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glutsolidteapot(3glut) [osx man page]

glutSolidTeapot(3GLUT)						       GLUT						    glutSolidTeapot(3GLUT)

glutSolidTeapot, glutWireTeapot - render a solid or wireframe teapot respectively. SYNTAX
#include <GLUT/glut.h> void glutSolidTeapot(GLdouble size); void glutWireTeapot(GLdouble size); ARGUMENTS
size Relative size of the teapot. DESCRIPTION
glutSolidTeapot and glutWireTeapot render a solid or wireframe teapot respectively. Both surface normals and texture coordinates for the teapot are generated. The teapot is generated with OpenGL evaluators. BUGS
The teapot is greatly over-tesselated; it renders way too slow. OpenGL's default glFrontFace state assumes that front facing polygons (for the purpose of face culling) have vertices that wind counter clockwise when projected into window space. This teapot is rendered with its front facing polygon vertices winding clockwise. For OpenGL's default back face culling to work, you should use: glFrontFace(GL_CW); glutSolidTeapot(size); glFrontFace(GL_CCW); Both these bugs reflect issues in the original aux toolkit's teapot rendering routines (GLUT used the same teapot rendering routine). SEE ALSO
glutSolidSphere, glutSolidCube, glutSolidCone, glutSolidTorus, glutSolidDodecahedron, glutSolidOctahedron, glutSolidTetrahedron, glutSo- lidIcosahedron AUTHOR
Mark J. Kilgard ( GLUT
3.7 glutSolidTeapot(3GLUT)

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GLFRONTFACE(3G) 														   GLFRONTFACE(3G)

glFrontFace - define front- and back-facing polygons C SPECIFICATION
void glFrontFace( GLenum mode ) PARAMETERS
mode Specifies the orientation of front-facing polygons. GL_CW and GL_CCW are accepted. The initial value is GL_CCW. DESCRIPTION
In a scene composed entirely of opaque closed surfaces, back-facing polygons are never visible. Eliminating these invisible polygons has the obvious benefit of speeding up the rendering of the image. To enable and disable elimination of back-facing polygons, call glEnable and glDisable with argument GL_CULL_FACE. The projection of a polygon to window coordinates is said to have clockwise winding if an imaginary object following the path from its first vertex, its second vertex, and so on, to its last vertex, and finally back to its first vertex, moves in a clockwise direction about the interior of the polygon. The polygon's winding is said to be counterclockwise if the imaginary object following the same path moves in a counterclockwise direction about the interior of the polygon. glFrontFace specifies whether polygons with clockwise winding in window coordinates, or counterclockwise winding in window coordinates, are taken to be front-facing. Passing GL_CCW to mode selects counterclock- wise polygons as front-facing; GL_CW selects clockwise polygons as front-facing. By default, counterclockwise polygons are taken to be front-facing. ERRORS
GL_INVALID_ENUM is generated if mode is not an accepted value. GL_INVALID_OPERATION is generated if glFrontFace is executed between the execution of glBegin and the corresponding execution of glEnd. ASSOCIATED GETS
glGet with argument GL_FRONT_FACE SEE ALSO
glCullFace(3G), glLightModel(3G) GLFRONTFACE(3G)
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