for (i=0; i<numParts2; i++)
glDrawElements(GL_LINE_LOOP, numVertPerPart2,
GL_UNSIGNED_SHORT, (GLvoid*)(sizeof(vertIdxs2[0])*i*numVertPerPart2));
for (i=0; i<numParts2; i++)
glDrawElements(GL_LINE_LOOP, numVertPerPart2,
GL_UNSIGNED_SHORT, (GLvoid*)(sizeof(vertIdxs2[0])*i*numVertPerPart2));