Exemplos de compareRectangles em C++ (Cpp)

Exemplo n.º 1

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r3(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r3 = {150, 151, 250, 251};
	RECTANGLE_16 r1_r3[] =
	{
		{  0, 101, 200, 151},
		{  0, 151, 250, 201},
		{150, 201, 250, 251}
	};
	region16_init(&region);
	/*
	 * +===============================================================
	 * |
	 * |+-----+                +-----+
	 * || r1  |                |     |
	 * ||   +-+------+         +-----+--------+
	 * ||   |    r3  |         |              |
	 * |+---+        | ====>   +-----+--------+
	 * |    |        |               |        |
	 * |    +--------+               +--------+
	 */

	/* R1 + R3  */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r3))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 3 || !compareRectangles(rects, r1_r3, nbRects))
		goto out;

	/* R3 + R1  */
	region16_clear(&region);

	if (!region16_union_rect(&region, &region, &r3))
		goto out;

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 3 || !compareRectangles(rects, r1_r3, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 2

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_empty_rectangle(void)
{
	REGION16 region, intersection;
	int retCode = -1;
	int i;
	RECTANGLE_16 emptyRectangles[3] =
	{
		{   0,    0,    0,    0},
		{  10,   10,   10,   11},
		{  10,   10,   11,   10}
	};
	RECTANGLE_16 firstRect =
	{
		0, 0, 100, 100
	};
	RECTANGLE_16 anotherRect =
	{
		100, 100,  200,  200
	};
	RECTANGLE_16 expected_inter_extents =
	{
		0, 0, 0, 0
	};
	region16_init(&region);
	region16_init(&intersection);

	/* Check for empty rectangles */
	for (i = 0; i < 3; i++)
	{
		if (!rectangle_is_empty(&emptyRectangles[i]))
			goto out;
	}

	/* Check for non-empty rectangles */
	if (rectangle_is_empty(&firstRect))
		goto out;

	/* Intersect 2 non-intersect rectangle, result should be empty */
	if (!region16_union_rect(&region, &region, &firstRect))
		goto out;

	if (!region16_intersect_rect(&region, &region, &anotherRect))
		goto out;

	if (!compareRectangles(region16_extents(&region), &expected_inter_extents, 1))
		goto out;

	if (!region16_is_empty(&region))
		goto out;

	if (!rectangle_is_empty(region16_extents(&intersection)))
		goto out;

	retCode = 0;
out:
	region16_uninit(&intersection);
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 3

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r3_inter_r11(void)
{
	REGION16 region, intersection;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r3 = {150, 151, 250, 251};
	RECTANGLE_16 r11 = {170, 151, 600, 301};
	RECTANGLE_16 r1_r3_inter_r11[] =
	{
		{170, 151, 250, 251},
	};
	region16_init(&region);
	region16_init(&intersection);

	/*
	 * +===============================================================
	 * |
	 * |+-----+
	 * ||     |
	 * ||     +------+
	 * || r1+r3      |          (r1+r3) & r11
	 * ||     +----------------+             +--------+
	 * |+---+ |      |         |   ====>     |        |
	 * |    | |      |         |             |        |
	 * |    | |      |         |             |        |
	 * |    +-|------+         |             +--------+
	 * |      |            r11 |
	 * |      +----------------+
	 *
	 *
	 * R1+R3 is made of 3 bands, R11 overlap the second and the third band. The
	 * intersection is made of two band that must be reassembled to give only
	 * one
	 */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r3))
		goto out;

	if (!region16_intersects_rect(&region, &r11))
		goto out;

	if (!region16_intersect_rect(&intersection, &region, &r11))
		goto out;

	rects = region16_rects(&intersection, &nbRects);

	if (!rects || nbRects != 1 || !compareRectangles(rects, r1_r3_inter_r11, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&intersection);
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 4

Arquivo: TestFreeRDPRegion.c Projeto: 10084462/FreeRDP

static int test_norbert_case() {
	REGION16 region, intersection;
	int retCode = -1;
	const RECTANGLE_16 *rects;
	int nbRects, i;

	RECTANGLE_16 inRectangles[5] = {
			{1680,    0, 1920,  242},
			{ 294,  242,  971,  776},
			{1680,  242, 1920,  776},
			{1680,  776, 1920, 1036},
			{   2, 1040,   53, 1078}
	};

	RECTANGLE_16 screenRect = {
		0, 0, 1920, 1080
	};
	RECTANGLE_16 expected_inter_extents = {
		0, 0, 1920, 1078
	};

	region16_init(&region);
	region16_init(&intersection);

	for (i = 0; i < 5; i++)
	{
		if (!region16_union_rect(&region, &region, &inRectangles[i]))
			goto out;
	}

	if (!region16_intersect_rect(&intersection, &region, &screenRect))
		goto out;
	rects = region16_rects(&intersection, &nbRects);
	if (!rects || nbRects != 5 || !compareRectangles(rects, inRectangles, nbRects))
		goto out;

	if (!compareRectangles(region16_extents(&intersection), &expected_inter_extents, 1) )
		goto out;

	retCode = 0;
out:
	region16_uninit(&intersection);
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 5

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_from_weston(void)
{
	/*
	 * 0: 0,0 -> 640,32 (w=640 h=32)
	 * 1: 236,169 -> 268,201 (w=32 h=32)
	 * 2: 246,258 -> 278,290 (w=32 h=32)
	 */
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0,   0, 640,  32};
	RECTANGLE_16 r2 = {236, 169, 268, 201};
	RECTANGLE_16 r3 = {246, 258, 278, 290};
	RECTANGLE_16 r1_r2_r3[] =
	{
		{  0,   0, 640,  32},
		{236, 169, 268, 201},
		{246, 258, 278, 290}
	};
	region16_init(&region);

	/*
	 * +===============================================================
	 * |+-------------------------------------------------------------+
	 * ||              r1                                             |
	 * |+-------------------------------------------------------------+
	 * |
	 * |       +---------------+
	 * |       |     r2        |
	 * |       +---------------+
	 * |
	 * |         +---------------+
	 * |         |     r3        |
	 * |         +---------------+
	 * |
	 */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r2))
		goto out;

	if (!region16_union_rect(&region, &region, &r3))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 3 || !compareRectangles(rects, r1_r2_r3, 3))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 6

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r2_r4(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r2 = {150, 301, 250, 401};
	RECTANGLE_16 r4 = {150, 251, 250, 301};
	RECTANGLE_16 r1_r2_r4[] =
	{
		{  0, 101, 200, 201},
		{150, 251, 250, 401}
	};
	/*
	 * +===============================================================
	 * |
	 * |+-----+                +-----+
	 * || r1  |                |     |
	 * ||     |                |     |
	 * ||     |                |     |
	 * |+-----+        ====>   +-----+
	 * |
	 * |    +--------+               +--------+
	 * |    |   r4   |               |        |
	 * |    +--------+               |        |
	 * |    | r2     |               |        |
	 * |    |        |               |        |
	 * |    +--------+               +--------+
	 *
	 */
	region16_init(&region);

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r2))
		goto out;

	if (!region16_union_rect(&region, &region, &r4))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 2 || !compareRectangles(rects, r1_r2_r4, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 7

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_basic(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	/* R1 + R2 ==> disjointed rects */
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r2 = {150, 301, 250, 401};
	RECTANGLE_16 r1_r2[] =
	{
		{0,   101, 200, 201},
		{150, 301, 250, 401}
	};
	/* r1 */
	region16_init(&region);

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 1 || memcmp(rects, &r1, sizeof(RECTANGLE_16)))
		goto out;

	/* r1 + r2 */
	if (!region16_union_rect(&region, &region, &r2))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 2 || !compareRectangles(rects, r1_r2, nbRects))
		goto out;

	/* clear region */
	region16_clear(&region);
	region16_rects(&region, &nbRects);

	if (nbRects)
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 8

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r5(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r5 = {150, 121, 300, 131};
	RECTANGLE_16 r1_r5[] =
	{
		{  0, 101, 200, 121},
		{  0, 121, 300, 131},
		{  0, 131, 200, 201}
	};
	region16_init(&region);

	/*
	 * +===============================================================
	 * |
	 * |+--------+               +--------+
	 * || r1     |               |        |
	 * ||     +--+----+          +--------+----+
	 * ||     |  r5   |  =====>  |             |
	 * ||     +-------+          +--------+----+
	 * ||        |               |        |
	 * |+--------+               +--------+
	 * |
	 *
	 */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r5))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 3 || !compareRectangles(rects, r1_r5, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 9

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r9_r10(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	/*
	 * +===============================================================
	 * |
	 * |   +---+                +---+
	 * |+--|r10|-+           +--+---+-+
	 * ||r9|   | |           |        |
	 * ||  |   | |           |        |
	 * ||  |   | |  =====>   |        |
	 * ||  |   | |           |        |
	 * ||  |   | |           |        |
	 * |+--|   |-+           +--+---+-+
	 * |   +---+                +---+
	 */
	RECTANGLE_16 r9 = {  0, 100, 400, 200};
	RECTANGLE_16 r10 = {200,  0, 300, 300};
	RECTANGLE_16 r9_r10[] =
	{
		{200,   0, 300, 100},
		{  0, 100, 400, 200},
		{200, 200, 300, 300},
	};
	region16_init(&region);

	if (!region16_union_rect(&region, &region, &r9))
		goto out;

	if (!region16_union_rect(&region, &region, &r10))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 3 || !compareRectangles(rects, r9_r10, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 10

Arquivo: TestFreeRDPRegion.c Projeto: 10084462/FreeRDP

static int test_r1_inter_r3() {
	REGION16 region, intersection;
	int retCode = -1;
	const RECTANGLE_16 *rects;
	int nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r3 = {150, 151, 250, 251};

	RECTANGLE_16 r1_inter_r3[] = {
		{150, 151, 200, 201},
	};

	region16_init(&region);
	region16_init(&intersection);

	/*
	 * +===============================================================
	 * |
	 * |+-----+
	 * || r1  |
	 * ||   +-+------+             +-+
	 * ||   |    r3  | r1&r3       | |
	 * |+---+        | ====>       +-+
	 * |    |        |
	 * |    +--------+
	 */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;
	if (!region16_intersects_rect(&region, &r3))
		goto out;

	if (!region16_intersect_rect(&intersection, &region, &r3))
		goto out;
	rects = region16_rects(&intersection, &nbRects);
	if (!rects || nbRects != 1 || !compareRectangles(rects, r1_inter_r3, nbRects))
		goto out;


	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 11

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r6(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r6 = {150, 121, 170, 131};
	region16_init(&region);
	/*
	 * +===============================================================
	 * |
	 * |+--------+           +--------+
	 * || r1     |           |        |
	 * ||   +--+ |           |        |
	 * ||   |r6| |  =====>   |        |
	 * ||   +--+ |           |        |
	 * ||        |           |        |
	 * |+--------+           +--------+
	 * |
	 */
	region16_clear(&region);

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r6))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 1 || !compareRectangles(rects, &r1, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 12

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_norbert2_case(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects = 0;
	RECTANGLE_16 rect1 = {  464, 696,   476,  709 };
	RECTANGLE_16 rect2 = {    0,   0,  1024,   32 };
	region16_init(&region);

	if (!region16_union_rect(&region, &region, &rect1))
	{
		fprintf(stderr, "%s: Error 1 - region16_union_rect failed\n", __FUNCTION__);
		goto out;
	}

	if (!(rects = region16_rects(&region, &nbRects)))
	{
		fprintf(stderr, "%s: Error 2 - region16_rects failed\n", __FUNCTION__);
		goto out;
	}

	if (nbRects != 1)
	{
		fprintf(stderr, "%s: Error 3 - expected nbRects == 1 but got %"PRIu32"\n", __FUNCTION__, nbRects);
		goto out;
	}

	if (!compareRectangles(&rects[0], &rect1, 1))
	{
		fprintf(stderr, "%s: Error 4 - compare failed\n", __FUNCTION__);
		goto out;
	}

	if (!region16_union_rect(&region, &region, &rect2))
	{
		fprintf(stderr, "%s: Error 5 - region16_union_rect failed\n", __FUNCTION__);
		goto out;
	}

	if (!(rects = region16_rects(&region, &nbRects)))
	{
		fprintf(stderr, "%s: Error 6 - region16_rects failed\n", __FUNCTION__);
		goto out;
	}

	if (nbRects != 2)
	{
		fprintf(stderr, "%s: Error 7 - expected nbRects == 2 but got %"PRIu32"\n", __FUNCTION__, nbRects);
		goto out;
	}

	if (!compareRectangles(&rects[0], &rect2, 1))
	{
		fprintf(stderr, "%s: Error 8 - compare failed\n", __FUNCTION__);
		goto out;
	}

	if (!compareRectangles(&rects[1], &rect1, 1))
	{
		fprintf(stderr, "%s: Error 9 - compare failed\n", __FUNCTION__);
		goto out;
	}

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 13

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_norbert_case(void)
{
	REGION16 region, intersection;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects, i;
	RECTANGLE_16 inRectangles[5] =
	{
		{1680,    0, 1920,  242},
		{ 294,  242,  971,  776},
		{1680,  242, 1920,  776},
		{1680,  776, 1920, 1036},
		{   2, 1040,   53, 1078}
	};
	RECTANGLE_16 screenRect =
	{
		0, 0, 1920, 1080
	};
	RECTANGLE_16 expected_inter_extents =
	{
		2, 0, 1920, 1078
	};
	region16_init(&region);
	region16_init(&intersection);

	/*
	 * Consider following as a screen with resolution 1920*1080
	 *      | |    |     |           |               |      |
	 *      | |2   |53   |294        |971            |1680  |
	 *      | |    |     |           |               |      |
	 *    0 +=+======================================+======+
	 *      | |                                      |      |
	 *      |                                        |  R[0]|
	 *  242 |            +-----------+               +------+
	 *      | |          |           |               |      |
	 *      |            |           |               |      |
	 *      |            |       R[1]|               |  R[2]|
	 *  776 | |          +-----------+               +------+
	 *      |                                        |      |
	 *      |                                        |  R[3]|
	 * 1036 | |                                      +------+
	 * 1040 | +----+
	 *      | |R[4]|                         Union of R[0-4]|
	 * 1078 | +----+    -    -    -    -    -    -    -    -+
	 * 1080 |
	 *
	 *
	 * The result is union of R[0] - R[4].
	 * After intersected with the full screen rect, the
	 * result should keep the same.
	 */
	for (i = 0; i < 5; i++)
	{
		if (!region16_union_rect(&region, &region, &inRectangles[i]))
			goto out;
	}

	if (!compareRectangles(region16_extents(&region), &expected_inter_extents, 1))
		goto out;

	if (!region16_intersect_rect(&intersection, &region, &screenRect))
		goto out;

	rects = region16_rects(&intersection, &nbRects);

	if (!rects || nbRects != 5 || !compareRectangles(rects, inRectangles, nbRects))
		goto out;

	if (!compareRectangles(region16_extents(&intersection), &expected_inter_extents, 1))
		goto out;

	retCode = 0;
out:
	region16_uninit(&intersection);
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 14

Arquivo: TestFreeRDPRegion.c Projeto: FreeRDP/FreeRDP

static int test_r1_r7_r8(void)
{
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16* rects;
	UINT32 nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r7 = {300, 101, 500, 201};
	RECTANGLE_16 r8 = {150, 121, 400, 131};
	RECTANGLE_16 r1_r7_r8[] =
	{
		{  0, 101, 200, 121},
		{300, 101, 500, 121},
		{  0, 121, 500, 131},
		{  0, 131, 200, 201},
		{300, 131, 500, 201},
	};
	/*
	 * +===============================================================
	 * |
	 * |+--------+   +--------+           +--------+   +--------+
	 * || r1     |   | r7     |           |        |   |        |
	 * ||   +------------+    |           +--------+---+--------+
	 * ||   |   r8       |    |   =====>  |                     |
	 * ||   +------------+    |           +--------+---+--------+
	 * ||        |   |        |           |        |   |        |
	 * |+--------+   +--------+           +--------+   +--------+
	 * |
	 */
	region16_init(&region);

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r7))
		goto out;

	if (!region16_union_rect(&region, &region, &r8))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 5 || !compareRectangles(rects, r1_r7_r8, nbRects))
		goto out;

	region16_clear(&region);

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	if (!region16_union_rect(&region, &region, &r8))
		goto out;

	if (!region16_union_rect(&region, &region, &r7))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 5 || !compareRectangles(rects, r1_r7_r8, nbRects))
		goto out;

	region16_clear(&region);

	if (!region16_union_rect(&region, &region, &r8))
		goto out;

	if (!region16_union_rect(&region, &region, &r7))
		goto out;

	if (!region16_union_rect(&region, &region, &r1))
		goto out;

	rects = region16_rects(&region, &nbRects);

	if (!rects || nbRects != 5 || !compareRectangles(rects, r1_r7_r8, nbRects))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}

Exemplo n.º 15

Arquivo: TestFreeRDPRegion.c Projeto: 10084462/FreeRDP

static int test_r1_r2_r3_r4() {
	REGION16 region;
	int retCode = -1;
	const RECTANGLE_16 *rects;
	int nbRects;
	RECTANGLE_16 r1 = {  0, 101, 200, 201};
	RECTANGLE_16 r2 = {150, 301, 250, 401};
	RECTANGLE_16 r3 = {150, 151, 250, 251};
	RECTANGLE_16 r4 = {150, 251, 250, 301};

	RECTANGLE_16 r1_r2_r3[] = {
		{  0, 101, 200, 151},
		{  0, 151, 250, 201},
		{150, 201, 250, 251},
		{150, 301, 250, 401}
	};

	RECTANGLE_16 r1_r2_r3_r4[] = {
		{  0, 101, 200, 151},
		{  0, 151, 250, 201},
		{150, 201, 250, 401}
	};

	region16_init(&region);
	/*
	 * +===============================================================
	 * |
	 * |+-----+                +-----+
	 * || r1  |                |     |
	 * ||   +-+------+         +-----+--------+
	 * ||   |    r3  |         |              |
	 * |+---+        | ====>   +-----+--------+
	 * |    |        |               |        |
	 * |    +--------+               +--------+
	 * |    +--------+               +--------+
	 * |    | r2     |               |        |
	 * |    |        |               |        |
	 * |    +--------+               +--------+
	 */
	if (!region16_union_rect(&region, &region, &r1))
		goto out;
	if (!region16_union_rect(&region, &region, &r2))
		goto out;
	if (!region16_union_rect(&region, &region, &r3))
		goto out;
	rects = region16_rects(&region, &nbRects);
	if (!rects || nbRects != 4 || !compareRectangles(rects, r1_r2_r3, 4))
		goto out;

	/*
	 * +===============================================================
	 * |
	 * |+-----+                 +-----+
	 * ||     |                 |     |
 	 * |+-----+--------+        +-----+--------+
	 * ||              |  ==>   |              |
	 * |+-----+--------+        +-----+--------+
	 * |  	  |        |              |        |
	 * |  	  +--------+              |        |
	 * |      |  + r4  |              |        |
	 * |  	  +--------+              |        |
	 * |  	  |        |              |        |
	 * |  	  |        |              |        |
	 * |  	  +--------+              +--------+
	 */
	if (!region16_union_rect(&region, &region, &r4))
		goto out;
	rects = region16_rects(&region, &nbRects);
	if (!rects || nbRects != 3 || !compareRectangles(rects, r1_r2_r3_r4, 3))
		goto out;

	retCode = 0;
out:
	region16_uninit(&region);
	return retCode;
}