Move hge to an archive.

Finish the main part of smPath.
This is a C++ project, add C++ tags to all source code that
could be identified as C source files.

1 files changed, 18 insertions, 4 deletions

diff --git a/extensions/smpath.cpp b/extensions/smpath.cpp
index d86e18b..9d73b4a 100644
--- a/extensions/smpath.cpp
+++ b/extensions/smpath.cpp
@@ -1,13 +1,27 @@
 #include <cmath>
 #include "smpath.hpp"
 smPathSegment::smPathSegment(smvec2d _a,smvec2d _b){a=_a,b=_b;}
-smvec2d smPathSegment::getPointOnPath(double percentage)
-{return a+percentage*(b-a);}
+smvec2d smPathSegment::getPointOnPath(double rt)
+{return a+rt*(b-a);}
 double smPathSegment::getPathLength()
 {return (a-b).l();}
 smPathCircular::smPathCircular(smvec2d _ctr,double _a,double _b,double _r)
 {ctr=_ctr,a=_a,b=_b,r=_r;}
-smvec2d smPathCircular::getPointOnPath(double percentage)
-{return smvec2d(ctr.x+r*cos(a+percentage*(b-a)),ctr.y+r*sin(a+percentage*(b-a)));}
+smvec2d smPathCircular::getPointOnPath(double rt)
+{return smvec2d(ctr.x+r*cos(a+rt*(b-a)),ctr.y+r*sin(a+rt*(b-a)));}
 double smPathCircular::getPathLength()
 {return fabs(a-b)*r;}
+int smPathCollection::pushPath(smPathBase *p){paths[cpaths++]=p;return cpaths-1;}
+smPathBase* smPathCollection::getPath(int pid){return paths[pid];}
+smvec2d smPathCollection::getPointOnCollection(double rt)
+{
+	double l=0.,tl=0.;
+	int i;
+	for(i=0;i<cpaths;++i)l+=paths[i]->getPathLength();
+	for(i=0;i<cpaths;++i)
+	{
+		if(tl+paths[i]->getPathLength()>=l*rt)break;
+		tl+=paths[i]->getPathLength();
+	}
+	return paths[i]->getPointOnPath(rt-tl/l);
+}