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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_task.hh"
#include "BKE_material.h"
#include "BKE_mesh.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "NOD_socket_search_link.hh"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_mesh_primitive_line_cc {
NODE_STORAGE_FUNCS(NodeGeometryMeshLine)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Int>(N_("Count"))
.default_value(10)
.min(1)
.max(10000)
.description(N_("Number of vertices on the line"));
b.add_input<decl::Float>(N_("Resolution"))
.default_value(1.0f)
.min(0.1f)
.subtype(PROP_DISTANCE)
.description(N_("Length of each individual edge"));
b.add_input<decl::Vector>(N_("Start Location"))
.subtype(PROP_TRANSLATION)
.description(N_("Position of the first vertex"));
b.add_input<decl::Vector>(N_("Offset"))
.default_value({0.0f, 0.0f, 1.0f})
.subtype(PROP_TRANSLATION)
.description(N_(
"In offset mode, the distance between each socket on each axis. In end points mode, the "
"position of the final vertex"));
b.add_output<decl::Geometry>(N_("Mesh"));
}
static void node_layout(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)
{
uiLayoutSetPropSep(layout, true);
uiLayoutSetPropDecorate(layout, false);
uiItemR(layout, ptr, "mode", 0, "", ICON_NONE);
if (RNA_enum_get(ptr, "mode") == GEO_NODE_MESH_LINE_MODE_END_POINTS) {
uiItemR(layout, ptr, "count_mode", 0, "", ICON_NONE);
}
}
static void node_init(bNodeTree * /*tree*/, bNode *node)
{
NodeGeometryMeshLine *node_storage = MEM_cnew<NodeGeometryMeshLine>(__func__);
node_storage->mode = GEO_NODE_MESH_LINE_MODE_OFFSET;
node_storage->count_mode = GEO_NODE_MESH_LINE_COUNT_TOTAL;
node->storage = node_storage;
}
static void node_update(bNodeTree *ntree, bNode *node)
{
bNodeSocket *count_socket = static_cast<bNodeSocket *>(node->inputs.first);
bNodeSocket *resolution_socket = count_socket->next;
bNodeSocket *start_socket = resolution_socket->next;
bNodeSocket *end_and_offset_socket = start_socket->next;
const NodeGeometryMeshLine &storage = node_storage(*node);
const GeometryNodeMeshLineMode mode = (GeometryNodeMeshLineMode)storage.mode;
const GeometryNodeMeshLineCountMode count_mode = (GeometryNodeMeshLineCountMode)
storage.count_mode;
node_sock_label(end_and_offset_socket,
(mode == GEO_NODE_MESH_LINE_MODE_END_POINTS) ? N_("End Location") :
N_("Offset"));
nodeSetSocketAvailability(ntree,
resolution_socket,
mode == GEO_NODE_MESH_LINE_MODE_END_POINTS &&
count_mode == GEO_NODE_MESH_LINE_COUNT_RESOLUTION);
nodeSetSocketAvailability(ntree,
count_socket,
mode == GEO_NODE_MESH_LINE_MODE_OFFSET ||
count_mode == GEO_NODE_MESH_LINE_COUNT_TOTAL);
}
static void node_gather_link_searches(GatherLinkSearchOpParams ¶ms)
{
const NodeDeclaration &declaration = *params.node_type().fixed_declaration;
if (params.in_out() == SOCK_OUT) {
search_link_ops_for_declarations(params, declaration.outputs());
return;
}
else if (params.node_tree().typeinfo->validate_link(
eNodeSocketDatatype(params.other_socket().type), SOCK_FLOAT)) {
params.add_item(IFACE_("Count"), [](LinkSearchOpParams ¶ms) {
bNode &node = params.add_node("GeometryNodeMeshLine");
node_storage(node).mode = GEO_NODE_MESH_LINE_MODE_OFFSET;
params.connect_available_socket(node, "Count");
});
params.add_item(IFACE_("Resolution"), [](LinkSearchOpParams ¶ms) {
bNode &node = params.add_node("GeometryNodeMeshLine");
node_storage(node).mode = GEO_NODE_MESH_LINE_MODE_OFFSET;
node_storage(node).count_mode = GEO_NODE_MESH_LINE_COUNT_RESOLUTION;
params.connect_available_socket(node, "Resolution");
});
params.add_item(IFACE_("Start Location"), [](LinkSearchOpParams ¶ms) {
bNode &node = params.add_node("GeometryNodeMeshLine");
params.connect_available_socket(node, "Start Location");
});
params.add_item(IFACE_("Offset"), [](LinkSearchOpParams ¶ms) {
bNode &node = params.add_node("GeometryNodeMeshLine");
params.connect_available_socket(node, "Offset");
});
/* The last socket is reused in end points mode. */
params.add_item(IFACE_("End Location"), [](LinkSearchOpParams ¶ms) {
bNode &node = params.add_node("GeometryNodeMeshLine");
node_storage(node).mode = GEO_NODE_MESH_LINE_MODE_END_POINTS;
params.connect_available_socket(node, "Offset");
});
}
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryMeshLine &storage = node_storage(params.node());
const GeometryNodeMeshLineMode mode = (GeometryNodeMeshLineMode)storage.mode;
const GeometryNodeMeshLineCountMode count_mode = (GeometryNodeMeshLineCountMode)
storage.count_mode;
Mesh *mesh = nullptr;
const float3 start = params.extract_input<float3>("Start Location");
if (mode == GEO_NODE_MESH_LINE_MODE_END_POINTS) {
/* The label switches to "End Location", but the same socket is used. */
const float3 end = params.extract_input<float3>("Offset");
const float3 total_delta = end - start;
if (count_mode == GEO_NODE_MESH_LINE_COUNT_RESOLUTION) {
/* Don't allow asymptotic count increase for low resolution values. */
const float resolution = std::max(params.extract_input<float>("Resolution"), 0.0001f);
const int count = math::length(total_delta) / resolution + 1;
const float3 delta = math::normalize(total_delta) * resolution;
mesh = create_line_mesh(start, delta, count);
}
else if (count_mode == GEO_NODE_MESH_LINE_COUNT_TOTAL) {
const int count = params.extract_input<int>("Count");
if (count == 1) {
mesh = create_line_mesh(start, float3(0), count);
}
else {
const float3 delta = total_delta / float(count - 1);
mesh = create_line_mesh(start, delta, count);
}
}
}
else if (mode == GEO_NODE_MESH_LINE_MODE_OFFSET) {
const float3 delta = params.extract_input<float3>("Offset");
const int count = params.extract_input<int>("Count");
mesh = create_line_mesh(start, delta, count);
}
params.set_output("Mesh", GeometrySet::create_with_mesh(mesh));
}
} // namespace blender::nodes::node_geo_mesh_primitive_line_cc
namespace blender::nodes {
Mesh *create_line_mesh(const float3 start, const float3 delta, const int count)
{
if (count < 1) {
return nullptr;
}
Mesh *mesh = BKE_mesh_new_nomain(count, count - 1, 0, 0, 0);
BKE_id_material_eval_ensure_default_slot(&mesh->id);
MutableSpan<float3> positions = mesh->positions_for_write();
MutableSpan<MEdge> edges = mesh->edges_for_write();
threading::parallel_invoke(
1024 < count,
[&]() {
threading::parallel_for(positions.index_range(), 4096, [&](IndexRange range) {
for (const int i : range) {
positions[i] = start + delta * i;
}
});
},
[&]() {
threading::parallel_for(edges.index_range(), 4096, [&](IndexRange range) {
for (const int i : range) {
edges[i].v1 = i;
edges[i].v2 = i + 1;
edges[i].flag |= ME_LOOSEEDGE;
}
});
});
return mesh;
}
} // namespace blender::nodes
void register_node_type_geo_mesh_primitive_line()
{
namespace file_ns = blender::nodes::node_geo_mesh_primitive_line_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_MESH_PRIMITIVE_LINE, "Mesh Line", NODE_CLASS_GEOMETRY);
ntype.declare = file_ns::node_declare;
node_type_init(&ntype, file_ns::node_init);
node_type_update(&ntype, file_ns::node_update);
node_type_storage(
&ntype, "NodeGeometryMeshLine", node_free_standard_storage, node_copy_standard_storage);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.draw_buttons = file_ns::node_layout;
ntype.gather_link_search_ops = file_ns::node_gather_link_searches;
nodeRegisterType(&ntype);
}
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