mgs/quickhull
2
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity

fixed akl: order lines counterclockwise

Browse Source
This commit is contained in:
incredibleLeitman 2020-11-30 18:08:26 +01:00
parent 40f6a6cb04
commit f65041c0ad
1 changed files with 21 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
Display.cpp
View File

@ -127,15 +127,23 @@ void Display::setCurrentLine()
positives++;
break; // sufficient as candidate if at least one point is right
}
/*positives += (sign(pt.getPosition().x, pt.getPosition().y,
/*if (sign(pt.getPosition().x, pt.getPosition().y,
cand.from().x(), cand.from().y(),
cand.to().x(), cand.to().y()) > 0) ? 1 : 0;*/
cand.to().x(), cand.to().y()) > 0)
{
positives++;
break; // sufficient as candidate if at least one point is right
}*/
}
if (positives > 0)
{
m_curLineIdx = lines - 1;
m_curLine = m_lines[lines - 1];
std::cout << "selecting last line of " << lines << ": " <<
m_curLine.from().x() << ", " << m_curLine.from().y() << " - " <<
m_curLine.to().x() << ", " << m_curLine.to().y() << std::endl;
}
else
{
@ -209,6 +217,11 @@ void Display::update ()
}
}
std::cout << "right: " << right.x << ", " << right.y << std::endl;
std::cout << "top: " << top.x << ", " << top.y << std::endl;
std::cout << "left: " << left.x << ", " << left.y << std::endl;
std::cout << "bot: " << bot.x << ", " << bot.y << std::endl;
// adding edge points to hull
m_points[i_left].setFillColor(sf::Color::Blue);
m_hullPoints.push_back(m_points[i_left]);
@ -223,9 +236,11 @@ void Display::update ()
m_hullPoints.push_back(m_points[i_bot]);
// building lines between edge points
Point pt1(left.x, left.y);
// hull points shall be clockwise, but lines have to be counterclockwise
// because only checking elems right of lines
Point pt1(right.x, right.y);
Point pt2(top.x, top.y);
Point pt3(right.x, right.y);
Point pt3(left.x, left.y);
Point pt4(bot.x, bot.y);
m_lines.push_back(Line(pt1, pt2));
m_lines.push_back(Line(pt2, pt3));
@ -251,7 +266,7 @@ void Display::update ()
}
}
setCurrentLine();
//setCurrentLine(); // set current line in next step
}
else
{