jbuckmccready
commented
3 years ago They are currently only used internally so there isn't any structure to them externally (probably shouldn't even be part of the API). In the future it would be nice to return the list of all parent indexes (it may be more than 1) associated with each resulting loop.
doomori
Hi,jbuckmccready.I am doomori. Thank you for good libraly.
Please tell me the rule(structure) of parentIndex in parallelOffsetIsland. I rewrite that outer Rectangle have 4 simple islands in interactiveUI/plineoffsetislandsalgorithmview.cpp .
mainOuterPline.addVertex(-120,-80,0); mainOuterPline.addVertex(120,-80,0); mainOuterPline.addVertex(120,80,0); mainOuterPline.addVertex(-120,80,0);
and
int count = 4; for (int i = 0; i < count; ++i) { cavc::Polyline island;
island.addVertex(-100+14i, 10, 0);
island.addVertex(-94+14i, 10, 0);
island.addVertex(-94+14i, 15, 0);
island.addVertex(-100+14i, 15, 0);
island.isClosed() = true;
invertDirection(island);
m_cwLoops.push_back(std::move(island));
}
and (in PlineOffsetIslandsAlgorithmView::updatePaintNode) for (auto const &loop : loopSet.cwLoops) { printf("cw_parent_Index%zu\n",loop.parentLoopIndex); <-add addPline(loop.polyline); } for (auto const &loop : loopSet.ccwLoops) { printf("ccw_parent_Index%zu\n",loop.parentLoopIndex);<-add addPline(loop.polyline); }
offset = 2.5 The result is
cw_parent_Index1 cw_parent_Index2 cw_parent_Index3 cw_parent_Index4 ccw_parent_Index0
cw_parent_Index0 ccw_parent_Index0
cw_parent_Index1 ccw_parent_Index0
cw_parent_Index0 ccw_parent_Index0
ccw_parent_Index0
ccw_parent_Index0
In my sence,
cw_parent_Index1 -> 0 cw_parent_Index2 -> 1 cw_parent_Index3 -> 2 cw_parent_Index4 -> 3 ccw_parent_Index0
cw_parent_Index0 any of 0-3 ccw_parent_Index0
cw_parent_Index1 -> 0 ccw_parent_Index0
cw_parent_Index0 ccw_parent_Index0
ccw_parent_Index0
ccw_parent_Index0
Please tell me the rule (structure) of parentIndex about cwLoops. Thank you .