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
  23 #include "windows.h"
  24 #include <stdio.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 void test_constructor_destructor(void)
  32 {
  33     GpStatus status;
  34     GpMatrix *matrix = NULL;
  35
  36     status = GdipCreateMatrix2(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &matrix);
  37     expect(Ok, status);
  38     ok(matrix != NULL, "Expected matrix to be initialized\n");
  39
  40     status = GdipDeleteMatrix(NULL);
  41     expect(InvalidParameter, status);
  42
  43     status = GdipDeleteMatrix(matrix);
  44     expect(Ok, status);
  45 }
  46
  47 typedef struct{
  48     REAL X;
  49     REAL Y;
  50 } real_point;
  51
  52 static real_point transform_points[] = {
  53     {1000.00, 2600.00}, /*0*/
  54     {855.00, 2390.00}, /*1*/
  55     {700.00, 2200.00}, /*2*/
  56     {565.00, 1970.00}, /*3*/
  57     {400.00, 1800.00}, /*4*/
  58     {275.00, 1550.00}, /*5*/
  59     {100.00, 1400.00}, /*6*/
  60     {-15.00, 1130.00}, /*7*/
  61     {-200.00, 1000.00}, /*8*/
  62     {-305.00, 710.00} /*9*/
  63     };
  64
  65 static void test_transform(void)
  66 {
  67     GpStatus status;
  68     GpMatrix *matrix = NULL;
  69     GpPointF pts[10];
  70     INT i;
  71     BOOL match;
  72
  73     for(i = 0; i < 10; i ++){
  74         pts[i].X = i * 5.0 * (REAL)(i % 2);
  75         pts[i].Y = 50.0 - i * 5.0;
  76     }
  77
  78     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
  79
  80     status = GdipTransformMatrixPoints(matrix, pts, 10);
  81     expect(Ok, status);
  82
  83     for(i = 0; i < 10; i ++){
  84         match = fabs(transform_points[i].X - pts[i].X) < 2.0
  85             && fabs(transform_points[i].Y -  pts[i].Y) < 2.0;
  86
  87         ok(match, "Expected #%d to be (%.2f, %.2f) but got (%.2f, %.2f)\n", i,
  88            transform_points[i].X, transform_points[i].Y, pts[i].X, pts[i].Y);
  89     }
  90
  91     GdipDeleteMatrix(matrix);
  92 }
  93
  94 static void test_isinvertible(void)
  95 {
  96     GpStatus status;
  97     GpMatrix *matrix = NULL;
  98     BOOL result;
  99
 100     /* NULL arguments */
 101     status = GdipIsMatrixInvertible(NULL, &result);
 102     expect(InvalidParameter, status);
 103     status = GdipIsMatrixInvertible((GpMatrix*)0xdeadbeef, NULL);
 104     expect(InvalidParameter, status);
 105     status = GdipIsMatrixInvertible(NULL, NULL);
 106     expect(InvalidParameter, status);
 107
 108     /* invertible */
 109     GdipCreateMatrix2(1.0, 1.2, 2.3, -1.0, 2.0, 3.0, &matrix);
 110     status = GdipIsMatrixInvertible(matrix, &result);
 111     expect(Ok, status);
 112     expect(TRUE, result);
 113     GdipDeleteMatrix(matrix);
 114
 115     /* noninvertible */
 116     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 117     status = GdipIsMatrixInvertible(matrix, &result);
 118     expect(Ok, status);
 119     expect(FALSE, result);
 120     GdipDeleteMatrix(matrix);
 121 }
 122
 123 static void test_invert(void)
 124 {
 125     GpStatus status;
 126     GpMatrix *matrix = NULL;
 127     GpMatrix *inverted = NULL;
 128     BOOL equal = FALSE;
 129
 130     /* NULL */
 131     status = GdipInvertMatrix(NULL);
 132     expect(InvalidParameter, status);
 133
 134     /* noninvertible */
 135     GdipCreateMatrix2(2.0, -1.0, 6.0, -3.0, 2.2, 3.0, &matrix);
 136     status = GdipInvertMatrix(matrix);
 137     expect(InvalidParameter, status);
 138     GdipDeleteMatrix(matrix);
 139
 140     /* invertible */
 141     GdipCreateMatrix2(3.0, -2.0, 5.0, 2.0, 6.0, 3.0, &matrix);
 142     status = GdipInvertMatrix(matrix);
 143     expect(Ok, status);
 144     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);
 145     GdipIsMatrixEqual(matrix, inverted, &equal);
 146     expect(TRUE, equal);
 147
 148     GdipDeleteMatrix(inverted);
 149     GdipDeleteMatrix(matrix);
 150 }
 151
 152 static void test_shear(void)
 153 {
 154     GpStatus status;
 155     GpMatrix *matrix  = NULL;
 156     GpMatrix *sheared = NULL;
 157     BOOL equal;
 158
 159     /* NULL */
 160     status = GdipShearMatrix(NULL, 0.0, 0.0, MatrixOrderPrepend);
 161     expect(InvalidParameter, status);
 162
 163     /* X only shearing, MatrixOrderPrepend */
 164     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 165     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderPrepend);
 166     expect(Ok, status);
 167     GdipCreateMatrix2(1.0, 2.0, 5.5, 2.0, 6.0, 3.0, &sheared);
 168     GdipIsMatrixEqual(matrix, sheared, &equal);
 169     expect(TRUE, equal);
 170     GdipDeleteMatrix(sheared);
 171     GdipDeleteMatrix(matrix);
 172
 173     /* X only shearing, MatrixOrderAppend */
 174     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 175     status = GdipShearMatrix(matrix, 1.5, 0.0, MatrixOrderAppend);
 176     expect(Ok, status);
 177     GdipCreateMatrix2(4.0, 2.0, 2.5, -1.0, 10.5, 3.0, &sheared);
 178     GdipIsMatrixEqual(matrix, sheared, &equal);
 179     expect(TRUE, equal);
 180     GdipDeleteMatrix(sheared);
 181     GdipDeleteMatrix(matrix);
 182
 183     /* Y only shearing, MatrixOrderPrepend */
 184     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 185     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderPrepend);
 186     expect(Ok, status);
 187     GdipCreateMatrix2(7.0, 0.5, 4.0, -1.0, 6.0, 3.0, &sheared);
 188     GdipIsMatrixEqual(matrix, sheared, &equal);
 189     expect(TRUE, equal);
 190     GdipDeleteMatrix(sheared);
 191     GdipDeleteMatrix(matrix);
 192
 193     /* Y only shearing, MatrixOrderAppend */
 194     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 195     status = GdipShearMatrix(matrix, 0.0, 1.5, MatrixOrderAppend);
 196     expect(Ok, status);
 197     GdipCreateMatrix2(1.0, 3.5, 4.0, 5.0, 6.0, 12.0, &sheared);
 198     GdipIsMatrixEqual(matrix, sheared, &equal);
 199     expect(TRUE, equal);
 200     GdipDeleteMatrix(sheared);
 201     GdipDeleteMatrix(matrix);
 202
 203     /* X,Y shearing, MatrixOrderPrepend */
 204     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 205     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderPrepend);
 206     expect(Ok, status);
 207     GdipCreateMatrix2(7.0, 0.5, 8.0, 7.0, 6.0, 3.0, &sheared);
 208     GdipIsMatrixEqual(matrix, sheared, &equal);
 209     expect(TRUE, equal);
 210     GdipDeleteMatrix(sheared);
 211     GdipDeleteMatrix(matrix);
 212
 213     /* X,Y shearing, MatrixOrderAppend */
 214     GdipCreateMatrix2(1.0, 2.0, 4.0, -1.0, 6.0, 3.0, &matrix);
 215     status = GdipShearMatrix(matrix, 4.0, 1.5, MatrixOrderAppend);
 216     expect(Ok, status);
 217     GdipCreateMatrix2(9.0, 3.5, 0.0, 5.0, 18.0, 12.0, &sheared);
 218     GdipIsMatrixEqual(matrix, sheared, &equal);
 219     expect(TRUE, equal);
 220     GdipDeleteMatrix(sheared);
 221     GdipDeleteMatrix(matrix);
 222 }
 223
 224 static void test_constructor3(void)
 225 {
 226     /* MSDN is on crack. GdipCreateMatrix3 makes a matrix that transforms the
 227      * corners of the given rectangle to the three points given. */
 228     GpMatrix *matrix;
 229     REAL values[6];
 230     GpRectF rc;
 231     GpPointF pt[3];
 232     GpStatus stat;
 233
 234     rc.X = 10;
 235     rc.Y = 10;
 236     rc.Width = 10;
 237     rc.Height = 10;
 238
 239     pt[0].X = 10;
 240     pt[0].Y = 10;
 241     pt[1].X = 20;
 242     pt[1].Y = 10;
 243     pt[2].X = 10;
 244     pt[2].Y = 20;
 245
 246     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 247     expect(Ok, stat);
 248
 249     stat = GdipGetMatrixElements(matrix, values);
 250     expect(Ok, stat);
 251
 252     expectf(1.0, values[0]);
 253     expectf(0.0, values[1]);
 254     expectf(0.0, values[2]);
 255     expectf(1.0, values[3]);
 256     expectf(0.0, values[4]);
 257     expectf(0.0, values[5]);
 258
 259     GdipDeleteMatrix(matrix);
 260
 261     pt[0].X = 20;
 262     pt[0].Y = 10;
 263     pt[1].X = 40;
 264     pt[1].Y = 10;
 265     pt[2].X = 20;
 266     pt[2].Y = 20;
 267
 268     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 269     expect(Ok, stat);
 270
 271     stat = GdipGetMatrixElements(matrix, values);
 272     expect(Ok, stat);
 273
 274     expectf(2.0, values[0]);
 275     expectf(0.0, values[1]);
 276     expectf(0.0, values[2]);
 277     expectf(1.0, values[3]);
 278     expectf(0.0, values[4]);
 279     expectf(0.0, values[5]);
 280
 281     GdipDeleteMatrix(matrix);
 282
 283     pt[0].X = 10;
 284     pt[0].Y = 20;
 285     pt[1].X = 20;
 286     pt[1].Y = 30;
 287     pt[2].X = 10;
 288     pt[2].Y = 30;
 289
 290     stat = GdipCreateMatrix3(&rc, pt, &matrix);
 291     expect(Ok, stat);
 292
 293     stat = GdipGetMatrixElements(matrix, values);
 294     expect(Ok, stat);
 295
 296     expectf(1.0, values[0]);
 297     expectf(1.0, values[1]);
 298     expectf(0.0, values[2]);
 299     expectf(1.0, values[3]);
 300     expectf(0.0, values[4]);
 301     expectf(0.0, values[5]);
 302
 303     GdipDeleteMatrix(matrix);}
 304
 305 START_TEST(matrix)
 306 {
 307     struct GdiplusStartupInput gdiplusStartupInput;
 308     ULONG_PTR gdiplusToken;
 309
 310     gdiplusStartupInput.GdiplusVersion              = 1;
 311     gdiplusStartupInput.DebugEventCallback          = NULL;
 312     gdiplusStartupInput.SuppressBackgroundThread    = 0;
 313     gdiplusStartupInput.SuppressExternalCodecs      = 0;
 314
 315     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 316
 317     test_constructor_destructor();
 318     test_transform();
 319     test_isinvertible();
 320     test_invert();
 321     test_shear();
 322     test_constructor3();
 323
 324     GdiplusShutdown(gdiplusToken);
 325 }