1GLUPARTIALDISK(3G)               OpenGL Manual              GLUPARTIALDISK(3G)
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NAME

6       gluPartialDisk - draw an arc of a disk
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C SPECIFICATION

9       void gluPartialDisk(GLUquadric* quad, GLdouble inner, GLdouble outer,
10                           GLint slices, GLint loops, GLdouble start,
11                           GLdouble sweep);
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PARAMETERS

14       quad
15           Specifies a quadrics object (created with gluNewQuadric()).
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17       inner
18           Specifies the inner radius of the partial disk (can be 0).
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20       outer
21           Specifies the outer radius of the partial disk.
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23       slices
24           Specifies the number of subdivisions around the z axis.
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26       loops
27           Specifies the number of concentric rings about the origin into
28           which the partial disk is subdivided.
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30       start
31           Specifies the starting angle, in degrees, of the disk portion.
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33       sweep
34           Specifies the sweep angle, in degrees, of the disk portion.
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DESCRIPTION

37       gluPartialDisk renders a partial disk on the z = 0 plane. A partial
38       disk is similar to a full disk, except that only the subset of the disk
39       from start through start + sweep is included (where 0 degrees is along
40       the +\f2y\f axis, 90 degrees along the +x axis, 180 degrees along the
41       \-y axis, and 270 degrees along the \-x axis).
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43       The partial disk has a radius of outer and contains a concentric
44       circular hole with a radius of inner. If inner is 0, then no hole is
45       generated. The partial disk is subdivided around the z axis into slices
46       (like pizza slices) and also about the z axis into rings (as specified
47       by slices and loops, respectively).
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49       With respect to orientation, the +z side of the partial disk is
50       considered to be outside (see gluQuadricOrientation()). This means that
51       if the orientation is set to GLU_OUTSIDE, then any normals generated
52       point along the +z axis. Otherwise, they point along the \-z axis.
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54       If texturing is turned on (with gluQuadricTexture()), texture
55       coordinates are generated linearly such that where r = outer, the value
56       at (r, 0, 0) is (1.0, 0.5), at (0, r, 0) it is (0.5, 1.0), at (\-r, 0,
57       0) it is (0.0, 0.5), and at (0, \-r, 0) it is (0.5, 0.0).
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SEE ALSO

60       gluCylinder(), gluDisk(), gluNewQuadric(), gluQuadricOrientation(),
61       gluQuadricTexture(), gluSphere()
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64       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
65       under the SGI Free Software B License. For details, see
66       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

69       opengl.org
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73opengl.org                        06/10/2014                GLUPARTIALDISK(3G)
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