ELLIPSE.CXX

/* 
 * (c) Copyright 1993, Silicon Graphics, Inc. 
 *               1993-1995 Microsoft Corporation 
 * 
 * ALL RIGHTS RESERVED 
 * 
 * Please refer to OpenGL/readme.txt for additional information 
 * 
 */ 
 
#include "glos.h" 
 
#include <GL/glu.h> 
 
#ifdef X11 
#include <GL/glx.h> 
#endif 
 
#include <stdio.h> 
 
#ifdef WIN32 
#include "stonehen.h" 
#endif 
 
#include "Ellipse.h" 
 
EllipseSt::EllipseSt() 
{ 
  Point sar_dim, lin_dim; 
 
  sar_dim.set(.3, .5, 1.2); 
  lin_dim.set(.3, 1.2, .2); 
 
  sarcens[0].set_dimensions(sar_dim); 
  lintels[0].set_dimensions(lin_dim); 
  sarcens[0].translate(5, 0, sar_dim.pt[2]); 
  lintels[0].translate(4.9, 0, 2.*sar_dim.pt[2] + lin_dim.pt[2]); 
  copy_zero(); 
 
  sarcens[0].rotate_self_aboutz(17); 
  sarcens[1].rotate_self_aboutz(33); 
  lintels[0].rotate_self_aboutz(25); 
 
  sarcens[2].rotate_self_aboutz(-17); 
  sarcens[3].rotate_self_aboutz(-33); 
  lintels[1].rotate_self_aboutz(-25); 
 
  sarcens[4].rotate_self_aboutz(197); 
  sarcens[5].rotate_self_aboutz(213); 
  lintels[2].rotate_self_aboutz(205); 
 
  sarcens[6].rotate_self_aboutz(-197); 
  sarcens[7].rotate_self_aboutz(-213); 
  lintels[3].rotate_self_aboutz(-205); 
}   
   
void EllipseSt::erode(float p) 
{ 
  int i; 
 
  for (i = 0; i < nsarcens; i++) sarcens[i].erode(p); 
  for (i = 0; i < nlintels; i++) lintels[i].erode(p); 
} 
 
void EllipseSt::draw() 
{ 
  glPushMatrix(); 
  glScalef(1, 1.1, 1); 
  draw_sarcens(); 
  draw_lintels(); 
  glPopMatrix(); 
} 
 
void EllipseSt::draw_sarcens() 
{ 
  int i; 
  for (i = 0; i < nsarcens; i++) sarcens[i].draw(); 
} 
 
void EllipseSt::draw_lintels() 
{ 
  int i; 
  for (i = 0; i < nlintels; i++) lintels[i].draw(); 
} 
 
void EllipseSt::draw_shadow(Point dlight, GLfloat blur, 
  Color color, Color diffuse) 
{ 
  draw_sarcens_shadows(dlight, blur, color, diffuse); 
  draw_lintels_shadows(dlight, blur, color, diffuse); 
} 
 
void EllipseSt::draw_sarcens_shadows(Point dlight, GLfloat blur, 
   Color color, Color diffuse) 
{ 
  int i; 
  for (i = 0; i < nsarcens; i++)  
sarcens[i].draw_shadow(dlight, blur, color, diffuse); 
} 
 
void EllipseSt::draw_lintels_shadows(Point dlight, GLfloat blur, 
   Color color, Color diffuse) 
{ 
  int i; 
  for (i = 0; i < nlintels; i++)  
lintels[i].draw_shadow(dlight, blur, color, diffuse); 
} 
 
void EllipseSt::copy_zero() 
{ 
  int i; 
 
  for (i = 1; i < nsarcens; i++) sarcens[i] = sarcens[0]; 
  for (i = 1; i < nlintels; i++) lintels[i] = lintels[0]; 
}