/**
* @param Canvas $canvas
* @param array $args
* @return Canvas
*/
public function draw(Canvas $canvas, array $args)
{
$this->checkArgumentsValid($args);
$startRow = $args[0];
$startCol = $args[1];
if ($canvas->isPointOutOfBounds($startRow, $startCol)) {
// If the starting point is out of bounds, then draw nothing
return $canvas;
}
$endRow = $args[2];
$endCol = $args[3];
if ($canvas->isRowOutOfBounds($endRow)) {
// If the ending row is out of bounds, draw until the canvas ends
$endRow = $canvas->getWidth();
}
if ($canvas->isColumnOutOfBounds($endCol)) {
// If the ending column is out of bounds, draw until the canvas ends
$endCol = $canvas->getHeight();
}
// Draw
for ($i = $startRow; $i <= $endRow; ++$i) {
for ($j = $startCol; $j <= $endCol; ++$j) {
$canvas->markPoint($i, $j);
}
}
return $canvas;
}
public function test_it_draws_requested_horizontal_line()
{
$canvas = new Canvas(5, 9);
$initialContent = $canvas->getContent();
$args = [4, 2, 3];
$this->command->draw($canvas, $args);
$this->assertNotEquals($initialContent, $canvas->getContent());
$expectedContent = $initialContent;
for ($i = 2; $i <= 3; ++$i) {
$expectedContent[$i][4] = Canvas::POINT_MARKED;
}
$this->assertEquals($expectedContent, $canvas->getContent());
}
public function test_it_draws_requested_vertical_line()
{
$canvas = new Canvas(5, 9);
$initialContent = $canvas->getContent();
$args = [4, 2, 7];
$this->command->draw($canvas, $args);
$this->assertNotEquals($initialContent, $canvas->getContent());
$expectedContent = $initialContent;
for ($j = 2; $j <= 7; ++$j) {
$expectedContent[4][$j] = Canvas::POINT_MARKED;
}
$this->assertEquals($expectedContent, $canvas->getContent());
}
public function test_it_draws_requested_rectangle()
{
$canvas = new Canvas(5, 9);
$initialContent = $canvas->getContent();
$args = [2, 3, 4, 7];
$this->command->draw($canvas, $args);
$this->assertNotEquals($initialContent, $canvas->getContent());
$expectedContent = $initialContent;
for ($i = 2; $i <= 4; ++$i) {
for ($j = 3; $j <= 7; ++$j) {
$expectedContent[$i][$j] = Canvas::POINT_MARKED;
}
}
$this->assertEquals($expectedContent, $canvas->getContent());
}
private function clearCanvas()
{
$this->canvas->clear();
}
/**
* @dataProvider pointDataProvider
*/
public function test_it_correctly_verifies_whether_point_is_out_of_bounds($row, $column, $expected)
{
$canvas = new Canvas(3, 2);
$result = $canvas->isPointOutOfBounds($row, $column);
$this->assertEquals($expected, $result);
}
