glants_mech/linux/src/wirebox.c

   1 //
   2 // wirebox.cpp
   3 // - do we need a file for each object....yes!
   4 //
   5
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 #include <GL/gl.h>                      // Header File For The OpenGL32 Library
  11 #include <GL/glu.h>                     // Header File For The GLu32 Library
  12
  13
  14 #include "gldrawlib.h"
  15 #include "objects.h"
  16
  17 #undef CURRENT_OBJECT
  18 #define CURRENT_OBJECT                  wirebox
  19
  20 static void init_wirebox(int list_id);
  21 static void compile_wirebox(void);
  22 static void draw_wirebox(void);
  23 static void render_wirebox(void);
  24 static void draw_wirebox(void);
  25
  26 //
  27 // simple objects library
  28 // - make sure to change the number of objects
  29 // in objects.h
  30 //
  31 DriverObjects CURRENT_OBJECT =
  32 {
  33         init_wirebox,                   // init, must be called first
  34         compile_wirebox,                // compile
  35         draw_wirebox,                   // draw
  36         render_wirebox,                 // render to scene
  37         0                                       // loaded by INIT
  38 };
  39
  40
  41 //=========================================================
  42 static void draw_wirebox(void)
  43 {
  44         float size = 0.4f;
  45
  46         glColor3f(1.0f, 1.0f, 1.0f);
  47          glBegin(GL_LINE_LOOP);
  48         // Front Face
  49         glVertex3f(-size,  0.0f,  size);        // left bottom
  50         glVertex3f( size,  0.0f,  size);        // right bottom
  51         glVertex3f( size,  size,  size);        // top right
  52         glVertex3f(-size,  size,  size);        // top left
  53         // Back Face
  54
  55         glVertex3f(-size,  0.0f, -size);
  56         glVertex3f(-size,  size, -size);
  57         glVertex3f( size,  size, -size);
  58         glVertex3f( size,  0.0f, -size);
  59
  60         // Top Face
  61         glVertex3f(-size,  size, -size);
  62         glVertex3f(-size,  size,  size);
  63         glVertex3f( size,  size,  size);
  64         glVertex3f( size,  size, -size);
  65
  66         // Bottom Face
  67         glVertex3f(-size,  0.0f, -size);
  68         glVertex3f( size,  0.0f, -size);
  69         glVertex3f( size,  0.0f,  size);
  70         glVertex3f(-size,  0.0f,  size);
  71
  72         // Right face
  73         glVertex3f( size,  0.0f, -size);
  74         glVertex3f( size,  size, -size);
  75         glVertex3f( size,  size,  size);
  76         glVertex3f( size,  0.0f,  size);
  77
  78         // Left Face
  79         glVertex3f(-size,  0.0f, -size);
  80         glVertex3f(-size,  0.0f,  size);
  81         glVertex3f(-size,  size,  size);
  82         glVertex3f(-size,  size, -size);
  83         glEnd();
  84
  85 } // end of the function
  86
  87
  88 //
  89 // init
  90 // - load anything special about the
  91 // one important function
  92 //
  93 static void init_wirebox(int list_id)
  94 {
  95
  96         CURRENT_OBJECT.visible = 1;
  97
  98         // store the id through the function
  99         // there is probably a better way to do this
 100         CURRENT_OBJECT.call_id = list_id;
 101
 102 } // end of the functino
 103
 104
 105 //=========================================================
 106 // Now the function to actually draw it
 107 //=========================================================
 108 static void render_wirebox(void)
 109 {
 110                 //glPushMatrix();
 111
 112                         glCallList(CURRENT_OBJECT.call_id);
 113
 114                 //glPopMatrix();
 115
 116 } // end of the function
 117
 118 //=========================================================
 119 // compile
 120 //=========================================================
 121 static void compile_wirebox(void)
 122 {
 123         int id;
 124         // setup a spot for display list for background
 125         //object = getcurrentobject();
 126         id = CURRENT_OBJECT.call_id;
 127
 128         // apply list
 129         glNewList(id, GL_COMPILE);
 130
 131                 // call drawing function
 132                 // but this may method make it a little better
 133                 CURRENT_OBJECT.draw();
 134
 135         glEndList();
 136
 137 } // end of the function
 138