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use already implemented line class functionality for best experience 👌

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This commit is contained in:
incredibleLeitman 2020-11-30 00:39:15 +01:00
parent d1efc75f21
commit bda1158e7f
2 changed files with 8 additions and 74 deletions
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15
Display.cpp
View File

@ -211,9 +211,14 @@ void Display::update ()
int positives = 0;
for (auto& pt : m_points)
{
positives += (sign(pt.getPosition().x, pt.getPosition().y,
if (cand.is_point_right(Point(pt.getPosition().x, pt.getPosition().y)))
{
positives++;
break; // sufficient as candidate if at least one point is right
}
/*positives += (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) ? 1 : 0;*/
}
if (positives > 0)
@ -253,11 +258,7 @@ void Display::update ()
if (m_points[i].getFillColor() == sf::Color::Green) continue;
sf::Vector2f cand = m_points[i].getPosition();
float distance = pDistance(
cand.x, cand.y,
m_lines[m_curLineIdx].from().x(), m_lines[m_curLineIdx].from().y(),
m_lines[m_curLineIdx].to().x(), m_lines[m_curLineIdx].from().y());
float distance = m_lines[m_curLineIdx].distance_squared_to(Point(cand.x, cand.y));
if (distance > maxDistance)
{
i_cand = i;

67
Utility.h
View File

@ -22,71 +22,4 @@ static bool IsPointInTriangle(const Point &pt, const Point &p1, const Point &p2,
return !(has_neg && has_pos);
}
static float pDistance(float x, float y, float x1, float y1, float x2, float y2) {
float A = x - x1;
float B = y - y1;
float C = x2 - x1;
float D = y2 - y1;
float dot = A * C + B * D;
float len_sq = C * C + D * D;
float param = -1;
if (len_sq != 0) // in case of 0 length line
param = dot / len_sq;
float xx, yy;
if (param < 0) {
xx = x1;
yy = y1;
}
else if (param > 1) {
xx = x2;
yy = y2;
}
else {
xx = x1 + param * C;
yy = y1 + param * D;
}
float dx = x - xx;
float dy = y - yy;
return dx * dx + dy * dy;
//return sqrt(dx * dx + dy * dy);
}
/* not used anymore... or yet
static bool SortForMinXMaxY (const Point& a, const Point& b)
{
if (a.x() != b.x())
{
return (a.x() < b.x());
}
return (a.y() > b.y());
}
static bool SortForMinYMaxX(const Point& a, const Point& b)
{
if (a.y() != b.y())
{
return (a.x() < b.x());
}
return (a.y() > b.y());
}
static void sortPoints (std::vector<Point>& pts)
{
std::sort(pts.begin(), pts.end(), SortForMinXMaxY);
}
// TODO: what happens if all/more points are on hor/vert line? -> sort for x, than y should handle this
static std::pair<Point, Point> getMinMaxX(std::vector<Point>& pts)
{
// TODO: check if already sorted? assume array is sorted? call sort utility function???
//sortPoints(pts);
std::sort(pts.begin(), pts.end(), SortForMinXMaxY);
return std::make_pair(pts[0], pts[pts.size() - 1]);
}*/
#endif // UTILITY_H