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 <stdarg.h>
  22 #include <math.h>
  23
  24 #include "windef.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
  30 static void test_constructor_destructor(void)
  31 {
  32     GpStatus status;
  33     GpMatrix *matrix = NULL;
  34
  35     status = GdipCreateMatrix2(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &matrix);
  36     expect(Ok, status);
  37     ok(matrix != NULL, "Expected matrix to be initialized\n");
  38
  39     status = GdipDeleteMatrix(NULL);
  40     expect(InvalidParameter, status);
  41
  42     status = GdipDeleteMatrix(matrix);
  43     expect(Ok, status);
  44 }
  45
  46 typedef struct{
  47     REAL X;
  48     REAL Y;
  49 } real_point;
  50
  51 static real_point transform_points[] = {
  52     {1000.00, 2600.00}, /*0*/
  53     {855.00, 2390.00}, /*1*/
  54     {700.00, 2200.00}, /*2*/
  55     {565.00, 1970.00}, /*3*/
  56     {400.00, 1800.00}, /*4*/
  57     {275.00, 1550.00}, /*5*/
  58     {100.00, 1400.00}, /*6*/
  59     {-15.00, 1130.00}, /*7*/
  60     {-200.00, 1000.00}, /*8*/
  61     {-305.00, 710.00} /*9*/
  62     };
  63
  64 static void test_transform(void)
  65 {
  66     GpStatus status;
  67     GpMatrix *matrix = NULL;
  68     GpPointF pts[10];
  69     INT i;
  70     BOOL match;
  71
  72     for(i = 0; i < 10; i ++){
  73         pts[i].X = i * 5.0 * (REAL)(i % 2);
  74         pts[i].Y = 50.0 - i * 5.0;
  75     }
  76
  77     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
  78
  79     status = GdipTransformMatrixPoints(matrix, pts, 10);
  80     expect(Ok, status);
  81
  82     for(i = 0; i < 10; i ++){
  83         match = fabs(transform_points[i].X - pts[i].X) < 2.0
  84             && fabs(transform_points[i].Y -  pts[i].Y) < 2.0;
  85
  86         ok(match, "Expected #%d to be (%.2f, %.2f) but got (%.2f, %.2f)\n", i,
  87            transform_points[i].X, transform_points[i].Y, pts[i].X, pts[i].Y);
  88     }
  89
  90     GdipDeleteMatrix(matrix);
  91 }
  92
  93 START_TEST(matrix)
  94 {
  95     struct GdiplusStartupInput gdiplusStartupInput;
  96     ULONG_PTR gdiplusToken;
  97
  98     gdiplusStartupInput.GdiplusVersion              = 1;
  99     gdiplusStartupInput.DebugEventCallback          = NULL;
 100     gdiplusStartupInput.SuppressBackgroundThread    = 0;
 101     gdiplusStartupInput.SuppressExternalCodecs      = 0;
 102
 103     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 104
 105     test_constructor_destructor();
 106     test_transform();
 107
 108     GdiplusShutdown(gdiplusToken);
 109 }