dlls/gdiplus/tests/matrix.c

   1 /*
   2  * Unit test suite for matrices
   3  *
   4  * Copyright (C) 2007 Google (Evan Stade)
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <math.h>
  22 #include <limits.h>
  23
  24 #include "objbase.h"
  25 #include "gdiplus.h"
  26 #include "wine/test.h"
  27
  28 #define expect(expected, got) ok(got == expected, "Expected %.8x, got %.8x\n", expected, got)
  29 #define expectf(expected, got) ok(fabs(expected - got) < 0.0001, "Expected %.2f, got %.2f\n", expected, got)
  30
  31 static BOOL compare_float(float f, float g, unsigned int ulps)
  32 {
  33     int x = *(int *)&f;
  34     int y = *(int *)&g;
  35
  36     if (x < 0)
  37         x = INT_MIN - x;
  38     if (y < 0)
  39         y = INT_MIN - y;
  40
  41     if (abs(x - y) > ulps)
  42         return FALSE;
  43
  44     return TRUE;
  45 }
  46
  47 static void test_constructor_destructor(void)
  48 {
  49     GpStatus status;
  50     GpMatrix *matrix = NULL;
  51
  52     status = GdipCreateMatrix2(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &matrix);
  53     expect(Ok, status);
  54     ok(matrix != NULL, "Expected matrix to be initialized\n");
  55
  56     status = GdipDeleteMatrix(NULL);
  57     expect(InvalidParameter, status);
  58
  59     status = GdipDeleteMatrix(matrix);
  60     expect(Ok, status);
  61 }
  62
  63 typedef struct{
  64     REAL X;
  65     REAL Y;
  66 } real_point;
  67
  68 static real_point transform_points[] = {
  69     {1000.00, 2600.00}, /*0*/
  70     {855.00, 2390.00}, /*1*/
  71     {700.00, 2200.00}, /*2*/
  72     {565.00, 1970.00}, /*3*/
  73     {400.00, 1800.00}, /*4*/
  74     {275.00, 1550.00}, /*5*/
  75     {100.00, 1400.00}, /*6*/
  76     {-15.00, 1130.00}, /*7*/
  77     {-200.00, 1000.00}, /*8*/
  78     {-305.00, 710.00} /*9*/
  79     };
  80
  81 static void test_transform(void)
  82 {
  83     GpStatus status;
  84     GpMatrix *matrix = NULL;
  85     GpPointF pts[10];
  86     INT i;
  87     BOOL match;
  88
  89     for(i = 0; i < 10; i ++){
  90         pts[i].X = i * 5.0 * (REAL)(i % 2);
  91         pts[i].Y = 50.0 - i * 5.0;
  92     }
  93
  94     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
  95
  96     status = GdipTransformMatrixPoints(matrix, pts, 0);
  97     expect(InvalidParameter, status);
  98
  99     status = GdipTransformMatrixPoints(matrix, pts, 10);
 100     expect(Ok, status);
 101
 102     for(i = 0; i < 10; i ++){
 103         match = fabs(transform_points[i].X - pts[i].X) < 2.0
 104             && fabs(transform_points[i].Y -  pts[i].Y) < 2.0;
 105
 106         ok(match, "Expected #%d to be (%.2f, %.2f) but got (%.2f, %.2f)\n", i,
 107            transform_points[i].X, transform_points[i].Y, pts[i].X, pts[i].Y);
 108     }
 109
 110     GdipDeleteMatrix(matrix);
 111 }
 112
 113 static void test_isinvertible(void)
 114 {
 115     GpStatus status;
 116     GpMatrix *matrix = NULL;
 117     BOOL result;
 118
 119     /* NULL arguments */
 120     status = GdipIsMatrixInvertible(NULL, &result);
 121     expect(InvalidParameter, status);
 122     status = GdipIsMatrixInvertible((GpMatrix*)0xdeadbeef, NULL);
 123     expect(InvalidParameter, status);
 124     status = GdipIsMatrixInvertible(NULL, NULL);
 125     expect(InvalidParameter, status);
 126
 127     /* invertible */
 128     GdipCreateMatrix2(1.0, 1.2, 2.3, -1.0, 2.0, 3.0, &matrix);
 129     status = GdipIsMatrixInvertible(matrix, &result);
 130     expect(Ok, status);
 131     expect(TRUE, result);
 132     GdipDeleteMatrix(matrix);
 133
 134     /* noninvertible */
 135     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 136     status = GdipIsMatrixInvertible(matrix, &result);
 137     expect(Ok, status);
 138     expect(FALSE, result);
 139     GdipDeleteMatrix(matrix);
 140 }
 141
 142 static void test_invert(void)
 143 {
 144     GpStatus status;
 145     GpMatrix *matrix = NULL;
 146     GpMatrix *inverted = NULL;
 147     BOOL equal = FALSE;
 148     REAL elems[6];
 149
 150     /* NULL */
 151     status = GdipInvertMatrix(NULL);
 152     expect(InvalidParameter, status);
 153
 154     /* noninvertible */
 155     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 156     status = GdipInvertMatrix(matrix);
 157     expect(InvalidParameter, status);
 158     GdipDeleteMatrix(matrix);
 159
 160     /* invertible */
 161     GdipCreateMatrix2(3.0, -2.0, 5.0, 2.0, 6.0, 3.0, &matrix);
 162     status = GdipInvertMatrix(matrix);
 163     expect(Ok, status);
 164     GdipCreateMatrix2(2.0/16.0, 2.0/16.0, -5.0/16.0, 3.0/16.0, 3.0/16.0, -21.0/16.0, &inverted);
 165     GdipIsMatrixEqual(matrix, inverted, &equal);
 166     expect(TRUE, equal);
 167     GdipDeleteMatrix(matrix);
 168
 169     GdipCreateMatrix2(0.0006, 0, 0, 0.0006, 400, 400, &matrix);
 170     status = GdipInvertMatrix(matrix);
 171     expect(Ok, status);
 172     status = GdipGetMatrixElements(matrix, elems);
 173     expect(Ok, status);
 174     ok(compare_float(elems[0], 1666.666504, 1), "elems[0] = %.10g\n", elems[0]);
 175     ok(compare_float(elems[1], 0, 0), "elems[1] = %.10g\n", elems[1]);
 176     ok(compare_float(elems[2], 0, 0), "elems[2] = %.10g\n", elems[2]);
 177     ok(compare_float(elems[3], 1666.666504, 1), "elems[3] = %.10g\n", elems[3]);
 178     ok(compare_float(elems[4], -666666.6875, 1), "elems[4] = %.10g\n", elems[4]);
 179     ok(compare_float(elems[5], -666666.6875, 1), "elems[5] = %.10g\n", elems[5]);
 180
 181     GdipDeleteMatrix(inverted);
 182     GdipDeleteMatrix(matrix);
 183 }
 184
 185 static void test_shear(void)
 186 {
 187     GpStatus status;
 188     GpMatrix *matrix  = NULL;
 189     GpMatrix *sheared = NULL;
 190     BOOL equal;
 191
 192     /* NULL */
 193     status = GdipShearMatrix(NULL, 0.0, 0.0, MatrixOrderPrepend);
 194     expect(InvalidParameter, status);
 195
 196     /* X only shearing, MatrixOrderPrepend */
 197     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 198     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderPrepend);
 199     expect(Ok, status);
 200     GdipCreateMatrix2(1.0, 2.0, 5.5, 2.0, 6.0, 3.0, &sheared);
 201     GdipIsMatrixEqual(matrix, sheared, &equal);
 202     expect(TRUE, equal);
 203     GdipDeleteMatrix(sheared);
 204     GdipDeleteMatrix(matrix);
 205
 206     /* X only shearing, MatrixOrderAppend */
 207     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 208     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderAppend);
 209     expect(Ok, status);
 210     GdipCreateMatrix2(4.0, 2.0, 2.5, -1.0, 10.5, 3.0, &sheared);
 211     GdipIsMatrixEqual(matrix, sheared, &equal);
 212     expect(TRUE, equal);
 213     GdipDeleteMatrix(sheared);
 214     GdipDeleteMatrix(matrix);
 215
 216     /* Y only shearing, MatrixOrderPrepend */
 217     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 218     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderPrepend);
 219     expect(Ok, status);
 220     GdipCreateMatrix2(7.0, 0.5, 4.0, -1.0, 6.0, 3.0, &sheared);
 221     GdipIsMatrixEqual(matrix, sheared, &equal);
 222     expect(TRUE, equal);
 223     GdipDeleteMatrix(sheared);
 224     GdipDeleteMatrix(matrix);
 225
 226     /* Y only shearing, MatrixOrderAppend */
 227     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 228     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderAppend);
 229     expect(Ok, status);
 230     GdipCreateMatrix2(1.0, 3.5, 4.0, 5.0, 6.0, 12.0, &sheared);
 231     GdipIsMatrixEqual(matrix, sheared, &equal);
 232     expect(TRUE, equal);
 233     GdipDeleteMatrix(sheared);
 234     GdipDeleteMatrix(matrix);
 235
 236     /* X,Y shearing, MatrixOrderPrepend */
 237     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 238     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderPrepend);
 239     expect(Ok, status);
 240     GdipCreateMatrix2(7.0, 0.5, 8.0, 7.0, 6.0, 3.0, &sheared);
 241     GdipIsMatrixEqual(matrix, sheared, &equal);
 242     expect(TRUE, equal);
 243     GdipDeleteMatrix(sheared);
 244     GdipDeleteMatrix(matrix);
 245
 246     /* X,Y shearing, MatrixOrderAppend */
 247     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 248     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderAppend);
 249     expect(Ok, status);
 250     GdipCreateMatrix2(9.0, 3.5, 0.0, 5.0, 18.0, 12.0, &sheared);
 251     GdipIsMatrixEqual(matrix, sheared, &equal);
 252     expect(TRUE, equal);
 253     GdipDeleteMatrix(sheared);
 254     GdipDeleteMatrix(matrix);
 255 }
 256
 257 static void test_constructor3(void)
 258 {
 259     /* MSDN is on crack. GdipCreateMatrix3 makes a matrix that transforms the
 260      * corners of the given rectangle to the three points given. */
 261     GpMatrix *matrix;
 262     REAL values[6];
 263     GpRectF rc;
 264     GpPointF pt[3];
 265     GpStatus stat;
 266
 267     rc.X = 10;
 268     rc.Y = 10;
 269     rc.Width = 10;
 270     rc.Height = 10;
 271
 272     pt[0].X = 10;
 273     pt[0].Y = 10;
 274     pt[1].X = 20;
 275     pt[1].Y = 10;
 276     pt[2].X = 10;
 277     pt[2].Y = 20;
 278
 279     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 280     expect(Ok, stat);
 281
 282     stat = GdipGetMatrixElements(matrix, values);
 283     expect(Ok, stat);
 284
 285     expectf(1.0, values[0]);
 286     expectf(0.0, values[1]);
 287     expectf(0.0, values[2]);
 288     expectf(1.0, values[3]);
 289     expectf(0.0, values[4]);
 290     expectf(0.0, values[5]);
 291
 292     GdipDeleteMatrix(matrix);
 293
 294     pt[0].X = 20;
 295     pt[0].Y = 10;
 296     pt[1].X = 40;
 297     pt[1].Y = 10;
 298     pt[2].X = 20;
 299     pt[2].Y = 20;
 300
 301     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 302     expect(Ok, stat);
 303
 304     stat = GdipGetMatrixElements(matrix, values);
 305     expect(Ok, stat);
 306
 307     expectf(2.0, values[0]);
 308     expectf(0.0, values[1]);
 309     expectf(0.0, values[2]);
 310     expectf(1.0, values[3]);
 311     expectf(0.0, values[4]);
 312     expectf(0.0, values[5]);
 313
 314     GdipDeleteMatrix(matrix);
 315
 316     pt[0].X = 10;
 317     pt[0].Y = 20;
 318     pt[1].X = 20;
 319     pt[1].Y = 30;
 320     pt[2].X = 10;
 321     pt[2].Y = 30;
 322
 323     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 324     expect(Ok, stat);
 325
 326     stat = GdipGetMatrixElements(matrix, values);
 327     expect(Ok, stat);
 328
 329     expectf(1.0, values[0]);
 330     expectf(1.0, values[1]);
 331     expectf(0.0, values[2]);
 332     expectf(1.0, values[3]);
 333     expectf(0.0, values[4]);
 334     expectf(0.0, values[5]);
 335
 336     GdipDeleteMatrix(matrix);
 337 }
 338
 339 static void test_isidentity(void)
 340 {
 341     GpMatrix *matrix;
 342     GpStatus stat;
 343     BOOL result;
 344
 345     stat = GdipIsMatrixIdentity(NULL, NULL);
 346     expect(InvalidParameter, stat);
 347
 348     stat = GdipIsMatrixIdentity(NULL, &result);
 349     expect(InvalidParameter, stat);
 350
 351     stat = GdipCreateMatrix2(1.0, 0.0, 0.0, 1.0, 0.0, 0.0, &matrix);
 352     expect(Ok, stat);
 353
 354     stat = GdipIsMatrixIdentity(matrix, NULL);
 355     expect(InvalidParameter, stat);
 356
 357     result = FALSE;
 358     stat = GdipIsMatrixIdentity(matrix, &result);
 359     expect(Ok, stat);
 360     ok(!!result, "got %d\n", result);
 361
 362     stat = GdipSetMatrixElements(matrix, 1.0, 0.0, 0.0, 1.0, 0.1, 0.0);
 363     expect(Ok, stat);
 364
 365     result = TRUE;
 366     stat = GdipIsMatrixIdentity(matrix, &result);
 367     expect(Ok, stat);
 368     ok(!result, "got %d\n", result);
 369
 370     GdipDeleteMatrix(matrix);
 371 }
 372
 373 START_TEST(matrix)
 374 {
 375     struct GdiplusStartupInput gdiplusStartupInput;
 376     ULONG_PTR gdiplusToken;
 377     HMODULE hmsvcrt;
 378     int (CDECL * _controlfp_s)(unsigned int *cur, unsigned int newval, unsigned int mask);
 379
 380     /* Enable all FP exceptions except _EM_INEXACT, which gdi32 can trigger */
 381     hmsvcrt = LoadLibraryA("msvcrt");
 382     _controlfp_s = (void*)GetProcAddress(hmsvcrt, "_controlfp_s");
 383     if (_controlfp_s) _controlfp_s(0, 0, 0x0008001e);
 384
 385     gdiplusStartupInput.GdiplusVersion              = 1;
 386     gdiplusStartupInput.DebugEventCallback          = NULL;
 387     gdiplusStartupInput.SuppressBackgroundThread    = 0;
 388     gdiplusStartupInput.SuppressExternalCodecs      = 0;
 389
 390     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 391
 392     test_constructor_destructor();
 393     test_transform();
 394     test_isinvertible();
 395     test_invert();
 396     test_shear();
 397     test_constructor3();
 398     test_isidentity();
 399
 400     GdiplusShutdown(gdiplusToken);
 401 }