void drawHouse(void) {
myBegin(GL_POLYGON); //roof
myColor3f(1.0,0.0,0.0);
myVertex2f(0.0,1.0);
myVertex2f(0.5,1.5);
myVertex2f(1.0,1.0);
myEnd();
myBegin(GL_POLYGON);
// house
myColor3f(0.0,1.0,0.0);
myVertex2f(0.0,1.0);
myVertex2f(1.0,1.0);
myVertex2f(1.0,0.0);
myVertex2f(0.0,0.0);
myEnd();
myBegin(GL_POLYGON);
// door
myColor3f(0.0,0.0,1.0);
myVertex2f(0.2,0.0);
myVertex2f(0.5,0.0);
myVertex2f(0.5,0.65);
myVertex2f(0.2,0.65);
myEnd();
}
void redrawSlices3D(void)
{
int i;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(objangle[X], 0.f, 1.f, 0.f);
glRotatef(objangle[Y], 1.f, 0.f, 0.f);
glMatrixMode(GL_TEXTURE);
glPushMatrix(); /* identity */
glTranslatef(.5f, .5f, .5f);
glRotatef(objangle[X], 0.f, 1.f, 0.f);
glRotatef(objangle[Y], 1.f, 0.f, 0.f);
glTranslatef(-.5f, -.5f, -.5f);
textureEnable();
glColor3f(1.f, 1.f, 1.f);
for(i = 0; i < slices; i++)
{
myBegin(GL_QUADS);
myVertex3f(-100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glEnd();
}
glDisable(GL_TEXTURE_3D_EXT);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor3f(0.f, 0.f, 1.f);
for(i = 0; i < slices; i++)
{
glBegin(GL_QUADS);
glVertex3f(-100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
glVertex3f( 100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
glVertex3f( 100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glVertex3f(-100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glEnd();
}
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
if(dblbuf)
glutSwapBuffers();
else
glFlush();
}
void redrawVolume(void)
{
int i;
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_TEXTURE);
glPushMatrix(); /* identity */
glTranslatef(.5f, .5f, .5f);
glRotatef(objangle[X], 0.f, 1.f, 0.f);
glRotatef(objangle[Y], 1.f, 0.f, 0.f);
glTranslatef(-.5f, -.5f, -.5f);
if(colors)
{
for(i = 0; i < slices/2; i++)
{
myBegin(GL_QUADS);
myVertex3f(-100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(0.f, 1.f, 0.f);
myVertex3f( 0.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(0.f, 0.f, 1.f);
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(1.f, 1.f, 1.f);
myVertex3f(-100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glEnd();
}
for(i = slices/2; i < slices; i++)
{
myBegin(GL_QUADS);
glColor3f(1.f, .5f, .5f);
myVertex3f(-100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(1.f, 1.f, 0.f);
myVertex3f( 0.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(1.f, 0.f, 1.f);
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glColor3f(0.f, 1.f, 1.f);
myVertex3f(-100.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 0.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 0.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
glEnd();
}
}
else
{
for(i = 0; i < slices; i++)
{
glColor3f(1.f, 1.f, 1.f);
myVertex3f(-100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, -100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f( 100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
myVertex3f(-100.f, 100.f, -100.f + 200 * i/(slices - 1.f));
}
}
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
if(dblbuf)
glutSwapBuffers();
else
glFlush();
}
