GNU/Linux man pages
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GNU/Linux |
CentOS 5.3 |
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gluDisk(3gl) |
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gluDisk − draw a disk
void gluDisk( GLUquadric* quad,
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GLdouble inner, | |
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GLdouble outer, | |
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GLint slices, | |
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GLint loops ) |
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quad |
Specifies the quadrics object (created with gluNewQuadric). | ||
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inner |
Specifies the inner radius of the disk (may be 0). | ||
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outer |
Specifies the outer radius of the disk. | ||
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slices |
Specifies the number of subdivisions around the z axis. | ||
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loops |
Specifies the number of concentric rings about the origin into which the disk is subdivided. |
gluDisk renders a disk on the z = 0 plane. The disk has a radius of outer, and contains a concentric circular hole with a radius of inner. If inner is 0, then no hole is generated. The disk is subdivided around the z axis into slices (like pizza slices), and also about the z axis into rings (as specified by slices and loops, respectively).
With respect to orientation, the +z side of the disk is considered to be "outside" (see gluQuadricOrientation). This means that if the orientation is set to GLU_OUTSIDE, then any normals generated point along the +z axis. Otherwise, they point along the −z axis.
If texturing has been turned on (with gluQuadricTexture), texture coordinates are generated linearly such that where $ r ~=~ "outer" $, the value at (r, 0, 0) is (1, 0.5), at (0, r, 0) it is (0.5, 1), at (−r, 0, 0) it is (0, 0.5), and at (0, −r, 0) it is (0.5, 0).
gluCylinder(3G), gluNewQuadric(3G), gluPartialDisk(3G), gluQuadricOrientation(3G), gluQuadricTexture(3G), gluSphere(3G)
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gluDisk(3gl) | |