Major updates, start orientation, start documentation.

src/orientation.cc

@@ -0,0 +1,68 @@
+#include <cmath>
+#include <wrmath/geom/orientation.h>
+
+
+namespace wr {
+namespace geom {
+
+
+float
+RadiansToDegreesF(float rads)
+{
+	return rads * (180.0 / M_PI);
+}
+
+
+double
+RadiansToDegreesD(double rads)
+{
+	return rads * (180.0 / M_PI);
+}
+
+
+float
+DegreesToRadiansF(float degrees)
+{
+	return degrees * M_PI / 180.0;
+}
+
+
+double
+DegreesToRadiansD(double degrees)
+{return degrees * M_PI / 180.0;
+	return degrees * M_PI / 180.0;
+}
+
+
+float
+Heading2f(Vector2f vec)
+{
+	return vec.angle(Basis2f[Basis_i]);
+}
+
+
+float
+Heading3f(Vector3f vec)
+{
+	Vector2f	vec2f {vec[0], vec[1]};
+	return Heading2f(vec2f);
+}
+
+
+double
+Heading2d(Vector2d vec)
+{
+	return vec.angle(Basis2d[Basis_i]);
+}
+
+
+double
+Heading3d(Vector3d vec)
+{
+	Vector2d	vec2d {vec[0], vec[1]};
+	return Heading2d(vec2d);
+}
+
+
+} // namespace geom
+} // namespace wr