Geometric Object Rendering 3 GTKGLEXT Library Geometric Object RenderingFunctions for generating easily recognizable 3D geometric objects #include <gdk/gdkgl.h> void gdk_gl_draw_cube (gboolean solid, double size); void gdk_gl_draw_sphere (gboolean solid, double radius, int slices, int stacks); void gdk_gl_draw_cone (gboolean solid, double base, double height, int slices, int stacks); void gdk_gl_draw_torus (gboolean solid, double inner_radius, double outer_radius, int nsides, int rings); void gdk_gl_draw_tetrahedron (gboolean solid); void gdk_gl_draw_octahedron (gboolean solid); void gdk_gl_draw_dodecahedron (gboolean solid); void gdk_gl_draw_icosahedron (gboolean solid); void gdk_gl_draw_teapot (gboolean solid, double scale); gdk_gl_draw_cubevoid gdk_gl_draw_cube (gboolean solid, double size); Renders a cube. The cube is centered at the modeling coordinates origin with sides of length size. solid : TRUE if the cube should be solid. size : length of cube sides. gdk_gl_draw_spherevoid gdk_gl_draw_sphere (gboolean solid, double radius, int slices, int stacks); Renders a sphere centered at the modeling coordinates origin of the specified radius. The sphere is subdivided around the Z axis into slices and along the Z axis into stacks. solid : TRUE if the sphere should be solid. radius : the radius of the sphere. slices : the number of subdivisions around the Z axis (similar to lines of longitude). stacks : the number of subdivisions along the Z axis (similar to lines of latitude). gdk_gl_draw_conevoid gdk_gl_draw_cone (gboolean solid, double base, double height, int slices, int stacks); Renders a cone oriented along the Z axis. The base of the cone is placed at Z = 0, and the top at Z = height. The cone is subdivided around the Z axis into slices, and along the Z axis into stacks. solid : TRUE if the cone should be solid. base : the radius of the base of the cone. height : the height of the cone. slices : the number of subdivisions around the Z axis. stacks : the number of subdivisions along the Z axis. gdk_gl_draw_torusvoid gdk_gl_draw_torus (gboolean solid, double inner_radius, double outer_radius, int nsides, int rings); Renders a torus (doughnut) centered at the modeling coordinates origin whose axis is aligned with the Z axis. solid : TRUE if the torus should be solid. inner_radius : inner radius of the torus. outer_radius : outer radius of the torus. nsides : number of sides for each radial section. rings : number of radial divisions for the torus. gdk_gl_draw_tetrahedronvoid gdk_gl_draw_tetrahedron (gboolean solid); Renders a tetrahedron centered at the modeling coordinates origin with a radius of the square root of 3. solid : TRUE if the tetrahedron should be solid. gdk_gl_draw_octahedronvoid gdk_gl_draw_octahedron (gboolean solid); Renders a octahedron centered at the modeling coordinates origin with a radius of 1.0. solid : TRUE if the octahedron should be solid. gdk_gl_draw_dodecahedronvoid gdk_gl_draw_dodecahedron (gboolean solid); Renders a dodecahedron centered at the modeling coordinates origin with a radius of the square root of 3. solid : TRUE if the dodecahedron should be solid. gdk_gl_draw_icosahedronvoid gdk_gl_draw_icosahedron (gboolean solid); Renders a icosahedron. The icosahedron is centered at the modeling coordinates origin and has a radius of 1.0. solid : TRUE if the icosahedron should be solid. gdk_gl_draw_teapotvoid gdk_gl_draw_teapot (gboolean solid, double scale); Renders a teapot. Both surface normals and texture coordinates for the teapot are generated. The teapot is generated with OpenGL evaluators. solid : TRUE if the teapot should be solid. scale : relative size of the teapot.