static void
pinit(ModeInfo *mi)
{
gasketstruct *gp = &gasket[MI_SCREEN(mi)];
/* draw the gasket */
gp->gasket1 = glGenLists(1);
gp->current_depth = 1; /* start out at level 1, not 0 */
glNewList(gp->gasket1, GL_COMPILE);
compile_gasket(mi);
glEndList();
}
static void
draw(ModeInfo *mi)
{
Bool wireframe_p = MI_IS_WIREFRAME(mi);
gasketstruct *gp = &gasket[MI_SCREEN(mi)];
static int tick = 0;
static GLfloat pos[4] = {1.0, 1.0, 1.0, 0.0};
static float white[] = {1.0, 1.0, 1.0, 1.0};
static float color[] = {0.0, 0.0, 0.0, 1.0};
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (!wireframe_p)
{
glColor4fv (white);
glLightfv(GL_LIGHT0, GL_POSITION, pos);
color[0] = gp->colors[gp->ccolor].red * intens_factor;
color[1] = gp->colors[gp->ccolor].green * intens_factor;
color[2] = gp->colors[gp->ccolor].blue * intens_factor;
gp->ccolor++;
if (gp->ccolor >= gp->ncolors) gp->ccolor = 0;
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
glShadeModel(GL_SMOOTH);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
glEnable(GL_DEPTH_TEST);
glEnable(GL_NORMALIZE);
glEnable(GL_CULL_FACE);
glPushMatrix();
{
static int frame = 0;
GLfloat x, y, z;
# define SINOID(SCALE,SIZE) \
((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2)
x = SINOID(0.0071, 8.0);
y = SINOID(0.0053, 6.0);
z = SINOID(0.0037, 15.0);
frame++;
glTranslatef(x, y, z);
x = gp->rotx;
y = gp->roty;
z = gp->rotz;
if (x < 0) x = 1 - (x + 1);
if (y < 0) y = 1 - (y + 1);
if (z < 0) z = 1 - (z + 1);
glRotatef(x * 360, 1.0, 0.0, 0.0);
glRotatef(y * 360, 0.0, 1.0, 0.0);
glRotatef(z * 360, 0.0, 0.0, 1.0);
}
glScalef( 8.0, 8.0, 8.0 );
glCallList(gp->gasket1);
glPopMatrix();
if (tick++ >= speed)
{
tick = 0;
if (gp->current_depth >= max_depth)
gp->current_depth = -max_depth;
gp->current_depth++;
glDeleteLists (gp->gasket1, 1);
glNewList (gp->gasket1, GL_COMPILE);
compile_gasket (mi);
glEndList();
}
}
static void
draw(ModeInfo *mi)
{
Bool wireframe_p = MI_IS_WIREFRAME(mi);
gasketstruct *gp = &gasket[MI_SCREEN(mi)];
static const GLfloat pos[] = {-4.0, 3.0, 10.0, 1.0};
static const GLfloat white[] = {1.0, 1.0, 1.0, 1.0};
GLfloat color0[] = {0.0, 0.0, 0.0, 1.0};
GLfloat color1[] = {0.0, 0.0, 0.0, 1.0};
GLfloat color2[] = {0.0, 0.0, 0.0, 1.0};
GLfloat color3[] = {0.0, 0.0, 0.0, 1.0};
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (!wireframe_p)
{
glColor4fv (white);
glLightfv(GL_LIGHT0, GL_POSITION, pos);
color0[0] = gp->colors[gp->ccolor0].red / 65536.0;
color0[1] = gp->colors[gp->ccolor0].green / 65536.0;
color0[2] = gp->colors[gp->ccolor0].blue / 65536.0;
color1[0] = gp->colors[gp->ccolor1].red / 65536.0;
color1[1] = gp->colors[gp->ccolor1].green / 65536.0;
color1[2] = gp->colors[gp->ccolor1].blue / 65536.0;
color2[0] = gp->colors[gp->ccolor2].red / 65536.0;
color2[1] = gp->colors[gp->ccolor2].green / 65536.0;
color2[2] = gp->colors[gp->ccolor2].blue / 65536.0;
color3[0] = gp->colors[gp->ccolor3].red / 65536.0;
color3[1] = gp->colors[gp->ccolor3].green / 65536.0;
color3[2] = gp->colors[gp->ccolor3].blue / 65536.0;
gp->ccolor0++;
gp->ccolor1++;
gp->ccolor2++;
gp->ccolor3++;
if (gp->ccolor0 >= gp->ncolors) gp->ccolor0 = 0;
if (gp->ccolor1 >= gp->ncolors) gp->ccolor1 = 0;
if (gp->ccolor2 >= gp->ncolors) gp->ccolor2 = 0;
if (gp->ccolor3 >= gp->ncolors) gp->ccolor3 = 0;
glShadeModel(GL_SMOOTH);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
glEnable(GL_DEPTH_TEST);
glEnable(GL_NORMALIZE);
glEnable(GL_CULL_FACE);
glPushMatrix();
{
double x, y, z;
get_position (gp->rot, &x, &y, &z, !gp->button_down_p);
glTranslatef((x - 0.5) * 10,
(y - 0.5) * 10,
(z - 0.5) * 20);
gltrackball_rotate (gp->trackball);
get_rotation (gp->rot, &x, &y, &z, !gp->button_down_p);
glRotatef (x * 360, 1.0, 0.0, 0.0);
glRotatef (y * 360, 0.0, 1.0, 0.0);
glRotatef (z * 360, 0.0, 0.0, 1.0);
}
glScalef( 8.0, 8.0, 8.0 );
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color0);
glCallList(gp->gasket0);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color1);
glCallList(gp->gasket1);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color2);
glCallList(gp->gasket2);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color3);
glCallList(gp->gasket3);
glPopMatrix();
if (gp->tick++ >= speed)
{
gp->tick = 0;
if (gp->current_depth >= max_depth)
gp->current_depth = -max_depth;
gp->current_depth++;
/* We make four different lists so that each face of the tetrahedrons
can have a different color (all triangles facing in the same
direction have the same color, which is different from all
triangles facing in other directions.)
*/
glDeleteLists (gp->gasket0, 1);
glDeleteLists (gp->gasket1, 1);
glDeleteLists (gp->gasket2, 1);
glDeleteLists (gp->gasket3, 1);
mi->polygon_count = 0;
glNewList (gp->gasket0, GL_COMPILE); compile_gasket (mi, 0); glEndList();
glNewList (gp->gasket1, GL_COMPILE); compile_gasket (mi, 1); glEndList();
glNewList (gp->gasket2, GL_COMPILE); compile_gasket (mi, 2); glEndList();
glNewList (gp->gasket3, GL_COMPILE); compile_gasket (mi, 3); glEndList();
}
}