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_translate(void)
 114 {
 115     GpStatus status;
 116     GpMatrix *matrix = NULL;
 117     REAL elems[6];
 118
 119     static const REAL expected_elem_append[] = {1.0, -2.0, 30.0, 40.0, -470.0, 620.0};
 120     static const REAL expected_elem_prepend[] = {1.0, -2.0, 30.0, 40.0, 130.0, 1340.0};
 121
 122     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
 123
 124     status = GdipTranslateMatrix(NULL, 30.0, 20.0, MatrixOrderAppend);
 125     expect(InvalidParameter, status);
 126     status = GdipTranslateMatrix(matrix, 30.0, 20.0, MatrixOrderAppend);
 127     expect(Ok, status);
 128
 129     status = GdipGetMatrixElements(matrix, elems);
 130     expect(Ok, status);
 131     GdipDeleteMatrix(matrix);
 132
 133     for(INT i = 0; i < 6; i++)
 134         ok(expected_elem_append[i] == elems[i], "Expected #%d to be (%.1f) but got (%.1f)\n", i,
 135            expected_elem_append[i], elems[i]);
 136
 137     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
 138
 139     status = GdipTranslateMatrix(matrix, 30.0, 20.0, MatrixOrderPrepend);
 140     expect(Ok, status);
 141
 142     status = GdipGetMatrixElements(matrix, elems);
 143     expect(Ok, status);
 144     GdipDeleteMatrix(matrix);
 145
 146     for(INT i = 0; i < 6; i++)
 147         ok(expected_elem_prepend[i] == elems[i], "Expected #%d to be (%.1f) but got (%.1f)\n", i,
 148            expected_elem_prepend[i], elems[i]);
 149
 150 }
 151
 152 static void test_scale(void)
 153 {
 154     GpStatus status;
 155     GpMatrix *matrix = NULL;
 156     REAL elems[6];
 157     int i;
 158
 159     static const REAL expected_elem[] = {3.0, -4.0, 90.0, 80.0, -1500.0, 1200.0};
 160     static const REAL expected_elem2[] = {3.0, -6.0, 60.0, 80.0, -500.0, 600.0};
 161
 162     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
 163
 164     status = GdipScaleMatrix(NULL, 3, 2, MatrixOrderAppend);
 165     expect(InvalidParameter, status);
 166     status = GdipScaleMatrix(matrix, 3, 2, MatrixOrderAppend);
 167     expect(Ok, status);
 168
 169     status = GdipGetMatrixElements(matrix, elems);
 170     expect(Ok, status);
 171     GdipDeleteMatrix(matrix);
 172
 173     for(i = 0; i < 6; i++)
 174         ok(expected_elem[i] == elems[i], "Expected #%d to be (%.1f) but got (%.1f)\n", i,
 175            expected_elem[i], elems[i]);
 176
 177     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
 178
 179     status = GdipScaleMatrix(matrix, 3, 2, MatrixOrderPrepend);
 180     expect(Ok, status);
 181
 182     status = GdipGetMatrixElements(matrix, elems);
 183     expect(Ok, status);
 184     GdipDeleteMatrix(matrix);
 185
 186     for(i = 0; i < 6; i++)
 187         ok(expected_elem2[i] == elems[i], "Expected #%d to be (%.1f) but got (%.1f)\n", i,
 188            expected_elem2[i], elems[i]);
 189
 190 }
 191
 192 static void test_isinvertible(void)
 193 {
 194     GpStatus status;
 195     GpMatrix *matrix = NULL;
 196     BOOL result;
 197
 198     /* NULL arguments */
 199     status = GdipIsMatrixInvertible(NULL, &result);
 200     expect(InvalidParameter, status);
 201     status = GdipIsMatrixInvertible((GpMatrix*)0xdeadbeef, NULL);
 202     expect(InvalidParameter, status);
 203     status = GdipIsMatrixInvertible(NULL, NULL);
 204     expect(InvalidParameter, status);
 205
 206     /* invertible */
 207     GdipCreateMatrix2(1.0, 1.2, 2.3, -1.0, 2.0, 3.0, &matrix);
 208     status = GdipIsMatrixInvertible(matrix, &result);
 209     expect(Ok, status);
 210     expect(TRUE, result);
 211     GdipDeleteMatrix(matrix);
 212
 213     /* noninvertible */
 214     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 215     status = GdipIsMatrixInvertible(matrix, &result);
 216     expect(Ok, status);
 217     expect(FALSE, result);
 218     GdipDeleteMatrix(matrix);
 219 }
 220
 221 static void test_invert(void)
 222 {
 223     GpStatus status;
 224     GpMatrix *matrix = NULL;
 225     GpMatrix *inverted = NULL;
 226     BOOL equal = FALSE;
 227     REAL elems[6];
 228
 229     /* NULL */
 230     status = GdipInvertMatrix(NULL);
 231     expect(InvalidParameter, status);
 232
 233     /* noninvertible */
 234     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 235     status = GdipInvertMatrix(matrix);
 236     expect(InvalidParameter, status);
 237     GdipDeleteMatrix(matrix);
 238
 239     /* invertible */
 240     GdipCreateMatrix2(3.0, -2.0, 5.0, 2.0, 6.0, 3.0, &matrix);
 241     status = GdipInvertMatrix(matrix);
 242     expect(Ok, status);
 243     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);
 244     GdipIsMatrixEqual(matrix, inverted, &equal);
 245     expect(TRUE, equal);
 246     GdipDeleteMatrix(matrix);
 247
 248     GdipCreateMatrix2(0.0006, 0, 0, 0.0006, 400, 400, &matrix);
 249     status = GdipInvertMatrix(matrix);
 250     expect(Ok, status);
 251     status = GdipGetMatrixElements(matrix, elems);
 252     expect(Ok, status);
 253     ok(compare_float(elems[0], 1666.666504, 1), "elems[0] = %.10g\n", elems[0]);
 254     ok(compare_float(elems[1], 0, 0), "elems[1] = %.10g\n", elems[1]);
 255     ok(compare_float(elems[2], 0, 0), "elems[2] = %.10g\n", elems[2]);
 256     ok(compare_float(elems[3], 1666.666504, 1), "elems[3] = %.10g\n", elems[3]);
 257     ok(compare_float(elems[4], -666666.6875, 1), "elems[4] = %.10g\n", elems[4]);
 258     ok(compare_float(elems[5], -666666.6875, 1), "elems[5] = %.10g\n", elems[5]);
 259
 260     GdipDeleteMatrix(inverted);
 261     GdipDeleteMatrix(matrix);
 262 }
 263
 264 static void test_shear(void)
 265 {
 266     GpStatus status;
 267     GpMatrix *matrix  = NULL;
 268     GpMatrix *sheared = NULL;
 269     BOOL equal;
 270
 271     /* NULL */
 272     status = GdipShearMatrix(NULL, 0.0, 0.0, MatrixOrderPrepend);
 273     expect(InvalidParameter, status);
 274
 275     /* X only shearing, MatrixOrderPrepend */
 276     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 277     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderPrepend);
 278     expect(Ok, status);
 279     GdipCreateMatrix2(1.0, 2.0, 5.5, 2.0, 6.0, 3.0, &sheared);
 280     GdipIsMatrixEqual(matrix, sheared, &equal);
 281     expect(TRUE, equal);
 282     GdipDeleteMatrix(sheared);
 283     GdipDeleteMatrix(matrix);
 284
 285     /* X only shearing, MatrixOrderAppend */
 286     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 287     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderAppend);
 288     expect(Ok, status);
 289     GdipCreateMatrix2(4.0, 2.0, 2.5, -1.0, 10.5, 3.0, &sheared);
 290     GdipIsMatrixEqual(matrix, sheared, &equal);
 291     expect(TRUE, equal);
 292     GdipDeleteMatrix(sheared);
 293     GdipDeleteMatrix(matrix);
 294
 295     /* Y only shearing, MatrixOrderPrepend */
 296     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 297     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderPrepend);
 298     expect(Ok, status);
 299     GdipCreateMatrix2(7.0, 0.5, 4.0, -1.0, 6.0, 3.0, &sheared);
 300     GdipIsMatrixEqual(matrix, sheared, &equal);
 301     expect(TRUE, equal);
 302     GdipDeleteMatrix(sheared);
 303     GdipDeleteMatrix(matrix);
 304
 305     /* Y only shearing, MatrixOrderAppend */
 306     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 307     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderAppend);
 308     expect(Ok, status);
 309     GdipCreateMatrix2(1.0, 3.5, 4.0, 5.0, 6.0, 12.0, &sheared);
 310     GdipIsMatrixEqual(matrix, sheared, &equal);
 311     expect(TRUE, equal);
 312     GdipDeleteMatrix(sheared);
 313     GdipDeleteMatrix(matrix);
 314
 315     /* X,Y shearing, MatrixOrderPrepend */
 316     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 317     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderPrepend);
 318     expect(Ok, status);
 319     GdipCreateMatrix2(7.0, 0.5, 8.0, 7.0, 6.0, 3.0, &sheared);
 320     GdipIsMatrixEqual(matrix, sheared, &equal);
 321     expect(TRUE, equal);
 322     GdipDeleteMatrix(sheared);
 323     GdipDeleteMatrix(matrix);
 324
 325     /* X,Y shearing, MatrixOrderAppend */
 326     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 327     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderAppend);
 328     expect(Ok, status);
 329     GdipCreateMatrix2(9.0, 3.5, 0.0, 5.0, 18.0, 12.0, &sheared);
 330     GdipIsMatrixEqual(matrix, sheared, &equal);
 331     expect(TRUE, equal);
 332     GdipDeleteMatrix(sheared);
 333     GdipDeleteMatrix(matrix);
 334 }
 335
 336 static void test_constructor3(void)
 337 {
 338     /* MSDN is on crack. GdipCreateMatrix3 makes a matrix that transforms the
 339      * corners of the given rectangle to the three points given. */
 340     GpMatrix *matrix;
 341     REAL values[6];
 342     GpRectF rc;
 343     GpPointF pt[3];
 344     GpStatus stat;
 345
 346     rc.X = 10;
 347     rc.Y = 10;
 348     rc.Width = 10;
 349     rc.Height = 10;
 350
 351     pt[0].X = 10;
 352     pt[0].Y = 10;
 353     pt[1].X = 20;
 354     pt[1].Y = 10;
 355     pt[2].X = 10;
 356     pt[2].Y = 20;
 357
 358     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 359     expect(Ok, stat);
 360
 361     stat = GdipGetMatrixElements(matrix, values);
 362     expect(Ok, stat);
 363
 364     expectf(1.0, values[0]);
 365     expectf(0.0, values[1]);
 366     expectf(0.0, values[2]);
 367     expectf(1.0, values[3]);
 368     expectf(0.0, values[4]);
 369     expectf(0.0, values[5]);
 370
 371     GdipDeleteMatrix(matrix);
 372
 373     pt[0].X = 20;
 374     pt[0].Y = 10;
 375     pt[1].X = 40;
 376     pt[1].Y = 10;
 377     pt[2].X = 20;
 378     pt[2].Y = 20;
 379
 380     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 381     expect(Ok, stat);
 382
 383     stat = GdipGetMatrixElements(matrix, values);
 384     expect(Ok, stat);
 385
 386     expectf(2.0, values[0]);
 387     expectf(0.0, values[1]);
 388     expectf(0.0, values[2]);
 389     expectf(1.0, values[3]);
 390     expectf(0.0, values[4]);
 391     expectf(0.0, values[5]);
 392
 393     GdipDeleteMatrix(matrix);
 394
 395     pt[0].X = 10;
 396     pt[0].Y = 20;
 397     pt[1].X = 20;
 398     pt[1].Y = 30;
 399     pt[2].X = 10;
 400     pt[2].Y = 30;
 401
 402     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 403     expect(Ok, stat);
 404
 405     stat = GdipGetMatrixElements(matrix, values);
 406     expect(Ok, stat);
 407
 408     expectf(1.0, values[0]);
 409     expectf(1.0, values[1]);
 410     expectf(0.0, values[2]);
 411     expectf(1.0, values[3]);
 412     expectf(0.0, values[4]);
 413     expectf(0.0, values[5]);
 414
 415     GdipDeleteMatrix(matrix);
 416 }
 417
 418 static void test_isidentity(void)
 419 {
 420     GpMatrix *matrix;
 421     GpStatus stat;
 422     BOOL result;
 423
 424     stat = GdipIsMatrixIdentity(NULL, NULL);
 425     expect(InvalidParameter, stat);
 426
 427     stat = GdipIsMatrixIdentity(NULL, &result);
 428     expect(InvalidParameter, stat);
 429
 430     stat = GdipCreateMatrix2(1.0, 0.0, 0.0, 1.0, 0.0, 0.0, &matrix);
 431     expect(Ok, stat);
 432
 433     stat = GdipIsMatrixIdentity(matrix, NULL);
 434     expect(InvalidParameter, stat);
 435
 436     result = FALSE;
 437     stat = GdipIsMatrixIdentity(matrix, &result);
 438     expect(Ok, stat);
 439     ok(!!result, "got %d\n", result);
 440
 441     stat = GdipSetMatrixElements(matrix, 1.0, 0.0, 0.0, 1.0, 0.1, 0.0);
 442     expect(Ok, stat);
 443
 444     result = TRUE;
 445     stat = GdipIsMatrixIdentity(matrix, &result);
 446     expect(Ok, stat);
 447     ok(!result, "got %d\n", result);
 448
 449     GdipDeleteMatrix(matrix);
 450 }
 451
 452 START_TEST(matrix)
 453 {
 454     struct GdiplusStartupInput gdiplusStartupInput;
 455     ULONG_PTR gdiplusToken;
 456     HMODULE hmsvcrt;
 457     int (CDECL * _controlfp_s)(unsigned int *cur, unsigned int newval, unsigned int mask);
 458
 459     /* Enable all FP exceptions except _EM_INEXACT, which gdi32 can trigger */
 460     hmsvcrt = LoadLibraryA("msvcrt");
 461     _controlfp_s = (void*)GetProcAddress(hmsvcrt, "_controlfp_s");
 462     if (_controlfp_s) _controlfp_s(0, 0, 0x0008001e);
 463
 464     gdiplusStartupInput.GdiplusVersion              = 1;
 465     gdiplusStartupInput.DebugEventCallback          = NULL;
 466     gdiplusStartupInput.SuppressBackgroundThread    = 0;
 467     gdiplusStartupInput.SuppressExternalCodecs      = 0;
 468
 469     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 470
 471     test_constructor_destructor();
 472     test_translate();
 473     test_scale();
 474     test_transform();
 475     test_isinvertible();
 476     test_invert();
 477     test_shear();
 478     test_constructor3();
 479     test_isidentity();
 480
 481     GdiplusShutdown(gdiplusToken);
 482 }