git.mutantstargoat.com Git - laserbrain_demo/blob - src/geomdraw.cc

   1 #include "geomdraw.h"
   2 #include "opengl.h"
   3 #include "logger.h"
   4 #include "shader.h"
   5
   6 static void draw_sphere(const Sphere *sph);
   7 static void draw_box(const Box *box);
   8 static void draw_plane(const Plane *plane);
   9
  10 void draw_geom_object(const GeomObject *gobj)
  11 {
  12         switch(gobj->type) {
  13         case GOBJ_SPHERE:
  14                 draw_sphere((Sphere*)gobj);
  15                 break;
  16
  17         case GOBJ_AABOX:
  18                 {
  19                         Box box = Box(*(AABox*)gobj, Mat4::identity);
  20                         draw_box(&box);
  21                 }
  22                 break;
  23
  24         case GOBJ_BOX:
  25                 draw_box((Box*)gobj);
  26                 break;
  27
  28         case GOBJ_PLANE:
  29                 draw_plane((Plane*)gobj);
  30                 break;
  31
  32         default:
  33                 break;
  34         }
  35 }
  36
  37 static void draw_sphere(const Sphere *sph)
  38 {
  39         // TODO
  40         warning_log("draw_sphere unimplemented\n");
  41 }
  42
  43 static void draw_box(const Box *box)
  44 {
  45         static const int edges[][2] = {
  46                 {0, 1}, {1, 2}, {2, 3}, {3, 0},
  47                 {4, 5}, {5, 6}, {6, 7}, {7, 4},
  48                 {0, 4}, {1, 5}, {2, 6}, {3, 7}
  49         };
  50
  51         bind_shader(0);
  52
  53         glPushAttrib(GL_ENABLE_BIT);
  54         glDisable(GL_LIGHTING);
  55         glDisable(GL_TEXTURE_2D);
  56
  57         glMatrixMode(GL_MODELVIEW);
  58         glPushMatrix();
  59         glMultMatrixf(box->xform[0]);
  60
  61         glLineWidth(1.0);
  62         glBegin(GL_LINES);
  63         glColor3f(1, 1, 0);
  64         for(int i=0; i<12; i++) {
  65                 Vec3 a = box->get_corner(edges[i][0]);
  66                 Vec3 b = box->get_corner(edges[i][1]);
  67
  68                 glVertex3f(a.x, a.y, a.z);
  69                 glVertex3f(b.x, b.y, b.z);
  70         }
  71         glEnd();
  72
  73         glPopMatrix();
  74         glPopAttrib();
  75 }
  76
  77 static void draw_plane(const Plane *plane)
  78 {
  79         // TODO
  80         warning_log("draw_plane unimplemented\n");
  81 }