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Differential D16893 Diff 58979 source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc

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source/blender/nodes/geometry/nodes/node_geo_scale_elements.cc

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/* Move scaling center back to where it was. */ /* Move scaling center back to where it was. */
add_v3_v3(transform.values[3], center); add_v3_v3(transform.values[3], center);
return transform; return transform;
} }
using GetVertexIndicesFn = FunctionRef<void(Span<MEdge> edges, using GetVertexIndicesFn = FunctionRef<void(Span<MEdge> edges,
Span<MPoly> polys, Span<MPoly> polys,
Span<MLoop> loops, Span<int> corner_verts,
int element_index, int element_index,
VectorSet<int> &r_vertex_indices)>; VectorSet<int> &r_vertex_indices)>;
static void scale_vertex_islands_uniformly(Mesh &mesh, static void scale_vertex_islands_uniformly(Mesh &mesh,
const Span<ElementIsland> islands, const Span<ElementIsland> islands,
const UniformScaleParams &params, const UniformScaleParams &params,
const GetVertexIndicesFn get_vertex_indices) const GetVertexIndicesFn get_vertex_indices)
{ {
MutableSpan<float3> positions = mesh.vert_positions_for_write(); MutableSpan<float3> positions = mesh.vert_positions_for_write();
const Span<MEdge> edges = mesh.edges(); const Span<MEdge> edges = mesh.edges();
const Span<MPoly> polys = mesh.polys(); const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops(); const Span<int> corner_verts = mesh.corner_verts();
threading::parallel_for(islands.index_range(), 256, [&](const IndexRange range) { threading::parallel_for(islands.index_range(), 256, [&](const IndexRange range) {
for (const int island_index : range) { for (const int island_index : range) {
const ElementIsland &island = islands[island_index]; const ElementIsland &island = islands[island_index];
float scale = 0.0f; float scale = 0.0f;
float3 center = {0.0f, 0.0f, 0.0f}; float3 center = {0.0f, 0.0f, 0.0f};
VectorSet<int> vertex_indices; VectorSet<int> vertex_indices;
for (const int poly_index : island.element_indices) { for (const int poly_index : island.element_indices) {
get_vertex_indices(edges, polys, loops, poly_index, vertex_indices); get_vertex_indices(edges, polys, corner_verts, poly_index, vertex_indices);
center += params.centers[poly_index]; center += params.centers[poly_index];
scale += params.scales[poly_index]; scale += params.scales[poly_index];
} }
/* Divide by number of elements to get the average. */ /* Divide by number of elements to get the average. */
const float f = 1.0f / island.element_indices.size(); const float f = 1.0f / island.element_indices.size();
scale *= f; scale *= f;
center *= f; center *= f;
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static void scale_vertex_islands_on_axis(Mesh &mesh, static void scale_vertex_islands_on_axis(Mesh &mesh,
const Span<ElementIsland> islands, const Span<ElementIsland> islands,
const AxisScaleParams &params, const AxisScaleParams &params,
const GetVertexIndicesFn get_vertex_indices) const GetVertexIndicesFn get_vertex_indices)
{ {
MutableSpan<float3> positions = mesh.vert_positions_for_write(); MutableSpan<float3> positions = mesh.vert_positions_for_write();
const Span<MEdge> edges = mesh.edges(); const Span<MEdge> edges = mesh.edges();
const Span<MPoly> polys = mesh.polys(); const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops(); const Span<int> corner_verts = mesh.corner_verts();
threading::parallel_for(islands.index_range(), 256, [&](const IndexRange range) { threading::parallel_for(islands.index_range(), 256, [&](const IndexRange range) {
for (const int island_index : range) { for (const int island_index : range) {
const ElementIsland &island = islands[island_index]; const ElementIsland &island = islands[island_index];
float scale = 0.0f; float scale = 0.0f;
float3 center = {0.0f, 0.0f, 0.0f}; float3 center = {0.0f, 0.0f, 0.0f};
float3 axis = {0.0f, 0.0f, 0.0f}; float3 axis = {0.0f, 0.0f, 0.0f};
VectorSet<int> vertex_indices; VectorSet<int> vertex_indices;
for (const int poly_index : island.element_indices) { for (const int poly_index : island.element_indices) {
get_vertex_indices(edges, polys, loops, poly_index, vertex_indices); get_vertex_indices(edges, polys, corner_verts, poly_index, vertex_indices);
center += params.centers[poly_index]; center += params.centers[poly_index];
scale += params.scales[poly_index]; scale += params.scales[poly_index];
axis += params.axis_vectors[poly_index]; axis += params.axis_vectors[poly_index];
} }
/* Divide by number of elements to get the average. */ /* Divide by number of elements to get the average. */
const float f = 1.0f / island.element_indices.size(); const float f = 1.0f / island.element_indices.size();
scale *= f; scale *= f;
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}); });
BKE_mesh_tag_coords_changed(&mesh); BKE_mesh_tag_coords_changed(&mesh);
} }
static Vector<ElementIsland> prepare_face_islands(const Mesh &mesh, const IndexMask face_selection) static Vector<ElementIsland> prepare_face_islands(const Mesh &mesh, const IndexMask face_selection)
{ {
const Span<MPoly> polys = mesh.polys(); const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops(); const Span<int> corner_verts = mesh.corner_verts();
/* Use the disjoint set data structure to determine which vertices have to be scaled together. */ /* Use the disjoint set data structure to determine which vertices have to be scaled together. */
DisjointSet<int> disjoint_set(mesh.totvert); DisjointSet<int> disjoint_set(mesh.totvert);
for (const int poly_index : face_selection) { for (const int poly_index : face_selection) {
const MPoly &poly = polys[poly_index]; const MPoly &poly = polys[poly_index];
const Span<MLoop> poly_loops = loops.slice(poly.loopstart, poly.totloop); const Span<int> poly_corner_verts = corner_verts.slice(poly.loopstart, poly.totloop);
for (const int loop_index : IndexRange(poly.totloop - 1)) { for (const int loop_index : IndexRange(poly.totloop - 1)) {
const int v1 = poly_loops[loop_index].v; const int v1 = poly_corner_verts[loop_index];
const int v2 = poly_loops[loop_index + 1].v; const int v2 = poly_corner_verts[loop_index + 1];
disjoint_set.join(v1, v2); disjoint_set.join(v1, v2);
} }
disjoint_set.join(poly_loops.first().v, poly_loops.last().v); disjoint_set.join(poly_corner_verts.first(), poly_corner_verts.last());
} }
VectorSet<int> island_ids; VectorSet<int> island_ids;
Vector<ElementIsland> islands; Vector<ElementIsland> islands;
/* There are at most as many islands as there are selected faces. */ /* There are at most as many islands as there are selected faces. */
islands.reserve(face_selection.size()); islands.reserve(face_selection.size());
/* Gather all of the face indices in each island into separate vectors. */ /* Gather all of the face indices in each island into separate vectors. */
for (const int poly_index : face_selection) { for (const int poly_index : face_selection) {
const MPoly &poly = polys[poly_index]; const MPoly &poly = polys[poly_index];
const Span<MLoop> poly_loops = loops.slice(poly.loopstart, poly.totloop); const Span<int> poly_corner_verts = corner_verts.slice(poly.loopstart, poly.totloop);
const int island_id = disjoint_set.find_root(poly_loops[0].v); const int island_id = disjoint_set.find_root(poly_corner_verts[0]);
const int island_index = island_ids.index_of_or_add(island_id); const int island_index = island_ids.index_of_or_add(island_id);
if (island_index == islands.size()) { if (island_index == islands.size()) {
islands.append_as(); islands.append_as();
} }
ElementIsland &island = islands[island_index]; ElementIsland &island = islands[island_index];
island.element_indices.append(poly_index); island.element_indices.append(poly_index);
} }
return islands; return islands;
} }
static void get_face_verts(const Span<MEdge> /*edges*/, static void get_face_verts(const Span<MEdge> /*edges*/,
const Span<MPoly> polys, const Span<MPoly> polys,
const Span<MLoop> loops, const Span<int> corner_verts,
int face_index, int face_index,
VectorSet<int> &r_vertex_indices) VectorSet<int> &r_vertex_indices)
{ {
const MPoly &poly = polys[face_index]; const MPoly &poly = polys[face_index];
const Span<MLoop> poly_loops = loops.slice(poly.loopstart, poly.totloop); r_vertex_indices.add_multiple(corner_verts.slice(poly.loopstart, poly.totloop));
for (const MLoop &loop : poly_loops) {
r_vertex_indices.add(loop.v);
}
} }
static AxisScaleParams evaluate_axis_scale_fields(FieldEvaluator &evaluator, static AxisScaleParams evaluate_axis_scale_fields(FieldEvaluator &evaluator,
const AxisScaleFields &fields) const AxisScaleFields &fields)
{ {
AxisScaleParams out; AxisScaleParams out;
evaluator.set_selection(fields.selection); evaluator.set_selection(fields.selection);
evaluator.add(fields.scale, &out.scales); evaluator.add(fields.scale, &out.scales);
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island.element_indices.append(edge_index); island.element_indices.append(edge_index);
} }
return islands; return islands;
} }
static void get_edge_verts(const Span<MEdge> edges, static void get_edge_verts(const Span<MEdge> edges,
const Span<MPoly> /*polys*/, const Span<MPoly> /*polys*/,
const Span<MLoop> /*loops*/, const Span<int> /*corner_verts*/,
int edge_index, int edge_index,
VectorSet<int> &r_vertex_indices) VectorSet<int> &r_vertex_indices)
{ {
const MEdge &edge = edges[edge_index]; const MEdge &edge = edges[edge_index];
r_vertex_indices.add(edge.v1); r_vertex_indices.add(edge.v1);
r_vertex_indices.add(edge.v2); r_vertex_indices.add(edge.v2);
} }
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