st_draw_shape.h

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/* $Id: st_draw_shape.h 18278 2014-11-25 01:42:10Z ksimek $ */
/* =========================================================================== *
|
|  Copyright (c) 1994-2008 by Kobus Barnard (author).
|
|  Personal and educational use of this code is granted, provided that this
|  header is kept intact, and that the authorship is not misrepresented, that
|  its use is acknowledged in publications, and relevant papers are cited.
|
|  For other use contact the author (kobus AT cs DOT arizona DOT edu).
|
|  Please note that the code in this file has not necessarily been adequately
|  tested. Naturally, there is no guarantee of performance, support, or fitness
|  for any particular task. Nonetheless, I am interested in hearing about
|  problems that you encounter.
|
| Authors:
|     Emily Hartley
|
* =========================================================================== */

#ifndef KJB_DRAW_SHAPE_H
#define KJB_DRAW_SHAPE_H

#include <m_cpp/m_vector.h>
#include <gr_cpp/gr_opengl.h>
#include <gr_cpp/gr_opengl_headers.h>
#include <gr_cpp/gr_camera.h>
#include <gr_cpp/gr_polymesh.h>
#include <st_cpp/st_perspective_camera.h>
#include <g_cpp/g_cylinder.h>
#include <g_cpp/g_cylinder_section.h>

#define rad_to_deg 57.2957795
//      rad_to_deg = 180.0 / M_PI;

namespace kjb {

int draw_cylinder(GLUquadricObj* myQuadric, const Vector& p1, const Vector& p2, double r);

int draw_cylinder(Perspective_camera& c, GLUquadricObj* myQuadric, const Vector& p1, const Vector& p2, double r);

int draw_cylinder(GLUquadricObj* myQuadric, const Cylinder cyl);

int draw_cylinder(Perspective_camera& c, GLUquadricObj* myQuadric, const std::vector<Cylinder> cylinders);

int draw_cylinder_section(GLUquadricObj* myQuadric, const Vector& p1, const Vector& p2, double radius, double angle, const Vector& angle_startpt, const Vector& angle_endpt, GLuint& MY_CLIP_PLANE, GLuint& MY_CLIP_PLANE1);

int draw_cylinder_section(Perspective_camera& c, GLUquadricObj* myQuadric, const std::vector<Cylinder_section> cylinders);


// Perspective_camera_gl_interface


void compute_cylinder_rotation_angles(const Vector& p1, const Vector& p2, Vector& top, Vector& bottom, double& magnitude, double& angle_y, double& angle_x);

void draw_translated_and_rotated_cylinder(GLUquadricObj* myQuadric, const Vector& bottom, const double angle_y, const double angle_x, const double radius, const double magnitude);


void build_cylinder(std::vector<Vector>& vlist, std::vector<Vector>& nlist, int facets, int ribs, float radius, float length);

void build_frustum(std::vector<Vector>& vlist, std::vector<Vector>& nlist, int facets, int ribs, float radius_bottom, float radius_top, float length);

/*
 * @brief Transforms the vertices of a cylinder on the +z-axis and with a base centered at the 
 * origin back to their real-world position.
 */
void untransform_points(std::vector<Vector>& vlist, const Vector& bottom, const double angle_y, const double angle_x, std::vector<Vector>& vlist_tr);

/*
 * @brief Draws the top and bottom circles and the outermost edges of the body (with respect to
 * the camera position) of the cylinder.
 */
void draw_cylinder_edges(std::vector<Vector>& vlist, int facets, int ribs, const Vector& bottom, const double angle_y, const double angle_x, const Perspective_camera* camera);

/*
 * @brief Draws the edges for all of the facets of the cylinder.
 */
void draw_cylinder_facets(std::vector<Vector>& vlist, int facets, int ribs);

void render_cylinder_silhouette(const Polymesh* polymesh, const Perspective_camera* camera);

void render_occlude_cylinder_silhouette(const Polymesh* polymesh, const Perspective_camera* camera);

void render_frustum_silhouette(const Polymesh* polymesh, Perspective_camera* camera);

void render_occlude_frustum_silhouette(const Polymesh* polymesh, Perspective_camera* camera);

}

#endif