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/*
* Copyright © 2010 Ian D. Romanick
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "system.h"
#include "glu3.h"
#if defined(__cplusplus)
extern "C" {
#endif
typedef void (revolve_cb)(void *data, const GLUvec4 *position,
const GLUvec4 *normal, const GLUvec4 *tangent,
const GLUvec4 *uv);
/**
* Generate a surface of revolution
*
* \param points Points that define the outline of the shape to be
* revolved.
* \param normals Initial per-vertex normals.
* \param u Per-vertex position in parameter-space along the u-axis.
* \param num_points Number of points in \c points, \c normals, and \c u.
* \param axis Axis around which to rotate.
* \param steps Total number of steps to rotate through. The angle of
* rotation at the first step will be \c start_angle, and
* the angle of rotation at the last step will be
* \c end_angle.
* \param start_angle Initial angle of rotation.
* \param end_angle Final angle of rotation.
* \param cb Per-vertex call-back function.
* \param data User-supplied data pointer passed to the per-vertex
* call-back function.
*
* \note
* Per-vertex tangents are generate based on the assumption that all of the
* initial vertices lie within the X-Y plane and that the axis of revolution
* also lies within the X-Y plane.
*/
extern void
revolve(const GLUvec4 *points, const GLUvec4 *normals, const float *u,
unsigned num_points,
const GLUvec4 *axis,
unsigned steps, float start_angle, float end_angle,
revolve_cb *cb, void *data);
extern void
generate_sphere(double radius, unsigned slices, unsigned stacks,
bool normals_point_out, revolve_cb *cb, void *data);
#ifdef __cplusplus
};
#endif
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