Added calcPlane from normal and position.:

include/bx/inline/math.inl

@@ -936,11 +936,15 @@ namespace bx
 	{
 		float normal[3];
 		calcNormal(normal, _va, _vb, _vc);
+		calcPlane(_result, normal, _va);
+	}
 
-		_result[0] = normal[0];
-		_result[1] = normal[1];
-		_result[2] = normal[2];
-		_result[3] = -vec3Dot(normal, _va);
+	inline void calcPlane(float _result[4], const float _normal[3], const float _pos[3])
+	{
+		_result[0] = _normal[0];
+		_result[1] = _normal[1];
+		_result[2] = _normal[2];
+		_result[3] = -vec3Dot(_normal, _pos);
 	}
 
 	inline BX_CONST_FUNC float toLinear(float _a)

include/bx/math.h

@@ -555,6 +555,9 @@ namespace bx
 	///
 	void calcPlane(float _result[4], const float _va[3], const float _vb[3], const float _vc[3]);
 
+	///
+	void calcPlane(float _result[4], const float _normal[3], const float _pos[3]);
+
 	///
 	void calcLinearFit2D(float _result[2], const void* _points, uint32_t _stride, uint32_t _numPoints);