To implement an abstract method:isOpenGLInitialized

Change-Id: I651c0e5830008fd08ba886ccf1be99d40868bb72

chart2/source/view/inc/GL3DRenderer.hxx

@@ -159,7 +159,7 @@ public:
 
     void LoadShaders();
     void init();
-
+    bool isOpenGLInitialized();
     void Set3DSenceInfo(const glm::vec3& cameraUp, sal_Int32 color, bool twoSidesLighting = false);
     void SetLightInfo(bool lightOn, sal_Int32 color, const glm::vec4& direction);
     void AddShapePolygon3DObject(sal_Int32 color, bool lineOnly, sal_Int32 lineColor,
@@ -227,7 +227,7 @@ private:
     glm::mat4 m_Model;
     // Our ModelViewProjection : multiplication of our 3 matrices
     glm::mat4 m_MVP;
-
+    bool m_IsOpenglInit;
 #if 0
     double m_dFreq;
 #endif

chart2/source/view/main/GL3DRenderer.cxx

@@ -141,8 +141,15 @@ void OpenGL3DRenderer::init()
 
     m_3DProjection = glm::perspective(30.0f, (float)m_iWidth / (float)m_iHeight, 0.01f, 2000.0f);
     LoadShaders();
+    m_IsOpenglInit = true;
 }
 
+bool OpenGL3DRenderer::isOpenGLInitialized()
+{
+    return m_IsOpenglInit;
+}
+
+
 void OpenGL3DRenderer::AddVertexData(GLuint vertexBuf)
 {
     glBindBuffer(GL_ARRAY_BUFFER, vertexBuf);