Bug 317180 Screen cheese when starting fresh workspace
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/CTabRendering.java
}
			x++;
			e += u;
			u += 2;
			if (v < 2 * e) {
				y--;
				e -= v;
				v -= 2;
			}
			if (x > y)
				break;
			if (circlePart == RIGHT_BOTTOM) {
				pointsMirror[loopMirror++] = xC + y;
				pointsMirror[loopMirror++] = yC + x;
			}
			if (circlePart == RIGHT_TOP) {
				pointsMirror[loopMirror++] = xC + x;
				pointsMirror[loopMirror++] = yC - y;
			}
			if (circlePart == LEFT_TOP) {
				pointsMirror[loopMirror++] = xC - y;
				pointsMirror[loopMirror++] = yC - x;
			}
			if (circlePart == LEFT_BOTTOM) {
				pointsMirror[loopMirror++] = xC - x;
				pointsMirror[loopMirror++] = yC + y;
			}
			
			if ((loop + 1) > points.length) {
				int length = points.length * 2;