Add smPath source files.

Sync with the latest BLR3.

1 files changed, 56 insertions, 0 deletions

diff --git a/include/smpath.hpp b/include/smpath.hpp
new file mode 100644
index 0000000..98eec6f
--- /dev/null
+++ b/include/smpath.hpp
@@ -0,0 +1,56 @@
+// -*- C++ -*-
+/*
+ * Simple MultimEdia LiTerator(SMELT)
+ * by Chris Xiong 2015
+ * Path/Curve header & implementation
+ *
+ * WARNING: This library is in development and interfaces would be very
+ * unstable.
+ *
+ */
+#ifndef SMPATH_H
+#define SMPATH_H
+#include "smmath.hpp"
+class smPathBase
+{
+public:
+	virtual smvec2d getPointOnPath(double rt){return smvec2d(0,0);}
+	virtual double getPathLength()//default lowres length calculator
+	{
+		double ret=0;
+		for(int i=0;i<63;++i)
+		ret+=(getPointOnPath(i/64.)-getPointOnPath((i+1)/64.)).l();
+		return ret;
+	}
+	virtual ~smPathBase(){}
+};
+class smPathSegment:public smPathBase
+{
+private:
+	smvec2d a,b;
+public:
+	smPathSegment(smvec2d _a,smvec2d _b);
+	smvec2d getPointOnPath(double rt)override;
+	double getPathLength()override;
+};
+class smPathCircular:public smPathBase
+{
+private:
+	smvec2d ctr;
+	double a,b,r;
+public:
+	smPathCircular(smvec2d _ctr,double _a,double _b,double _r);
+	smvec2d getPointOnPath(double rt)override;
+	double getPathLength()override;
+};
+class smPathCollection
+{
+private:
+	smPathBase* paths[16];
+	int cpaths;
+public:
+	int pushPath(smPathBase *p);
+	smPathBase* getPath(int pid);
+	smvec2d getPointOnCollection(double rt);
+};
+#endif