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Add line to rectangle collision detection in geom2d header.

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sigonasr2 2023-06-23 01:34:26 -07:00
parent 5a8527f51b
commit d9e8c6ddbd
2 changed files with 16 additions and 10 deletions
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2
Crawler/Version.h
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@ -2,7 +2,7 @@
#define VERSION_MAJOR 0
#define VERSION_MINOR 2
#define VERSION_PATCH 0
#define VERSION_BUILD 221
#define VERSION_BUILD 231
#define stringify(a) stringify_(a)
#define stringify_(a) #a

24
Crawler/olcUTIL_Geometry2D.h
View File

@ -594,11 +594,10 @@ namespace olc::utils::geom2d
template<typename T1, typename T2>
inline constexpr bool overlaps(const rect<T1>& r, const line<T2>& l)
{
return contains(r, l.start)
|| contains(r, l.end);
// TODO: This method is no good, it cant detect lines whose start and end
// points are outside the rectangle
return overlaps(r.left(),l)||
overlaps(r.top(),l)||
overlaps(r.bottom(),l)||
overlaps(r.right(),l);
}
// Check if circle overlaps line segment
@ -649,8 +648,16 @@ namespace olc::utils::geom2d
template<typename T1, typename T2>
inline std::vector<olc::v2d_generic<T2>> intersects(const rect<T1>& r, const line<T2>& l)
{
// TODO:
return {};
std::vector<olc::v2d_generic<T2>>intersections;
std::vector<olc::v2d_generic<T2>>result=intersects(r.left(),l);
if(result.size()>0)intersections.push_back(result[0]);
result=intersects(r.right(),l);
if(result.size()>0)intersections.push_back(result[0]);
result=intersects(r.top(),l);
if(result.size()>0)intersections.push_back(result[0]);
result=intersects(r.bottom(),l);
if(result.size()>0)intersections.push_back(result[0]);
return intersections;
}
// Get intersection points where circle intersects with line segment
@ -789,8 +796,7 @@ namespace olc::utils::geom2d
template<typename T1, typename T2>
inline std::vector<olc::v2d_generic<T2>> intersects(const line<T1>& l, const rect<T2>& r)
{
// TODO:
return {};
return intersects(r,l);
}
// Get intersection points where rectangle intersects with rectangle