+/**\r
+ * Draw x, z axis on floor\r
+ */\r
+void drawLine() {\r
+ // **NOTE: fix function\r
+ glDisable(GL_TEXTURE_2D);\r
+ glEnable(GL_BLEND);\r
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);\r
+ glColor4ub( 0.0, 0.0, 0.0, 0.5 );\r
+\r
+ glBegin(GL_LINES);\r
+ glVertex3i( 10.0, 0.1, 10.0);\r
+ glVertex3i( -10.0, 0.1, -10.0);\r
+ glEnd();\r
+\r
+ glDisable(GL_BLEND);\r
+ glEnable(GL_TEXTURE_2D);\r
+}\r
+\r