gluNextContour

gluNextContour: man2/gluNextContour.xml

gluNextContour is used in describing polygons with multiple contours. After the first contour has been described through a series of gluTessVertex calls, a gluNextContour call indicates that the previous contour is complete and that the next contour is about to begin. Another series of gluTessVertex calls is then used to describe the new contour. This process can be repeated until all contours have been described. type defines what type of contour follows. The legal contour types are as follows: If one contour is of type GLU_CCW or GLU_CW, then all contours must be of the same type (if they are not, then all GLU_CCW and GLU_CW contours will be changed to GLU_UNKNOWN ). Note that there is no real difference between the GLU_CCW and GLU_CW contour types. Before the first contour is described, gluNextContour can be called to define the type of the first contour. If gluNextContour is not called before the first contour, then the first contour is marked GLU_EXTERIOR. This command is obsolete and is provided for backward compatibility only. Calls to gluNextContour are mapped to gluTessEndContour followed by gluTessBeginContour.