Changes

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<strong>intersection flags:</strong><br> <br> const unsigned PIF_SIBLING_COUNT_MASK = 0x000000F0;<br> const unsigned PIF_SIBLING_COUNT_SHIFT = 4;<br> const unsigned PIF_TYPE_START = 0x00010000;<br> const unsigned PIF_TYPE_END = 0x00020000;

<li><strong>intersection structures must be generated for EVERY curve involved in an intersection</strong></li>

<li><strong>structures have to be stored in such way that the first structure contains the number of siblings (curves involved)</strong>