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 "gdiplus.h"
  25 #include "wine/test.h"
  26
  27 #define expect(expected, got) ok(got == expected, "Expected %.8x, got %.8x\n", expected, got)
  28
  29 static void test_constructor_destructor(void)
  30 {
  31     GpStatus status;
  32     GpMatrix *matrix = NULL;
  33
  34     status = GdipCreateMatrix2(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, &matrix);
  35     expect(Ok, status);
  36     ok(matrix != NULL, "Expected matrix to be initialized\n");
  37
  38     status = GdipDeleteMatrix(NULL);
  39     expect(InvalidParameter, status);
  40
  41     status = GdipDeleteMatrix(matrix);
  42     expect(Ok, status);
  43 }
  44
  45 typedef struct{
  46     REAL X;
  47     REAL Y;
  48 } real_point;
  49
  50 static real_point transform_points[] = {
  51     {1000.00, 2600.00}, /*0*/
  52     {855.00, 2390.00}, /*1*/
  53     {700.00, 2200.00}, /*2*/
  54     {565.00, 1970.00}, /*3*/
  55     {400.00, 1800.00}, /*4*/
  56     {275.00, 1550.00}, /*5*/
  57     {100.00, 1400.00}, /*6*/
  58     {-15.00, 1130.00}, /*7*/
  59     {-200.00, 1000.00}, /*8*/
  60     {-305.00, 710.00} /*9*/
  61     };
  62
  63 static void test_transform(void)
  64 {
  65     GpStatus status;
  66     GpMatrix *matrix = NULL;
  67     GpPointF pts[10];
  68     INT i;
  69     BOOL match;
  70
  71     for(i = 0; i < 10; i ++){
  72         pts[i].X = i * 5.0 * (REAL)(i % 2);
  73         pts[i].Y = 50.0 - i * 5.0;
  74     }
  75
  76     GdipCreateMatrix2(1.0, -2.0, 30.0, 40.0, -500.0, 600.0, &matrix);
  77
  78     status = GdipTransformMatrixPoints(matrix, pts, 10);
  79     expect(Ok, status);
  80
  81     for(i = 0; i < 10; i ++){
  82         match = fabs(transform_points[i].X - pts[i].X) < 2.0
  83             && fabs(transform_points[i].Y -  pts[i].Y) < 2.0;
  84
  85         ok(match, "Expected #%d to be (%.2f, %.2f) but got (%.2f, %.2f)\n", i,
  86            transform_points[i].X, transform_points[i].Y, pts[i].X, pts[i].Y);
  87     }
  88
  89     GdipDeleteMatrix(matrix);
  90 }
  91
  92 START_TEST(matrix)
  93 {
  94     struct GdiplusStartupInput gdiplusStartupInput;
  95     ULONG_PTR gdiplusToken;
  96
  97     gdiplusStartupInput.GdiplusVersion              = 1;
  98     gdiplusStartupInput.DebugEventCallback          = NULL;
  99     gdiplusStartupInput.SuppressBackgroundThread    = 0;
 100     gdiplusStartupInput.SuppressExternalCodecs      = 0;
 101
 102     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
 103
 104     test_constructor_destructor();
 105     test_transform();
 106
 107     GdiplusShutdown(gdiplusToken);
 108 }