+ ar = (pr + sr) / 2.0;
+ ag = (pg + sg) / 2.0;
+ ab = (pb + sb) / 2.0;
+ glBegin(GL_TRIANGLES);
+ glColor3f(pr, pg, pb);
+ glVertex2i(x, y);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(ar, ag, ab);
+ glVertex2i(x, y+h/2);
+
+ glVertex2i(x, y+h/2);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(pr, pg, pb);
+ glVertex2i(x, y+h);
+
+ glVertex2i(x, y+h);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(ar, ag, ab);
+ glVertex2i(x+w/2, y+h);
+
+ glVertex2i(x+w/2, y+h);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(pr, pg, pb);
+ glVertex2i(x+w, y+h);
+
+ glVertex2i(x+w, y+h);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(ar, ag, ab);
+ glVertex2i(x+w, y+h/2);
+
+ glVertex2i(x+w, y+h/2);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(pr, pg, pb);
+ glVertex2i(x+w, y);
+
+ glVertex2i(x+w, y);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(ar, ag, ab);
+ glVertex2i(x+w/2, y);
+
+ glVertex2i(x+w/2, y);
+ glColor3f(sr, sg, sb);
+ glVertex2i(x+w/2, y+h/2);
+ glColor3f(pr, pg, pb);
+ glVertex2i(x, y);
+ glEnd();