public static function isPointOnLine($point, $line)
{
$dx = $line->point1->x - $line->point2->x;
$dy = $line->point1->y - $line->point2->y;
$dz = $line->point1->z - $line->point2->z;
// Create array of p
$p = array();
if (!Constant::isNumbersEqual($dx, 0)) {
$p[] = ($point->x - $line->point2->x) / $dx;
} else {
// X coordinate of all point must be same
if (!Constant::isNumbersEqual($point->x, $line->point1->x)) {
return 0;
}
}
if (!Constant::isNumbersEqual($dy, 0)) {
$p[] = ($point->y - $line->point2->y) / $dy;
} else {
// Y coordinate of all point must be same
if (!Constant::isNumbersEqual($point->y, $line->point1->y)) {
return 0;
}
}
if (!Constant::isNumbersEqual($dz, 0)) {
$p[] = ($point->z - $line->point2->z) / $dz;
} else {
// Z coordinate of all point must be same
if (!Constant::isNumbersEqual($point->z, $line->point1->z)) {
return 0;
}
}
// CASE 4
if (count($p) == 0) {
return 4;
}
// All members in p array must be same
$isEqual = TRUE;
if (count($p) > 1) {
for ($i = 1; $i < count($p); $i++) {
if (!Constant::isNumbersEqual($p[$i], $p[0])) {
$isEqual = FALSE;
}
}
}
// CASE 0
if (!$isEqual) {
return 0;
}
// CASE 2
if (Constant::isNumbersEqual($p[0], 0) || Constant::isNumbersEqual($p[0], 1)) {
return 2;
}
// CASE 3
if ($p[0] > 0 && $p[0] < 1) {
return 3;
}
// CASE 1
return 1;
}
/**
* @covers Classes\Utils\Math\Lines::findOverlappingOfTwoLines
*/
public function testFindOverlappingOfTwoLines_9()
{
$p1 = new \Classes\Utils\AbstractInstance\Point(3, 3, 3);
$p2 = new \Classes\Utils\AbstractInstance\Point(5, 5, 5);
$p3 = new \Classes\Utils\AbstractInstance\Point(10, 10, 10);
$p4 = new \Classes\Utils\AbstractInstance\Point(0, 0, 0);
$line1 = new \Classes\Utils\AbstractInstance\Line($p1, $p2);
$line2 = new \Classes\Utils\AbstractInstance\Line($p3, $p4);
$overlap1 = array();
$overlap2 = array();
$this->assertEquals(Lines::findOverlappingOfTwoLines($line1, $line2, $overlap1, $overlap2), TRUE);
$this->assertEquals(Constant::isNumbersEqual($overlap1[0], 0), TRUE);
$this->assertEquals(Constant::isNumbersEqual($overlap1[1], 2 * sqrt(3)), TRUE);
$this->assertEquals(Constant::isNumbersEqual($overlap2[0], 5 * sqrt(3)), TRUE);
$this->assertEquals(Constant::isNumbersEqual($overlap2[1], 7 * sqrt(3)), TRUE);
}
