, geIND, geIND, 0.0, 0.0);
 219
 220 }
 221
 222 void Test_CombineTransform_Inval(float eInval, float eOut)
 223 {
 224     XFORM xform1, xform2, xform3;
 225
 226     /* zero matrix / M11 invalid */
 227     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 228     set_xform(&xform2, eInval, 0.0, 0.0, 0.0, 0.0, 0.0);
 229     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 230     ok_xform(xform3, eOut, 0.0, 0.0, 0.0, 0.0, 0.0); // -> M21
 231     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 232     ok_xform(xform3, eOut, 0.0, 0.0, 0.0, 0.0, 0.0); // -> M12
 233
 234     /* zero matrix / M12 invalid */
 235     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 236     set_xform(&xform2, 0.0, eInval, 0.0, 0.0, 0.0, 0.0);
 237     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 238     ok_xform(xform3, 0.0, eOut, 0.0, eOut, 0.0, 0.0);
 239     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 240     ok_xform(xform3, eOut, eOut, 0.0, 0.0, 0.0, 0.0);
 241
 242     /* zero matrix / M21 invalid */
 243     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 244     set_xform(&xform2, 0.0, 0.0, eInval, 0.0, 0.0, 0.0);
 245     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 246     ok_xform(xform3, eOut, 0.0, eOut, 0.0, 0.0, 0.0);
 247     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 248     ok_xform(xform3, 0.0, 0.0, eOut, eOut, 0.0, 0.0);
 249
 250     /* zero matrix / M22 invalid */
 251     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 252     set_xform(&xform2, 0.0, 0.0, 0.0, eInval, 0.0, 0.0);
 253     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 254     ok_xform(xform3, 0.0, 0.0, 0.0, eOut, 0.0, 0.0); // -> M12
 255     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 256     ok_xform(xform3, 0.0, 0.0, 0.0, eOut, 0.0, 0.0); // -> M21
 257
 258     /* zero matrix / M11,M12 invalid */
 259     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 260     set_xform(&xform2, eInval, eInval, 0.0, 0.0, 0.0, 0.0);
 261     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 262     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 263     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 264     ok_xform(xform3, eOut, eOut, 0.0, 0.0, 0.0, 0.0);
 265
 266     /* zero matrix / M11,M21 invalid */
 267     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 268     set_xform(&xform2, eInval, 0.0, eInval, 0.0, 0.0, 0.0);
 269     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 270     ok_xform(xform3, eOut, 0.0, eOut, 0.0, 0.0, 0.0);
 271     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 272     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 273
 274     /* zero matrix / M11,M22 invalid */
 275     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 276     set_xform(&xform2, eInval, 0.0, 0.0, eInval, 0.0, 0.0);
 277     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 278     ok_xform(xform3, eOut, 0.0, 0.0, eOut, 0.0, 0.0); // -> M12, M21
 279     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 280     ok_xform(xform3, eOut, 0.0, 0.0, eOut, 0.0, 0.0);
 281
 282     /* zero matrix / M12,M21 invalid */
 283     set_xform(&xform1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
 284     set_xform(&xform2, 0.0, eInval, eInval, 0.0, 0.0, 0.0);
 285     ok_int(CombineTransform(&xform3, &xform1, &xform2), 1);
 286     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 287     ok_int(CombineTransform(&xform3, &xform2, &xform1), 1);
 288     ok_xform(xform3, eOut, eOut, eOut, eOut, 0.0, 0.0);
 289 }
 290
 291 START_TEST(CombineTransform)
 292 {
 293     *(DWORD*)&geINF = 0x7f800000;
 294     *(DWORD*)&geIND = 0xffc00000;
 295     *(DWORD*)&geQNAN = 0x7fc00000;
 296
 297     Test_CombineTransform();
 298
 299     Test_CombineTransform_Inval(geINF, geIND);
 300     Test_CombineTransform_Inval(geIND, geIND);
 301     Test_CombineTransform_Inval(geQNAN, geQNAN);
 302
 303 }
 304