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词条 gluQuadricOrientation
释义

gluQuadricOrientation

NAME

gluQuadricOrientation -- specify inside/outside orientation for quadrics

C SPECIFICATION

void gluQuadricOrientation(GLUquadricObj *quadObject,

GLenum orientation)

PARAMETERS

quadObject

Specifies the quadrics object (created with gluNewQuadric).

orientation

Specifies the desired orientation. Valid values are GLU_OUTSIDE and GLU_INSIDE.

DESCRIPTION

gluQuadricOrientation specifies what kind of orientation is desired for quadrics rendered with quadObject. The orientation values are as follows:

GLU_OUTSIDE

Quadrics are drawn with normals pointing outward.

GLU_INSIDE

Normals point inward. The default is GLU_OUTSIDE.

Note that the interpretation of outward and inward depends on the quadric being drawn.

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