diff options
Diffstat (limited to 'game/geoData.cpp')
| -rw-r--r-- | game/geoData.cpp | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/game/geoData.cpp b/game/geoData.cpp index f070391..fef7c34 100644 --- a/game/geoData.cpp +++ b/game/geoData.cpp @@ -478,22 +478,22 @@ GeoData::setHeights(const std::span<const GlobalPosition3D> triangleStrip, const const auto initialVertexCount = static_cast<unsigned int>(n_vertices()); + const auto vertexDistFrom = [this](GlobalPosition2D p) { + return [p, this](const VertexHandle v) { + return std::make_pair(v, glm::length(difference(this->point(v).xy(), p))); + }; + }; + // New vertices for each vertex in triangleStrip std::vector<VertexHandle> newVerts; newVerts.reserve(newVerts.size()); std::transform(triangleStrip.begin(), triangleStrip.end(), std::back_inserter(newVerts), - [this, &newVerts](const auto tsPoint) { + [this, &newVerts, &vertexDistFrom](const auto tsPoint) { const auto face = findPoint(tsPoint); if (const auto nearest = std::ranges::min(std::views::iota(fv_begin(face), fv_end(face)) - | std::views::filter([&newVerts](const auto v) { - return !std::ranges::contains(newVerts, *v); - }) - | std::views::transform([this, &tsPoint](const auto v) { - return std::make_pair( - *v, glm::length(difference(this->point(*v).xy(), tsPoint.xy()))); - }), + | std::views::transform(vertexDistFrom(tsPoint)), {}, &std::pair<VertexHandle, float>::second); - nearest.second < 500.F) { + nearest.second < 500.F && !std::ranges::contains(newVerts, nearest.first)) { point(nearest.first) = tsPoint; return nearest.first; } @@ -520,7 +520,7 @@ GeoData::setHeights(const std::span<const GlobalPosition3D> triangleStrip, const // Cut along each edge of triangleStrip AB, AC, BC, BD, CD, CE etc std::map<VertexHandle, const Triangle<3> *> boundaryTriangles; - auto doBoundaryPart = [this, &boundaryTriangles]( + auto doBoundaryPart = [this, &boundaryTriangles, &newVerts, &vertexDistFrom]( VertexHandle start, VertexHandle end, const Triangle<3> & triangle) { boundaryTriangles.emplace(start, &triangle); const auto endPoint = point(end); @@ -528,15 +528,19 @@ GeoData::setHeights(const std::span<const GlobalPosition3D> triangleStrip, const && std::ranges::any_of(voh_range(start), [&](const auto & outHalf) { const auto next = next_halfedge_handle(outHalf); const auto startPoint = point(start); - const auto nextStartPoint = point(from_vertex_handle(next)); - const auto nextEndPoint = point(to_vertex_handle(next)); - if (linesCross(startPoint, endPoint, nextStartPoint, nextEndPoint)) { - if (const auto intersection = linesIntersectAt( - startPoint.xy(), endPoint.xy(), nextStartPoint.xy(), nextEndPoint.xy())) { - const auto distS = glm::length(difference(*intersection, nextStartPoint.xy())); - const auto distE = glm::length(difference(*intersection, nextEndPoint.xy())); - if (const auto mdist = std::min({distS, distE}); mdist < 500.F) { - start = (mdist == distS) ? from_vertex_handle(next) : to_vertex_handle(next); + const auto nexts = std::array {from_vertex_handle(next), to_vertex_handle(next)}; + const auto nextPoints = nexts | std::views::transform([this](const auto v) { + return std::make_pair(v, this->point(v)); + }); + if (linesCross(startPoint, endPoint, nextPoints.front().second, nextPoints.back().second)) { + if (const auto intersection = linesIntersectAt(startPoint.xy(), endPoint.xy(), + nextPoints.front().second.xy(), nextPoints.back().second.xy())) { + if (const auto nextDist + = std::ranges::min(nexts | std::views::transform(vertexDistFrom(*intersection)), + {}, &std::pair<VertexHandle, float>::second); + nextDist.second < 500.F && !boundaryTriangles.contains(nextDist.first) + && !std::ranges::contains(newVerts, nextDist.first)) { + start = nextDist.first; point(start) = positionOnTriangle(*intersection, triangle); } else { |