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virtualx-engine/tests/scene/test_bit_map.h
Rémi Verschelde d95794ec8a
One Copyright Update to rule them all 
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".
2023-01-05 13:25:55 +01:00

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/**************************************************************************/
/* test_bit_map.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef TEST_BIT_MAP_H
#define TEST_BIT_MAP_H
#include "core/os/memory.h"
#include "scene/resources/bit_map.h"
#include "tests/test_macros.h"
namespace TestBitmap {
void reset_bit_map(BitMap &p_bm) {
Size2i size = p_bm.get_size();
p_bm.set_bit_rect(Rect2i(0, 0, size.width, size.height), false);
}
TEST_CASE("[BitMap] Create bit map") {
Size2i dim{ 256, 512 };
BitMap bit_map{};
bit_map.create(dim);
CHECK(bit_map.get_size() == Size2i(256, 512));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "This will go through the entire bitmask inside of bitmap, thus hopefully checking if the bitmask was correctly set up.");
ERR_PRINT_OFF
dim = Size2i(0, 256);
bit_map.create(dim);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 512), "We should still have the same dimensions as before, because the new dimension is invalid.");
dim = Size2i(512, 0);
bit_map.create(dim);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 512), "We should still have the same dimensions as before, because the new dimension is invalid.");
dim = Size2i(46341, 46341);
bit_map.create(dim);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 512), "We should still have the same dimensions as before, because the new dimension is too large (46341*46341=2147488281).");
ERR_PRINT_ON
}
TEST_CASE("[BitMap] Create bit map from image alpha") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
bit_map.create(dim);
ERR_PRINT_OFF
const Ref<Image> null_img = nullptr;
bit_map.create_from_image_alpha(null_img);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 256), "Bitmap should have its old values because bitmap creation from a nullptr should fail.");
Ref<Image> empty_img;
empty_img.instantiate();
bit_map.create_from_image_alpha(empty_img);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 256), "Bitmap should have its old values because bitmap creation from an empty image should fail.");
Ref<Image> wrong_format_img = Image::create_empty(3, 3, false, Image::Format::FORMAT_DXT1);
bit_map.create_from_image_alpha(wrong_format_img);
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 256), "Bitmap should have its old values because converting from a compressed image should fail.");
ERR_PRINT_ON
Ref<Image> img = Image::create_empty(3, 3, false, Image::Format::FORMAT_RGBA8);
img->set_pixel(0, 0, Color(0, 0, 0, 0));
img->set_pixel(0, 1, Color(0, 0, 0, 0.09f));
img->set_pixel(0, 2, Color(0, 0, 0, 0.25f));
img->set_pixel(1, 0, Color(0, 0, 0, 0.5f));
img->set_pixel(1, 1, Color(0, 0, 0, 0.75f));
img->set_pixel(1, 2, Color(0, 0, 0, 0.99f));
img->set_pixel(2, 0, Color(0, 0, 0, 1.f));
// Check different threshold values.
bit_map.create_from_image_alpha(img);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 5, "There are 5 values in the image that are smaller than the default threshold of 0.1.");
bit_map.create_from_image_alpha(img, 0.08f);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 6, "There are 6 values in the image that are smaller than the threshold of 0.08.");
bit_map.create_from_image_alpha(img, 1);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "There are no values in the image that are smaller than the threshold of 1, there is one value equal to 1, but we check for inequality only.");
}
TEST_CASE("[BitMap] Set bit") {
Size2i dim{ 256, 256 };
BitMap bit_map{};
// Setting a point before a bit map is created should not crash, because there are checks to see if we are out of bounds.
ERR_PRINT_OFF
bit_map.set_bitv(Point2i(128, 128), true);
bit_map.create(dim);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "All values should be initialized to false.");
bit_map.set_bitv(Point2i(128, 128), true);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 1, "One bit should be set to true.");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 128)) == true, "The bit at (128,128) should be set to true");
bit_map.set_bitv(Point2i(128, 128), false);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "The bit should now be set to false again");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 128)) == false, "The bit at (128,128) should now be set to false again");
bit_map.create(dim);
bit_map.set_bitv(Point2i(512, 512), true);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "Nothing should change as we were trying to edit a bit outside of the correct range.");
ERR_PRINT_ON
}
TEST_CASE("[BitMap] Get bit") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
ERR_PRINT_OFF
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 128)) == false, "Trying to access a bit outside of the BitMap's range should always return false");
bit_map.create(dim);
CHECK(bit_map.get_bitv(Point2i(128, 128)) == false);
bit_map.set_bit_rect(Rect2i(-1, -1, 257, 257), true);
// Checking that range is [0, 256).
CHECK(bit_map.get_bitv(Point2i(-1, 0)) == false);
CHECK(bit_map.get_bitv(Point2i(0, 0)) == true);
CHECK(bit_map.get_bitv(Point2i(128, 128)) == true);
CHECK(bit_map.get_bitv(Point2i(255, 255)) == true);
CHECK(bit_map.get_bitv(Point2i(256, 256)) == false);
CHECK(bit_map.get_bitv(Point2i(257, 257)) == false);
ERR_PRINT_ON
}
TEST_CASE("[BitMap] Set bit rect") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
// Although we have not setup the BitMap yet, this should not crash because we get an empty intersection inside of the method.
bit_map.set_bit_rect(Rect2i{ 0, 0, 128, 128 }, true);
bit_map.create(dim);
CHECK(bit_map.get_true_bit_count() == 0);
bit_map.set_bit_rect(Rect2i{ 0, 0, 256, 256 }, true);
CHECK(bit_map.get_true_bit_count() == 65536);
reset_bit_map(bit_map);
// Checking out of bounds handling.
ERR_PRINT_OFF
bit_map.set_bit_rect(Rect2i{ 128, 128, 256, 256 }, true);
CHECK(bit_map.get_true_bit_count() == 16384);
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i{ -128, -128, 256, 256 }, true);
CHECK(bit_map.get_true_bit_count() == 16384);
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i{ -128, -128, 512, 512 }, true);
CHECK(bit_map.get_true_bit_count() == 65536);
ERR_PRINT_ON
}
TEST_CASE("[BitMap] Get true bit count") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
CHECK(bit_map.get_true_bit_count() == 0);
bit_map.create(dim);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "Uninitialized bit map should have no true bits");
bit_map.set_bit_rect(Rect2i{ 0, 0, 256, 256 }, true);
CHECK(bit_map.get_true_bit_count() == 65536);
bit_map.set_bitv(Point2i{ 0, 0 }, false);
CHECK(bit_map.get_true_bit_count() == 65535);
bit_map.set_bit_rect(Rect2i{ 0, 0, 256, 256 }, false);
CHECK(bit_map.get_true_bit_count() == 0);
}
TEST_CASE("[BitMap] Get size") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
CHECK_MESSAGE(bit_map.get_size() == Size2i(0, 0), "Uninitialized bit map should have a size of 0x0");
bit_map.create(dim);
CHECK(bit_map.get_size() == Size2i(256, 256));
ERR_PRINT_OFF
bit_map.create(Size2i(-1, 0));
ERR_PRINT_ON
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 256), "Invalid size should not be accepted by create");
bit_map.create(Size2i(256, 128));
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 128), "Bitmap should have updated size");
}
TEST_CASE("[BitMap] Resize") {
const Size2i dim{ 128, 128 };
BitMap bit_map{};
bit_map.resize(dim);
CHECK(bit_map.get_size() == dim);
bit_map.create(dim);
bit_map.set_bit_rect(Rect2i(0, 0, 10, 10), true);
bit_map.set_bit_rect(Rect2i(118, 118, 10, 10), true);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 200, "There should be 100 bits in the top left corner, and 100 bits in the bottom right corner");
bit_map.resize(Size2i(64, 64));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 50, "There should be 25 bits in the top left corner, and 25 bits in the bottom right corner");
bit_map.create(dim);
ERR_PRINT_OFF
bit_map.resize(Size2i(-1, 128));
ERR_PRINT_ON
CHECK_MESSAGE(bit_map.get_size() == Size2i(128, 128), "When an invalid size is given the bit map will keep its size");
bit_map.create(dim);
bit_map.set_bit_rect(Rect2i(0, 0, 10, 10), true);
bit_map.set_bit_rect(Rect2i(118, 118, 10, 10), true);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 200, "There should be 100 bits in the top left corner, and 100 bits in the bottom right corner");
bit_map.resize(Size2i(256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 800, "There should still be 100 bits in the bottom right corner, and all new bits should be initialized to false");
CHECK_MESSAGE(bit_map.get_size() == Size2i(256, 256), "The bitmap should now be 256x256");
}
TEST_CASE("[BitMap] Grow and shrink mask") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
ERR_PRINT_OFF
bit_map.grow_mask(100, Rect2i(0, 0, 128, 128)); // Check if method does not crash when working with an uninitialized bit map.
ERR_PRINT_ON
CHECK_MESSAGE(bit_map.get_size() == Size2i(0, 0), "Size should still be equal to 0x0");
bit_map.create(dim);
bit_map.set_bit_rect(Rect2i(96, 96, 64, 64), true);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 4096, "Creating a square of 64x64 should be 4096 bits");
bit_map.grow_mask(0, Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 4096, "Growing with size of 0 should not change any bits");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(96, 96, 64, 64), true);
CHECK_MESSAGE(bit_map.get_bitv(Point2i(95, 128)) == false, "Bits just outside of the square should not be set");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(160, 128)) == false, "Bits just outside of the square should not be set");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 95)) == false, "Bits just outside of the square should not be set");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 160)) == false, "Bits just outside of the square should not be set");
bit_map.grow_mask(1, Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 4352, "We should have 4*64 (perimeter of square) more bits set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(95, 128)) == true, "Bits that were just outside of the square should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(160, 128)) == true, "Bits that were just outside of the square should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 95)) == true, "Bits that were just outside of the square should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(128, 160)) == true, "Bits that were just outside of the square should now be set to true");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(127, 127, 1, 1), true);
CHECK(bit_map.get_true_bit_count() == 1);
bit_map.grow_mask(32, Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 3209, "Creates a circle around the initial bit with a radius of 32 bits. Any bit that has a distance within this radius will be set to true");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(127, 127, 1, 1), true);
for (int i = 0; i < 32; i++) {
bit_map.grow_mask(1, Rect2i(0, 0, 256, 256));
}
CHECK_MESSAGE(bit_map.get_true_bit_count() == 2113, "Creates a diamond around the initial bit with diagonals that are 65 bits long.");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(123, 123, 10, 10), true);
CHECK(bit_map.get_true_bit_count() == 100);
bit_map.grow_mask(-11, Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 0, "Shrinking by more than the width of the square should totally remove it.");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(96, 96, 64, 64), true);
CHECK_MESSAGE(bit_map.get_bitv(Point2i(96, 129)) == true, "Bits on the edge of the square should be true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(159, 129)) == true, "Bits on the edge of the square should be true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(129, 96)) == true, "Bits on the edge of the square should be true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(129, 159)) == true, "Bits on the edge of the square should be true");
bit_map.grow_mask(-1, Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(bit_map.get_true_bit_count() == 3844, "Shrinking by 1 should set 4*63=252 bits to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(96, 129)) == false, "Bits that were on the edge of the square should now be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(159, 129)) == false, "Bits that were on the edge of the square should now be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(129, 96)) == false, "Bits that were on the edge of the square should now be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(129, 159)) == false, "Bits that were on the edge of the square should now be set to false");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(125, 125, 1, 6), true);
bit_map.set_bit_rect(Rect2i(130, 125, 1, 6), true);
bit_map.set_bit_rect(Rect2i(125, 130, 6, 1), true);
CHECK(bit_map.get_true_bit_count() == 16);
CHECK_MESSAGE(bit_map.get_bitv(Point2i(125, 131)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(131, 131)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(125, 124)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(130, 124)) == false, "Bits that are on the edge of the shape should be set to false");
bit_map.grow_mask(1, Rect2i(0, 0, 256, 256));
CHECK(bit_map.get_true_bit_count() == 48);
CHECK_MESSAGE(bit_map.get_bitv(Point2i(125, 131)) == true, "Bits that were on the edge of the shape should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(131, 130)) == true, "Bits that were on the edge of the shape should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(125, 124)) == true, "Bits that were on the edge of the shape should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(130, 124)) == true, "Bits that were on the edge of the shape should now be set to true");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(124, 124)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(126, 124)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(124, 131)) == false, "Bits that are on the edge of the shape should be set to false");
CHECK_MESSAGE(bit_map.get_bitv(Point2i(131, 131)) == false, "Bits that are on the edge of the shape should be set to false");
}
TEST_CASE("[BitMap] Blit") {
Point2i blit_pos{ 128, 128 };
Point2i bit_map_size{ 256, 256 };
Point2i blit_size{ 32, 32 };
BitMap bit_map{};
Ref<BitMap> blit_bit_map{};
// Testing null reference to blit bit map.
ERR_PRINT_OFF
bit_map.blit(blit_pos, blit_bit_map);
ERR_PRINT_ON
blit_bit_map.instantiate();
// Testing if uninitialized blit bit map and uninitialized bit map does not crash
bit_map.blit(blit_pos, blit_bit_map);
// Testing if uninitialized bit map does not crash
blit_bit_map->create(blit_size);
bit_map.blit(blit_pos, blit_bit_map);
// Testing if uninitialized bit map does not crash
blit_bit_map.unref();
blit_bit_map.instantiate();
CHECK_MESSAGE(blit_bit_map->get_size() == Point2i(0, 0), "Size should be cleared by unref and instance calls.");
bit_map.create(bit_map_size);
bit_map.blit(Point2i(128, 128), blit_bit_map);
// Testing if both initialized does not crash.
blit_bit_map->create(blit_size);
bit_map.blit(blit_pos, blit_bit_map);
bit_map.set_bit_rect(Rect2i{ 127, 127, 3, 3 }, true);
CHECK(bit_map.get_true_bit_count() == 9);
bit_map.blit(Point2i(112, 112), blit_bit_map);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 9, "No bits should have been changed, as the blit bit map only contains falses");
bit_map.create(bit_map_size);
blit_bit_map->create(blit_size);
blit_bit_map->set_bit_rect(Rect2i(15, 15, 3, 3), true);
CHECK(blit_bit_map->get_true_bit_count() == 9);
CHECK(bit_map.get_true_bit_count() == 0);
bit_map.blit(Point2i(112, 112), blit_bit_map);
CHECK_MESSAGE(bit_map.get_true_bit_count() == 9, "All true bits should have been moved to the bit map");
for (int x = 127; x < 129; ++x) {
for (int y = 127; y < 129; ++y) {
CHECK_MESSAGE(bit_map.get_bitv(Point2i(x, y)) == true, "All true bits should have been moved to the bit map");
}
}
}
TEST_CASE("[BitMap] Convert to image") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
Ref<Image> img;
ERR_PRINT_OFF
img = bit_map.convert_to_image();
ERR_PRINT_ON
CHECK_MESSAGE(img.is_valid(), "We should receive a valid Image Object even if BitMap is not created yet");
CHECK_MESSAGE(img->get_format() == Image::FORMAT_L8, "We should receive a valid Image Object even if BitMap is not created yet");
CHECK_MESSAGE(img->get_size() == (Size2i(0, 0)), "Image should have no width or height, because BitMap has not yet been created");
bit_map.create(dim);
img = bit_map.convert_to_image();
CHECK_MESSAGE(img->get_size() == dim, "Image should have the same dimensions as the BitMap");
CHECK_MESSAGE(img->get_pixel(0, 0).is_equal_approx(Color(0, 0, 0)), "BitMap is initialized to all 0's, so Image should be all black");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(0, 0, 128, 128), true);
img = bit_map.convert_to_image();
CHECK_MESSAGE(img->get_pixel(0, 0).is_equal_approx(Color(1, 1, 1)), "BitMap's top-left quadrant is all 1's, so Image should be white");
CHECK_MESSAGE(img->get_pixel(255, 255).is_equal_approx(Color(0, 0, 0)), "All other quadrants were 0's, so these should be black");
}
TEST_CASE("[BitMap] Clip to polygon") {
const Size2i dim{ 256, 256 };
BitMap bit_map{};
Vector<Vector<Vector2>> polygons;
ERR_PRINT_OFF
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 128, 128));
ERR_PRINT_ON
CHECK_MESSAGE(polygons.size() == 0, "We should have no polygons, because the BitMap was not initialized");
bit_map.create(dim);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 128, 128));
CHECK_MESSAGE(polygons.size() == 0, "We should have no polygons, because the BitMap was all 0's");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(0, 0, 64, 64), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 128, 128));
CHECK_MESSAGE(polygons.size() == 1, "We should have exactly 1 polygon");
CHECK_MESSAGE(polygons[0].size() == 4, "The polygon should have exactly 4 points");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(0, 0, 32, 32), true);
bit_map.set_bit_rect(Rect2i(64, 64, 32, 32), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 128, 128));
CHECK_MESSAGE(polygons.size() == 2, "We should have exactly 2 polygons");
CHECK_MESSAGE(polygons[0].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[1].size() == 4, "The polygon should have exactly 4 points");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(124, 112, 8, 32), true);
bit_map.set_bit_rect(Rect2i(112, 124, 32, 8), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(polygons.size() == 1, "We should have exactly 1 polygon");
CHECK_MESSAGE(polygons[0].size() == 12, "The polygon should have exactly 12 points");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(124, 112, 8, 32), true);
bit_map.set_bit_rect(Rect2i(112, 124, 32, 8), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 128, 128));
CHECK_MESSAGE(polygons.size() == 1, "We should have exactly 1 polygon");
CHECK_MESSAGE(polygons[0].size() == 6, "The polygon should have exactly 6 points");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(0, 0, 64, 64), true);
bit_map.set_bit_rect(Rect2i(64, 64, 64, 64), true);
bit_map.set_bit_rect(Rect2i(192, 128, 64, 64), true);
bit_map.set_bit_rect(Rect2i(128, 192, 64, 64), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 256, 256));
CHECK_MESSAGE(polygons.size() == 4, "We should have exactly 4 polygons");
CHECK_MESSAGE(polygons[0].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[1].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[2].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[3].size() == 4, "The polygon should have exactly 4 points");
reset_bit_map(bit_map);
bit_map.set_bit(0, 0, true);
bit_map.set_bit(2, 0, true);
bit_map.set_bit_rect(Rect2i(1, 1, 1, 2), true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 3, 3));
CHECK_MESSAGE(polygons.size() == 3, "We should have exactly 3 polygons");
CHECK_MESSAGE(polygons[0].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[1].size() == 4, "The polygon should have exactly 4 points");
CHECK_MESSAGE(polygons[2].size() == 4, "The polygon should have exactly 4 points");
reset_bit_map(bit_map);
bit_map.set_bit_rect(Rect2i(0, 0, 2, 1), true);
bit_map.set_bit_rect(Rect2i(0, 2, 3, 1), true);
bit_map.set_bit(0, 1, true);
bit_map.set_bit(2, 1, true);
polygons = bit_map.clip_opaque_to_polygons(Rect2i(0, 0, 4, 4));
CHECK_MESSAGE(polygons.size() == 1, "We should have exactly 1 polygon");
CHECK_MESSAGE(polygons[0].size() == 6, "The polygon should have exactly 6 points");
}
} // namespace TestBitmap
#endif // TEST_BIT_MAP_H
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