cgal 線面相交,線線相交
阿新 • • 發佈:2020-09-15
簡介
快速用庫的方式得到交點
參考連結
https://blog.csdn.net/OOFFrankDura/article/details/82430434
code
//山東大學 計算機基地Frankdura //2018.9.4 #include <CGAL/Exact_predicates_exact_constructions_kernel.h> #include <CGAL/intersections.h> typedef CGAL::Exact_predicates_exact_constructions_kernel K; typedef K::Point_3 Point_3; typedef K::Segment_3 Segment_3; typedef K::Plane_3 Plane_3; typedef K::Intersect_3 Intersect_3; int main() { Segment_3 seg(Point_3(0,0,0), Point_3(2,2,0)); Segment_3 lin(Point_3(1,2,0), Point_3(1,0,0)); CGAL::cpp11::result_of<Intersect_3(Segment_3, Segment_3)>::type result = intersection(seg, lin); if (result) { if (const Segment_3* s = boost::get<Segment_3>(&*result)) { std::cout << *s << std::endl; } else { const Point_3* p = boost::get<Point_3 >(&*result); std::cout << (*p) << std::endl; } } return 0; }
#include <CGAL/Exact_predicates_exact_constructions_kernel.h> #include <CGAL/intersections.h> typedef CGAL::Exact_predicates_exact_constructions_kernel K; typedef K::Point_3 Point_3; typedef K::Segment_3 Segment_3; typedef K::Plane_3 Plane_3; typedef K::Intersect_3 Intersect_3; int main() { Segment_3 seg(Point_3(0,0,0), Point_3(4,4,4)); Plane_3 lin (Point_3(1,0,0),Point_3(0,1,0),Point_3(0,0,1)); CGAL::cpp11::result_of<Intersect_3(Segment_3, Segment_3)>::type result = intersection(seg, lin); if (result) { if (const Segment_3* s = boost::get<Segment_3>(&*result)) { std::cout << *s << std::endl; } else { const Point_3* p = boost::get<Point_3 >(&*result); std::cout << (*p) << std::endl; } } return 0; }
附贈Makefile
LOCAL_LIBRARY += -L/home/ling/lee/lib/cgal/dyna LOCAL_LDFLAGS += -lm -lpthread -ldl -lCGAL_Core -lCGAL_ImageIO -lCGAL -lgmp -lmpfr LOCAL_CFLAGS += -I/home/ling/lee/include CC := g++ -g -std=c++17 TARGETS1 = genCube2 SRCS1 = main2.cc OBJS1 = $(patsubst %.cc, %.o, $(SRCS1)) CFLAGS += $(LOCAL_CFLAGS) LDFLAGS += $(LOCAL_LIBRARY) $(LOCAL_LDFLAGS) $(info $(OBJS)) $(info $(TARGETS)) all: $(TARGETS1) $(TARGETS1):$(OBJS1) $(CC) -o $@ $^ $(LDFLAGS) $(CFLAGS) $(OBJS1): %.o:%.cc $(CC) -c $< -o $@ $(CFLAGS) clean : @rm -rf $(TARGETS1) $(OBJS1) #.SUFFIXES: .PHONY : all clean